JP2000024858A - Clamp mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set a clamping member in a short time without taking time for setting consequent to the change of a workpiece and to facilitate control of the clamping member without becoming complicated. SOLUTION: This clamping device 20A clamps a workpiece by a fixed side clamping member 25 fitted to a base 22, and a moving side clamping member 25 movably fitted to the base 22. In this case, at least one of the fixed side clamping member 23 and the moving side clamping member 25 is dividedly composed of a fixed part 31 and a clamping piece 32 directly abutting the workpiece 1, and the clamping piece 32 is slidably fitted to the fixed part 31 so as to be able to change clamping thickness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a clamp mechanism for clamping a work in an assembling process.

[0002]

2. Description of the Related Art Conventionally, in the process of assembling a vehicle body,
For the side body and the like, an inner panel and an outer panel are formed in advance, and these panels are welded together and assembled. When welding these panels together, a clamp mechanism having a shape suitable for each panel is used.
For this reason, the clamp mechanism is dedicated for some models,
A new clamping mechanism is required every time a model or design is changed. However, this only increases the number of clamp mechanisms and complicates the management of the clamp mechanisms. Further, if the clamp mechanism is replaced with a dedicated one every time the model or the design is changed, productivity may be deteriorated.

[0003] As a clamp mechanism that solves these problems, for example, Japanese Patent Application Laid-Open No. 62-157743 discloses a "clamp device". The above technology is disclosed in
As shown in the drawing, a holder portion 18A is formed on the body portion 14A side, and a clamp member 24A is detachably attached to the holder portion 18A, while a holder portion 16A is formed on the moving side, and a clamp is provided on the holder portion 16A. This is a clamp mechanism to which the member 22A is detachably attached. That is, the clamp member 22A and the clamp member 24
A can be exchanged.

[0004]

However, the above technique is
Hold the clamp members 22A and 24A at the time of model change
6A and 18A, and the replacement work is still troublesome because another clamp member is attached.
It takes time to exchange 2A and 24A, and it is not possible to improve productivity. In addition, the removed clamp members 22A,
24A must be stored after specifying the type of use and the mounting position, and the management of the clamp members 22A and 24A is complicated, and may be erroneously mounted.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a clamp mechanism which can easily manage the clamp members without troublesome handling of the clamp members when the model is changed.

[0006]

According to one aspect of the present invention, there is provided a clamp for clamping a workpiece between a fixed clamp member attached to a base table and a movable clamp member movably attached to the base table. In the mechanism, at least one of the fixed-side clamp member and the movable-side clamp member is divided into a fixed portion and a clamp piece directly applied to the workpiece, and the clamp piece is slidable so that the clamp thickness can be changed. It is characterized in that it is attached to a fixed part.

[0007] The clamp piece is moved in accordance with the thickness of the work so that different works can be sandwiched. Then, the work is sandwiched between the fixed-side clamp member and the movable-side clamp member.

[0008] A second aspect of the present invention is characterized in that a stopper for regulating the sliding range of the clamp piece is provided on the fixed portion.
The position of the clamp piece is set by applying the clamp piece to one of the stoppers.

According to a third aspect of the present invention, a stopper is provided on the clamp piece to regulate a sliding range. The position of the clamp piece is set by moving the clamp piece to one stopper.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a perspective view of a side body assembled by a work positioning device constituted by a clamp mechanism according to the present invention. The side body 1 as a work includes an inner panel 2 and an outer panel 3 attached to the inner panel 2. Reference numeral 4 denotes a center pillar, 5 denotes a front pillar, 6 denotes a side sill, 7 denotes a side rail, 8 denotes a quarter panel, and 9 denotes a roof.

FIG. 2 is a perspective view of a work positioning device constituted by a clamp mechanism according to the present invention. The work positioning device 10 includes a support base 11, positioning pins 12 mounted on the support base 11, guide pins 13 mounted on the support base 11, and clamp mechanisms 20A to 2 mounted on the support base 11.
0F, the work 1 is positioned by the positioning pins 12 and the guide pins 13, and the clamp mechanisms 20A to 20
This device is used to weld the outer panel 3 to the inner panel 2 by sandwiching the outer panel 3 with the inner panel 2. The clamp mechanism 20A
20F to 20F are mechanisms having substantially the same configuration. The clamp mechanism 20A will be described with reference to FIGS.
The description of B to 20F is omitted.

FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2, and shows a side view of the clamp mechanism 20A of the first embodiment. Clamp mechanism 2
Reference numeral 0A denotes a support stay 22 as a base table attached to the support column 21, a fixed clamp member 23 attached to the support stay 22, and a movable clamp member 25 rotatably attached to the support stay 22 via a pin 24. And a cylinder 27 swingably attached to the support stay 22 via a pin 26 to move the movable side clamp member 25.
And a pin 28 for connecting the moving-side clamp member 25 and a tip portion 27c described later. 27a is a cylinder rod, 27b and 27b (the back side 27b is not shown) are cylinder attachment parts, and 27c is a tip attached to the tip of the rod 27a.

FIG. 4 is an exploded perspective view of the clamp mechanism according to the first embodiment of the present invention. Specifically, the column 21 includes a support portion 21a attached to the support base 11 (see FIG. 2) and a support surface 21b formed on the support portion 21a. The support stay 22 includes a mounting portion 22a for mounting on the support surface 21b of the support column 21, a cylinder support portion 22b for supporting the mounting portions 27b, 27b of the cylinder 27, a clamp support surface 22c for supporting the fixed-side clamp member 23, and a fixed portion. A positioning portion 22d for positioning the side clamp member 23, a screw mounting hole 22e formed in the clamp support surface 22c, and a guide portion 22 formed on both sides of the clamper support surface 22c.
f, 22f, and support holes 22g, 22g of the pin 24 formed in the guide portions 22f, 22f, respectively. 29, 29 are mounting screws for mounting the mounting portion 22a to the support surface 21b.

The fixed-side clamp member 23 includes a clamp base 31 as a fixed portion, a clamp piece 32 slidably mounted on the clamp base 31 so that the clamp thickness can be changed, and one end of the clamp piece 32. Shim 33 and shim 3 attached to the other end of clamp piece 32.
4 36 are mounting screws for mounting the clamp base 31 on the clamp supporting surface 22c of the support stay 22;
7 is a mounting screw for slidably mounting the clamp piece 32 to the clamp base 31, 38 is a mounting screw for mounting the shim 33 to the clamp piece 32, 39 is a mounting screw for mounting the shim 34 to the clamp piece 32, and 33a is formed on the shim 33. The mounting holes 34a are mounting holes formed in the shim 34.

The clamp base 31 has a support surface 31a for supporting the clamp piece 32, a screw through hole 31b for a mounting screw 36 formed on the support surface 31a, and a screw mounting hole 31c for a mounting screw 37 formed on the support surface 31a. Upper and lower stoppers 31d and 31e as stoppers formed at both ends of the support surface 31a; guides 31f and 31f formed on both sides of the support surface 31a;
And an abutment surface 31g to which the contact is applied.

The clamp piece 32 has a mounting portion 32a for mounting on the support surface 31a of the clamp base 31, a slide hole 32b formed in the mounting portion 32a, a mounting surface 32c for mounting the shim 33, and a mounting surface 32d for mounting the shim 34. And a clamp surface 32e for clamping the side body 1 (see FIG. 2).

The moving-side clamp member 25 includes a support stay 2.
2, a fitting portion 25b fitted to the tip portion 27c of the rod 27a, and a clamp base 3
1 is formed with a contact portion 25c for contacting the contact portion 31g and a clamp surface 25d for clamping the side body 1.

The operation of the above-described clamp mechanism 20A will now be described. FIGS. 5A and 5B show the first embodiment according to the present invention.
FIG. 4 is a first operation explanatory view of the clamp mechanism of the embodiment. (A)
In, the outer panel 3 is put on the inner panel 2 and moves to the clamp mechanism 20A as indicated by an arrow. The clamp mechanism 20A operates the cylinder 27 to operate the rod 2
7a is returned, and the movable-side clamp member 25 is set in an open state in advance. t1 indicates the thickness of the side body 1. In (b), the cylinder 27 is operated, and the movable side clamp member 2 is moved.
5 is rotated as shown by the arrow.

FIGS. 6A and 6B are views for explaining a second operation of the clamp mechanism according to the first embodiment of the present invention. 1A, a side body 1 is formed by a clamp surface 32e of a clamp piece 32 and a clamp surface 25d of a movable clamp member 25.
In between. The moving-side clamp member 25 includes a contact portion 25c.
Contacts the contact portion 31g of the clamp base 31, and the contact portion 3
Since 1 g serves as a stopper for the moving-side clamp member 25,
When the side body 1 is sandwiched, there is no possibility that an excessive clamping force is applied to the side body 1. In (b),
For example, a work sandwiched between the clamp mechanisms 20A is (a)
When the side body 1 having the thickness t1 shown in FIG. 2 is changed to the side body 1A having the thickness t2 shown in FIG. 2B (t2 <t1), first, the mounting screw 37 is loosened.

