JP2002346661A - Cam unit and reamer bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize and lighten a cam unit mounted on a fixed die and a movable die in a press die, for example, used for forming and working a frame and a panel of a car or the like. SOLUTION: In a cam unit 1 comprising a cam base 10b, a cam slider mounted on the cam base, and a cam driver 10a for actuating the cam slider, the cam base or the cam driver is positioned and tightened on a fixed die or a movable die with a reamer bolt 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a press unit used for forming and processing a frame or a panel of an automobile or the like, and a cam unit mounted on a fixed die and a movable die, and used for mounting the cam unit. Reamer bolt
The present invention relates to a cam unit and a reamer bolt which reduce the number of man-hours for positioning holes when mounting the cam driver and the cam base in the fixed die and the movable die in the cam unit, and reduce the number of mounting parts and reduce the size. .

[0002]

2. Description of the Related Art Conventionally, as a cam unit, as shown in FIG.
0b is provided with a reamer hole 11 for positioning and a hole 12 for fastening, and a fixing mold 13 is provided at a position corresponding to these holes.
The reaming hole 14 and the fastening screw hole 15 are provided on the mounting surface of the moving mold 13a or the moving mold 13b.

When the cam unit is mounted on the mold 13, the reaming hole 11 and the reaming hole 14 are aligned, a knocking pin 16 for positioning is inserted into the reaming hole 11, and a cover member 16a for preventing disengagement is screwed. Is done. Thereafter, the fastening bolt 17 is screwed into the screw hole 15. In this manner, the positioning hole and the fastening screw hole have, for example, a pitch a
= 20 mm and are provided in the front-back direction or the left-right direction in the horizontal plane.

[0004]

However, by providing the positioning holes and the holes through which the fastening bolts are inserted, the cam unit requires an effective area corresponding to the flange, and accordingly, the cam driver or the cam base is required. The width or length of the cam unit becomes large, which is a restriction in designing a small and lightweight cam unit. Processing for these positioning holes and screw holes also takes time. Furthermore, no cam unit using a reamer bolt has been found yet in a cam unit used for a press die. A cam unit and a reamer bolt according to the present invention are proposed to solve such a problem.

[0005]

The gist of the present invention for solving the above problems of the cam unit according to the present invention is to provide a cam unit comprising a cam base, a cam slider provided on the cam base, and a cam driver for moving the cam slider. The cam base or the cam driver is positioned and fastened to a fixed mold or a movable mold by a reamer bolt.

[0006] The reamer bolt includes a fastening bolt,
A knock pin having a through hole through which the bolt is loosely fitted; and further comprising a pull-out screw portion formed in one end opening of the through hole. .

The reamer bolt according to the present invention comprises a fastening bolt and a knock pin having a through hole for loosely fitting the bolt.

According to the cam unit and the reamer bolt according to the present invention, the reamer hole and the screw hole for the fastening bolt can be formed at one place in the mounting portion of the cam unit to the mold of the cam base or the cam driver. The width or length of the mounting portion to the mold can be set smaller than in the conventional example. Therefore, the entire cam unit is compact, and miniaturization and weight reduction are achieved. Also, by using the reamer bolt according to the present invention, it is not necessary to provide the reamer hole and the fastening screw hole at different positions. Further, the attachment / detachment of the knock pin is facilitated by the provision of the screw portion for pulling out.

The reamer bolt includes a fastening bolt,
A knock pin having a through hole for loosely fitting the bolt,
Since it is composed of two parts, it is possible to screw the fastening bolt by passing through the through hole of the knock pin after positioning first with the knock pin at one mounting portion. That is, the positioning operation and the fastening operation can be performed separately. Therefore, even if there is some deviation in the axis between the reamed hole and the screw hole in the mold, the fastening bolt can be attached, and the machining of the reamed hole and the screw hole of the mold is easy.

