JP2008036767A - Assembling device of roller tappet and assembling method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembling device of a roller tappet and an assembling method thereof which is one process in a hydraulic pressing machine and can assemble the roller tappet while preventing deformation of a skirt end part in assembling a roller pin. <P>SOLUTION: The assembling device of the roller tappet comprises a positioning mechanism which positions the pin hole center of the tappet body 101 placed on a V block 1 fixed on a base and the center of a press-fit tool 201 of a pressing machine 200, a stopper member 5 which is formed on the skirt end part of the tappet body 101, and can be inserted and extracted between two opposed inner surfaces opposed to both sides of the roller 103, and a support body 7 for supporting the stopper member 5 between the opposed inner surfaces so as to be able to advance and retreat. A deformation preventing implement 10 for preventing the deformation of the skirt end part in press fitting to the pin hole of the tappet body 101 of the roller pin 103 with the press-fit tool 201 is mounted on the base by inserting the stopper member 5 between the opposed inner surfaces. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is applied to an assembling operation of a roller tappet for an engine. A tappet body of a roller tappet is placed on a V-shaped support surface of a V block which can be fixed on a base. The present invention relates to a roller tappet assembling apparatus configured to press-fit a roller pin fitted with a roller by a press-fitting tool of a press machine and fix the roller pin to a tappet body, and a method of assembling the roller tappet.

6A and 6B show the structure of the roller tappet for an engine, and FIG. 6A is a partial sectional view taken along the axis of the tappet body and the axis of the roller pin (a sectional view taken along the line ZZ in FIG. 6B). These are the Y arrow line views in (A).
In FIG. 6, reference numeral 100 denotes a roller tappet, which is a cylindrical tappet main body 101, a roller pin 104 press-fitted into a pin hole 101 b of a skirt portion 101 d of the tappet main body 101, and a central portion of the roller pin 104 that is rotatable via a bearing 105. The roller 103 is supported by the roller. Reference numeral 100 a denotes a space for storing the roller 103.

FIG. 7 is a cross-sectional view along the axis 104X of the roller pin 104 showing an example of a conventional means for assembling the roller pin 104 to the tappet body in the roller tappet.
In FIG. 7, 3 is a base plate (base), 1 is a V block that can be fixed on the base plate 3, 200 is a hydraulic press, 201 is a press-fitting tool of the hydraulic press 200, and 202 is a base plate 3. It is a table of the hydraulic press 200.
When assembling the roller tappet 100, the roller tap 104 is inserted into the roller storage space 100a of the tappet body 101 with the roller 103 supported via the bearing 105, and the roller pin 104 is inserted into the pin hole 101b of the skirt portion 101d. As a result, the roller tappet 100 is temporarily assembled. Further, a jig 204 (indicated by a two-dot chain line) is inserted between two opposing inner surfaces 101c, 101c formed on the skirt end portion 101a having a chordal cross section of the tappet body 101 and facing both side surfaces of the roller 103. Then, the skirt end 101a is subjected to deformation prevention measures to produce a temporary assembly of the roller tappet 100 with the jig, and the temporary assembly 101 is connected to the longitudinal axis 101Z of the tappet body 101. The V block 1 is placed on the V-shaped support surface 1a in parallel with the V-shaped support surface 1a.

Next, it is visually confirmed whether the shaft center 104X of the roller pin 104 matches the shaft center 201X of the press-fitting tool 201. If they match, the hydraulic press 200 is operated, and the roller pin 104 is moved by the press-fitting tool 201. Press to press fit into the pin hole 101b of the tappet body 101. At this time, the roller pin 104 is press-fitted into the pin hole 101b with a constant target hydraulic pressure while measuring the pressure hydraulic pressure by the press-fitting tool 201 with a pressure gauge (not shown).
At this time, since the jig 204 is inserted between the two opposed inner surfaces 101c, 101c, the press-fitting tool 201 comes into contact with the skirt end 101a having a small rigidity when the roller pin 104 is press-fitted by the press-fitting tool 201, The side surface 103a of the roller 103 and the opposed inner surfaces 101c, 101c are prevented from being deformed.
After the press-fitting process of the roller pin 104 is completed, the jig 204 is pulled out from between the opposed inner surfaces 101c and 101c to complete the tappet assembly process.

