JP2002126832A - Cam die for pressing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cam die for pressing excellent in resolving and assembling, capable of fixing the working tools to a cam slide in an untouched condition without removing the working tools after the positioning, and capable of easily detaching the cam slide from a cam guide. SOLUTION: The cam die for pressing 1 comprises a cam guide 2, a guide bar 3 mounted on the cam guide 2, a cam slide 7 having a fixed surface 6 to fix a piercing punch 4 through a tool fixing means 5 since shifts to the A direction are being guided in the guide bar 3 and the cam guide 2, an energizing means 8 to energize the cam slide 7 against the initial position, a cam driver 9 to transfer the cam slide 7 toward the operating position in the teeth of an energizing power of the energizing means 8 by abutting the cam slide 7, an end portion fixing means 11 to fix freely detachably an end portion 10 of the guide bar 3 positioned in the side of the fixing surface 6 of the cam slide 7 into the cam guide 2 regarding the transfer direction A of the cam slide 7, and the other end portion fixing means 13 to fix the other end portion 12 of the guide bar 3 into the cam guide 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing machine which uses a cam having an inclined cam surface to apply a pressing force in one direction, such as downward, to a press machine, and to apply a pressing force in another direction, such as a horizontal direction intersecting with the pressing machine. The present invention relates to a cam die for press for performing processing such as drilling, shearing and bending.

[0002]

In this type of press cam mold, in which the movement of the cam slide is guided by a cam guide and a guide bar, a pierce punch normally attached to the cam slide is usually used for assembling the press cam mold. After the positioning of the processing tool such as, the cam slide and the processing tool are once removed from the cam guide, a knock hole is drilled in the cam slide, and a knock pin or the like is driven into the knock hole, so that the processing tool is finally positioned at the position where the cam slide is positioned. Fixed.

In such a press cam mold, when the guide bar is fixedly mounted on the cam guide via a screw (bolt), the screw is loosened to release the fixation of the guide bar to the cam guide. Then, after that, the cam slide must be removed from the cam guide.However, when the processing tool after positioning is mounted on the cam slide, the processing tool and the mounting tool for mounting this processing tool on the cam slide are required. A tool mounting tool or the like hinders the operation of loosening a screw by a driver, which is extremely troublesome, and the cam slide cannot be easily removed from the cam guide.

If the working tool is removed from the cam slide before the work of removing the cam slide from the cam guide, complicated work such as scoring the position of the working tool with respect to the cam slide in advance is required. An error may occur due to the scoring, and if the scoring is not performed accurately, the positioning operation may be wasted.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to easily remove a cam slide from a cam guide, and to remove a machining tool after positioning from the cam slide. It is an object of the present invention to provide a press cam mold having excellent disassembly and assemblability, in which a working tool can be fixed to a cam slide without any change.

[0006]

According to a first aspect of the present invention, there is provided a press cam mold, a cam guide, a guide bar provided on the cam guide, and a guide guided by the guide bar and the cam guide. A cam slide having a mounting surface on which a machining tool is mounted, an urging means for urging the cam slide toward an initial position, and an urging force of the urging means in contact with the cam slide and urging the cam slide. A cam driver that moves toward the operation position against the cam slide, and one end fixing means that fixes one end of the guide bar located on the mounting surface side of the cam slide to the cam guide so as to be freely inserted and removed in the moving direction of the cam slide. I have it.

According to the first aspect of the pressing cam mold, the one end fixing means fixes the one end of the guide bar to the cam guide so as to be freely inserted and withdrawn in the moving direction of the cam slide. When removing (disassembling) the cam slide from the guide, one end of the guide bar may be withdrawn from the one end fixing means, and when attaching (assembling) the cam slide to the cam guide, the guide bar is connected to the one end fixing means. Of the cam slide, it is easy to remove the cam slide from the cam guide, and there is no need to remove the machining tool after positioning from the cam slide. The processing tool can be fixed to the cam slide as it is.

Preferably, the one end fixing means is provided with a recess provided in the cam guide so as to receive one end of the guide bar, as in the press cam mold of the second aspect of the present invention. A closing plate fixed to the cam guide so as to close the opening end face of the recess, but instead of such one end fixing means, the cam guide is adapted to receive one end of the guide bar. The fixing means may be provided with a through hole or a bottomed hole provided by drilling from the moving direction of the cam slide, and when the one end fixing means is formed of such a through hole or a bottomed hole, the closing plate is closed. Can be omitted.

