JP3843725B2 - Cam type for press - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention uses a cam having a slanted cam surface to change the pressing force in one direction such as downward of the press machine into the pressing force in the other direction such as lateral direction intersecting with this, The present invention relates to a press cam mold for processing such as shearing and bending.
[0002]
[Problems to be solved by the invention]
In this type of press cam type in which the movement of the cam slide is guided by a cam guide and a guide bar, the cam slide is usually positioned after the positioning of a processing tool such as a pierce punch attached to the cam slide. The machining tool is 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 machining tool is finally fixed to the position where the cam slide is positioned.
[0003]
In such a press cam type, when the guide bar is fixed to the cam guide via a screw (bolt) and installed, the screw is loosened to release the guide bar from being fixed to the cam guide. Later, the cam slide must be removed from the cam guide, but in the state that the machining tool after positioning is attached to the cam slide, the machining tool and a tool mounting tool for attaching the machining tool to the cam slide. The screw loosening work by the screwdriver becomes extremely troublesome, and the cam slide cannot be easily removed from the cam guide.
[0004]
If the machining tool is removed from the cam slide before the cam slide is removed from the cam guide, a complicated work such as marking the position of the machining tool relative to the cam slide is required. There is a possibility that an error occurs due to the writing, and there is a possibility that the positioning operation is wasted if this ruled line is not made accurately.
[0005]
The present invention has been made in view of the above points, and the purpose thereof is to easily remove the cam slide from the cam guide, and it is not necessary to remove the positioning processing tool from the cam slide. An object of the present invention is to provide a press cam mold that can fix a machining tool to a cam slide as it is and has excellent disassembly and assembly.
[0006]
[Means for Solving the Problems]
The press cam mold according to the first aspect of the present invention comprises a cam guide, a guide bar installed on the cam guide, movement guided by the guide bar and the cam guide, and a machining tool. A cam slide having a mounting surface to be attached, an urging means for urging the cam slide toward the initial position, and the cam slide against the urging force of the urging means in contact with the cam slide toward the operating position A cam driver to be moved, and one end fixing means for fixing one end of a guide bar located on the mounting surface side of the cam slide to the cam guide so as to be freely inserted and removed with respect to the moving direction of the cam slide.
[0007]
According to the press cam mold of the first aspect, the one end fixing means fixes the one end of the guide bar to the cam guide so that it can be freely inserted and removed with respect to the moving direction of the cam slide. When removing (disassembling) the cam slide, one end of the guide bar may be removed from the one end fixing means. When attaching (assembling) the cam slide to the cam guide, one end of the guide bar is connected to the one end fixing means. Therefore, it is excellent in disassembly and assembly, and it is easy to remove the cam slide from the cam guide, and it is not necessary to remove the processing tool after positioning from the cam slide. Can fix the machining tool to the cam slide.
[0008]
The one-end fixing means preferably has a recess provided in the cam guide so as to receive one end of the guide bar, as in the press cam type of the second aspect of the present invention, and the recess A closing plate fixed to the cam guide so as to close the opening end face. Instead of the one end fixing means, the cam guide is configured to receive one end of the guide bar. The fixing means may be configured by including a through hole or a bottomed hole provided by drilling from the moving direction. When the one end fixing means is formed of such a through hole or a bottomed hole, the closing plate can be omitted.
[0009]
In the press cam mold according to the third aspect of the present invention, in the press cam mold according to the second aspect, one end of the guide bar is rectangular in cross section, and the recess is one end of the guide bar having the rectangular cross section. So that the guide bar is received without a gap.
[0010]
According to the press cam mold of the third aspect, rotation of the guide bar around its axis can be prevented even at one end of the guide bar.
[0011]
In the press cam mold of the fourth aspect of the present invention, in the press cam mold of the second or third aspect, the closing plate is fixed to the cam guide by a screw at a position straddling the recess.
[0012]
The press cam mold according to a fifth aspect of the present invention is the press cam mold according to any one of the first to fourth aspects, comprising other end fixing means for fixing the other end of the guide bar to the cam guide. In this case, the other end fixing means relates to the direction perpendicular to the moving direction of the cam slide while the guide bar is movable with respect to the moving direction of the cam slide in releasing the fixing to the other end of the guide bar. The guide bar can be removed from the cam guide.
[0013]
In the press cam mold according to the 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 the cam guide with which the other end of the guide bar abuts, and a guide bar And a screw threaded through the other end and the end face of the cam guide and screwed into the cam guide.
