JP2609988B2 - Honing jig and automatic honing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF relates Beauty <br/> automatic honing system This invention Oyo honing tool, more particularly, swingably holding the workpiece by a simple and lightweight floating structure to a three-dimensional direction In addition, the present invention relates to a technology that enables quick and accurate automatic honing.

[0002]

2. Description of the Related Art Honing is one of the processing methods for finishing a radial surface of a workpiece (hereinafter referred to as a work), for example, an inner diameter surface of the work to a mirror surface. In the honing process, the honing tool and the work are placed in a relatively floating state, and the honing tool is rotated and reciprocated, and the honing tool is expanded with a wedge or cone to finish the inner surface of the work precisely. Do.

By the way, as a method of keeping the honing grindstone and the work relatively floating, only one of the honing grindstone side and the work side is generally floated, and the former has a large size. The latter is employed when machining a heavy work, and the latter is employed when machining a light work with small dimensions.

As a honing jig for holding a workpiece in a floating state, various types of honing jigs have conventionally been developed.
One example is shown in FIG. 13 (see Japanese Utility Model Publication No. 55-41465).

[0005] The honing jig is a transfer machine.
Installation type placed at the position corresponding to the honing machine of the device
On the transfer path of the transfer machine
An intermediate support b is supported on a fixedly disposed jig base a via bearings c and c so as to be swingable about the Y-Y axis, and a workpiece W is clamped on the intermediate support. The oscillating body d is XX through the X-cross pin e.
It is supported so as to be able to swing around the axis, whereby the swinging body d is swingable in a three-dimensional direction.

The swinging member d is provided with a pair of upper and lower clamp claws f and g for clamping the work W, and a driving means (not shown) using hydraulic pressure or the like for raising and lowering the lower clamp claw g. ing. h denotes a loading arm for adjusting the position of the work W, and i denotes a conveyor belt for conveying the work W.

[0007] The work W is provided on the conveyor belt.
i along the transport route, and
Stopped at the position of the honing jig arranged inside,
It is clamped and supported by this honing jig. In other words, this
The work W is placed on the lower clamp claw g, and when the positioning thereof is performed by the loading arm h, the lower clamp claw g is raised by the driving means, and the work W is connected to the upper clamp claw f. After that, the machining hole j of the workpiece W is subjected to honing from below by a honing tool k.

[0008]

However, such a structure has the following problems. (1) Since the driving means of the lower clamp claw g uses a hydraulic pressure or the like as described above, a hydraulic cylinder as an actuator and its hydraulic piping are required. Therefore, the honing jig itself and its peripheral devices tend to be large and complicated, and their weight tends to be excessively large as compared with the work W.

In particular, an increase in the weight of the oscillating body d causes a decrease in the followability of the work W to the honing tool k and, consequently, a reduction in machining accuracy. This tendency becomes more remarkable as the weight of the work W decreases. .

(2) Since a hydraulic pipe is required, a rotary joint or the like is indispensable for a relatively movable part, so that the processing of the pipe is difficult, and the driving means itself becomes complicated.

(3) The swing around the XX axis is due to the X-cross pin e support (sliding support), while the swing around the YY axis is the bearings c and c support (rolling support). The rotation resistance of the two supporting portions is larger in the former case. This causes a difference in the oscillating properties of the oscillating body d about the XX axis and the YY axis, and further, the followability of the work W clamped by the oscillating body d to the honing tool, which also lowers the processing accuracy. Will be invited.

(4) Further, such a structure cannot be used in a honing jig of a type for transferring a honing jig, that is, a transfer type honing machine. That is, as described above, this honing jig
Is conveyed along with the work W by the conveyor belt i.
Not the type, but on the conveyor route of this conveyor belt i
At a position corresponding to each honing machine.
It is of the installation type to be installed. Because of this,
The honing jig is a transfer-type honing machine
Could not be used.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a honing jig which is small in size and weight and has a simple structure and which can be applied to a transfer type honing machine. An object of the present invention is to provide an automatic honing system capable of performing automatic honing processing with high accuracy.

[0014]

In order to achieve the above object, the honing jig of the present invention is designed to hold a workpiece.
In addition, the work is controlled by the work transfer section of the automatic honing system
A jig base , which is conveyed integrally with the crop and is movably mounted on a conveying path of the work conveying section, and an oscillating body provided on the jig base so as to be swingable in three dimensions. If, removably attached to the swing body, workpiece
And a work holder for detachably holding the work holder.

Further, the automatic honing system of the present invention is applicable to the honing jig, and is provided in a loop or linear shape.
A work transfer unit having a work transfer device for transferring, at least one honing machine disposed at an intermediate position of the work transfer unit and performing honing processing on a workpiece transferred by the work transfer device; and At least one measuring device that is arranged in the middle of the section and measures the processing diameter of the workpiece, and a control device that automatically controls the work transfer device, the honing machine, and the measuring device in conjunction with each other is provided. It is characterized by the following.