According to a third aspect of the present invention, there is provided a press cam mold according to the second aspect, wherein one end of the guide bar is rectangular in cross section, and the recess is a guide bar having this rectangular cross section. Has a shape complementary to one end of the guide bar so as to receive one end of the guide bar without a gap.

[0010] According to the third aspect of the pressing cam die, even at one end of the guide bar, rotation of the guide bar about its axis can be prevented.

In the press cam mold according to the fourth aspect of the present invention, in the press cam mold according to the second or third aspect, the closing plate is fixed to the cam guide by a screw at a position straddling the recess. I have.

According to a fifth aspect of the present invention, there is provided a press cam mold,
The press cam mold according to any one of the first to fourth aspects, further comprising another end fixing means for fixing the other end of the guide bar to the cam guide, wherein the other end fixing means comprises:
When the guide bar is released from being fixed to the other end, the guide bar can be freely moved in the moving direction of the cam slide, and the guide bar can be detached from the cam guide in the direction perpendicular to the moving direction of the cam slide. ing.

In the press cam mold according to a sixth aspect of the present invention, in the press cam mold according to the fifth aspect, the other end fixing means includes an end face of a cam guide with which the other end of the guide bar contacts, A screw threaded through the other end of the guide bar and the end face of the cam guide and screwed to the cam guide.

In the press cam mold according to a seventh aspect of the present invention, in the press cam mold according to any one of the first to sixth aspects, the cam guide comprises: a base; A front wall portion and a rear wall portion formed as described above, the guide bar is provided between the front wall portion and the rear wall portion, and the biasing means movably moves the cam slide. A penetrating rod-like member, a spring receiving member attached to one end of the rod-like member and freely abutting against the front wall of the cam guide, and surrounding the rod-like member, and between the spring receiving member and the cam slide. And a flange member attached to the other end of the rod-shaped member and for preventing the rod-shaped member from slipping out of the cam slide. The wall and the flange member facing the rear wall Between the end face, as a gap is formed about the moving direction of the cam slide, it is disposed between the front wall and the rear wall portion.

Hereinafter, the present invention and its embodiments will be described based on preferred examples shown in the drawings. It should be noted that the present invention is not limited to these examples.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 3, a press cam die 1 according to the present embodiment includes a cam guide 2, a guide bar 3 provided on the cam guide 2, a guide bar 3 and a cam guide 2.
In addition to guiding the movement in the direction A,
A cam slide 7 having a mounting surface 6 to which a piercing punch 4 as a processing tool is attached via a tool mounting tool 5; and a biasing means 8 for biasing the cam slide 7 toward an initial position (the position in FIG. 1). A cam driver 9 for contacting the cam slide 7 and moving the cam slide 7 toward the operating position (the position in FIG. 4) against the urging force of the urging means 8; One end 1 of the guide bar 3 located
0 is fixed to the cam guide 2 so as to be freely inserted and removed in the moving direction A of the cam slide 7, and the other end fixing means 13 is fixed to the other end 12 of the guide bar 3 to the cam guide 2. are doing.

The cam guide 2 includes a base 21, a front wall 22 and a rear wall 23 integrally formed on both ends of the base 21 and facing each other, and a wear fixed to the base 21 by screws 24. Plate 25 and a base 2
The cam guide 2 is fixed to, for example, a lower die of a press by screws or the like inserted into the through holes 26 and 27 formed in 1.

The guide bar 3 has one end 10 having a rectangular cross section.
And the other end portion 12 having a rectangular cross section and a columnar portion 31 having a circular cross section located between the one end portion 10 and the other end portion 12. Bush bearings 33 and 34, which preferably have a solid lubricant embedded therein, are fixed to the cam slide 7 between the cylindrical portion 31 of the guide bar 3 and the cam slide 7 in the through hole 32. Is provided.

The cam slide 7 movably disposed in the direction A on the base 21 of the cam guide 2 has a main body 43 having recesses 41 and 42 in addition to the mounting surface 6 and the through hole 32, A wear plate 44 is attached to the lower surface by a screw or the like, and slidably contacts the wear plate 25 in the direction A. A wear plate 44 is attached to the inclined surface 45 of the main body 43 by a screw or the like to form a cam surface 47. 46.