FIGS. 7A and 7B are views for explaining the third operation of the clamp mechanism according to the first embodiment of the present invention. In (a), the clamp piece 32 is moved as shown by the arrow, and the shim 3 is moved.
The three surfaces abut against the upper stopper 31d surface, and the mounting screws 37
Tighten. That is, the fixed-side clamp member 23 is composed of a clamp base 31 and a clamp piece 32 slidably attached to the clamp base 31 so that the clamp thickness can be changed, and the side body 1 (FIG. 6A)
The clamp piece 32 is moved relative to the clamp base 31 according to the thickness t1 of the side body 1A or the thickness t2 of the side body 1A so that the side bodies 1 and 1A having different thicknesses t1 and t2 can be sandwiched.

6B, the clamp piece 32 is configured to abut the upper stopper 31d via the shim 33 and to the lower stopper 31e via the shim 34, so that the side body 1 (FIG. 6 (a) If the thickness t1 of the side body 1A) and the thickness t2 of the side body 1A vary, it can be easily dealt with by replacing the shim with another shim having a different thickness. In addition, the clamp piece 32 is
1d, the lower stopper 31e and the shim 34
And a gap S is generated between them. A new shim 4 in this gap S
If 1 is inserted, it will also be a safety measure when the mounting screw 37 is loosened.

FIG. 8 is a side view of a clamp mechanism according to a second embodiment of the present invention. The same parts as those of the clamp mechanism 20A shown in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The clamp mechanism 50 includes the support 21
A support stay 52 as a base table attached to the support stay 52; a fixed clamp member 53 attached to the support stay 52; a movable clamp member 55 rotatably attached to the support stay 52 via the pin 24; Clamp member 55
The cylinder 27 is swingably attached to the support stay 52 via the pin 26 in order to move the rod 27a, and the pin 28 connects the movable clamp member 55 and the tip 27c of the rod 27a.

The fixed side clamp member 53 is attached to one end of the clamp base 61, a clamp piece 62 slidably attached to the clamp base 61 so that the clamp thickness can be changed, and one end of the clamp base 61. It comprises a shim 63 and a shim 64 attached to the other end of the clamp base 61. Reference numeral 67 denotes an attachment screw for attaching the clamp piece 62 to the clamp base 61.

The clamp base 61 includes a support stay 52.
And has a supporting portion 61a for supporting the clamp piece 62 and a contact surface 61b for contacting the moving-side clamp member 55. The clamp piece 62 is attached to a support portion 61 a of the clamp base 61.
2a and a slide hole 62 formed in the mounting portion 62a.
b, an upper stopper 62d formed at one end of the mounting portion 62a, a lower stopper 62e formed at the other end of the mounting portion 62a, and a clamp surface 62f for clamping the side body 1 (see FIG. 2).

The movable side clamp member 55 includes a support stay 5
2, a fitting portion 55b fitted to the rod 27a of the cylinder 27, and a clamp base 6
A contact portion 55c for contacting the first contact portion 61b and a clamp surface 55d for clamping the side body 1 are formed. That is, the clamp mechanism 50 includes the clamp pieces 62.
Are provided with upper and lower stoppers 62d and 62e.

FIG. 9 is a side view of a clamp mechanism according to a third embodiment of the present invention. Note that the same parts as those of the clamp mechanism 50 shown in the second embodiment are denoted by the same reference numerals, and detailed description is omitted. The clamp mechanism 70 includes a support stay 52 as a base table attached to the support 21, a fixed clamp member 53 attached to the support stay 52, and a movable clamp rotatably attached to the support stay 52 via the pin 24. A member 75, a cylinder 27 swingably attached to the support stay 52 via a pin 26 to move the moving-side clamp member 75, and a pin connecting the moving-side clamp member 75 and the tip 27c of the rod 27a. 28.

The movable side clamp member 75 is attached to one end of the clamp base 81 as a fixed portion, a clamp piece 82 slidably attached to the clamp base 81 so that the clamp thickness can be changed, and one end of the clamp base 81. It comprises a shim 83 and a shim 84 attached to the other end of the clamp base 81.