  In Patent Document 1 (Japanese Patent Application Laid-Open No. 9-131626), the work 53 is held by the movable jig 1, and the center of the work 53 is performed by the centering member C via the movable jig 1. A work by a press-fitting machine that suppresses deformation of the press-fitting member 55 due to a load when it is eccentric by automatically arranging the longitudinal axis X of the press-fitting member 55 and the press-fitting hole 53a of the work 53 concentrically. A support device is disclosed.

JP-A-9-131626

In the conventional roller tappet assembly method as shown in FIG.
(1) Insert the roller pin 104 into the pin hole 101b of the skirt portion 101d by inserting the roller pin 104 into the roller storage space 100a of the tappet body 101 through the bearing 105 in a so-called outer setup process. Thus, the roller tappet 100 is temporarily assembled, and a jig for preventing deformation at the time of press-fitting is inserted between the two opposing inner surfaces 101c of the skirt end 101a in the temporarily assembled state of the roller tappet 100. A setup process;
(2) The roller tappet temporary assembly with the jig is placed on the V-shaped support surface 1a of the V block 1, and the shaft center 104X of the roller pin 104 is aligned with the shaft center 201X of the press-fitting tool 201 of the hydraulic press 200. It is visually confirmed whether they match, and when they match, the jig is pressed into the pin hole 101b of the tappet body 101 while preventing the deformation of the skirt end 101a. The roller tappet is assembled by two processes of the main assembly process of the roller tappet that is pulled out between the inner surfaces 101c and 101c.

  Therefore, in this conventional roller tappet assembly method, what is the main assembly process of press-fitting the roller pin 104 into the pin hole 101b of the tappet body 101 on the base plate 3 and the V block 1 of the hydraulic press 200 by the press-fitting tool 201? Separately, an extra setup process is required in which an external setup process for a temporary assembly in which a jig is inserted into the tappet body is performed, and the temporary assembly is loaded onto the base plate 3 and the V block 1 of the hydraulic press 200 and attached. The assembly of the roller tappet 100 requires a lot of man-hours.

  In view of the problems of the prior art, the present invention eliminates the need for an external setup step for assembling the roller pin to the tappet body when assembling the roller tappet, and the shaft centers of the base plate, the V block, and the tappet body on the hydraulic press machine. Another object of the present invention is to provide a roller tappet assembling apparatus and a method for assembling a roller tappet that have a positioning function for matching the roller pins and prevent deformation of the skirt end when the roller pin is assembled.

  The present invention achieves such an object. A tappet body of a roller tappet is placed on a V-shaped support surface of a V block that can be fixed on a base, and a roller is placed in a pin hole of the tappet body. In a roller tappet assembly device configured to press-fit a fitted roller pin with a press-fit tool attached to a press machine and fix the roller pin to a tappet body, the base is positioned on a table of the press machine. And a positioning mechanism for positioning the center of the pin hole of the tappet body placed on the V block and the center of the press-fitting tool, and opposed to both side surfaces of the roller formed at the skirt end portion of the tappet body. A stopper member that can be inserted or removed between the two opposing inner surfaces, and a support body that supports the stopper member so as to be able to advance and retract between the opposing inner surfaces. In addition, by inserting the stopper member between the opposed inner surfaces, the tappet main body is placed on the V block accurately in the horizontal direction, and the roller pin by the press-fitting tool is inserted into the pin hole of the tappet main body. A deformation preventing jig for preventing deformation of the skirt end during press-fitting is attached to the base (claim 1).

  The invention relating to a method for assembling a roller tappet using the assembling apparatus further comprises: placing a tappet body of a roller tappet on a V-shaped support surface of a V block which can be fixed on a base; A roller tappet assembling method in which a roller pin fitted with a roller is press-fitted into a pin hole by a press-fitting tool attached to a press machine and the roller pin is fixed to the tappet body. A positioning pin hole drilled in the base is fitted to a positioning pin erected concentrically with the press-fitting tool of the press machine, and the base is placed on the table of the press machine and fixed, The tappet body of the roller tappet is placed on the V-shaped support surface of the V block fixed to the base, and the center and front of the pin hole of the tappet body are adjusted using the tappet position adjusting means. The tappet body position is adjusted so that the shaft center of the press-fitting tool is concentric, and a stopper member is inserted between two opposed inner surfaces formed on the skirt end portion of the tappet body and opposed to both side surfaces of the roller. The main body is placed on the V block in the horizontal direction and the roller pin is pressed by the press-fitting tool of the press machine while the surface of the stopper member is in contact with two opposing inner surfaces. It is press-fitted into the pin hole of the main body (claim 6).

