JPH08192344A - Finishing device for inner surface of cylinder and finishing method for inner surface of cylinder - Google Patents

Abstract

PURPOSE: To continuously and efficiently conduct by finishing work using a same rotating means for a process of rough finishing for the inner surface of a cylinder hole, and also for a process of final finishing. CONSTITUTION: After a first finishing means for rough finishing, which was mounted to a rotating means as a first working process, has been removed, a second finishing means 16 is mounted thereto as a second working process, it is inserted into a cylinder hole 6 so as to be axially rotated. In this case, the second finishing means 16 is reciprocated several times along the axial direction at a specified revolution speed and a specified feed speed with cutting lubricant supplied to a working surface while the spherical abrasive grains 4 of the second finishing means 16 are being pressed onto the inner surface of the cylinder hole 6 by the resilient force of a coil shaped elastic member 3. After a finishing process as mentioned above has been applied, the second finishing means 16 is pulled out of the cylinder hole 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical inner surface finishing device and a cylindrical inner surface finishing method for finishing the inner surface of a cylindrical hole rough-processed by a cutting tool or the like.

[0002]

2. Description of the Related Art FIG. 36 is a front view showing a conventional cylindrical inner surface finishing device disclosed in, for example, Japanese Patent Publication No. 3-60968.
FIG. 37 is a side view showing a state in which the conventional cylindrical inner surface finishing device is used. In FIG. 37, reference numeral 1 is a linear elastic member 3 made of nylon resin and radially protruding from the outer periphery of a rotatable shaft portion 2.
Is a cylindrical inner surface finishing device formed by fixing spherical abrasive grains 4 to the tip of the. The outer diameter of the cylindrical inner surface finishing device provided with the spherical abrasive grains 4 is determined by the cylindrical hole 6 of the workpiece 5 to be finished.
Is formed to be larger than the inner diameter of the.

Next, the operation will be described. While fixing the end of the shaft portion 2 to an air drill (not shown) and rotating the cylindrical inner surface finishing device 1 about its axis, the cylindrical inner surface finishing is performed in the cylindrical hole 6 of the workpiece 5 rough-processed by a cutting tool such as a cutting tool. Insert the device 1. Since the outer diameter of the cylindrical inner surface finishing device 1 is formed to be larger than the inner diameter of the cylindrical hole 6, the elastic force of the linear elastic member 3 causes a resistance force when the spherical abrasive grains 4 come into contact with the inner surface of the cylindrical hole 6. While being elastically deformed in the counter-rotational direction, it comes into contact with the inner surface of the cylindrical hole 6, and finishes burrs and plucks by grinding. This finishing is performed by simultaneously operating the axial rotation and the axial reciprocating movement of the cylindrical inner surface finishing device 1. Also,
At any time during the finishing process, the cylindrical inner surface finishing device 1 is pulled out from the cylindrical hole 6 and the finished size of the cylindrical hole 6 is measured. When the size is within a predetermined dimensional tolerance, the process is finished.

Next, an example of a conventional method for finishing the inner surface of a cylinder will be described. FIG. 34 (A) is a perspective view showing a conventional cylindrical inner surface finishing method, FIG. 34 (B) is a sectional view showing the structure of a grindstone used in the conventional cylindrical inner surface finishing method, and FIG. 35 (A) is a conventional cylindrical surface finishing method. FIG. 35B is a cross-sectional view showing a roughness curve after roughing by the inner surface finishing method, and FIG. 35B is a cross-sectional view showing a roughness curve after finishing by the conventional cylindrical inner surface finishing method. In the figure, 101 is a honing device in which a plurality of rod-shaped flexible grindstone layers 103 are provided around a rotation spindle (not shown), 102
Is a base made of cork material having a grindstone layer 103 on its upper surface so as to have flexibility. The grindstone layer 103 is formed, for example, by mixing abrasive particles in a cork material and solidifying it. The grindstone layer 103 is formed into a curved surface having an arcuate cross section according to the inner diameter of the finish and is fixed to the base 102 with an adhesive or the like. Has been done.

Next, the operation will be described. The honing device 101 is press-inserted into the cylindrical hole 6 of the workpiece 5 rough-processed by a cutting tool such as a cutting tool (not shown), and the grindstone layer 103 is processed by simultaneously operating its rotation and axial reciprocating motion. It is pressed against the inner surface of 5 to grind burrs, plucks, etc. generated during rough machining.

[0006]

Since the conventional cylindrical inner surface finishing device and cylindrical inner surface finishing method are configured as described above, the base 102 and the grindstone layer 1 of the honing device 101 are provided.
Since 03 is formed to have flexibility, the grindstone layer 103 is formed in the cylindrical hole 6 of the workpiece 5 that has been rough-processed.
Is pressed, the protrusions such as burrs and peeling force the abrasive grains on the surface layer of the grindstone layer 103 into the flexible grindstone layer 103, and the grinding function of the grindstone layer 103 is disturbed. The accurate cylindricity and roundness of the object 5 were not obtained. Further, in the conventional cylindrical inner surface finishing device, since the elastic force of the linear elastic member 3 makes contact with the cylindrical hole 6 of the workpiece 5, accurate cylindricity and circularity of the workpiece 5 are obtained. However, there is a problem in that both ends of the cylindrical hole 6 in the axial direction expand in a tapered shape when the honing device 101 reciprocates. Further, when the final finished surface of the cylindrical hole 6 is mirror-finished, which requires extremely high precision, it is inevitable to replace it with a finer grinding stone having abrasive grains, and there is a problem that the finishing process and working time increase.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for finishing the inner surface of a cylinder capable of quickly and easily and accurately finishing the cylindrical hole of a workpiece. .

It is another object of the present invention to provide a cylindrical inner surface finishing device which can finish a cylindrical hole of a work piece quickly, easily and accurately.

It is another object of the present invention to provide a cylindrical inner surface finishing device which is capable of quickly and easily and accurately finishing a cylindrical hole of a workpiece by manual work.

It is another object of the present invention to provide a cylindrical inner surface finishing device capable of quickly and easily and accurately finishing a plurality of cylindrical holes.

Further, according to the present invention, the finishing of the cylindrical holes of a plurality of workpieces can be performed quickly and easily with high precision,
It is an object of the present invention to obtain a cylindrical inner surface finishing device that can perform an inspection process at the same time as a processing process.

[0012]

According to a first aspect of the present invention, there is provided a method for finishing an inner surface of a cylinder, wherein a first finishing device having a horn finishing grindstone pressably pressed against an inner surface of the cylindrical hole is rotated and an axis of the cylindrical hole is rotated. The first finishing procedure for rough-finishing the inner surface of the cylindrical hole by moving it in the direction, and the second finishing device provided with the linear elastic member and the spherical abrasive grains is rotated after the first finishing procedure. And a second machining procedure for finally finishing the inner surface of the cylindrical hole by moving it in the axial direction of the cylindrical hole.

According to a second aspect of the present invention, there is provided a cylindrical inner surface finishing device comprising: a first finishing device which is a cylindrical grindstone disposed on a shaft portion;
A second finishing device having a linear elastic member and spherical abrasive grains and having a diameter larger than that of the first finishing device is provided.

According to a third aspect of the present invention, there is provided a cylindrical inner surface finishing device having a guide ring arranged on a shaft portion, a linear elastic member and spherical abrasive grains, and having a diameter larger than that of the guide ring. And a device.

According to a fourth aspect of the present invention, there is provided a cylindrical inner surface finishing device having a first finishing device having a first linear elastic member and spherical abrasive grains, and rigidity higher than that of the first linear elastic member. A second finishing device having a second linear elastic member and spherical abrasive grains and having a diameter smaller than that of the first finishing device is provided.

According to a fifth aspect of the present invention, there is provided a cylindrical inner surface finishing device which is rotatably supported by a first shaft part and a first gear part, and a second shaft part so as to mesh with the first gear part. A second gear, a third gear rotatably supported by a third shaft portion so as to mesh with the second gear, a linear elastic member fixed to the third shaft portion, and a tip end portion thereof. And a finishing device having spherical abrasive grains.

According to a sixth aspect of the present invention, there is provided a cylindrical inner surface finishing device, which comprises a guide ring axially supported at an end of a shaft portion on the side of a workpiece, and an inspection taper ring arranged at a distance from the guide ring. The guide ring and the inspection taper ring are provided with a linear elastic member protruding from the shaft portion between the guide ring and the inspection taper ring, and spherical abrasive grains fixed to the tip end of the linear elastic member. And a finishing device having a large diameter.

According to a seventh aspect of the present invention, there is provided a cylindrical inner surface finishing device, wherein a cylindrical finishing whetstone is rotatably supported at an end of the shaft portion on the side of the workpiece, and the cylindrical finishing whetstone is provided with a space provided therebetween. Cylindrical finish having an inspection taper ring, a linear elastic member protruding from the shaft portion between the cylindrical finishing grindstone and the inspection taper ring, and spherical abrasive grains fixed to the tip end portion thereof It is configured to include a grinding stone and a finishing device having a diameter larger than that of the inspection taper ring.

According to an eighth aspect of the present invention, there is provided a cylindrical inner surface finishing device which comprises a first guide ring, a second guide ring, a third guide ring, and a first guide ring which are axially supported by a shaft portion. And a second guide ring, the first finishing device having a linear elastic member projecting from the shaft portion and a spherical rough abrasive grain fixed to the tip portion thereof, and the second guide ring. And a third guide ring, and a second finishing device having a linear elastic member projectingly provided on the shaft portion and a spherical finishing abrasive grain fixed to the tip portion thereof. It is a thing.

According to a ninth aspect of the present invention, there is provided a cylindrical inner surface finishing device which comprises a spherical elastic member having a linear elastic member projecting from a shaft portion and rough abrasive grains and finishing abrasive grains fixed to the tip of the elastic member. And a grain.