[0016]

In the automatic honing system using the honing jig of the present invention, first, a work is manually set on a work holder of the honing jig, and then the work holder is mounted on an oscillator provided on a jig base. , The work is held in a three-dimensionally swingable manner by the floating structure of the honing jig.

When the honing jig on which the work is mounted in this manner is placed on the transfer path at the transfer position of the work transfer section of the automatic honing system, the control device automatically performs a predetermined honing process in the following order, for example. Done in

The honing jig is automatically conveyed to the honing position by the work conveying device, and then positioned and subjected to predetermined honing processing by a honing machine. Subsequently, the workpiece is again automatically transferred to the measurement position by the work transfer device, is positioned, and the measurement of the work processing diameter is performed by the measurement device. This measurement result is used to determine the quality of the work, and is fed back to the control unit of the honing machine to control the next honing operation.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG. 1 shows an automatic honing system according to the present invention. The system includes a work transfer section 1, a roughing honing machine 2, a rough machining measuring device 3, a finishing honing machine 4, a finishing machine. The processing measurement device 5 and the control device 6 are configured as main components. Hereinafter, each component device will be described in detail.

A. Work transfer unit 1: Work transfer unit 1
The honing jig 10 for holding the work W is transported according to a series of honing steps.
, A work transfer device 12 that transfers the honing jig 10 along the transfer path 11.
And so on as main parts.

As shown in FIG. 1, the transport path 11 starts from a workpiece mounting / detaching position A, and then proceeds to a roughing honing machine 2, a rough working measuring device 3, a finishing honing machine 4, and a finishing machine. After returning to the work attaching / detaching position A after passing through the measuring device 5, it is formed in a rectangular loop shape.

As shown in FIG. 2, the transport path 11 is in the form of a guide rail having a guide groove 11a for guiding the honing jig 10, and each of the honing machines 2,
As will be described later, positioning devices 13 for positioning the honing jig 10 are provided on the side walls 11b, 11b at the processing position 4 and the measurement positions of the measuring devices 3, 5, respectively.

The workpiece transfer device 12, as the arrow (1), loading device 12a for conveying the honing jig 10 from the mounting and dismounting position A to the inlet B ₁ honing section, arrow (2)
As of the transfer device 12 for conveying the honing jig 10 from the inlet B ₁ of honing portion to the outlet B ₂
b, as the arrow (3), as from the outlet B ₂ out device 12c for conveying to return the position C, arrow (4), the feedback position C
And a push-in device 12e that pushes from the push-in position D to the attachment / detachment position A. These devices 12a to 12e
Are all composed of hydraulic cylinders.

The transfer device 12b includes a plurality of (four in the illustrated example) honing jigs 10, 10,..., A roughing honing machine 2, a rough working measuring device 3, a finishing honing machine 4, and a finishing machine. Drive control is performed so that tact feeding is sequentially and continuously performed to the processing measuring device 5, and the other devices 12 a to 12 e are drive controlled so as to transport each honing jig 10 one by one.

When the distance from the return position C to the attachment / detachment position A is short, the pressing device 12e is omitted and the honing jig 10 is transported to the attachment / detachment position A by the return device 12d. Is also good. Further, each of the constituent devices 12a to 12e of the work transfer device 12 may be configured by an air cylinder instead of the above-described hydraulic cylinder.

B. Honing jig 10: The honing jig 10 holds the work W,
The workpiece W is transported integrally with the workpiece W by the workpiece transport unit 1
As shown in FIG. 2 to FIG. 5, a jig base 20, an oscillating body 21, and a work holder 22 are mainly used.

The jig base 20 has a substantially square planar shape as shown in FIG.
It is movably mounted on the top. Locking recesses (locking portions) 20a to 20d are respectively provided at the center portions of the sides of the jig base 20, and a pair of opposing locking recesses 20a and 20d are provided.
b or 20c, 20d resiliently engages with the positioning device 13 of the work transfer unit 1 described above.

That is, as shown in FIG. 2, the positioning device 13 is in the form of a ball plunger comprising a locking ball 13a and a resilient spring 13b. At the measurement positions of the devices 3 and 5, a pair of left and right sides are provided on both side walls 11b and 11b of the guide rail 11 of the work transfer section 1 so as to face each other.
Then, the locking balls 13a, 13a of the respective positioning devices 13, 13 are fitted to the locking recesses 20 of the jig base 20.
a, 20b or 20c, 20d.
The honing jig 10 is positioned.

The oscillating body 21 is provided on the jig base 20 so as to be able to oscillate in a three-dimensional direction, and includes a first oscillating member 25 and a second oscillating member 26.