  According to this invention, a positioning pin is erected concentrically with the press-fitting tool on the table of the press machine, and the base on which the V block on which the tappet body is placed is fixed is positioned on the table using the positioning pin. The position of the tappet body is adjusted so that the center of the pin hole of the tappet body and the axis of the press-fitting tool are concentric, and positioning on the V block is performed. On the table of the press machine, the stopper member is inserted between the two facing inner surfaces of the skirt end, brought into contact with the facing inner surface, and the roller pin is press-fitted into the pin hole of the tappet body by the press-fitting tool of the press machine. The roller tappet can be assembled in one step on the base and V block to be placed.

As a result, the roller tappet skirt outside the machine of the hydraulic press before the press-fitting process (main assembly process) of the roller pins into the tap holes of the tappet body by the press-fitting tool on the base plate and the V block as in the prior art. The skirt end when assembling the roller pin to the tappet body is eliminated, as the temporary assembly of the temporary assembly with a jig for preventing deformation during press-fitting is inserted between the two opposing inner surfaces of the end part The number of assembling steps of the roller tappet can be greatly reduced as compared with the prior art while preventing the deformation of the portion.
Also, the tappet body is positioned using the deformation prevention jig installed on the base plate, and the press-fitting tool press-fits the roller pin into the pin hole of the tappet body while preventing the deformation of the skirt end. Can be carried out continuously without removing the workpiece, work jig and tool, so that the press-fitting work of the roller pin into the pin hole of the tappet body can be performed with high accuracy and speed, and the assembly work efficiency of the roller tappet is improved. improves.

In this invention, preferably, the positioning mechanism is erected on a table of the press machine concentrically with the press-fitting tool of the press machine and is fitted into a positioning pin hole drilled in the base. A tappet position adjusting means for adjusting the position of the tappet body so that the center of the pin hole of the tappet body placed on the V block is concentric with the axis of the press-fitting tool. Provided (Claim 2).
With this configuration, the base of the press-fitting tool and the tappet main body are positioned by positioning the base on the positioning pins and positioning the tappet main body placed on the V block fixed on the base. The center of the pin hole can be easily and accurately matched.

In this invention, the deformation preventing jig is specifically configured as follows.
(1) Two deformation prevention jigs are installed on the base so that an opening angle of the stopper member with respect to the pin hole center of the tappet body is substantially a right angle. The stopper member is configured to be insertable at two positions therebetween (Claim 3).
According to this structure, the stopper members of the two deformation prevention jigs are arranged so that the opening angle of the shaft center is substantially perpendicular, so that the stopper members are placed on both sides of the roller at the end of the skirt. When inserting between the two opposing inner surfaces, the tip of the stopper member does not contact the outer periphery of the roller, and the contact area between the opposing inner surface and the stopper member can be maximized. The greatest effect of preventing deformation of the skirt end at the time of press-fitting into the tappet body pin hole can be obtained.

(2) The deformation preventing jig includes a column which is erected on the base so as to fit and support the support body so that the support body can be moved up and down and cannot be relatively rotated, and the stopper member and the support body Are connected to the inner surface of the tappet body by the screws, and the support member is moved up and down along the fitting portion with the support column to thereby remove the stopper member and the tappet body. The height with respect to the opposing inner surface is adjusted, and the amount of insertion between the opposing inner surfaces of the tappet body is adjusted by the screwing amount of the stopper member into the support (claim 4).
If comprised in this way, while being able to move up and down freely the support body of a stopper member standing on a base and along a support | pillar, the tappet of a stopper member can be changed by changing the screwing amount of the stopper member to this support body The insertion amount between the opposing inner surfaces of the main body can be easily adjusted, and the insertion amount adjustment between the opposing inner surfaces at the position of the tip of the stopper member can be easily performed with high accuracy.

(3) The deformation preventing jig is formed such that a stopper piece constituting the distal end portion of the stopper member is inserted into a portion between the opposed inner surfaces of the tappet body in a tapered shape that can be fitted between the opposed inner surfaces. (Claim 5).
According to this configuration, when the stopper piece is inserted between the opposing inner surfaces of the tappet body, even if there is a tolerance in the distance between the opposing inner surfaces, the pushing margin of the tapered tip end portion of the stopper member is set according to the tolerance. By adjusting, the stopper member can be reliably fitted between the opposed inner surfaces.
Further, when the longitudinal axis of the tappet body is not placed in parallel on the V-shaped support surface of the V block, the taper portions of the two stopper members are fitted between the opposing inner surfaces, and the skirt portion By adjusting the end portion to a substantially parallel position, the press-fitting tool of the hydraulic press does not contact the skirt portion, so that deformation can be prevented.