[0010]

Next, a cam unit and a reamer bolt according to the present invention will be described with reference to the drawings. To facilitate understanding of the present invention, portions corresponding to those of the conventional example will be denoted by the same reference numerals as those of the conventional example.

As shown in FIGS. 1 and 2, the cam unit 1 is, for example, a cam base 1 attached to a fixed mold.
0b, a cam slider 2 provided on the cam base 10b, and a cam driver 1 for moving the cam slider 2
0a.

The cam base 10b and the cam driver 1
No. 0a is positioned and fastened by a reamer bolt 3 to a fixed mold or a movable mold.

The structure of the reamer bolt 3 will be described. As shown in FIG. 3, the reamer bolt 3 is not an integrated reamer bolt, but a fastening bolt 3b and a knock pin 3a having a through hole 3c through which the bolt 3b is inserted.
Consists of As shown in FIG. 3 (c), the knock pin 3a is provided with a thread 3d for pulling out at an upper opening of the through hole 3c.

The outer peripheral portion on the opening side where the screw portion 3d is provided has a head portion 3f having a flange portion and a step portion 3e for locking.

The inner diameter of the through hole 3c of the knock pin 3a is set to be larger than the outer diameter of the screw portion so that the screw portion of the fastening bolt 3b is loosely fitted. The screw portion 3d is also engraved with a larger diameter than the screw portion of the fastening bolt 3b.

The fastening bolt 3b is a bolt similar to the conventional example. Since such a reamer bolt 3 is used, in the cam base 10b or the cam driver 10a, the stepped portion 3e of the knock pin 3a is locked, for example, as shown in FIG. An insertion hole 10e formed with a bottom portion 10d to be formed, and a reamer hole 10f drilled coaxially with the insertion hole 10e,
It is provided in one place. Similarly, an insertion hole 10e and a reamer hole 10f are provided in the other mounting portion 10c.

On the other hand, in the mounting portion on the side of the fixed mold 13a, the reamer hole 1 is located at a position corresponding to the reamer hole 10f.
3c is formed, and a screw hole 13d is formed coaxially with the reamer hole 13c. Similarly, a reamer hole 13c and a screw hole 13d are formed in other places.

In order to attach the cam unit 1 constructed as described above to the fixed mold 13a and the movable mold 13b, for example, the fixed mold 1 shown in FIG.
Explaining the mounting portion 10c between the 3a and the cam base 10b, the dowel pin 3a is inserted by aligning the reamer hole 10f with the reamer hole 13c. Thus, the position of the cam base 10b is determined.

Next, the fastening bolt 3b is screwed by inserting the screw portion on the tip end side into the through hole 3c of the knock pin 3a and fitting it into the screw portion 13d. As a result, the cam base 10b is fixed to the fixed mold 13a. It is similarly attached to other places.

When the fastening bolt 3b is screwed, it is loosely fitted into the through hole 3c of the knock pin 3a with a slight gap. Even if there is a misalignment of the shaft center with the hole 13d, the fastening bolt 3b moves in accordance with the shaft center of the screw hole 13d and is smoothly screwed in without being twisted.

The fixed mold 13a or the movable mold 13b
Then, the cam base 10b or the cam driver 10a is positioned and fastened and fixed by the reamer bolt 3. As shown in FIG. 4, since the mounting hole of the mounting portion 10c may be provided at one location, the overall width b of the cam unit 1 can be designed to be smaller.

Since the knock pin 3a of the reamer bolt 3 is provided with a screw portion 3d for extraction, when the cam base 13b or the like is to be detached from a fixed mold or the like, the fastening bolt 3b is loosened and removed. Later, a headed bolt (not shown) having a screw portion of a predetermined length screwed into the screw portion 3d is screwed.

This will be described with reference to FIG. 3 (A). The headed bolt is inserted into the insertion hole 10e of the mounting portion 10c, fitted in the screw portion 3d, and rotated in the direction of forcibly screwing. . When the head of the bolt comes into contact with the opening end face of the insertion hole 10e and rotates, the knock pin 3a is pulled upward in the drawing via the screw portion 3d.