A cylindrical inner surface finishing device according to a tenth aspect of the present invention comprises a linear elastic member projecting from a shaft portion and a plurality of rod-shaped grindstones fixed to the tip of the linear elastic member.

A cylindrical inner surface finishing device according to an eleventh aspect of the present invention is a rod-shaped grindstone formed by a linear elastic member projecting from a shaft portion and having rough abrasive grains and finishing abrasive grains fixed to the tip thereof. And is configured to include.

A cylindrical inner surface finishing device according to a twelfth aspect of the present invention has a horn finishing grindstone and a pressing adjusting device for supporting the horn finishing grindstone on the inner surface of the cylindrical hole so that the horn finishing grindstone is rotatable. In the formed cylindrical inner surface finishing device, rough abrasive grains are provided on the workpiece side of the horn finishing grindstone, and finish abrasive grains are provided on the non-workpiece side.

A cylindrical inner surface finishing device according to a thirteenth aspect of the present invention has a horn finishing grindstone and a pressure adjusting device for supporting the horn finishing grindstone on the inner surface of the cylindrical hole so that the horn finishing grindstone can be rotated. A first finishing device formed in
A second finish including a linear elastic member protruding from the shaft and a spherical abrasive grain fixed to the tip of the shaft extending coaxially with the shaft of the workpiece. Equipped with a device,
The diameter of the second finishing device is larger than that of the first finishing device.

A cylindrical inner surface finishing device according to a fourteenth aspect of the present invention is a cylindrical bag-shaped elastic member formed so as to expand and contract by wrapping a shaft portion and fixing abrasive grains to the outer peripheral surface of the cylindrical bag-shaped elastic member. On the other hand, a pressure supply / discharge device for supplying or discharging a pressure fluid, and guide rings provided on both axial sides of the cylindrical bag-shaped elastic member are provided.

According to a fifteenth aspect of the present invention, there is provided a cylindrical inner surface finishing device, wherein a first guide ring, a second guide ring, a third guide ring, and the first guide ring which are axially supported by a shaft portion. A first finishing device having a rigid first linear elastic member projecting from the shaft portion between the second guide ring and the second guide ring, and spherical rough abrasive grains fixed to the tip end portion thereof. The second
A second linear elastic member having flexibility and projectingly provided on the shaft portion between the guide ring and the third guide ring, and a spherical finishing abrasive grain fixed to the tip portion thereof, The second finishing device is formed so as to have a larger outer diameter than the first finishing device.

According to a sixteenth aspect of the present invention, there is provided a cylindrical inner surface finishing device which comprises a first gear wheel pivotally supported by a first shaft portion, a second gear wheel pivotally supported by a second shaft portion, and a third gear wheel. A third gear rotatably supported by the shaft portion, a linear elastic member projectingly provided on the third shaft portion, and spherical abrasive grains fixed to the tip of the linear elastic member. is there.

According to a seventeenth aspect of the present invention, there is provided a cylindrical inner surface finishing device which comprises: a first gear wheel pivotally supported by a first shaft portion; a second gear wheel pivotally supported by a second shaft portion; A rough finishing device having a linear elastic member projecting from one of the two shafts and a spherical abrasive grain fixed to the tip of the linear elastic member, and provided with a spherical abrasive grain so as to be adjacent to the rough finishing device. A rough finishing device provided on the second shaft portion, a spherical finishing grain, and a medium finishing device provided on the second shaft portion so as to be adjacent to the rough finishing device; The second device is adjacent to the finishing device.
And a final finishing device provided on the shaft portion of.

According to the eighteenth aspect of the present invention, there is provided a cylindrical inner surface finishing method, wherein a cylindrical inner surface finishing device is inserted into the cylindrical hole and brought into contact with the inner surface of the cylindrical hole, and the shaft portion is moved so that the linear elastic member bends. The inner surface finishing device is rotated and reciprocally moved in the axial direction to finish the inner surface of the cylindrical hole, and the cylindrical portion is further circularly moved with respect to the axis of the cylindrical hole. The entire inner surface is finished, and the shaft portion is moved so that the amount of bending of the linear elastic member is reduced stepwise or continuously.

[0030]

The cylindrical inner surface finishing method according to the first aspect of the invention is
The first machining procedure for rough-finishing the inner surface of the cylindrical hole and the second machining procedure for final finishing can be performed using the same rotating device, so that the finishing machining can be performed continuously and efficiently.

The cylindrical inner surface finishing device according to the second aspect of the present invention includes the first finishing device and the second finishing device, so that the center of the machining shaft is maintained by the first finishing device. The fine finishing surface is simultaneously formed by the second finishing device.

Since the cylindrical inner surface finishing device according to the third aspect of the present invention is provided with the guide ring and the finishing device, both ends of the machining diameter in the axial direction can be easily and manually finished without being tapered. Can be processed.

In the cylindrical inner surface finishing device according to the invention of claim 4, the second linear elastic member of the second finishing device is more elastic than the first linear elastic member of the first finishing device. Since the amount of deformation is small, it is possible to easily maintain the central position of the machining axis while maintaining the cylindricity for finishing.

In the cylindrical inner surface finishing device according to the fifth aspect of the present invention, since the finishing device axially rotates and finishes the inner surface of the cylindrical hole, the cylindrical holes of a plurality of workpieces can be simultaneously processed, and the work efficiency is improved. To do.

In the cylindrical inner surface finishing device according to the sixth aspect of the present invention, since the inspection taper ring is provided, the inspection process which has conventionally been performed separately is performed simultaneously with the finishing process.

In the cylindrical inner surface finishing device according to the invention of claim 7, the cylindrical finishing grindstone can be used for finishing while maintaining the cylindricity while maintaining the center position of the working shaft. Further, the finishing device can form a fine finished surface. Do at the same time.

In the cylindrical inner surface finishing device according to the invention of claim 8, the first finishing device and the second finishing device perform finishing work while maintaining the axial center by the first to third guide rings, and continuous work is performed. Allows for flexible final finishing.

In the cylindrical inner surface finishing device according to the ninth aspect of the present invention, the rough finishing process and the final finishing process on the inner surface of the cylindrical hole are continuously and efficiently performed only by reversing the rotating direction of the shaft portion.

In the cylindrical inner surface finishing device of the tenth aspect of the present invention, the rod-shaped grindstone is provided to obtain a finished surface having straightness along the axial direction.

According to the eleventh aspect of the present invention, the cylindrical inner surface finishing device performs the rough finishing process and the final finishing process on the inner surface of the cylindrical hole continuously and efficiently only by reversing the rotating direction of the shaft portion.

According to the twelfth aspect of the present invention, the inner cylindrical surface finishing device forms the rough abrasive grains and the finish abrasive particles to efficiently perform the rough finishing process and the final finishing process on the inner surface of the cylindrical hole continuously.

In the cylindrical inner surface finishing device of the thirteenth aspect of the present invention, by providing the first finishing device and the second finishing device, the rough finishing process and the final finishing process on the inner surface of the cylindrical hole are continuously and efficiently performed. To do.

In the cylindrical inner surface finishing device according to the fourteenth aspect of the present invention, the pressure supplying / discharging device can easily perform the diameter expansion and contraction operations of the cylindrical bag-shaped elastic member to efficiently perform the finishing work, and the cylindrical bag-shaped elastic member. Since the shaft center can be maintained by the guide ring when sliding the shaft in the axial direction, it is possible to prevent the one-sided machining and perform the finishing process with high accuracy.

In the cylindrical inner surface finishing device of the fifteenth aspect of the present invention, since the first finishing device and the second finishing device are provided, the cylindrical hole can be subjected to flexible final finishing by continuous work.

In the cylindrical inner surface finishing device according to the sixteenth aspect of the present invention, a plurality of cylindrical holes can be simultaneously machined by pivoting the finishing device provided on the third shaft portion, so that the working efficiency is improved.

In the cylindrical inner surface finishing device of the seventeenth aspect of the present invention, first, rough finishing is performed by a rough finishing device, and then rough finishing is performed by a rough finishing device, a middle finishing device, and a final finishing device.
By performing the intermediate finishing and the final finishing, a plurality of finishing processes can be continuously performed by one turning device, and the work efficiency is improved.

In the cylindrical inner surface finishing method according to the eighteenth aspect of the present invention, since the pressing force applied to the cylindrical hole of the finishing device is successively and successively reduced, the finishing surface effect is further improved.

[0048]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view showing a cylindrical inner surface finishing apparatus according to an embodiment of the present invention, FIG. 2 is a side view of a main portion of FIG. 1, and FIG. 3 is a front view showing a second finishing apparatus according to an embodiment of the present invention. ,
FIG. 4 is a side view of FIG. 3, and FIG. 5 is a detailed view of essential parts showing an example of processing by a cylindrical inner surface finishing device according to an embodiment of the present invention. The corresponding parts shown in FIGS. Are denoted by the same reference numerals and description thereof will be omitted. In the figure,
10 is a first finishing device including a conventional honing device,
Reference numeral 11 denotes a first shaft portion having a conical portion 11a, and 12 denotes a first shaft portion 1 which is provided in parallel along the axial direction of the first shaft portion 11.
1 is arranged so as to be movable in the radial direction and the slope portion 12
a holding portion provided with a, 13 is a rectangular bar-shaped horn finishing grindstone held by the holding portion 12 and arranged in a plurality of rows along the circumferential direction, and 14 is an oil supply for radially expanding the horn finishing grindstone 13. A pressurizing device comprising an apparatus 14a and a rotary fluid coupling 14b, and 15 are provided on both ends of the holding portion 12 in the axial direction and are attached to the first spring member and the first shaft portion 11 for radially reducing the horn finishing grindstone 13. The tightening device includes a second spring member that is mounted and biases in the axial direction. A second numeral 16 is provided with a plurality of linear elastic members 3 radially provided on the outer periphery of the second shaft portion 17 and a spherical abrasive grain 4 fixed to the tip thereof and having a finer grain than the horn finishing stone 13. The finishing device.
The diameter dimension formed by these spherical abrasive grains 4 is a predetermined dimension (for example, 5 to 10 m) than the inner diameter dimension of the cylindrical hole 6 of the workpiece 5.
m) Largely formed. Reference numeral 18 is a cross hatch formed on the inner surface of the cylindrical hole 6 of the workpiece 5 by fine abrasive grain marks.