According to the present invention, a positioning pin is erected on the table of the press machine concentrically with the press-fitting tool, and the base on which the V block on which the tappet body is placed is fixed is positioned on the table using the positioning pin. The position of the tappet body is adjusted so that the center of the pin hole of the tappet body and the axis of the press-fitting tool are concentric, and positioning on the V block is performed. On the table of the press machine, the stopper member is inserted between the two facing inner surfaces of the skirt end, brought into contact with the facing inner surface, and the roller pin is press-fitted into the pin hole of the tappet body by the press-fitting tool of the press machine. The roller tappet can be assembled in one step on the base and V block to be placed.
As a result, the roller tappet skirt outside the machine of the hydraulic press before the press-fitting process (main assembly process) of the roller pins into the tap holes of the tappet body by the press-fitting tool on the base plate and the V block as in the prior art. The skirt end when assembling the roller pin to the tappet body is eliminated, as the temporary assembly of the temporary assembly with a jig for preventing deformation during press-fitting is inserted between the two opposing inner surfaces of the end part The number of assembling steps of the roller tappet can be greatly reduced as compared with the prior art while preventing the deformation of the portion.
Also, the tappet body is positioned using the deformation prevention jig installed on the base plate, and the press-fitting tool press-fits the roller pin into the pin hole of the tappet body while preventing the deformation of the skirt end. Can be carried out continuously without removing the workpiece, work jig and tool, so that the press-fitting work of the roller pin into the pin hole of the tappet body can be performed with high accuracy and speed, and the assembly work efficiency of the roller tappet is improved. improves.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.

FIG. 6 shows the structure of the roller tappet used in the present invention, (A) is a partial cross-sectional view along the axial center line of the tappet body and the axial center line of the roller pin (cross-sectional view along the line ZZ in (B)), (B) is a view on arrow Y in (A).
In FIG. 6, reference numeral 100 denotes a roller tappet, which is a cylindrical tappet main body 101, a roller pin 104 press-fitted into a pin hole 101 b of a skirt portion 101 d of the tappet main body 101, and a central portion of the roller pin 104 that is rotatable via a bearing 105. The roller 103 is supported by the roller. Reference numeral 100 a denotes a space for storing the roller 103. This roller tappet 100 is a well-known roller tappet mainly used for a vehicle engine.
The present invention relates to an assembling apparatus and assembling method for a roller tappet having the above-described configuration.

FIG. 1 is a perspective view showing the overall structure of an assembly apparatus for an engine roller tappet according to an embodiment of the present invention, and FIG. 2 is a plan view showing a partial cross section of the assembly apparatus for the roller tappet. 3 is a cross-sectional view taken along line AA of FIG. 2 in the embodiment, FIG. 4 is a cross-sectional view taken along line BB of FIG. 2 in the embodiment, and FIG. 5 is a side view of the stopper member in the embodiment.
1 to 5, 200 is a hydraulic press, 201 is a press-fitting tool of the hydraulic press 200, and 3 is a base plate (base) fixed on the table 202 of the hydraulic press 200. On the base plate 3, two V blocks 1 and 2 are juxtaposed in the longitudinal direction of the roller tappet 100.

As shown in FIG. 3, the two V blocks 1 and 2 have a V-shaped support surface 2a, and an insertion portion of the roller pin 104 of the roller tappet 100 is placed on the V block 2 on one side. The cylindrical portion of the tappet body 101 of the roller tappet 100 is placed on the other V block 1. That is, the roller tappet 100 is placed on the V-shaped support surface 2a with the longitudinal axis 101Z of the tappet body 101 parallel to the V-shaped support surface 2a of the V blocks 1 and 2.
As shown in FIG. 3, the table 202 of the hydraulic press 200 includes a positioning pin hole 3d drilled in the base plate 3 concentrically with the press-fitting tool 201 and a positioning pin hole 3c drilled in the V block 2. Is inserted so as to contact the roller pin 104 of the tappet. Thereby, all of the axial center 201X of the press-fitting tool 201, the center 101X of the pin hole 101b of the tappet body 101, the center 2X of the V block 2, and the axial center 11X of the positioning pin 11 are arranged concentrically. Become.