The urging means 8 includes a columnar rod-shaped member 51 which movably penetrates the main body 43 of the cam slide 7 in the direction A through the recesses 41 and 42, and one end 52 of the rod-shaped member 51.
And a spring receiving member 54 which is attached to the front wall portion 22 of the cam guide 2 and which can freely contact the front wall portion 22 of the cam guide 2, surrounds the rod-shaped member 51, and forms the cam slide 7 in the spring receiving member 54 and the recess 41. A coil spring 55 mounted between the main bodies 43 to generate an elastic force as an urging force
And a flange member 57 integrally attached to the other end portion 56 of the rod-shaped member 51 for preventing the rod-shaped member 51 from slipping out of the main body 43, and a ring made of a rubber material attached to the other end portion 56. The urging means 8 is provided between the rear wall 23 of the cam guide 2 and the end face 59 of the flange member 57 facing the rear wall 23.
The cam slide 7 is disposed between the front wall portion 22 and the rear wall portion 23 such that a gap 60 in the moving direction A is generated.

The cam driver 9 is attached to a main body 62 having a bifurcated shape so that a lower portion 61 straddles the guide bar 3, and is attached to an inclined surface 63 of the main body 62 by a screw or the like. A sliding wear plate 64 and a main body 62 flush with the outer surface of the wear plate 64
The cam surface 67 includes an outer surface of the wear plate 64 and the sliding surface 68,
The cam driver 9 is fixed to, for example, an upper die of a press by screws or the like inserted into through holes 65 and 66 formed in the main body 62.

The cam driver 9 moves the cam slide 7 through the wear plates 64 and 46 which come into surface contact with each other on the cam surfaces 67 and 47 by the movement in the direction B perpendicular to the direction A.
Is moved in the direction A on the base 21 of the cam guide 2 together with the guidance by the cam guide 2 and the guide bar 3.

The one end fixing means 11 is adapted to receive one end 10 of the guide bar 3 so as to receive the one end 10 of the guide bar 3.
And a closing plate 74 fixed to the front wall 22 of the cam guide 2 with screws 72 and 73 so as to close the upper opening end face of the recess 71. The recess 71 has a shape complementary to the one end 10 of the guide bar 3 so as to receive the one end 10 of the guide bar 3 having a rectangular cross section without any gap. The cam guide 2 is fixed to the front wall portion 22 of the cam guide 2 by screws 72 and 73 at the position where the cam guide 2 extends.

The other end fixing means 13 is provided on the end face 8 of the rear wall 23 of the cam guide 2 which defines a recess 83 in which the other end 12 of the guide bar 3 is in contact and the other end 12 is fitted.
1 and a screw 82 that passes through the other end 12 of the guide bar 3 and the end face 81 of the rear wall 23 and is screwed to the rear wall 23 of the cam guide 2. When the guide bar 3 is released from the rear portion 23 of the cam guide 2 in the direction B perpendicular to the moving direction A of the cam slide 7, the guide bar 3 is moved freely in the moving direction A of the cam slide 7. Can be removed.

In this embodiment, as is clear from FIGS. 2 and 3, the cam guide 2, the cam slide 7 and the cam driver 9 are all formed to have the same lateral width.

In the above-described press cam mold 1, in the initial position, the cam driver 9 fixed to the upper mold is located at an upper position as shown in FIG. 1, and the cam slide 7 has the elasticity of the coil spring 55 as an urging force. The cam driver 9 is located on the left side of the base 21 of the cam guide 2 fixed to the lower die by extension force. The outer surface of the plate 64 is lowered while slidingly contacting the wear plate 46 of the cam slide 7. When the cam driver 9 descends, the cam slide 7 is pressed against the wear plate 46 by the wear plate 64 of the cam driver 9 and moves forward in the direction A, that is, toward the operating position shown in FIG.
Is moved while pressing. During this movement, the wear plate 44 is in sliding contact with the wear plate 25, and the inner surfaces of the bush bearings 33 and 34 are in contact with the cylindrical portion 3 of the guide bar 3.
As a result, the cam slide 7 is guided by the cam guide 2 and the guide bar 3 and is moved toward the operating position shown in FIG. The workpiece is processed by the piercing punch 4 by the forward operation of the cam slide 7.