Next, the operation will be described. That is, a cylindrical inner surface finishing method using the cylindrical inner surface finishing device according to one embodiment of the present invention will be described. First, as a first processing procedure, the first finishing device 10 attached to the rotating device (not shown) via the slide joint is inserted into the cylindrical hole 6 of the workpiece 5, and the pressing device 14 applies the pressure. By pressing, the horn finishing grindstone 13 is expanded and pressed against the inner surface of the cylindrical hole 6. Then, while the cutting fluid is supplied to the machining surface, the first device is operated by the rotating device.
After the finishing device 10 is axially rotated to perform axial feed at a predetermined feed speed (for example, about 90 mm / min) once or only once, the horn finishing grindstone 13 is reduced in diameter by the tightening device 15. The first finishing device 10 is pulled out from the cylindrical hole 6. By such processing, the inner diameter of the cylindrical hole 6 can be finished with accurate cylindricity and roundness.

Next, as a second machining procedure, the first finishing device 10 mounted on the rotating device in the first machining procedure.
Then, the second finishing device 16 is attached, and the second finishing device 16 is inserted into the cylindrical hole 6 and pivoted. In this case, the second
The spherical abrasive grains 4 of the finishing device 16 are pressed against the inner surface of the cylindrical hole 6 by the elastic force of the linear elastic member 3 and have a predetermined rotation speed (for example, about 140 rpm) and a predetermined feed speed (for example, about 140 rpm). At 6000 mm / min), the cutting fluid is supplied to the machining surface and is reciprocated a plurality of times along the axial direction. After performing such finishing, the second finishing device 16 is pulled out from the cylindrical hole 6. By this processing, the inner surface of the cylindrical hole 6 is super-finished, and the inner surface of the cylindrical hole 6 has a cross hatch 18 (for example, a cross angle of about 22 degrees) in which fine abrasive grain marks are crossed by the spherical abrasive grains 4. Is formed. The crosshatch 18 serves as an oil reservoir for lubricating oil to ensure smooth movement of the piston or the like that slides in the cylindrical hole 6, and prevents accidents due to seizure of the sliding portion.

As described above, conventionally, the rough finishing process and the final finishing process were carried out by using the respective rotating devices, but according to this embodiment, the first finishing device 10 and the second finishing device 10 are used.
The finishing device 16 can be continuously operated using the same turning device. That is, first, the first finishing device 10
Accurately finishes the cylindricity and roundness, and then the second finishing device 16 can finish the inner surface of the cylindrical hole 6 with fine abrasive grains and minute contact pressure. Can be obtained.

Example 2. FIG. 6 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.
20 is a shaft part, 21 is a conventional cylindrical grindstone, for example, a cylindrical hole 6
The first finishing device is arranged on the shaft portion 20 at a predetermined interval so as to be shorter than the processing length of the above. The diameter of this first finishing device 21 is formed to be substantially the same as the finished size of the cylindrical hole 6. Reference numeral 22 includes a plurality of linear elastic members 3 radially provided on the shaft portion 20 between the first finishing devices 21 and spherical abrasive grains 4 fixed to the tip end portions of the linear elastic members 3. This is the second finishing device, and this second finishing device 2
The diameter of 2 is larger than the diameter of the first finishing device 21 by a predetermined dimension.

Next, the operation will be described. The shaft portion 20, one end of which is attached, is inserted into the cylindrical hole 6 of the workpiece 5 by a turning device (not shown) while being turned. In this case, first, the cylindrical hole 6 is processed by the first finishing device 21, and then the linear elastic member 3 is processed by the second finishing device 22.
Finishing is performed while the spherical abrasive grains 4 adhered to are elastically contacting the inner surface of the cylindrical hole 6. Therefore, according to this embodiment,
With the first finishing device 21, it is possible to perform finishing while maintaining the central position of the machining axis while maintaining the cylindricity, and with the second finishing device 22, it is possible to simultaneously form a fine finished surface.

Example 3. FIG. 7 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.
A finishing device 23 is provided with a plurality of linear elastic members 3 radially provided on the shaft portion 20 between the guide rings 24 and spherical abrasive grains 4 fixed to the tip end portions of the linear elastic members 3. The finishing device 23 has a diameter larger than the inner diameter of the cylindrical hole 6 by a predetermined dimension. The guide ring 24 is arranged on the shaft portion 20 at a predetermined interval so as to be smaller than the processing length of the cylindrical hole 6. The diameter of the guide ring 24 is larger than the inner diameter of the cylindrical hole 6 by a predetermined dimension (for example, 0.05 to
It is formed small (about 0.1 mm).

Next, the operation will be described. First, the shaft 2
The operator holds one end of 0 by hand and inserts the guide ring 24 and the finishing device 23 into the inner surface of the cylindrical hole 6, and then slides the shaft in the axial direction while repeatedly rotating in the circumferential direction. At this time, the spherical abrasive grains 4 of the finishing device 23 elastically contact the inner surface of the cylindrical hole 6 to perform the finishing process. According to this embodiment, since the diameter of the guide ring 24 is formed to be smaller than the inner diameter of the cylindrical hole 6 by a predetermined dimension, the machining shaft is eccentric by this dimension, but the elastic deformation amount of the linear elastic member 3 is reduced. Since the amount is small compared with the above, there is no difference in processing due to absorption by this elastic deformation amount. Therefore, even if the workpiece 5 is large and difficult to move, or even if the axis of the cylindrical hole 6 is deviated in an oblique direction, both ends of the machining diameter in the axial direction can be easily expanded without tapering. Can be finished by hand.

Example 4. FIG. 8 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.
A first numeral 25 is provided with a plurality of first linear elastic members 26 radially provided on the shaft portion 20 and spherical abrasive grains 4 fixed to the tip of the first linear elastic member 26. The finishing device has an outer diameter larger than the inner diameter of the cylindrical hole 6 by a predetermined dimension (for example, about 6 to 10 mm). Reference numeral 27 is a second finishing device provided at both axial ends of the first finishing device 25, and includes a plurality of second linear elastic members 28 radially protruding from the shaft portion 20 and the second linear elastic members 28. Linear elastic member 2
8 and a spherical abrasive grain 4 fixed to the tip of the cylindrical hole 6, the outer diameter of which is larger than the inner diameter of the cylindrical hole 6 by a predetermined dimension (eg, 3 to 5 mm).
It is formed large. The second finishing device 27
The second linear elastic member 28 is more rigid than the first linear elastic member 26 of the first finishing device 25.

Next, the operation will be described. First, the shaft 2
The operator holds one end of 0 by hand and puts it on the inner surface of the cylindrical hole 6
The finishing device 27 and the first finishing device 25 are inserted, and then they are slid in the axial direction while repeatedly rotating in the circumferential direction.
At this time, finishing is performed by the spherical abrasive grains 4 of the second finishing device 27 and the first finishing device 25 elastically contacting the inner surface of the cylindrical hole 6. According to this embodiment, the second linear elastic member 28 of the second finishing device 27 is stiffer than the first linear elastic member 26 of the first finishing device 25, and thus elastically deforms. Since the amount is small, it is possible to perform the finish processing while maintaining the cylindricity while easily maintaining the center position of the processing axis.

Example 5. FIG. 9 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention, and FIG. 10 is a side view of FIG. 9, in which 30 is a rotating device 3 such as a motor.
Two first gears 33, which are directly connected to the two and mounted on the first shaft portion 31 which is pivoted, are arranged around the first gear 30 so as to mesh with the first gear 30. The second shaft 3
The second gear 35, which is rotatably supported by 4, is provided on the left and right sides of the second gear 33 so as to mesh with the second gear 33.
The third gear is rotatably supported by the third shaft portions 38 arranged individually. Reference numeral 37 is a finishing device including a plurality of linear elastic members 3 radially provided on the third shaft portion 38 and spherical abrasive grains 4 fixed to the tip end of the linear elastic member 3. The outer diameter is formed larger than the inner diameter of the cylindrical hole 6 by a predetermined dimension. The first shaft portion 31, the second shaft portion 34, and the third shaft portion 38 are rotatably supported by bearings (not shown).

Next, the operation will be described. First, a plurality of workpieces 5 are arranged at positions corresponding to the third shaft portion 38, the finishing device 37 is inserted into the cylindrical holes 6 of these workpieces 5, and then the turning device 32. Rotation of the first gear 3
0, the second gear 33, and the third gear 35 are sequentially meshed with each other to transmit the rotation, and as a result, the finishing device 37 provided on the third shaft portion 38 pivots to rotate the inner surface of the cylindrical hole 6. Finish processing. As described above, according to this embodiment, the cylindrical holes 6 of the plurality of workpieces 5 can be machined at the same time, so that the working efficiency is improved.