  As shown in FIG. 2, reference numeral 4 denotes a back positioning block which is a position adjustment means in the longitudinal direction of the tappet. The back surface of the tappet main body 101 comes into contact with it, and the dimension C is moved in the longitudinal axis 101Z direction of the tappet main body 101 Thus, the position of the tappet main body 101 in the longitudinal direction of the axial center 101Z is set and positioned.

  In this way, the positioning mechanism of the tappet body 101 is erected on the table 202 of the hydraulic press 200 concentrically with the press-fitting tool 201 of the hydraulic press 200, and the positioning pin hole 3d drilled in the base plate 3 and the V block 2 The positioning pin 11 fitted into the positioning pin hole 3c drilled in the center, the center 101X of the pin hole 101b of the tappet main body 101 placed on the V blocks 1 and 2, and the axis 201X of the press-fitting tool 201 are all. Since the back portion positioning block 4 that adjusts the position of the tappet body 101 so as to be concentric, the base plate 3 and the V block 2 are positioned by the positioning pin 11, and the pin hole 101 b of the tappet body 101 is positioned by the back portion positioning block 4. Tappet book so that the center is located at the center of V block 2 By positioning the position of 101, easily the center 101X of the pin hole 101b in the axial 201X and the tappet body 101 of the press tool 201, and can be accurately matched.

Reference numerals 10 and 10 denote deformation preventing jigs, which are configured as follows.
Two of the deformation preventing jigs 10 are installed on the base plate 3 and can be changed in height, a stopper block 5 screwed to the support block 7, and standing on the base plate 3. The support block 7 is composed of a pillar 6 having a square cross section that fits and supports the support block 7 so that the support block 7 can move up and down and cannot rotate relative to the support block 7.
As shown in FIG. 2, the support block 7 is provided with a square cross-section hole that fits into the square cross-section support 6, and is configured to be vertically movable along the support 6 without being relatively rotatable. Reference numeral 8 denotes a cover that covers the column 6.

As shown in FIG. 5, the stopper member 5 includes a screw portion 5a screwed into a screw hole of the support block 7, a knob portion 5c for manual rotation, and a stopper piece 5b at the tip. The stopper piece 5b includes a cylindrical portion 5b2 having an outer diameter D that is the same as or slightly larger than a width B (see FIG. 4) between the opposed inner surfaces 101c, 101c, an outer diameter D of the cylindrical portion 5b2, and an outer diameter D1 of the tip portion. And a tapered portion 5b1 having a reduced diameter (see FIG. 5).
As shown in FIGS. 2 and 4, the stopper member 5 moves the screw portion 5a along the screw hole of the support block 7 by rotating the knob portion 5c. The tappet body 101 is configured to be insertable at two locations between two opposing inner surfaces 101c and 101c on both sides of the roller of the skirt end portion 101a.
Since the stopper member 5 is configured in this manner, there is a tolerance in the width B (see FIG. 4) between the opposing inner surfaces 101c and 101c when the stopper piece 5b is inserted between the opposing inner surfaces 101c and 101c of the tappet body 101. Even so, the push-in allowance of the tapered portion 5b1 of the stopper member 5 can be adjusted according to the tolerance. If the longitudinal axis 101Z of the tappet body 101 is not placed in parallel on the V-shaped support surface 2a of the V blocks 1 and 2, the tapered portions 5b1 of the two stopper members 5 are opposed to the inner surface 101c. The longitudinal center axis 101Z of the tappet body 101 is parallel to the V-shaped support surface 2a of the V blocks 1 and 2 by being inserted between them and the end of the skirt portion 101d being adjusted to a substantially parallel position. Since the press-fitting tool 201 of the hydraulic press 200 is not in contact with the skirt portion 101d, deformation can be prevented.