[0014]
The press cam mold according to the seventh aspect of the present invention is the press cam mold according to any one of the first to sixth aspects, wherein the cam guide is formed integrally with the base portion and facing each other. The guide bar is constructed between the front wall portion and the rear wall portion, and the urging means is a rod-like shape penetrating the cam slide. A member, and a spring receiving member that is attached to one end of the rod-shaped member and is capable of contacting the front wall portion of the cam guide, and surrounds the rod-shaped member, and is mounted between the spring receiving member and the cam slide. A coil spring and a flange member that is attached to the other end of the rod-shaped member and prevents the rod-shaped member from coming out of the cam slide, and the biasing means includes a rear wall portion of the cam guide, Between the end face of the flange member facing the rear wall , 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.
[0015]
Hereinafter, the present invention and its embodiments will be described based on preferred examples shown in the drawings. The present invention is not limited to these examples.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3, the press cam die 1 of this example is such that the cam guide 2, the guide bar 3 installed on the cam guide 2, and the movement in the A direction are guided to the guide bar 3 and the cam guide 2. And a cam slide 7 having a mounting surface 6 to which a piercing punch 4 as a processing tool is mounted via a tool mounting tool 5, and biasing the cam slide 7 toward an initial position (position in FIG. 1). An urging means 8 that makes contact with the cam slide 7, a cam driver 9 that moves the cam slide 7 toward the operating position (position in FIG. 4) against the urging force of the urging means 8, and the cam slide 7 One end fixing means 11 for fixing one end 10 of the guide bar 3 positioned on the mounting surface 6 side of the guide bar 3 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 12 of the guide bar 3 cam Fixed to guide 2 And includes the other end portion fixing means 13 that.
[0017]
The cam guide 2 includes a base 21, a front wall portion 22 and a rear wall portion 23 formed integrally with both ends of the base portion 21 so as to face each other, and a wear plate 25 fixed to the base portion 21 with screws 24. The cam guide 2 is fixed to, for example, a lower die of a press by screws or the like inserted into through holes 26 and 27 formed in the base portion 21.
[0018]
The guide bar 3 integrally includes one end portion 10 having a rectangular cross section, the other end portion 12 having a mountain-shaped cross section, and a circular column portion 31 having a circular cross section located between the one end portion 10 and the other end portion 12. And a bush bearing in which a solid lubricant is preferably embedded between the cylindrical portion 31 of the guide bar 3 and the cam slide 7 in the through hole 32. 33 and 34 are fixedly provided on the cam slide 7.
[0019]
A cam slide 7 disposed on the base 21 of the cam guide 2 so as to be movable in the A direction includes a main body 43 having recesses 41 and 42 in addition to the mounting surface 6 and the through hole 32, and a screw on the lower surface of the main body 43. A wear plate 44 that is slidably in contact with the wear plate 25 in the direction A, and a wear plate 46 that is attached to the inclined surface 45 of the main body 43 by screws or the like and constitutes the cam surface 47. It has.
[0020]
The urging means 8 is attached by a screw 53 to a columnar rod-like member 51 that passes through the recesses 41 and 42 and penetrates the main body 43 of the cam slide 7 in the direction A, and one end 52 of the rod-like member 51. In addition, the spring receiving member 54 that can come into contact with the front wall portion 22 of the cam guide 2 and the rod-shaped member 51 are enclosed, and is mounted between the spring receiving member 54 and the main body 43 of the cam slide 7 in the recess 41. Thus, the coil spring 55 that generates an elastic force as an urging force and the flange member 57 that is attached integrally to the other end portion 56 of the rod-shaped member 51 and prevents the rod-shaped member 51 from coming out of the main body 43. And an annular impact absorbing member 58 made of a rubber material attached to the other end portion 56, the biasing means 8 faces the rear wall portion 23 and the rear wall portion 23 of the cam guide 2.鍔 member 5 Between the end face 59 of the, as a gap 60 is produced on the movement direction A of the cam slide 7, it is arranged between the front wall 22 and rear wall 23.
[0021]
The cam driver 9 is attached to the main body 62 having a forked shape so that the lower part 61 straddles the guide bar 3 and the inclined surface 63 of the main body 62 by screws or the like, and is in contact with the cam surface 47 to slide. A wear plate 64, a sliding surface 68 of the body 62 flush with the outer surface of the wear plate 64, and the cam surface 67 includes the 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 inserted into through holes 65 and 66 formed in the main body 62.
[0022]
The cam driver 9 moves the cam slide 7 on the base 21 of the cam guide 2 via the wear plates 64 and 46 which are in surface contact with each other on the cam surfaces 67 and 47 by movement in the B direction orthogonal to the A direction. And it is moved in the A direction together with the guidance by the guide bar 3.
[0023]
The one end fixing means 11 closes the recess 71 having a rectangular cross section provided in the front wall portion 22 of the cam guide 2 and the upper opening end surface of the recess 71 so as to receive the one end 10 of the guide bar 3. In this way, the front wall portion 22 of the cam guide 2 is provided with a closing plate 74 fixed by screws 72 and 73, and the recess 71 receives the one end portion 10 of the guide bar 3 having a rectangular cross section without a gap. Thus, it has a shape complementary to the one end portion 10 of the guide bar 3, and the closing plate 74 is fixed to the front wall portion 22 of the cam guide 2 by screws 72 and 73 at a position straddling the recess 71. ing.