Example 6. FIG. 11 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention. In this embodiment, an inspection taper ring 43 is used instead of the guide ring 24 provided on the side opposite to the workpiece 5 in the guide ring 24 in the third embodiment. In the figure, 40 is a finishing device corresponding to the finishing device 23 in the third embodiment, and 41 is a shaft portion corresponding to the shaft portion 20 in the third embodiment. In the inspection taper ring 43, the small end diameter on the finishing device 40 side is formed to be the lower limit of the finishing dimension tolerance of the cylindrical hole 6, and the large end diameter on the anti-finishing device 40 side is set to the upper limit of the finishing dimension tolerance of the cylindrical hole 6. The formed tapered member serves to maintain the axial center position during the sliding process of the inner surface of the cylindrical hole 6 and the inspection of the processed hole diameter.

Next, the operation will be described. First, the shaft 4
A worker holds one end of the shaft 1 by hand and inserts the guide ring 24, the finishing device 40, and the inspection taper ring 43 into the inner surface of the cylindrical hole 6 in this order. Sliding in the axial direction while repeatedly rotating. At this time, the spherical abrasive grains 4 of the finishing device 40 elastically contact the inner surface of the cylindrical hole 6 to complete the finishing process. In addition, the inspection taper ring 43 is brought into contact with the end surface of the cylindrical hole 6 during the finishing process. At this time, when the small end diameter of the inspection taper ring 43 does not enter the cylindrical hole 6, it is out of the predetermined finish dimension tolerance, and therefore, further finishing processing is performed as described above.
When the small end diameter of the inspection taper ring 43 enters the cylindrical hole 6 and the large end diameter part thereof does not enter the cylindrical hole 6, it means that the inspection finishes within the predetermined finish dimension tolerance, and the machining is finished. As described above, according to this embodiment, since the inspection taper ring 43 is provided, the same effect as that of the third embodiment can be obtained, and the inspection process which is conventionally performed separately can be performed simultaneously with the finishing process. You can

Example 7. FIG. 12 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention. In the drawing, a cylindrical finishing grindstone 44 is used in place of the guide ring 24 in the sixth embodiment, and the configuration of the other members is the same as that of the sixth embodiment, so the description thereof is omitted.

Next, the operation will be described. The operation is almost the same as that of the sixth embodiment, except that the finishing operation is performed with the spherical abrasive grains 4 of the finishing device 40 while adjusting the inner diameter of the cylindrical hole 6 with the cylindrical finishing grindstone 44. That is, the shaft portion 41 having one end attached thereto is inserted into the cylindrical hole 6 while being rotated by a rotating device (not shown). In this case, first, the cylindrical hole 6 is processed by the cylindrical finishing grindstone 44, and subsequently, the spherical abrasive grains 4 fixed to the linear elastic member 3 by the finishing device 40 are elastically contacted with the inner surface of the cylindrical hole 6 for finishing. I do. Therefore, according to this embodiment, the cylindrical finishing wheel 44
Thus, finishing processing can be performed while maintaining the cylindricity while maintaining the center position of the processing axis, and the finishing device 40 can simultaneously form a fine finishing surface. Since the operation and effect of the inspection taper ring 43 are the same as those in the sixth embodiment, the description thereof will be omitted.

Example 8. FIG. 13 is a front view showing a cylindrical inner surface finishing apparatus according to an embodiment of the present invention. In the figure, reference numeral 45 is a shaft portion, and 46 is a first shaft which is pivotally supported on an end of the shaft portion 45 on the workpiece 5 side. Guide ring 47, a second guide ring 47 supported by the shaft portion 45 at a predetermined distance from the first guide ring 46 on the side opposite to the workpiece 5, and 48 a second guide ring.
Is a third guide ring pivotally supported by the shaft portion 45 at a predetermined distance from the guide ring 47 on the side opposite to the workpiece 5. 49 is the first guide ring 46 and the second guide ring 4
7, a plurality of linear elastic members 3 radially protruding from the shaft 45 and a spherical rough abrasive grain 50 formed of coarse abrasive grains fixed to the tip of the linear elastic member 3. The first finishing device 51 includes a plurality of linear elastic members 3 radially protruding from the shaft portion 45 between the second guide ring 47 and the third guide ring 48 and the linear shape thereof. The second finishing device includes a spherical finishing abrasive grain 52 fixed to the tip of the elastic member 3 and formed of fine abrasive grains. First guide ring 46, second
The outer diameters of the guide ring 47 and the third guide ring 48 are smaller than the inner diameter of the cylindrical hole 6 by a predetermined dimension (for example, 0.05 to
The first finishing device 4 is formed to be small (about 0.1 mm).
9, the outer diameter of the second finishing device 51 is formed the same,
In addition, the inner diameter of the cylindrical hole 6 has a predetermined dimension (for example, 6 to 10).
It is formed to be large (about mm).

Next, the operation will be described. First, the shaft 4
The operator manually holds one end of No. 5 and puts it on the inner surface of the cylindrical hole 6
Insert the finishing device 49 of the first guide ring 46 and the second guide ring 46
While keeping the center of the axis with the guide ring 47, it is repeatedly rotated by hand and slid in the axial direction. At this time, rough finishing is performed by the spherical rough abrasive grains 50 of the first finishing device 49 elastically contacting the inner surface of the cylindrical hole 6. Next, the shaft portion 45 is further inserted in the axial direction to attach the second finishing device 51 to the cylindrical hole 6
Second guide ring 47 and third guide ring 4
While keeping the axial center with 8 and 8, it is slid in the axial direction while repeatedly rotating by hand in the same manner as above. At this time, the final finishing is performed by the spherical finishing abrasive grains 52 of the second finishing device 51 elastically contacting the inner surface of the cylindrical hole 6. As described above, according to this embodiment, the cylindrical hole 6 can be flexibly subjected to final finishing by a continuous operation.

Example 9. FIG. 14 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention, FIG. 15 is a detailed view of a main part of FIG. 14, and FIGS. 16 and 17 are operations of the cylindrical inner surface finishing device according to an embodiment of the present invention. FIG. 3 is a side view showing details, in which spherical abrasive grains 54 are used in place of the spherical abrasive grains 4 in Example 1. 53 is a shaft portion 45
The finishing device is provided with a plurality of linear elastic members 3 which are radially provided on the outer periphery of and the spherical abrasive grains 54 fixed to the tips thereof. The spherical abrasive grain 54 has a hemispherical portion formed of coarse abrasive grains 55 having a coarse grain size, and the other hemispherical portion formed of finishing abrasive grains 56 having a fine grain size. The outer diameter of the finishing device 53 is larger than the inner diameter of the cylindrical hole 6.

Next, the operation will be described. First, one end of the shaft portion 45 of the finishing device 53 is held and inserted into the cylindrical hole 6, and the shaft portion 45 is rotated in a direction in which the rough abrasive grains 55 of the spherical abrasive grains 54 slide on the inner surface of the cylindrical hole 6. . At this time, the linear elastic member 3 elastically deforms rearward in the rotating direction, so that the spherical abrasive grains 5
The rough abrasive grains 55 of No. 4 slide on the inner surface of the cylindrical hole 6 for rough machining.
Next, when the shaft portion 45 is rotated in the opposite direction to the above, the linear elastic member 3 elastically deforms rearward in the rotation direction, so that the finishing abrasive grains 56 of the spherical abrasive grains 54 slide on the inner surface of the cylindrical hole 6. And finish processing. Therefore, according to this embodiment, the rough finishing and the final finishing of the inner surface of the cylindrical hole 6 can be continuously and efficiently performed only by reversing the rotating direction of the shaft portion 45.

Example 10. FIG. 18 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention, and FIG.
In the figure, reference numeral 57 includes a plurality of linear elastic members 3 radially provided on the outer periphery of the shaft portion 45 and a plurality of rod-shaped grindstones 58 fixed to the tip thereof and formed in a rod shape. It is a finishing device. The outer diameter of the finishing device 57 is larger than the inner diameter of the cylindrical hole 6.

Next, the operation will be described. First, one end of the shaft portion 45 of the finishing device 57 is held and inserted into the cylindrical hole 6 to rotate the shaft. At this time, since the linear elastic member 3 is elastically deformed rearward in the rotating direction, the repulsive force of the linear elastic member 3 causes the rod-shaped grindstone 5 to move.
8 slides on the inner surface of the cylindrical hole 6 for finishing. Therefore,
According to this embodiment, by providing the rod-shaped grindstone 58, it is possible to obtain a finished surface having straightness along the axial direction.

Example 11. 20 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention, and FIG.
22 is a side view showing details of the operation of the cylindrical inner surface finishing device according to one embodiment of the present invention. In the figure, a rod-shaped grindstone 60 is used in place of the rod-shaped grindstone 58 in the tenth embodiment. It is a thing. Reference numeral 59 is a finishing device provided with a plurality of linear elastic members 3 radially provided on the outer periphery of the shaft portion 45 and a rod-shaped grindstone 60 fixed to the tip thereof. The rod-shaped grindstone 60 has one side half formed of coarse abrasive grains 61 having a coarse grain size, and the other half side formed of finishing grain 62 having a fine grain size with the position of the linear elastic member 3 as a boundary. The outer diameter of the finishing device 59 is larger than the inner diameter of the cylindrical hole 6.

Next, the operation will be described. First, one end of the shaft portion 45 of the finishing device 59 is held and inserted into the cylindrical hole 6, and the shaft is rotated. The rough abrasive grains 61 of the rod-shaped grindstone 60 rotate the shaft portion 45 in the direction of sliding on the inner surface of the cylindrical hole 6. At this time, the linear elastic member 3 elastically deforms rearward in the rotating direction, so that the rough abrasive grains 61 of the rod-shaped grindstone 60 slide on the inner surface of the cylindrical hole 6 for rough machining. Next, when the shaft portion 45 is rotated in the opposite direction to the above, the linear elastic member 3 elastically deforms rearward in the rotation direction, so that the finishing abrasive grains 62 of the rod-shaped grindstone 60 slide on the inner surface of the cylindrical hole 6. Finish processing. Therefore, according to this embodiment,
Rough finishing and final finishing of the inner surface of the cylindrical hole 6 can be continuously and efficiently performed only by reversing the rotating direction of the shaft portion 45.