  As described above, the deformation preventing jig 10 includes the support column 6 that is erected on the base plate 3 and that supports the support block 7 so that the support block 7 can be moved up and down and cannot be relatively rotated. The member 5 and the support block 7 are screwed together by a screw portion 5a, and the taper portion 5b1 can be inserted or extracted between the opposed inner surfaces 101c, 101c of the tappet body 101 by the screw portion 5a. The height of the stopper member 5 and the opposed inner surfaces 101c, 101c of the tappet main body 101 is adjusted by moving up and down along the square fitting portion with the support column 6 to the support block 7 of the stopper member 5. The amount of insertion between the opposed inner surfaces 101c and 101c of the tappet body 101 is adjusted by the screwing amount of The support block 7 of the stopper member 5 can freely move up and down along the column 6 having a square cross section standing on the base plate 3, and the screwing amount of the stopper member 5 into the support block 7 can be changed. Thus, the insertion amount of the stopper member 5 between the opposing inner surfaces 101c and 101c of the tappet body 101 can be easily adjusted, and the insertion amount adjustment between the opposing inner surfaces 101c and 101c at the tip end position of the stopper member 5 can be easily performed. In addition, it can be performed with high accuracy.

Further, as shown in FIG. 2, the two deformation preventing jigs 10 have an opening angle α of the axis 5Z of the stopper member 5 with respect to the center 101X of the pin hole 101b of the tappet body 101 is substantially perpendicular (90 °). It is installed to become.
Since the two deformation preventing jigs 10 are configured in this way, the opening angle α of the shaft center of the stopper members 5 and 5 of the two deformation preventing jigs 10 is substantially perpendicular (90 °) as shown in FIG. When the stopper member 5 is inserted between the two opposing inner surfaces 101c and 101c facing the opposite side surfaces 103a and 103a of the roller 103 of the skirt end 101a, the stopper member 5 is disposed. , 5 at the tip of the stopper piece 5b does not contact the outer periphery of the roller 103, and the contact area between the opposed inner surfaces 101c, 101c and the stopper member 5 can be maximized.
Further, the end portion of the skirt portion 101d is adjusted to a substantially parallel position by inserting the tapered portion 5b1 of the stopper member 5 between the opposed inner surfaces 101c and 101c, so that the press-fitting tool 201 of the hydraulic press 200 is adjusted to the skirt. It is not necessary to contact the portion 101d, and deformation can be prevented.

When assembling the roller tappet 100 using the roller tappet assembly apparatus configured as described above, the positioning pin 11 provided on the table 202 of the hydraulic press 200 concentrically with the press-fitting tool 201 is attached to the base plate 3. The base plate 3 and the V block 2 are placed on the table 202 of the hydraulic press 200 and fixed by fitting the perforated positioning pin hole 3d and the positioning pin hole 3c perforated in the V block 2. The V block 2 is fixed on the base plate 3 so that the center 2X of the V-shaped portion of the V block 2 coincides with the axis 11X of the positioning pin 11, so that the base plate 3 and the V block 2 are placed on the table 202. By mounting and fixing, the center of the V-shaped part of the V block 2 and the press-fitting tool 201 are arranged concentrically.
Insert the roller storage space 100a of the tappet body 101 in a state where the roller 103 is supported via the bearing 105, and further insert the roller pin 104 into the pin hole 101b of the skirt portion 101d so that the roller tappet 100 is temporarily assembled. It mounts on the support surface 2a of the blocks 1 and 2.

Next, or simultaneously with the above operation, the center 101X of the pin hole 101b of the tappet body 101 is adjusted by adjusting the C dimension in the longitudinal axis 101Z direction of the tappet of the back positioning block 4 with which the back surface of the tappet body 101 abuts. The direction position is determined at the same position as the press-fitting tool 201.
By the above positioning operation, the tappet main body 101 is positioned on the V block 1 and the V block 2 concentrically with the press fitting tool 201, fixed on the V block 1 and the V block 2, and The roller pin 104 can be press-fitted into the pin hole 101b.

Through the above operation, the center 101X of the pin hole 101b of the tappet body 101 is positioned concentrically with the axis 201X of the press-fitting tool 201, and then formed on the skirt end portion 101a of the tappet body 101 so as to face both side surfaces of the roller 103. The stopper piece 5b at the tip of the stopper member 5 of the deformation preventing jig 10 is inserted between the two opposed inner surfaces 101c, 101c by rotating the knob portion 5c for manual rotation, and the stopper piece 5b With the taper portion 5b1 in contact with the two opposing inner surfaces 101c, 101c, the roller pin 104 is pressed by the press-fitting tool 201 of the hydraulic press 200 to press-fit into the pin hole 101b of the tappet body 101.
At this time, since the tapered portion 5b1 of the stopper piece 5b is inserted between the two opposing inner surfaces 101c, 101c, the skirt end portion 101a having a small rigidity is deformed when the roller pin 104 is press-fitted by the press-fitting tool 201, It is possible to prevent the side surface 103a of the roller 103 from coming into contact with the opposed inner surfaces 101c and 101c.