The first swinging member 25 is swingably provided on the support columns 23, 23 of the jig base 20 via X-cross pins 27, 27, and is provided inside the first swinging member 25. The second swing member 26 is swingably provided through Y-cross pins 28, 28 orthogonal to the X-cross pin 27. As a result, the second swing member 26
-Movement of the cross pins 27, 27 (rotation about the XX axis)
In addition, movement of the Y-cross pins 28, 28 (rotation about the Y-Y axis) is added to the three-dimensionally swingable pins.

As shown in FIG. 4, the X-cross pin 27 has its base end fixed to the first swinging member 25 and its tip end allowed to move in the axial direction. Support column 23 via a radial bearing 29
Each is pivotally supported. On the other hand, as shown in FIG. 5, the Y-cross pin 28 has a proximal end attached to and fixed to the first swing member 25 and a distal end having a radial bearing allowing movement in the axial direction. Via 30
Each of the second swing members 26 is pivotally supported.

The mounting structure of the X-cross pins 27 and the Y-cross pins 28 may be reversed from that shown in the figure. That is, in FIGS. 4 and 5, one end of each of the X-cross pin 27 and the Y-cross pin 28 is fixed to the support column 23 and the second swinging member 26, and the other ends are respectively radial bearings 29 and 28. The first swinging member 25 may be pivotally supported via 30.

Thus, in addition to the above-described swing in the three-dimensional direction, the second swing member 26 can
7 and Y-cross pin 28 in the axial direction, that is, XX
Horizontal movement is also possible in each of the axial direction and the YY axis direction. In addition, such radial bearings 29, 30
The movement of the second swinging member 26 and the work holder 22 attached thereto becomes lighter,
Oscillation (rotational resistance) around the XX axis and around the YY axis becomes substantially uniform. As a result, as described later, good and uniform followability to the honing tool is ensured, and a difference in processing accuracy is prevented, and high-accuracy honing can be ensured.

As the radial bearings 29 and 30, bushes (including oil-impregnated bearings or Teflon-coated bushes) are used in the illustrated example.
A bearing structure such as a ball bearing that ensures smooth movement may be employed.

In FIGS. 3 and 4, reference numeral 31 denotes an adjusting screw for adjusting the amount of swing of the first swing member 25; 32, an adjusting screw for adjusting the amount of swing of the second swing member 26;
Reference numeral 33 denotes an adjusting screw for adjusting the horizontal movement amount of the second swing member 26, respectively. Although not shown, an adjustment screw for adjusting the horizontal movement amount of the first swinging member 25 is also provided on the support columns 23 and 23 in parallel with the axis of the X-cross pin 27.

The work holder 22 allows the work W to be removed.
The ability and those are integrally incorporated, the oscillator 2
The first swing member 26 is detachably attached and fixed to the first second swing member 26. The work holder 22 includes a work fixing part 35 and a mounting part 36 for attaching the work fixing part 35 to the second swing member 26.

The work fixing portion 35 is for locking and fixing the work W in a detachable manner, and includes a fixing portion main body 37 and a pair of work fixing members 38, 38 provided on the fixing portion main body 37.
It is composed of

The fixing portion main body 37 has a holding hole 39 penetrating in the vertical direction at the center thereof, and the work W is inserted into the holding hole 39 from below. In this connection, the lower edge 39a of the holding hole 39 is formed as a locking shoulder for locking the step portion 40 of the work W from below, as shown in FIGS. A locking pin 42 inserted and locked into the flange hole 41 of the work W is attached and fixed downward.

The pair of left and right work fixing members 38, 38
As shown in FIG. 6, the work W is engaged with and fixed to the fixing portion main body 37 so as to be detachable, and is pivotally supported at the center in the vertical direction of the fixing portion main body 37 via support shafts 43 and 43, respectively. As a result, it can be opened and closed in the horizontal direction.

The inner peripheral surface 38a of the work fixing member 38 is formed in a cylindrical surface to form a part of the holding hole 39, and the lower end of the inner peripheral surface 38a has a locking flange 44.
Is provided. Then, the work fixing members 38, 38
In the closed state, while holding the outer peripheral portion of the work W in a holding state from both sides, the locking flange 44 engages with the annular groove (outer peripheral step portion) 45 of the work W, and It is integrally fixed to the fixing portion main body 37.

The work fixing members 38, 38
In the closed state, the distal end portions 38b, 38b can be fixed to each other by the fixing plate 46. As shown in FIGS. 6 (a) and 6 (b), the fixing plate 46 has a base end 46a rotatably supported by a support pin 38c of one of the work fixing members 38, and has a front end 46a. The locking groove 46b can be engaged with a fixing pin 38d of the other work fixing member 38.