Example 12 FIG. 23 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention. In the figure, 63 is a finishing device. In this embodiment, a horn finishing grindstone 64 including rough abrasive grains 65 and finishing abrasive grains 66 is used instead of the horn finishing grindstone 13 in the first embodiment. The horn finishing grindstone 64 is a rod-shaped horn finishing grindstone, in which the side of the workpiece 5 in the axial direction is formed of coarse abrasive grains 65 having a coarse grain size, and the side of the workpiece 5 in the axial direction is formed of fine polishing grains 66 having a fine grain size. ing. Note that the configurations of the other members are the same as in the case of the first embodiment, and therefore their explanations are omitted.

Next, the operation will be described. First, the rough abrasive grain 65 portion of the horn finishing grindstone 64 is inserted into the cylindrical hole 6 through a sliding joint mounted on a turning device (not shown). Then, the horn finishing grindstone 64 is expanded in diameter by the pressurizing device 14, and the rough abrasive grains 65 are rotated while being pressed against the inner surface of the cylindrical hole 6 for sliding processing. That is, this is roughing. Next, the horn finishing grindstone 64 having the expanded diameter is tightened by the tightening device 15
The diameter of the first shaft 11 is further reduced by advancing, and the portion of the finished abrasive grains 66 is positioned in the cylindrical hole 6. Then, the pressurizing device 14 expands the diameter of the horn finishing grindstone 64 to finish the finishing abrasive grains 66.
Is pressed against the inner surface of the cylindrical hole 6 and rotated to perform a sliding process, which is a finishing process. When this processing is completed, the horn finishing grindstone 64 is reduced in diameter by the tightening device 15 and pulled out from the inside of the cylindrical hole 6. Therefore, according to this embodiment, rough finishing and final finishing of the inner surface of the cylindrical hole 6 can be continuously and efficiently performed.

Example 13 FIG. 24 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention. In the figure, the second finishing device 16 is provided at the tip of the first shaft portion 11 of the first finishing device 10 in the first embodiment. That is, 67 is a first finishing device corresponding to the first finishing device 10, 68 is a horn finishing whetstone corresponding to the horn finishing whetstone 13, 69 is a second finishing device corresponding to the second finishing device 16, and 70. Is a spherical abrasive grain corresponding to the spherical abrasive grain 4. The axial length of the second finishing device 69 is longer than the axial length of the first finishing device 67 (for example, in the range of twice the axial length of the first finishing device 67). Note that the configurations of the other members are the same as in the case of the first embodiment, and therefore their explanations are omitted.

Next, the operation will be described. First, the first finishing device 67 is inserted so as to be positioned in the cylindrical hole 6 via a sliding joint attached to a turning device (not shown). Then, the pressurizing device 14 expands the diameter of the first finishing device 67,
The horn finishing grindstone 68 is rotated while being pressed against the inner surface of the cylindrical hole 6 for sliding processing. That is, this is roughing. Next, the diameter of the expanded first finishing device 67 is reduced by the tightening device 15 to retract the first shaft portion 11, the second finishing device 69 portion is positioned in the cylindrical hole 6, and the first finishing device 69 is rotated. Move and slide in the axial direction. That is, the second finishing device 6
9 spherical abrasive grain 70 is used for finishing. When this processing is completed, the first shaft portion 11 is retracted and pulled out from the inside of the cylindrical hole 6. Therefore, according to this embodiment, rough finishing and final finishing of the inner surface of the cylindrical hole 6 can be continuously and efficiently performed.

Example 14 25 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention, and FIG. 26 is a front view showing an operation of the cylindrical inner surface finishing device according to an embodiment of the present invention. In the figure, reference numeral 71 denotes a rubber-like elastic member having a shaft 72 that is mounted on a rotating device (not shown) and is rotated and has abrasive grains 73 fixed to the outer peripheral surface thereof, and a pressure fluid such as compressed air is supplied and discharged. A cylindrical bag-shaped elastic finishing device provided with a pressure supply / discharge device 74 and cylindrical plate guide rings 75 provided on both sides in the axial direction of the rubber-like elastic member. The rubber-like elastic member of the cylindrical bag-shaped elastic finishing device 71 is expandable and contractable so that the pressure fluid supplied and discharged by the pressure supply / discharge device 74 can secure an appropriate pressing force according to the finishing dimension of the cylindrical hole 6. Is formed in. The diameter of the guide ring 75 is smaller than the inner diameter of the cylindrical hole 6 by about 0.05 to 0.1 mm.

Next, the operation will be described. First, the shaft 72 is attached to a turning device (not shown), and the cylindrical bag-shaped elastic finishing device 71 is inserted into the cylindrical hole 6 so as to be positioned therein. Then, the pressure supply / drainage device 74 supplies the pressure fluid to the cylindrical bag-shaped elastic finishing device 71 so that the cylindrical bag-shaped elastic finishing device 7
1 is expanded and brought into pressure contact with the inner surface of the cylindrical hole 6. In this state, the cylindrical bag-shaped elastic finishing device 71 is rotated while maintaining the axial center by the guide ring 75 to perform reciprocal sliding processing in the axial direction. When this processing is completed, the pressure supply / drainage device 74 discharges the pressure fluid in the cylindrical bag-shaped elastic finishing device 71 to contract the cylindrical bag-shaped elastic finishing device 71 so that the cylindrical bag-shaped elastic finishing device 71 is opened in the cylindrical hole. Pull out from inside 6. Therefore,
According to this embodiment, the cylindrical bag-shaped elastic finishing device 71 can be easily expanded and contracted by the pressure supply / discharge device 74 to efficiently perform finishing, and the cylindrical bag-shaped elastic finishing device 71 can be axially moved. Since the axial center can be maintained by the guide ring 75 when sliding it to, the one-sided machining can be prevented and the finishing can be performed with high accuracy.

Example 15. FIG. 27 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention. In the drawing, reference numeral 45 is a shaft portion, 46 is a first guide ring pivotally supported by the end of the shaft portion 45 on the workpiece 5 side, and 47 is a portion from the first guide ring 46 to the opposite workpiece 5 side. A second guide ring, which is pivotally supported by the shaft portion 45 at a predetermined interval, is a second guide ring 48.
Is a third guide ring pivotally supported by the shaft portion 45 at a predetermined distance from the guide ring 47 on the side opposite to the workpiece 5. 76 is the first guide ring 46 and the second guide ring 4
The first linear elastic member 77 having a plurality of rigidity, which is radially provided on the shaft portion 45 between the first linear elastic member 77 and the rough abrasive grains. And 79 for the shaft portion 4 between the second guide ring 47 and the third guide ring 48.
5, a plurality of flexible second linear elastic members 80 radially projected, and a spherical finishing abrasive formed of fine abrasive grains fixed to the tip of the second linear elastic member 80. Grain 81
And a second finishing device including and. First guide ring 4
6, the outer diameter of the second guide ring 47 and the outer diameter of the third guide ring 48 are smaller than the inner diameter of the cylindrical hole 6 by a predetermined dimension. The outer diameter of the second finishing device 79 is the first
Is formed larger than the outer diameter of the finishing device 76 and is larger than the inner diameter of the cylindrical hole 6 by a predetermined dimension (for example, 6 to 10 mm).
It is formed large.

Next, the operation will be described. First, the shaft 4
The operator manually holds one end of No. 5 and puts it on the inner surface of the cylindrical hole 6
Inserting the finishing device 76 of the first guide ring 46 and the second guide ring 46
While keeping the center of the axis with the guide ring 47, it is repeatedly rotated by hand and slid in the axial direction. At this time, the spherical rough abrasive grains 78 of the first finishing device 76 elastically contact the inner surface of the cylindrical hole 6 to perform rough finishing. Next, the shaft portion 45
Is further inserted in the axial direction to accommodate the second finishing device 79 in the cylindrical hole 6, and the second guide ring 47 and the third guide ring 48 keep the axial center, and repeat by hand as described above. While rotating, slide it in the axial direction. At this time, the final finishing process is performed by the spherical finishing abrasive grains 81 of the second finishing device 79 elastically contacting the inner surface of the cylindrical hole 6. As described above, according to this embodiment, the cylindrical hole 6 can be flexibly subjected to final finishing by a continuous operation.

Example 16 28 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention, and FIG.
FIG. In the figure, reference numeral 83 is a first gear mounted on a first shaft portion 84 which is directly connected to a rotation device 85 such as a motor and is pivoted, and 86 is a first gear which meshes with the first gear 83. Is a second gear that is rotatably supported by a second shaft 87 that is arranged in parallel with the shaft 84 of the first gear 83 and that has the same diameter as the first gear 83, and 88 is the first gear 83 and the second gear. Four third shafts 89 are provided around the first gear 83 and the second gear 86 so as to mesh with the gear 86.
3 is a third gear that is axially supported by. Finishing device 90
Is a finishing device provided with a plurality of linear elastic members 3 radially protruding from the third shaft portion 89 and spherical abrasive grains 4 fixed to the tip end portions of the linear elastic members 3. , For example 8
It is a device for finishing a cylinder hole 6 of a cylinder compressor or an engine cylinder. The outer diameter of the finishing device 90 is larger than the inner diameter of the cylindrical hole 6 by a predetermined dimension. The first shaft portion 84, the second shaft portion 87, and the third shaft portion 89 are rotatably supported by bearings (not shown).