Further, the stopper piece 5b at the tip of the stopper member 5 is inserted by screw feeding between the opposed inner surfaces 101c and 101c by rotating the knob portion 5c for manual rotation. 4, the position of the center 101X of the pin hole 101b in the axial center 101Z direction of the tappet body 101 is held at the same position as the axial center 201X of the press-fitting tool 201, and the press of the roller pin 104 by the press-fitting tool 201 is ensured. Can be done.
Further, not only is the position of the tappet body 101 in the direction of the axis 101Z, but also the stopper piece 5b is inserted between the opposed inner surfaces 101c, 101c, so that the tappet body 101 can be rotated around the axis 101Z. Since it is positioned and held, the pressing of the roller pin 104 by the press-fitting tool 201 can be further reliably performed.

  According to this embodiment, the positioning pin 11 is erected on the table 202 of the hydraulic press 200 so as to be concentric with the axial center 201 </ b> X of the press-fitting tool 201, and the tappet body 101 is placed using the positioning pin 11. 2 and the base plate 3 to which the V block 2 is fixed are positioned and fixed on the table 202, and the center 101X of the pin hole 101b of the tappet body 101 and the axis 201X of the press-fitting tool 201 are concentric. Positioning on the V blocks 1 and 2 is performed by adjusting the position of the 101, and the stopper member 5 of the deformation preventing jig 10 is inserted between the two opposing inner surfaces 101c and 101c of the skirt end 101a of the tappet body 101. The abutting inner surfaces 101c and 101c are brought into contact with the press fitting tool 201 of the hydraulic press 200. The roller tappet 100 can be assembled in one step on the base plate 3 and the V blocks 1 and 2 placed on the table 202 of the hydraulic press 200 in which the roller pin 104 is press-fitted into the pin hole 101b of the tappet body 101. .

  Accordingly, the roller tappet outside the press of the hydraulic press before the press-fitting step (main assembly step) of the roller pin 104 into the tappet body 101b of the tappet body by the press-fitting tool on the base plate and the V block as in the prior art. An outer setup step of temporary assembly of a temporary assembly in which a jig for preventing deformation at the time of press-fitting is inserted between the two opposing inner surfaces 101c of the 100 skirt end portions 101a becomes unnecessary, and the roller pin 104 is attached to the tappet body 101. The number of assembling steps of the roller tappet 100 can be greatly reduced as compared with the prior art while preventing deformation of the skirt end portion 101a during assembly.

  Further, the tappet body 101 of the roller pin 104 by the press-fitting tool 201 while preventing the deformation of the skirt end portion 101 a by the deformation prevention jig 10 while positioning the tappet body 101 using the deformation prevention jig 10 installed on the base plate 3. Since the press-fitting work into the pin hole 101b can be carried out continuously without removing the workpiece, work jig and tool, the press-fitting work of the roller pin 104 into the pin hole 101b of the tappet body can be performed with high accuracy and speed. As a result, the assembly work efficiency of the roller tappet 100 is improved.

  According to the present invention, when assembling the roller tappet, the outer setup process for assembling the roller pin to the tappet body is not required, and deformation of the skirt end is prevented in one process on the hydraulic press machine and when the roller pin is assembled. In addition, it is possible to provide a roller tappet assembling apparatus and a method for assembling a roller tappet.

It is a perspective view showing the whole composition of the assembly device of the roller tappet for engines concerning the example of the present invention. It is a top view which shows the partial cross section of the assembly apparatus of the said roller tappet. It is the sectional view on the AA line of FIG. 2 in the said Example. It is the BB sectional drawing of FIG. 2 in the said Example. It is a side view of the stopper member in the said Example. The structure of the roller tappet used for this invention is shown, (A) is a partial sectional view along the axial center line of the tappet main body and the axial center line of the roller pin (the ZZ line sectional view in (B)), (B) These are the Y arrow line views in (A). It is sectional drawing which follows the axial center line of the roller pin which shows the assembly | attachment means of the roller pin to the tappet main body which concerns on a prior art.