The mounting portion 36 is for fixing the work fixing portion 35 to the second swinging member 26 in a suspended manner and detachably, and is formed in a planar shape as shown in FIG. . At the center of the mounting portion 36, an insertion hole 36a for inserting the work W is provided, and an outer peripheral portion 36b of the insertion hole 36a is fixed to fixing bolts 50, 50,.
As a result, it is integrally attached and fixed to the upper end surface of the work fixing portion 35.

At both ends of the mounting portion 36, locking recesses 36c, 36c are provided, respectively. The locking recesses 36c, 36c are fixed to the fixing bolts 51, 51 can be engaged.

The mounting portion 36 and the work fixing portion 35
The fixing portion main body 37 may be formed as an integral body, and in this case, the fixing bolts 50, 50,.

Thus, the workpiece W is transferred to the honing jig 10
To attach it to the box, perform the following steps manually (see Fig. 7)

The work W is integrally attached to the work fixing portion 35 of the work holder 22. In this case, first, with the work fixing members 38, 38 opened to both sides (see the two-dot chain line in FIG. 6), the work W is held in the holding hole 39 of the fixing portion main body 37.
The work W is positioned in the holding hole 39 by inserting the flange hole 41 of the work W into the locking pin 42 while inserting the work W from below.

In this state, the work fixing members 38, 3
After closing the work 8 and holding the work W in a holding manner from both sides and integrally fixing the work W to the fixing portion main body 37, the fixing plate 46 is rotated (in the direction of the arrow in FIG. 6B), and The stop groove 46b is engaged with the fixing pin 38d, and the work fixing members 38 are closed and fixed.

The work holder 22 to which the work W is attached is mounted on the second swing member 26 of the swing body 21 from above.

In this case, first, the locking step of the mounting portion 36 of the work holder 22 is fitted and locked to the upper end of the inner diameter of the second swinging member 26 (see the two-dot chain line in FIG. 7). Subsequently, as shown in FIG. 8, the mounting portion 36 is rotated clockwise, and the locking recesses 36c, 36c are fitted and locked to the fixing bolts 51, 51 of the second swing member 26, respectively. Holder 2
2 is attached and fixed inside the second swinging member 26 in a suspended manner.

C. Honing machines 2,4: The honing machines 2,4 are specifically of a vertical type as shown in FIG.
A rotating spindle 61 provided with a honing tool 60 at the tip, a spindle rotating drive section (spindle rotating means) 62, a spindle reciprocating drive section (spindle reciprocating means) 63, a grindstone driving section (grindstone driving means) 6
4 and a control section (control means) 65 as main parts. Reference numeral 66 denotes a power supply.

The honing tool (so-called honing mandrel or honing head) 60 is provided with a rotating spindle 6.
A plurality of honing grindstones 70, 70,..., Which are exchangeably mounted at the tip end, that is, the lower end thereof, and which are radially expandable / contractible,
00 (see FIG. 11) and the honing stones 70, 70,
, Etc., are returned.
The honing grindstones 70, 70,... Are expanded with the downward movement of the cone rod 100.
With the upward movement of the cone rod 100, the retracting operation is performed by the return spring.

It should be noted that the expanding operation of the cone rod 100 is reversed from that shown in FIG.
, The honing grindstones 70, 70,... Perform the expanding operation with the upward movement of the cone rod 100, and the honing grindstones 70, 70,. Good.

The rotating main shaft 61 has a honing tool 60 at its lower end, a driving shaft 71 and a driving motor 7.
2 and the like, and the main body rotation drive section 62 and the slide body 7
3, the main shaft reciprocating drive unit 63 including the hydraulic cylinder 74, etc.
And each is linked.

That is, the rotating main shaft 61 is connected to the slide body 7.
3 and rotatably supported by the slide body 73.
Is provided on a vertically extending guide rod 76 on the body 75 so as to be able to move up and down, and is connected to a piston rod 74 a of a hydraulic cylinder 74 attached to the body 75. When the piston rod 74a of the hydraulic cylinder 74 moves up and down, the slide body 7
3, the rotary spindle 61, ie, the honing tool 6
0 will be moved up and down.

The upper end of the rotating main shaft 61 is
Keyed or spline-fitted to a drive shaft 71 rotatably provided on the head portion 75a of the drive shaft 71a.
Are connected to each other so as to be relatively movable in the vertical direction (axial direction) and to be integrally rotatable.

A transmission pulley 77a is provided at the upper end of the drive shaft 71.
The transmission pulley 77a is connected via a transmission belt 78 to a transmission pulley 77b attached to the motor shaft of the drive motor 72. Then, by the rotational driving of the driving motor 72, the rotating main shaft 61, that is, the honing tool 60 is rotationally driven via the driving shaft 71.