Next, the operation will be described. First, after each finishing device 90 is inserted into the cylindrical hole 6 of the workpiece 5, the turning device 85 is turned to rotate the first gear 83 and the second gear 8.
6. As a result of the 6 and third gears 88 sequentially meshing and the rotation is transmitted, the finishing device 90 provided on the third shaft portion 89 pivots to finish the inner surface of the cylindrical hole 6. As described above, according to this embodiment, a plurality of cylindrical holes 6 can be machined in the workpiece 5 at the same time, so that the working efficiency is improved.

Example 17 FIG. 30 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention, and FIG. 31 is FIG.
FIG. In the figure, reference numeral 83 is a first gear mounted on a first shaft portion 84 which is directly connected to a rotating device 85 such as a motor and is pivoted, and 91 is a first gear so as to mesh with the first gear 83. The second gear is pivotally supported by the second shaft portion 92 arranged in parallel at four positions around the gear 83. Reference numeral 94 denotes a plurality of linear elastic members 3 radially provided on one of the second shaft portions 92 and spherical abrasive grains 93 having a coarse grain size fixed to the tip of the linear elastic member 3. The rough finishing device 94 and the rough finishing device 94a are provided so as to be adjacent to the rough finishing device 94, and the rough finishing device 94b includes the spherical abrasive grains 93a having a particle size smaller than that of the spherical abrasive grains 93. A medium finishing device equipped with spherical abrasive grains 93b having a grain size smaller than the grain size and arranged so as to be adjacent to the rough finishing device 94a, and 94c is a medium finishing device provided with spherical abrasive grains 93c having a grain size smaller than that of the spherical abrasive grains 93b. The final finishing device is arranged so as to be adjacent to 94b. The outer diameter of these finishing devices is larger than the inner diameter of the cylindrical hole 6 by a predetermined dimension. The first shaft portion 84 and the second shaft portion 92 are rotatably supported by bearings (not shown).

Next, the operation will be described. First, after the rough finishing device 94 is inserted into the cylindrical hole 6 of the workpiece 5, the turning device 85 is turned to rotate the first gear 83 and the second gear 9.
1 is engaged and the rotation is transmitted, and the rough finishing device 94 provided on the second shaft portion 92 pivots to rough finish the inner surface of the cylindrical hole 6. Then, the rough finishing device 94 is pulled out from the cylindrical hole 6. Next, in the same manner, the rough finishing device 94
a, the intermediate finishing device 94b, and the final finishing device 94c as the cylindrical hole 6
Insert inside to perform rough finish, intermediate finish and final finish. As described above, according to this embodiment, since a plurality of finishing processes can be continuously performed by one turning device, work efficiency is improved. In addition, the insertion / removal work for the cylindrical hole 6 of each finishing device and the movement to a predetermined position in the next finishing process are as follows.
This is performed by moving a predetermined work surface plate such as a milling machine or boring machine (not shown), or by moving a machine head equipped with each finishing device.

Example 18. 32 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention, and FIG. 33 is a side view showing an operation of the cylindrical inner surface finishing device according to an embodiment of the present invention. In the figure, reference numeral 96 is a finishing device provided with a plurality of linear elastic members 3 radially provided on the outer periphery of the shaft portion 45 and spherical abrasive grains 4 fixed to the tips thereof. The diameter of the spherical abrasive grains 4 is smaller than the inner diameter of the cylindrical hole 6 of the workpiece 5 by a predetermined dimension.

Next, the operation will be described. First, as a first processing procedure, the shaft portion 45 is attached to a turning device (not shown), and the axial center of the cylindrical hole 6 is aligned with that of the shaft portion 45.
The finishing device 96 is inserted therein. Next, the finishing device 96 is brought into contact with the inner surface of the cylindrical hole 6, and the shaft portion 45 is moved and positioned so that the linear elastic member 3 of the finishing device 96 bends by a predetermined amount (for example, 10 mm). In this case, the eccentric distance of the shaft portion 45 with respect to the shaft center of the cylindrical hole 6 is defined as "first rotation eccentric diameter".
And Then, the shaft portion 45 is rotated and the inner surface of the cylindrical hole 6 is ground by the finishing device 96 so as to reciprocate in the axial direction as well, and the shaft portion 45 of the cylindrical hole 6 is retained while maintaining the first rotational eccentric diameter. The entire inner surface of the cylindrical hole 6 is machined by making a circular motion with respect to the axis. Next, as a second processing procedure, the shaft portion 45 is moved and positioned to a position that is smaller than the "first rotational eccentric diameter" in the first processing procedure. That is, in the second processing procedure, the finishing device 9
The pressing force of 6 on the cylindrical hole 6 is smaller than that in the first processing procedure. In this case, the eccentric distance of the shaft portion 45 with respect to the shaft center of the cylindrical hole 6 is defined as "second rotational eccentric diameter".
And While maintaining the second turning eccentric diameter, the entire inner surface of the cylindrical hole 6 is machined in the same manner as in the case of the first machining procedure. Finally, as a third processing procedure, the shaft portion 45 is further moved and positioned to a position smaller than the "second rotational eccentric diameter" in the second processing procedure. That is, in the third processing procedure, the pressing force of the finishing device 96 against the cylindrical hole 6 is smaller than that in the second processing procedure. In this case, the eccentric distance of the shaft portion 45 with respect to the shaft center of the cylindrical hole 6 is defined as "third rotation eccentric diameter".
And While maintaining the third turning eccentric diameter, the entire inner surface of the cylindrical hole 6 is machined in the same manner as in the case of the first machining procedure. When the third processing procedure is completed, the shaft portion 45 is moved to the axial center position of the cylindrical hole 6, and the finishing device 96 is pulled out from the cylindrical hole 6 while the finishing device 96 does not touch the inner surface of the cylindrical hole 6. Ends.

In the above-mentioned embodiment, the processing has been described in which the turning eccentric diameter is gradually reduced, but the turning eccentric diameter may be continuously reduced. That is, for example, the shaft portion 45 is moved in a spiral manner with respect to the axis of the cylindrical hole 6 so that the turning eccentric diameter is continuously reduced and processing is performed. According to such processing, the pressing force of the finishing device 96 against the cylindrical hole 6 is successively and continuously reduced, so that the finishing surface effect is further improved.

Further, in the processing in any of the above-mentioned examples, in order to prevent the deterioration of the processing dimensional accuracy due to the clogging of the abrasive grains and the heat generation, the processing liquid such as cutting oil is poured into the processing portion. .

[0088]

As described above, according to the first aspect of the invention, the first finishing device having the horn finishing grindstone pressably provided on the inner surface of the cylindrical hole is rotated and moved in the axial direction of the cylindrical hole. The first processing procedure for rough-finishing the inner surface of the cylindrical hole by causing the second finishing device including the linear elastic member and the spherical abrasive grains to rotate after the first processing procedure, and Since it is configured so as to include the second machining procedure in which the inner surface of the cylindrical hole is finally finished by moving it in the axial direction of the cylindrical hole, the inner surface of the cylinder that can finish the cylindrical hole of the workpiece quickly and easily and accurately. There is an effect that a finishing method can be obtained.

According to the invention of claim 2, it has a first finishing device which is a cylindrical grindstone arranged on the shaft portion, and has a linear elastic member and spherical abrasive grains, and is larger than the first finishing device. Since the second finishing device having the diameter is provided, it is possible to obtain the cylindrical inner surface finishing device that can finish the cylindrical hole of the workpiece quickly and easily and accurately.

According to the third aspect of the present invention, there is provided a guide ring disposed on the shaft portion, and a finishing device having a linear elastic member and spherical abrasive grains and having a diameter larger than that of the guide ring. With this configuration, it is possible to obtain a cylindrical inner surface finishing device that can finish the cylindrical hole of the work piece quickly and easily and with high accuracy even by manual work.

According to the invention of claim 4, there is provided a first finishing device having a first linear elastic member and spherical abrasive grains, and the first finishing device.
A second finishing device having a second linear elastic member having a rigidity higher than that of the first finishing device and a spherical abrasive grain and having a diameter smaller than that of the first finishing device. Therefore, there is an effect that it is possible to obtain a cylindrical inner surface finishing device that can perform the finishing work of the cylindrical hole of the work piece quickly and easily and with high precision even by manual work.

According to the fifth aspect of the present invention, the first gear supported on the first shaft portion and the second gear supported on the second shaft portion so as to mesh with the first gear. A gear, a third gear rotatably supported by a third shaft portion so as to mesh with the second gear, a linear elastic member on the third shaft portion, and a spherical abrasive grain fixed to the tip portion thereof. Since it is configured so as to include a finishing device having the above, there is an effect that it is possible to obtain a cylindrical inner surface finishing device that can finish the plurality of cylindrical holes quickly and easily and accurately.

According to the invention of claim 6, a guide ring axially supported at the end of the shaft portion on the side of the workpiece, an inspection taper ring arranged at a distance from the guide ring, and the guide ring. Between the guide tape and the inspection taper ring, and a linear elastic member protruding from the shaft portion between the inspection taper ring and the inspection taper ring, and spherical abrasive grains fixed to the tip of the linear elastic member. Since it is configured so as to include a finishing device that is configured as described above, it is possible to obtain a cylindrical inner surface finishing device that can finish the cylindrical holes of a plurality of workpieces quickly and easily with high accuracy, and also perform the inspection process at the same time as the working process. There is an effect that can be done.

According to the invention of claim 7, a cylindrical finishing whetstone is rotatably supported at the end of the shaft portion on the side of the workpiece, and an inspection taper ring is provided at a distance from the cylindrical finishing whetstone. The cylindrical finishing whetstone and the inspection having a linear elastic member projecting from the shaft portion between the cylindrical finishing whetstone and the inspection taper ring and spherical abrasive grains fixed to the tip end portion thereof Since it is configured to have a finishing device formed to have a diameter larger than that of the taper ring, it is possible to perform the finishing process of the cylindrical holes of a plurality of workpieces quickly and easily with high precision, and the inspection process can be performed simultaneously with the machining process. There is an effect that the cylindrical inner surface finishing device can be obtained.