Explanation of symbols

1, 2 V block 2X Center of V block 2 2a V-shaped support surface 3 Base plate (base)
4 Back Positioning Block 5 Stopper Member 5a Threaded Part 5b Stopper Piece 5b1 Tapered Part 5Z Axis Center of Stopper Member 6 Post 7 Support Block 10 Deformation Prevention Jig 11 Positioning Pin 11X Positioning Pin Axis 100 Roller Tappet 101 Tappet Body 101a Skirt End Portion 101b Pin hole 101c Opposite inner surface 101d Skirt portion 101X Center of pin hole 101Z Center of tappet body 103 Roller 104 Roller pin 104X Roller pin shaft 105 Bearing 200 Hydraulic press 201 Press-fit tool 201X Press-fit tool shaft

Claims (6)

  The tappet body of the roller tappet is placed on the V-shaped support surface of the V block that can be fixed on the base, and the roller pin with the roller fitted in the pin hole of the tappet body is mounted on the press machine. In a roller tappet assembly device configured to press-fit with a press-fit tool and fix the roller pin to the tappet body, the base is positioned on the table of the press machine and placed on the V block. Positioning mechanism for positioning the center of the pin hole of the tappet body and the center of the press-fitting tool, and insertion or extraction between two opposing inner surfaces formed on the skirt end of the tappet body and facing both sides of the roller A stopper member and a support member that supports the stopper member so as to advance and retreat between the opposing inner surfaces, and the stopper member is opposed to the opposing member. The tappet body is placed on the V block accurately in the horizontal direction by inserting between the faces, and the skirt end portion when the roller pin is press-fitted into the pin hole of the tappet body by the press-fitting tool An assembly apparatus for a roller tappet, wherein a deformation preventing jig for preventing deformation of the roller tappet is mounted on the base.   The positioning mechanism is erected on a table of the press machine concentrically with a press-fitting tool of the press machine, and an axis of a positioning pin fitted in a positioning pin hole drilled in the base, and the V A tappet position adjusting means for adjusting the position of the tappet body so that the center of the pin hole of the tappet body placed on the block and the axial center of the press-fitting tool are concentric is provided. The roller tappet assembly apparatus according to claim 1.   Two deformation prevention jigs are installed on the base so that the opening angle of the stopper member with respect to the center of the pin hole of the tappet body is substantially perpendicular, and 2 between the opposing inner surfaces of the tappet body. 2. The roller tappet assembly device according to claim 1, wherein the stopper member can be inserted into a place.   The deformation prevention jig is provided on a base and is provided with a support column that supports the support body so that the support body can be moved up and down and cannot rotate relative to each other, and the stopper member and the support body are screwed together. The stopper member and the opposing inner surface of the tappet main body can be inserted into or withdrawn from the opposing inner surface of the tappet main body by the screws, and the support member is moved up and down along the fitting portion with the support column. 2. The roller tappet according to claim 1, wherein the height of the tappet body is adjusted, and the amount of insertion between the opposing inner surfaces of the tappet body is adjusted by the screwing amount of the stopper member into the support. Assembly equipment.   The deformation preventing jig is formed by forming an insertion portion between the opposing inner surfaces of the tappet body of the stopper piece constituting the distal end portion of the stopper member into a tapered shape that can be fitted between the opposing inner surfaces. The roller tappet assembly apparatus according to claim 1.   The tappet body of the roller tappet is placed on the V-shaped support surface of the V block that can be fixed on the base, and the roller pin with the roller fitted in the pin hole of the tappet body is mounted on the press machine. An assembly method of a roller tappet in which the roller pin is fixed to the tappet body by press-fitting with a press-fit tool, wherein the base pin is placed on a positioning pin that is concentric with the press-fit tool of the press machine on a table of the press machine. The base is placed on the table of the press machine and fixed by fitting a positioning pin hole drilled in the base, and the V-shaped support surface of the V block fixed to the base is Place the tappet main body of the roller tappet, adjust the tappet main body position so that the center of the pin hole of the tappet main body and the axis of the press-fitting tool are concentric using the tappet position adjusting means. A stopper member is inserted between two opposing inner surfaces that are formed at the skirt end of the base body and are opposed to both side surfaces of the roller so that the tappet body is placed on the V block accurately in the horizontal direction. An assembly method of a roller tappet, wherein the roller pin is pressed into a pin hole of the tappet body by a press-fitting tool of the press machine in a state where the surface of the member is in contact with two opposing inner surfaces.

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