The grindstone driving unit 64 is provided with the honing grindstone 7.
., And a cutting drive mechanism 79 for vertically moving the cone rod 100 of the honing tool 60.
And a servo motor 80 as a driving source.

The cutting drive mechanism 79 has a conventionally well-known structure.
Rotation transmission mechanism 8 provided on head portion 75a of body 75
1 is connected to the motor shaft of the servomotor 80. The cutting drive mechanism 79 is driven by the rotation of the servo motor 80 in the forward direction, and the cone rod 100 in the honing tool 60 is driven.
Move downward, and the honing stones 70 are extended. On the other hand, the cone rod 100 is moved upward by the rotational drive of the servo motor 80 in the reverse direction,
The honing stones 70, 70,...
The retracting operation (returning operation) is performed by the return spring inside.

As the servomotor 80 for controlling the amount of expansion and contraction of the honing grindstones 70, 70,..., Specifically, a stepping motor is used, and the amount of rotation is determined by a position detector 82 such as a rotary encoder. Is detected.

The control unit 65 automatically controls the operation of each drive unit of the honing boards 2 and 4 in conjunction with each other, and more specifically, a micro-computer comprising a CPU, a ROM, a RAM and an I / O port. It consists of a computer. .

A machining program for executing the honing machining is incorporated in the control unit 65.
As shown in FIG. 10, a main control unit 65 a, a main spindle rotation control unit 65 b for controlling the main spindle rotation drive unit 62, a main spindle reciprocation control unit 65 c for controlling the main spindle reciprocation drive unit 63, and a grindstone control for controlling the grindstone drive unit 64. It is composed of a part 65d and the like. .

The main control section 65a includes driving sections 62, 6
Various information necessary for driving the 3, 64, such as the rotation speed, the elevating speed, the cutting speed, and the operation timing of the honing tool 60 (arbitrary function waveform signal such as a sin function), or the honing grindstones 70, 70,. The reference positions (stroke positions) A and B (see FIG. 11) and the stroke width S (see FIG. 11) are input and set appropriately as NC (numerical control) data in advance or as appropriate using a keyboard or the like. Each of the control units 6 according to the data
5b to 65d are controlled. .

Each of the control units 65b to 65d includes:
Drive motor 72, hydraulic control valve 74 of hydraulic cylinder 74
b, in addition to the servomotor 80 and the position detector 82, a position detector 84 for detecting the position of the slide body 73 from a scale 83 provided on the slide body 73, and other driving units are electrically connected. The actual value information obtained therefrom is compared with the various set values set in advance by the main control unit 65a, and the operation of each of the drive units 62 to 64 is drive-controlled based on the calculation result. .

The honing machines 2 and 4 configured as described above are arranged in the middle of the work transporting section 1 and their driving sections 62, 63 and 64 are controlled by the control section 65 as described below. The honing process is performed on the work W conveyed by the work conveyance device 12 and is automatically controlled in relation to each other.

First, the honing grindstones 70, 70,... Of the honing tool 60 are processed by the main spindle reciprocating drive 63 at the processing lowermost position B (see FIG.
(The position indicated by the two-dot chain line), and then the spindle rotation drive unit 6
2 gives the honing tool 60 a rotational movement.

Subsequently, while the rotary motion and the reciprocating motion (elevation stroke S) are given to the honing tool 60 by the spindle rotating drive unit 62 and the spindle reciprocating drive unit 63, the honing grindstones 70 and 7 are controlled by the grindstone drive unit 64.
A certain cut (expansion) is given to 0,..., And the entire processing area of the hole Wa to be processed is honed.

When the honing with the set cutting depth is completed, the honing grindstones 70, 70,...
Rises again and returns to the initial position.

In the above process, first, while the honing tool 60 is given a rotational motion by the main spindle rotation driving unit 62, the honing grindstones 70, 70,. The lowermost position B of the hole W with respect to the hole Wa to be machined (FIG. 11)
The position may be lowered to the position indicated by the two-dot chain line).

D. Measuring devices 3 and 5: The measuring devices 3 and 5 measure the processing diameter of the inner surface Wa of the work W, and specifically include an air micrometer. The measurement head 90 of the air micrometer is shown in FIG. Spindle 9 as shown
The main shaft 91 is reciprocally movable in the axial direction of the work hole Wa of the workpiece W, that is, in the vertical direction.

The measuring head 90 has a cylindrical shape having an outer diameter smaller than the inner diameter of the hole Wa to be processed of the work W, and has air nozzles 90a, 90a for injecting measuring air on its outer peripheral surface. It is provided radially outward.

When the measuring head 90 is inserted into the hole Wa to be processed of the work W, the air nozzle 9
0a, 90a, the measurement air is injected, and the processing hole Wa
The inner diameter of the hole Wa to be processed is measured from the pressure change of the measurement air due to the gap between the inner diameter of the hole and the outer peripheral surface of the measuring head 90.