According to the invention of claim 8, the first guide ring pivotally supported by the shaft portion, the second guide ring, the third guide ring, the first guide ring and the second guide ring. A linear elastic member projectingly provided on the shaft between the guide ring and the guide ring, and a spherical rough abrasive grain fixed to the tip end of the elastic member, the second guide ring and the third finisher. The second finishing device having a linear elastic member protrudingly provided on the shaft portion between the guide ring and the second finishing device, and a spherical finishing abrasive grain fixed to the tip end portion of the linear elastic member. Also according to the above, there is an effect that it is possible to obtain a cylindrical inner surface finishing device which can finish the cylindrical hole of the work piece quickly and easily and accurately.

According to the ninth aspect of the present invention, it is provided with the linear elastic member protrudingly provided on the shaft portion and the spherical abrasive grain fixed to the tip thereof and having the rough abrasive grains and the finishing abrasive grains. Since it is configured as described above, there is an effect that it is possible to obtain a cylindrical inner surface finishing device that can finish the cylindrical hole of the workpiece quickly and easily and accurately.

According to the tenth aspect of the present invention, since the linear elastic member protruding from the shaft portion and the plurality of rod-shaped grindstones fixed to the tip of the linear elastic member are provided, the cylindrical hole of the workpiece is formed. There is an effect that it is possible to obtain a cylindrical inner surface finishing device that can perform the finishing process of (2) quickly, easily and accurately.

According to the eleventh aspect of the present invention, the linear elastic member projectingly provided on the shaft portion and the rod-shaped grindstone fixed to the tip of the linear elastic member and having the rough abrasive grains and the finishing abrasive grains are provided. Since it is configured as described above, there is an effect that it is possible to obtain a cylindrical inner surface finishing device that can finish the cylindrical hole of the workpiece quickly and easily and accurately.

According to the twelfth aspect of the present invention, there is provided a horn finishing grindstone and a press adjusting device for supporting the horn finishing grindstone on the inner surface of the cylindrical hole so that the horn finishing grindstone is rotatably formed. In the finishing device, since the rough abrasive grains are provided on the workpiece side of the horn finishing grindstone and the finishing abrasive grains are provided on the non-workpiece side, finishing of the cylindrical hole of the workpiece can be performed quickly and easily with high accuracy. There is an effect that it is possible to obtain a cylindrical inner surface finishing device that can perform well.

According to the thirteenth aspect of the present invention, there is provided a horn finishing grindstone and a pressing adjusting device for supporting the horn finishing grindstone on the inner surface of the cylindrical hole so that the horn finishing grindstone is rotatable. 1. A finishing device, a linear elastic member projecting from a shaft portion coaxial with the finishing device, and a spherical elastic grain fixed to the tip end of the finishing device. Since the second finishing device is provided and the diameter of the second finishing device is formed to be larger than the diameter of the first finishing device, the finishing of the cylindrical hole of the workpiece can be performed quickly and quickly. There is an effect that a cylindrical inner surface finishing device that can be easily and accurately performed can be obtained.

According to the fourteenth aspect of the present invention, the cylindrical bag-shaped elastic member is formed so as to wrap around the shaft portion and fix the abrasive grains to the outer peripheral surface so as to expand and contract. Since it is configured so as to include a pressure supply / discharge device for supplying or discharging, and guide rings provided on both sides in the axial direction of the cylindrical bag-shaped elastic member, finishing of the cylindrical hole of the workpiece can be performed quickly and easily. There is an effect that it is possible to obtain a cylindrical inner surface finishing device that can be accurately performed.

According to the invention of claim 15, a first guide ring pivotally supported by a shaft portion, a second guide ring, a third guide ring, the first guide ring and the second guide ring. Having a rigidity protruding from the shaft between the guide ring and the first guide ring
First finishing device having a linear elastic member and a spherical rough abrasive grain fixed to the tip thereof, and protrudingly provided on the shaft portion between the second guide ring and the third guide ring. A second finishing device having a flexible second linear elastic member and spherical finishing abrasive grains fixed to the tip end thereof and having a larger outer diameter than the first finishing device. Therefore, there is an effect that it is possible to obtain a cylindrical inner surface finishing device that can finish the cylindrical hole of the work piece quickly and easily and with high accuracy even by manual work.

According to the sixteenth aspect of the present invention, the first gear supported by the first shaft portion, the second gear supported by the second shaft portion, and the third shaft portion are supported. A third gear that is axially supported, and a linear elastic member that projects from the third shaft portion,
Since the spherical abrasive grains fixed to the tip portion are provided, there is an effect that it is possible to obtain a cylindrical inner surface finishing device that can finish the plurality of cylindrical holes quickly and easily and accurately.

According to the seventeenth aspect of the present invention, the first gear wheel pivotally supported by the first shaft section, the second gear wheel pivotally supported by the second shaft section, and the second shaft section are provided. A rough finishing device having a linear elastic member protruding from one of them and a spherical abrasive grain fixed to the tip end thereof; and a second roughing device provided with a spherical abrasive grain so as to be adjacent to the rough finishing device. A rough finishing device provided on the shaft portion of the above, and a medium finishing device provided on the second shaft portion so as to be adjacent to the rough finishing device provided with spherical abrasive grains, and adjacent to the medium finishing device provided with spherical abrasive grains. As described above, since the final finishing device provided on the second shaft portion is provided, it is possible to obtain a cylindrical inner surface finishing device that can finish the cylindrical hole of the workpiece quickly and easily and accurately. effective.

According to the eighteenth aspect of the present invention, the cylindrical inner surface finishing device is inserted into the cylindrical hole, brought into contact with the inner surface of the cylindrical hole, and the shaft portion is moved so that the linear elastic member bends, whereby the cylindrical inner surface finishing device is provided. The inner surface of the cylindrical hole is finished by rotating and reciprocating in the axial direction, and the entire inner surface of the cylindrical hole is moved by circularly moving the shaft portion with respect to the axis of the cylindrical hole. Since the finishing is performed and the shaft portion is moved so that the bending amount of the linear elastic member is reduced stepwise or continuously, the finishing of the cylindrical hole of the workpiece can be performed quickly and easily. There is an effect that it is possible to obtain a cylindrical inner surface finishing method that can be performed with high accuracy.

[Brief description of drawings]

FIG. 1 is a sectional view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 2 is a side view of a main part of FIG.

FIG. 3 is a front view showing a second finishing device according to an embodiment of the present invention.

FIG. 4 is a side view of FIG.

FIG. 5 is a detailed view of essential parts showing an example of processing by the cylindrical inner surface finishing device of one embodiment of the present invention.

FIG. 6 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 7 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 8 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 9 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 10 is a side view of FIG.

FIG. 11 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 12 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 13 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 14 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 15 is a detailed view of a main part of FIG.

FIG. 16 is a side view showing details of the operation of the cylindrical inner surface finishing device according to the embodiment of the present invention.

FIG. 17 is a side view showing details of the operation of the cylindrical inner surface finishing device according to the embodiment of the present invention.

FIG. 18 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 19 is a side view of FIG.

FIG. 20 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 21 is a detailed view of a main part of FIG. 20.

FIG. 22 is a side view showing details of the operation of the cylindrical inner surface finishing device according to the embodiment of the present invention.

FIG. 23 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 24 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 25 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 26 is a front view showing the operation of the cylindrical inner surface finishing device according to the embodiment of the present invention.

FIG. 27 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 28 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 29 is a side view of FIG. 28.

FIG. 30 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

31 is a side view of FIG. 30. FIG.

FIG. 32 is a front view showing a cylindrical inner surface finishing device according to an embodiment of the present invention.

FIG. 33 is a side view showing the operation of the cylindrical inner surface finishing device according to the embodiment of the present invention.

FIG. 34 is a perspective view showing a conventional cylindrical inner surface finishing method and a sectional view showing the structure of a grindstone used.

FIG. 35 is a cross-sectional view showing roughness curves after roughing and finishing according to a conventional cylindrical inner surface finishing method.

FIG. 36 is a front view showing a conventional cylindrical inner surface finishing device.

FIG. 37 is a side view showing the operation state of FIG. 36.

[Explanation of symbols]

3 linear elastic members, 4, 54, 70, 93, 93a-9
3c Spherical abrasive grain, 5 Workpiece, 6 Cylindrical hole, 10, 2
1, 25, 49, 67, 76 First finishing device, 11,
31, 84 1st shaft part, 13, 64, 68 horn finishing grindstone, 16, 22, 27, 51, 69, 79 2nd finishing device, 17, 34, 87, 92 2nd shaft part, 2
0,41,45,72 Shaft, 23,37,40,5
3,57,59,63,90,96 finishing device, 24,
75 guide ring, 26, 77 first linear elastic member,
28,80 Second linear elastic member, 30,83 First gear, 32,85 Rotating device, 33,86,91 Second
Gear, 35, 88 third gear, 38, 89 third shaft portion, 43 inspection taper ring, 44 cylindrical finishing grindstone, 46 first guide ring, 47 second guide ring, 48 third guide Ring, 50,78 Spherical rough abrasive, 52,81 Spherical finishing abrasive, 55,61,65 Rough abrasive, 56,62,66 Finishing abrasive, 58,60 Rod grindstone, 73 Abrasive, 74 Pressure supply / discharge device, 85 turning device, 94 rough finishing device, 94a rough finishing device, 94b
Medium finishing device, 94c Final finishing device.