When the knock pin 3a is pulled out, a spacer or the like is bitten between the opening end face of the insertion hole 10e and the bolt head, and the bolt with the head is further rotated in the screwing direction, so that the knock pin 3a is rotated. It is pulled up. Thus, the knock pin 3a can be forcibly pulled out, and the cam base and the like can be easily disassembled and removed.

[0025]

As described above, the cam unit according to the present invention is a cam unit including a cam base, a cam slider provided on the cam base, and a cam driver for moving the cam slider. , Since the reamer bolt is positioned and fastened to the fixed mold or the movable mold, the mounting area for the reamer bolt can be reduced, and the overall width or length of the cam unit is reduced, thereby reducing the size and weight. It has an excellent effect of being achieved.

The reamer bolt comprises: a fastening bolt;
Since the knocking pin has a through hole through which the bolt is loosely fitted, the positioning action and the fastening action are separated, so that the fastening bolt can be easily screwed after the positioning with the knock pin.

Further, since the knock pin is formed by engraving a screw portion for pulling out at an opening on one end side of the through hole, an excellent effect that disassembly and removal of the cam unit is facilitated is achieved. Things.

Since the reamer bolt according to the present invention comprises a bolt for fastening and a knock pin having a through hole for loosely fitting the bolt, the reamer bolt in the mold is formed by separately acting the positioning action and the fastening action. Even if there is some deviation in the axis between the hole and the screw hole, an excellent effect that the fastening bolt can be attached is exhibited. Further, processing of the reamer hole and the screw hole in the mounting portion on the mold side becomes easy.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cam unit according to the present invention.

FIG. 2 is a longitudinal sectional view of the cam unit according to the present invention.

FIG. 3 is an enlarged longitudinal sectional view (A), a plan view (B), and a sectional view (C) of a knock pin of a part of a mounting portion in the cam unit according to the present invention.

FIG. 4 is a side view of the cam unit according to the present invention.

FIG. 5 is a plan view (A) and a cross-sectional view (B) of a part of a mounting portion in a cam unit according to a conventional example.

[Explanation of symbols]

1 cam unit, 2 cam slider,
3 Reamed bolt, 3a knock pin, 3b
Fastening bolt, 3c through hole, 3d screw,
3e step, 3f head,
10a cam driver, 10b cam base,
10c mounting part, 10d bottom part, 10e
Insertion hole, 10f reamed hole, 11 reamed hole, 12 fastening hole, 13a fixed mold, 13b moving mold, 13c reamed hole, 13d screw hole.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Shoji Nemoto, Inventor 1-1-5 Nisshinmachi, Fuchu-shi, Tokyo Inside Sankyo Oilless Industry Co., Ltd. (72) Hideo Sakurai 1-1, Nisshinmachi, Fuchu-shi, Tokyo 5. Inside Sankyo Oilless Industry Co., Ltd. (72) Inventor Toshiyuki Yokomori 1-1-5 Nisshinmachi, Fuchu-shi, Tokyo F-term inside Sankyo Oilless Industry Co., Ltd. 3J001 FA02 GA01 GB01 HA04 JA03 KA06 KB00 3J036 AA06 BA02 BB09 GA04 4E050 DA10

Claims (4)

[Claims] 1. A cam unit comprising a cam base, a cam slider provided on the cam base, and a cam driver for moving the cam slider, wherein the cam base or the cam driver is positioned on a fixed mold or a movable mold by a reamer bolt. The cam unit is to be fastened. 2. The cam unit according to claim 1, wherein the reamer bolt comprises a fastening bolt and a knock pin having a through hole for loosely fitting the bolt. 3. The knock pin is provided at one end of the through hole.
The cam unit according to claim 2, wherein a screw portion for pulling out is formed by engraving. 4. A reamer bolt comprising: a fastening bolt; and a knock pin having a through hole through which the bolt is loosely fitted.