In the case of the illustrated example, the inner diameter measured by the air micrometer is, as shown in FIG. 12, four (d ₁ to d ₄ ) in the axial direction of the hole Wa to be machined.
These four measured values d _{1 to} d ₄ are sent to an arithmetic control unit of an air micrometer (not shown) to compare and calculate the inner diameter shape mode of the hole Wa to be machined of the work W.

The result of this calculation is fed back to the control unit 65 of the honing machine 2 for rough machining in the case of the measuring device 3 for rough machining, and rough honing is performed based on the feedback. Or, in addition to this feedback,
The result of the above calculation is the control unit 6 of the honing machine 4 for finishing.
5, the stroke position A, B, the stroke width S, or the amount of expansion of the grindstones 70, 70,... In the finishing honing is controlled based on the hole diameter and cylindricity during roughing. , More precise processing is performed.

On the other hand, in the case of the measuring device 5 for finishing,
The calculation result is fed back to the control unit 65 of the honing machine 4 for finishing work, similarly to the measuring device 3 for rough working, and the finishing honing work is performed based on the feedback, and the work is placed at the work attaching / detaching position A. It is also sent to the display lamp device 95, and the processing result of the work W (OK display for non-defective products, NG display for defective products) is lit and displayed. The display timing in this case is when the measured work W reaches the attachment / detachment position A, and the operator selects the work W by looking at the display.

For example, if the measured inner diameter shape mode has a high cylindricity (a cylindrical surface having a uniform inner diameter surface shape of the hole to be processed Wa), a uniform honing over the entire honing area (that is, the stroke width S) is performed. Is performed, while
If there is a non-uniform portion on the inner diameter surface of the hole Wa to be machined, first, honing with a short stroke width is performed locally only on the non-uniform portion, and then uniform honing over the entire honing region is performed.

The measuring head 9 of the measuring devices 3 and 5
0 may be driven so as to rotate in addition to reciprocating movement in the vertical direction, and the roundness of the hole Wa to be processed may be measured. Although not shown, roughing honing 2 of the front station, for example to the inlet B ₁ of honing portion measuring device for measuring the prepared hole of the workpiece W is provided, based on the measurement result, roughing honing Board 2
May be configured to control the amount of grinding wheel expansion.

E. Control device 6: The control device 6 automatically controls the work transfer device 1 and each of the devices 2 to 5 arranged in the middle of the transfer path in conjunction with each other, and specifically includes a CPU, a ROM, and a RAM. And a microcomputer including an I / O port and the like. .

The control unit 6 controls the time from when the honing jig 10 is loaded and mounted at the work mounting / dismounting position A of the work transfer unit 1 to when the honing jig 10 returns to the work mounting / demounting position A again through a predetermined honing process or the like. A series of process programs are incorporated, and specifically, the operation timing of each of the devices 1 to 5 is input and set as NC data in advance or appropriately by a keyboard, and according to the data, each of the devices 1 to 5 is set. 5 is sequenced. .

Next, honing processing using the automatic honing system configured as described above will be described. .

I. Take work W into honing jig 10
Attaching and loading: The work W is manually attached to the honing jig 10 according to the procedures and procedures described above (incorporation).

That is, first, the work W is manually set on the work holder 22 of the honing jig 10 and then the work holder 22 is placed in the mounting / removing position A of the honing system.
Attach to the rocking body 21 on the jig base 20 waiting in the above-described manner. As a result, the workpiece W is held swingably in the three-dimensional direction by the floating structure of the honing jig 10.

The jig base 20 and the oscillating body 21 are always mounted on the guide rail 11 of the work transfer section 1 as a unit that can be separated from the work holder 22. .

II. Automatic Honing of Work W: After the work W is carried into the honing jig 10 at the attaching / detaching position A as described above, when the start button (not shown) is pressed, the control device 6
Thereby, the automatic honing of the workpiece W is performed in the following order. .

I) The carry-in device 12a operates and the work W
Honing jig 10 holding a (hereinafter workpiece W) is transported to the entrance B ₁ honing portion is carried into the processing line. .

Ii) The work W located at the entrance B ₁ is transferred to the roughing honing machine 2 by the transfer device 12b.
The roughing measuring device 3 → the finishing honing machine 4 → the finishing processing measuring device 5 is tact-fed and the position of each device is determined by the positioning device 13.
Predetermined steps are sequentially executed. .

That is, after rough honing of the work W is performed by the rough honing machine 2, the rough processing measuring device 3 measures the processing state of the hole Wa to be processed of the work W, and the measurement result is rough. It feeds back to the honing machine 2 for processing or feeds forward to the honing machine 4 for finishing. .