Claims (18)

[Claims] 1. A first finishing device equipped with a horn finishing grindstone pressed against an inner surface of a cylindrical hole provided in a workpiece so as to be pressed against the inner surface of the cylindrical hole is mounted on a rotating device to be rotated. A first machining procedure for rough-finishing the inner surface of the cylindrical hole by moving it in the axial direction of the cylindrical hole, and a radial projection on a shaft portion mounted on the rotating device after the first machining procedure. The shaft portion of the second finishing device having a plurality of linear elastic members and spherical abrasive grains fixed to the tip thereof is mounted on the rotating device to rotate and the shaft of the cylindrical hole. And a second machining procedure for finally finishing the inner surface of the cylindrical hole by moving the inner surface of the cylindrical hole. 2. A first finishing device, which is a cylindrical grindstone in which a shaft portion to be rotated is arranged with a space, and a plurality of radially protruding projections on the shaft portion between the first finishing device. Inner surface of a second finishing device having a linear elastic member and a spherical abrasive grain fixed to the tip of the linear elastic member and having a diameter larger than that of the first finishing device. Finishing equipment. 3. A guide ring in which a shaft portion to be rotated is arranged with a space, a plurality of linear elastic members radially provided on the shaft portion between the guide rings, and the linear elasticity thereof. A cylindrical inner surface finishing device comprising: a spherical abrasive grain fixed to the tip of a member; and a finishing device having a diameter larger than that of the guide ring. 4. A plurality of first linear elastic members radially provided on a rotating shaft portion, and spherical abrasive grains fixed to a tip portion of the first linear elastic member. One finishing device, and a plurality of second finishing devices which are arranged at both axial end portions of the first finishing device and which are projected radially on the shaft portion and have rigidity higher than that of the first linear elastic member. And a second finishing device having a diameter smaller than that of the first finishing device and having a spherical abrasive grain fixed to the tip of the second linear elastic member. Cylinder inner surface finishing device. 5. A first gear that is pivotally supported by a first shaft portion that is directly connected to a rotation device and is rotated, and a plurality of first gears that are arranged around the first gear so as to mesh with the first gear. A second gear rotatably supported by a second shaft portion; a third gear rotatably supported by a plurality of third shaft portions arranged around the second gear so as to mesh with the second gear; A cylindrical inner surface finishing device comprising: a plurality of linear elastic members radially provided on the shaft portion of 3 and a finishing device having spherical abrasive grains fixed to the tip end of the linear elastic member. 6. A guide ring axially supported at the end of the rotating shaft portion on the side of the workpiece, an inspection taper ring arranged at a distance from the guide ring, the guide ring and the inspection taper. The guide ring and the inspection taper ring having a plurality of linear elastic members radially protruding from the shaft portion between the ring and a spherical abrasive grain fixed to the tip of the linear elastic member. And a finishing device formed to have a larger diameter. 7. A cylindrical finishing grindstone axially supported at the end of the rotating shaft part on the side of the workpiece, an inspection taper ring arranged at a distance from the cylindrical finishing grindstone, and the cylindrical shape. The cylinder having a plurality of linear elastic members radially provided on the shaft portion between the finishing grindstone and the inspection taper ring and spherical abrasive grains fixed to the tip of the linear elastic member. A cylindrical inner surface finishing device comprising: a finishing grindstone; and a finishing device having a diameter larger than that of the inspection taper ring. 8. A first guide ring rotatably supported at an end of the rotated shaft portion on the side of the workpiece, and the shaft at a distance from the first guide ring on the side opposite to the workpiece. A second guide ring rotatably supported on the shaft portion, a third guide ring rotatably supported on the shaft portion at a distance from the second guide ring on the side opposite to the workpiece, and the first guide ring. A plurality of linear elastic members radially provided on the shaft portion between the guide ring and the second guide ring, and fixed to the tip end portions of the linear elastic members and formed of coarse abrasive grains. And a plurality of linear elastic members radially provided on the shaft portion between the second guide ring and the third guide ring. A cylindrical inner surface provided with a second finishing device having a spherical finishing abrasive grain fixed to the tip of the linear elastic member and formed of fine abrasive grains. Finishing equipment. 9. A plurality of linear elastic members radially provided on a rotating shaft portion, and coarse abrasive grains having a coarse grain size and finishing abrasive grains having a fine grain size, which are fixed to the tips of the linear elastic members. A cylindrical inner surface finishing device provided with a spherical abrasive grain formed with. 10. A plurality of linear elastic members radially provided on a rotating shaft portion, and a plurality of rod-shaped grindstones fixed to the tip of the linear elastic members and formed in a rod shape. Cylinder inner surface finishing device. 11. A plurality of linear elastic members radially provided on a rotating shaft portion, coarse abrasive grains having a coarse grain size and finishing abrasive grains having a fine grain size, which are fixed to the tips of the linear elastic members. A cylindrical inner surface finishing device having a rod-shaped grindstone formed by having. 12. A horn finishing grindstone in the form of a rod that is pressed against the inner surface of a cylindrical hole provided in a workpiece, and a pressure adjusting device that supports the horn finishing grindstone against the inner surface of the cylindrical hole in a freely pressable manner. In a cylindrical inner surface finishing device in which a grindstone is rotatably formed, rough abrasive grains having a coarse grain size are provided on a workpiece side of the horn finishing grindstone, and finish grain grains having a fine grain size are provided on a non-workpiece side. Cylinder inner surface finishing device. 13. A horn finishing tool having a rod-shaped horn finishing grindstone pressed against the inner surface of a cylindrical hole provided in a workpiece and a pressure adjusting device for supporting the horn finishing grindstone against the inner surface of the cylindrical hole. A first finishing device in which a grindstone is rotatably formed, and a shaft portion coaxial with the first finishing device is provided at a tip end of the first finishing device on the workpiece side, and the shaft portion is radially projected. In a cylindrical inner surface finishing device including a plurality of linear elastic members and a second finishing device having spherical abrasive grains fixed to the tip thereof, the diameter of the second finishing device is set to the first
The cylindrical inner surface finishing device is formed to have a diameter larger than that of the finishing device. 14. A cylindrical bag-shaped elastic member formed so as to expand and contract by wrapping a rotated shaft portion with abrasive grains fixed to the outer peripheral surface thereof, and supplying a pressure fluid to the cylindrical bag-shaped elastic member. A cylindrical inner surface finishing device comprising a pressure supply / discharge device for discharging and expanding or contracting the cylindrical bag-shaped elastic member, and guide rings provided on both axial sides of the cylindrical bag-shaped elastic member. 15. A first guide ring rotatably supported at an end of a shaft to be rotated on a workpiece side, and the shaft section spaced from the first guide ring on the side opposite to the workpiece. A second guide ring rotatably supported on the shaft, a third guide ring rotatably supported on the shaft portion at a distance from the second guide ring on the side opposite to the workpiece, and the first guide ring. A plurality of rigid first linear elastic members radially provided on the shaft portion between the ring and the second guide ring, and fixed to the tip portion of the first linear elastic member. A first finishing device having spherical rough abrasive grains formed of coarse abrasive grains, and a plurality of radially protruding projections provided on the shaft portion between the second guide ring and the third guide ring. A second linear elastic member having flexibility and a spherical shape formed by fine abrasive grains fixed to the tip of the second linear elastic member. A cylindrical inner surface finishing device having a finishing abrasive and a second finishing device formed to have a larger outer diameter than the first finishing device. 16. A first gear, which is pivotally supported by a first shaft portion that is directly connected to a rotation device and is rotated, and parallel to the first shaft portion so as to mesh with the first gear. A second gear that is rotatably supported by a second shaft portion that is disposed, and around the first gear and the second gear that mesh with the first gear and the second gear, respectively. The third is arranged a plurality of
Third gear supported axially by the shaft portion, a plurality of linear elastic members radially projecting from the third shaft portion, and a spherical grind fixed to the tip of the linear elastic member. Cylindrical inner surface finishing device with granules. 17. A first gear that is pivotally supported by a first shaft portion that is directly connected to a rotation device and is rotated, and a plurality of gears around the first gear that mesh with the first gear. A second gear that is axially supported by a second shaft portion that is arranged parallel to the location;
A rough finishing device having a plurality of linear elastic members radially provided on one of the second shaft portions and spherical abrasive grains having a coarse grain size fixed to a tip end portion of the linear elastic members. And a rough finishing device which is provided on the second shaft portion so as to be adjacent to the rough finishing device and which is provided with spherical abrasive grains having a finer grain size than the spherical abrasive grains of the rough finishing device, and the rough finishing device. A medium finishing device provided with the second shaft portion so as to be adjacent to the rough finishing device, and having a grain size smaller than that of the spherical abrasive grains, and a grain size of the spherical abrasive grains of the medium finishing device. A cylindrical inner surface finishing device comprising a fine finishing spherical abrasive grain and a final finishing device provided on the second shaft portion so as to be adjacent to the intermediate finishing device. 18. A diametrical dimension formed by a plurality of linear elastic members radially provided on a rotating shaft portion and spherical abrasive grains fixed to the tip of the linear elastic member, the diameter dimension of the spherical abrasive grains being processed. In a cylindrical inner surface finishing method using a cylindrical inner surface finishing device formed to be smaller than the inner diameter of the cylindrical hole of the object, the cylindrical inner surface finishing device is inserted into the cylindrical hole to make contact with the inner surface of the cylindrical hole, and the linear elasticity The shaft is moved so that the member bends, the cylindrical inner surface finishing device is rotated, and the inner surface of the cylindrical hole is finished by reciprocating in the axial direction, as well.
Further, by circularly moving the shaft portion with respect to the axis of the cylindrical hole, the entire inner surface of the cylindrical hole is finished so that the amount of bending of the linear elastic member is reduced stepwise or continuously. A method for finishing an inner surface of a cylinder, wherein the shaft portion is moved.