The clamp base 81 includes a fitting portion 81a fitted to the support stay 52 and a rod 27a of the cylinder 27.
And a support portion 81c that supports the clamp piece 82, and a contact surface 81d that contacts the contact surface 61b of the clamp base 61 that is a component of the fixed-side clamp member 53. is there. The clamp piece 82
A mounting portion 82a for mounting to the support portion 81c of the clamp base 81, and a slide hole 8 formed in the mounting portion 82a
2b, an upper stopper 82d formed at one end of the mounting portion 82a, a lower stopper 82e formed at the other end of the mounting portion 82a, and a clamp surface 82f for clamping the side body 1 (see FIG. 2). Reference numeral 87 denotes an attachment screw for attaching the clamp piece 82 to the clamp base 81.

That is, in the clamp mechanism 70, both the fixed-side clamp member 53 and the movable-side clamp member 75 can change the clamp thickness. Therefore, the range of the clamp thickness that can be adjusted is expanded, and the number of adaptable side bodies 1 (see FIG. 2) can be increased.

In the third embodiment shown in FIG. 9, both the fixed-side clamp member 53 and the movable-side clamp member 75 are fixed to the clamp bases 61, 81, and are slid on the fixed portions 61, 81. Possible clamp pieces 6
2 and 82, only the moving-side clamp member 75 is composed of the fixing portion 81 and the clamp piece 82, and the fixing portion 81
The clamp piece 82 may be slidably attached so that the clamp thickness can be changed.

[0031]

According to the present invention, the following effects are exhibited by the above configuration. According to the first aspect, at least one of the fixed-side clamp member and the movable-side clamp member is constituted by a fixed portion and a clamp piece slidably attached to the fixed portion so that the clamp thickness can be changed. Depending on the thickness, the clamp piece can be moved in the clamp direction with respect to the fixed portion to sandwich different works. Therefore,
The setting can be performed in a short time without troublesome setting of the clamp member when the work is changed. Further, the management of the clamp member does not become complicated, and the management of the clamp member can be facilitated.

According to the second aspect of the present invention, since the stopper for restricting the sliding range of the clamp piece is provided in the fixed portion, the position of the clamp piece can be set by applying the clamp piece to one of the stoppers. Therefore, by setting the clamp piece on one of the stoppers, it is possible to easily cope with two types of works having different thicknesses.

According to the third aspect of the present invention, since the stopper for restricting the slide range is provided on the clamp piece, the position of the clamp piece can be set by moving the clamp piece to one of the stoppers. Therefore, by setting the clamp piece on one of the stoppers, it is possible to easily cope with two types of works having different thicknesses.

[Brief description of the drawings]

FIG. 1 is a perspective view of a side body assembled by a work positioning device constituted by a clamp mechanism according to the present invention.

FIG. 2 is a perspective view of a work positioning device constituted by a clamp mechanism according to the present invention.

FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2;

FIG. 4 is an exploded perspective view of the clamp mechanism according to the first embodiment of the present invention.

FIG. 5 shows a first example of the clamp mechanism according to the first embodiment of the present invention.
Action explanation diagram

FIG. 6 shows a second embodiment of the clamp mechanism according to the first embodiment of the present invention.
Action explanation diagram

FIG. 7 shows a third embodiment of the clamp mechanism according to the first embodiment of the present invention.
Action explanation diagram

FIG. 8 is a side view of a clamp mechanism according to a second embodiment of the present invention.

FIG. 9 is a side view of a clamp mechanism according to a third embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Work (side body), 20A, 50, 70 ... Clamp mechanism, 22, 52 ... Base stand (support stay), 2
3, 53: fixed clamp member, 25, 55, 75: movable clamp member, 31, 61, 81: fixed portion (clamp base), 31d, 31e: stopper (upper / lower stopper), 32, 62, 82 ... Clamp pieces, 62d and 62e
... Stoppers (upper / lower stoppers), 82d, 82e ... Stoppers (upper / lower stoppers).

Continuation of the front page (72) Inventor Satoshi Endo 1-10-1 Shinsayama, Sayama City, Saitama Prefecture Honda Engineering Co., Ltd. F term (reference) 3C016 CC02

Claims (3)

[Claims] 1. A clamp mechanism for clamping a work between a fixed-side clamp member attached to a base table and a movable-side clamp member movably attached to the base table, wherein at least one of the fixed-side clamp member and the movable-side clamp member A clamp mechanism, wherein one side is divided into a fixed portion and a clamp piece directly applied to a workpiece, and the clamp piece is slidably attached to the fixed portion so that the clamp thickness can be changed. 2. The fixing device according to claim 1, wherein a stopper for restricting a sliding range of the clamp piece is provided on the fixing portion.
The described clamping mechanism. 3. The clamp mechanism according to claim 1, wherein a stopper for restricting a slide range is provided on the clamp piece.