Subsequently, after the finish honing operation on the workpiece W is performed by the finishing honing machine 4, the finishing processing measuring device 5 sets the work hole Wa on the workpiece W.
Is measured, and the measurement result is fed back to the finishing honing machine 4 and sent to the display lamp device 95 as described above to be used for the quality judgment of the work W. .

Iii) Exit B ₂ after a series of honing operations
The work W conveyed to is returned to the return position C by the unloading device 12c, and is unloaded from the processing line. iv)
Further, after the work W is transported to the pushing position D by the return device 12d, it is pushed into the attaching / detaching position A by the pushing device 12e. .

III. Removal of work W and honing jig 1
Removal from No. 0: After taking out the work holder 22 from the honing jig 10 transported to the attachment / detachment position A to the outside of the system in the reverse procedure and procedure as described above, the work W is taken out from the work holder 22 by hand. This work W
Display of display lamp device 95 (OK display or NG display)
Sort according to. .

In the automatic honing system configured as described above, the work from the loading of the work W to the unloading after the completion of the honing processing is automatically performed, thereby saving labor in the honing processing. .

In addition, when honing with the honing machine 2 for roughing and the honing machine 4 for finishing, the work W is held by the honing jig 10 so as to be swingable in three dimensions and is in a floating state. W maintains good followability of the honing machines 2 and 4 with respect to the honing tool 60, and ensures high machining accuracy. That is, even if the accurate centering and parallel state between the outer diameter of the work W and the hole Wa to be machined are not ensured, the movement of the rocking body 21, particularly the second rocking member 26, in the three-dimensional direction causes these movements. The deviation is absorbed to achieve precise honing. .

The above-described embodiment merely shows a preferred embodiment of the present invention, and the present invention is not limited to this and can be variously modified. .

For example, in the illustrated example, the work transfer section 1
Is formed in a loop shape, and the honing jig 10 is returned from the mounting / dismounting position A to the mounting / dismounting position A again. However, the honing jig 10 may be provided in a straight line and continue to the next process. It is. .

In the illustrated example, the measuring devices 3 and 5
Is arranged in a station independent of the honing machines 2 and 4, but may be arranged integrally with the honing machines 2 and 4 (including the case where they are in the same station) so that measurement is performed in-process. . .

Further, the specific structure of each device constituting the honing system can be changed without being limited to the illustrated example. .

[0097]

As described in detail above, the honing jig according to the present invention comprises a jig base movably mounted on a transfer path of a work transfer section of an automatic honing system, and a three-dimensional base mounted on the jig base. A swinging body provided to be swingable in a direction,
It is equipped with a work holder detachably attached to this rocking body, and does not have any power mechanism or drive source such as a hydraulic cylinder as in the past. Is possible. .

Therefore, even if the work is relatively light and small in size, the weight of the honing jig itself does not become excessively large as compared with the work, and the work follows the honing tool with good and high performance. Processing accuracy can be ensured. .

Furthermore, since the structure for manually attaching and detaching the work has a very simple structure with no extra or unnecessary accessories, the unit cost of the honing itself is low. This is advantageous for a transfer-type honing machine that automatically transfers jigs. .

Further, according to the automatic honing system of the present invention, the work transfer unit, the honing machine and the measuring device are automatically controlled in conjunction with each other by the control device. Unloading after processing is completed is performed automatically, so that honing processing can be labor-saving. Further, by employing the honing jig of the present invention, simplification and high accuracy of the entire system can be realized.

[Brief description of the drawings]

FIG. 1 is a plan view showing a schematic configuration of an automatic honing system according to an embodiment of the present invention.

FIG. 2 is a plan view showing a honing jig used in the automatic honing system.

FIG. 3 is a front view showing the honing jig in a partial cross section.

FIG. 4 is a longitudinal sectional view showing the honing jig along a line IV-IV in FIG. 2;

FIG. 5 is a longitudinal sectional view showing the honing jig along a line VV in FIG. 2;

FIG. 6 is a view showing a work holder of the honing jig.
FIG. 6A is a plan sectional view taken along the line VI-VI in FIG. 3, and FIG. 6B is a front view.

FIG. 7 is an exploded vertical sectional view for explaining a work mounting procedure of the honing jig.

FIG. 8 is a plan view for explaining a fitting and locking procedure of a mounting portion of the honing jig.

FIG. 9 is a schematic configuration diagram showing a honing machine of the automatic honing system in a partial cross section.

FIG. 10 is a block diagram showing a configuration of a control unit of the honing machine.

FIG. 11 is a longitudinal sectional view for explaining an operation of a honing tool of the honing machine.

FIG. 12 is a longitudinal sectional view showing a main part of a measuring device of the automatic honing system.

FIG. 13 is a view showing a conventional honing jig;
FIG. 13A is a plan view showing a part in section, and FIG. 13B is a longitudinal sectional view.