Thereafter, when the cam driver 9 is moved upward together with the operation of the ram of the press machine, the cam slide 7 is moved.
Is returned to the initial position by the elastic stretching force of the coil spring 55, and is then advanced again by the lowering of the cam driver 9.

When the cam slide 7 is removed (disassembled) from the cam guide 2 at the initial position, the pierce punch is mounted above the screws 72 and 73 as shown in FIGS. 4 and the tool fixture 5 are located, and it is difficult to loosen the screws 72 and 73 with a screwdriver, but the one end fixing means 11 allows the one end 10 of the guide bar 3 to be inserted and removed in the moving direction A of the cam slide 7. Since it is fixed to the front wall 22 of the guide 2, the screw 82 is loosened and removed, and the other end 12 of the guide bar 3 is fixed by the other end fixing means 13 without particularly loosening the screws 72 and 73. Is released, the one end 10 of the guide bar 3 can be pulled out from the recess 71 of the one end fixing means 11 in the direction A, and one end of the guide bar 3 is inserted into the recess 71 of the one end fixing means 11. By inserting the part 10, the cam slide 7 can be attached (assembled) to the cam guide 2, so that the cam slide 7 can be easily removed from the cam guide 2, and after the positioning. There is no need to remove the pierce punch 4 and the tool fixture 5 from the cam slide 7, and the pierce punch 4 can be finally fixed to the cam slide 7 by knocking the cam slide 7 as it is, and has excellent disassembly and assemblability.

[0029]

According to the present invention, the cam slide can be easily removed from the cam guide, and there is no need to remove the working tool after positioning from the cam slide, and the working tool is fixed to the cam slide as it is. Can, decompose,
A press cam mold having excellent assemblability can be provided.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a preferred example of the present invention.

FIG. 2 is a right side view of the example shown in FIG.

FIG. 3 is a left side view of the example shown in FIG. 1;

FIG. 4 is an operation explanatory diagram of the example shown in FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 cam type for press 2 cam guide 3 guide bar 7 cam slide 8 biasing means 9 cam driver 10 one end 11 one end fixing means

Claims (7)

[Claims] 1. A cam guide, a guide bar provided on the cam guide, and a cam slide having a mounting surface on which a movement is guided by the guide bar and the cam guide and on which a machining tool is mounted. A biasing means for biasing the cam slide toward the initial position, a cam driver for contacting the cam slide and moving the cam slide toward the operating position against the biasing force of the biasing means, and a cam slide. A press cam mold comprising: a first end fixing means for fixing one end of a guide bar located on the mounting surface side to a cam guide so as to be freely inserted and withdrawn in a moving direction of a cam slide. 2. An end fixing means includes a recess provided in the cam guide so as to receive one end of the guide bar, and a closure fixed to the cam guide so as to close an opening end surface of the recess. The cam die for press according to claim 1, comprising a plate. 3. One end of the guide bar has a rectangular cross section, and the recess has a shape complementary to one end of the guide bar so as to receive one end of the rectangular guide bar without any gap. The press cam mold according to claim 2, further comprising: 4. The closing plate is fixed to the cam guide by a screw at a position straddling the recess.
The cam type for press described in 1. 5. An end fixing means for fixing the other end of the guide bar to the cam guide, wherein the other end fixing means releases the cam when the fixing of the guide bar to the other end is released. The press according to any one of claims 1 to 4, wherein the press bar is movable with respect to the slide moving direction, and the guide bar can be detached from the cam guide in a direction orthogonal to the cam slide moving direction. For cam type. 6. The other end fixing means includes an end face of a cam guide with which the other end of the guide bar abuts, and a screw that passes through the other end of the guide bar and the end face of the cam guide and is screwed to the cam guide. The press cam die according to claim 5, comprising: 7. The cam guide includes a base, a front wall and a rear wall formed integrally with the base and facing each other, and the guide bar includes a front wall and a rear wall. The urging means is mounted on one end of the rod-shaped member movably penetrating the cam slide, and is freely contactable with the front wall of the cam guide. And a coil spring that surrounds the rod-shaped member, is mounted between the spring-receiving member and the cam slide, and is attached to the other end of the rod-shaped member, and the rod-shaped member comes out of the cam slide. And a biasing means for providing a gap between the rear wall of the cam guide and the end surface of the flange facing the rear wall in the moving direction of the cam slide. Between the front and rear walls. The press cam die according to any one of claims 1 to 6, wherein the press cam die is formed.