[Explanation of symbols]

 W Work 1 Work transfer unit 2 Roughing honing machine 3 Roughing measurement device 4 Finishing honing machine 5 Finishing measurement device 6 Control device 10 Honing jig 11 Transfer path 12 Work transfer device 13 Positioning device 12a Loading device 12b Transfer device 12c Unloading device 12d Return device 20 Jig base 21 Oscillator 22 Work holder 25 First oscillating member 26 Second oscillating member 27 X-cross pin 28 Y-cross pin 35 Work fixing part 38 Work fixing member 39 Holding hole 44 Locking flange (Work locking portion) 60 Honing tool 61 Rotating spindle 62 Spindle rotation drive (Spindle rotation means) 63 Spindle reciprocating drive (Spindle reciprocation means) 64 Grinding stone drive (Grinding stone driving means) 65 Control unit (Control) Means) 70 Honing whetstone 95 Indicator lamp device

Claims (12)

(57) [Claims] 1. An automatic horn for holding a workpiece.
The workpiece is transported integrally with the workpiece by the workpiece transport section of the
Be one that is, this and the jig base movably mounted on the transport path of the workpiece transfer unit, and the swinging body is provided swingably to the fixture base to the three-dimensional direction, the rocking body Detachably attached to the
Honing jig characterized by comprising a workpiece holder for enabling holding and. 2. The oscillating body comprises a first oscillating member and a second oscillating member, and the first oscillating member is capable of oscillating on the jig base via an X-cross pin. The second swing member is provided so as to be movable in the axial direction of the X-cross pin.
The honing jig according to claim 1, wherein the honing jig is provided so as to be able to swing inside the first swing member and to be movable in the axial direction of the Y-cross pin via a cross pin. 3. The work holder comprises: a work fixing portion for engaging and disengaging a work; and a mounting portion fixedly and removably mounted to a second swing member of the oscillator. The honing jig according to claim 2, comprising: 4. The work fixing part comprises a fixing part main body for inserting and holding a workpiece, and a pair of work fixing members for fixing the workpiece to the fixing part main body. A work hole can be inserted and positioned in the holding hole, and the pair of work fixing members are provided on the fixing portion main body so as to be openable and closable, and in a closed state thereof. 4. The honing jig according to claim 3, wherein the outer peripheral portion of the workpiece inserted and positioned in the holding hole is held and fixed in a holding manner from both sides. 5. The pair of work fixing members are pivotally supported by the fixing portion main body so as to be openable and closable in a horizontal direction, and each work fixing member has a cylindrical inner peripheral surface that forms a part of the holding hole. The honing jig according to claim 4, further comprising a work locking portion that locks the outer peripheral step portion of the workpiece. 6. The honing jig according to claim 1, wherein the jig base is provided with a locking portion that resiliently locks with the positioning device of the work transfer unit. 7. disposed in a loop or linear, wherein
The honing jig according to any one of Items 1 to 6,
A work transfer unit provided with a work transfer device for transferring, at least one honing machine disposed at an intermediate position of the work transfer unit and performing honing processing on a workpiece transferred by the work transfer device; and At least one measuring device that is arranged in the middle of the section and measures the processing diameter of the workpiece, and a control device that automatically controls the work transfer device, the honing machine and the measuring device in conjunction with each other. An automatic honing system, characterized in that: 8. The automatic honing system according to claim 7, wherein the measuring device is arranged independently of the honing machine. 9. The automatic honing system according to claim 7, wherein the measuring device is disposed integrally with the honing machine. 10. The honing unit according to claim 1, wherein
A conveyance path for placing and guiding the jig, a work conveyance device for tact-feeding the honing jig placed on this conveyance path to the honing machine and the measuring device, and a honing jig tact-fed by the work conveyance device 8. The automatic honing system according to claim 7, further comprising: a positioning device that positions the workpiece at a processing position of the honing machine and a measurement position of the measuring device. 11. The honing machine is capable of reciprocating in the axial direction of a workpiece diametric surface of a workpiece, and is rotatably supported about an axis. A spindle rotating means for rotating and driving, a spindle reciprocating means for reciprocating the rotating spindle in the axial direction of the processing diameter surface, and a honing grindstone attached to the tip of the rotation spindle and having a grinding wheel surface along the processing diameter surface. A honing tool provided to be able to expand and contract, a grindstone driving means for giving a predetermined cutting operation to a honing grindstone of the honing tool, and a control for automatically controlling the operations of the spindle rotating means, the spindle reciprocating means and the grinding wheel driving means in conjunction with each other. An automatic honing system according to claim 7, comprising means. 12. The automatic honing system according to claim 7, wherein the measuring device has an air micrometer attached to a tip of a shaft that is reciprocally movable in an axial direction of a radial surface of the workpiece.