[0024]
The other end portion fixing means 13 includes an end surface 81 of the rear wall portion 23 of the cam guide 2 that defines the recess 83 with which the other end portion 12 of the guide bar 3 abuts and the other end portion 12 is fitted. A screw 82 that passes through the other end portion 12 of the bar 3 and the end surface 81 of the rear wall portion 23 and is screwed into the rear wall portion 23 of the cam guide 2 is fixed to the other end portion 12 of the guide bar 3. In the release, the guide bar 3 becomes movable in the moving direction A of the cam slide 7 and the other end portion of the guide bar 3 from the rear wall portion 23 of the cam guide 2 in the direction B perpendicular to the moving direction A of the cam slide 7. 12 can be removed.
[0025]
In this example, 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.
[0026]
In the press cam mold 1 described above, in the initial position, the cam driver 9 fixed to the upper mold is positioned upward as shown in FIG. 1, and the cam slide 7 is moved by the elastic extension force of the coil spring 55 as an urging force. The cam driver 9 is positioned on the left side of the base 21 of the cam guide 2 fixed to the lower die. The outer surface is lowered while being in sliding contact with the wear plate 46 of the cam slide 7. As the cam driver 9 descends, the cam slide 7 is moved while pressing the coil spring 55 forward in the direction A, that is, toward the operating position shown in FIG. 4 by the wear plate 46 being pressed by the wear plate 64 of the cam driver 9. Is done. 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 sliding contact with the surface of the cylindrical portion 31 of the guide bar 3, so that the cam slide 7 contacts the cam guide 2 and the guide bar 3. Guided and moved toward the operating position shown in FIG. The workpiece is processed by the piercing punch 4 by the forward movement of the cam slide 7.
[0027]
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 returned to the initial position by the elastic extension force of the coil spring 55, and then again when the cam driver 9 is lowered. Moved forward.
[0028]
In the press cam mold 1, when the cam slide 7 is removed (disassembled) from the cam guide 2 at the initial position, the pierce punch 4 and the tool above the screws 72 and 73 as shown in FIGS. 1 and 2. Although the fixture 5 is positioned and it is difficult to loosen the screws 72 and 73 with a screwdriver, the one end fixing means 11 can be inserted into and removed from the one end 10 of the guide bar 3 with respect to the moving direction A of the cam slide 7. Since the screws 72 and 73 are not particularly loosened because they are fixed to the front wall 22, the screws 82 are loosened and removed, and the other end 12 of the guide bar 3 is fixed by the other end fixing means 13. Later, the one end 10 of the guide bar 3 can be extracted in the A direction from the recess 71 of the one end fixing means 11, and the one end 10 of the guide bar 3 is inserted into the recess 71 of the one end fixing means 11. By doing so, the cam slide 7 can be attached (assembled) to the cam guide 2, and thus the cam slide 7 can be easily detached from the cam guide 2, and the pierce punch 4 after positioning and There is no need to remove the tool attachment 5 from the cam slide 7, and the piercing punch 4 can be finally fixed to the cam slide 7 by driving a knock pin or the like, and has excellent disassembly and assembly.
[0029]
【The invention's effect】
According to the present invention, the cam slide can be easily detached from the cam guide, and it is not necessary to remove the positioned machining tool from the cam slide, and the machining tool can be fixed to the cam slide as it is. It is possible to provide a press cam mold having excellent properties.
[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.
4 is an operation explanatory diagram of the example shown in FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Press cam type | mold 2 Cam guide 3 Guide bar 7 Cam slide 8 Energizing means 9 Cam driver 10 One end part 11 One end part fixing means

Claims (3)

A cam guide, a guide bar installed on the cam guide, a cam slide having a mounting surface to which a machining tool is attached, and a guide slide mounted on the guide bar and the cam guide. A biasing means for biasing toward the position; a cam driver that contacts the cam slide to move the cam slide toward the operating position against the biasing force of the biasing means; and a cam slide mounting surface side one end portion fixing means for the end portion of the guide bar is fixed to removably to the cam guide with respect to the moving direction of the cam slide to the other end portion of the guide bar is provided with and the other end fixing means for fixing the cam guide The guide bar passes through the cam slide, and the one end fixing means includes a recess provided in the cam guide so as to receive one end of the guide bar, and the recess of the recess. A closing plate fixed to the cam guide so as to close the mouth end surface, and the closing plate is fixed to the cam guide by a screw at a position straddling the recess. When the guide bar is released from being fixed to the other end, the guide bar can be moved with respect to the moving direction of the cam slide, and the guide bar can be removed from the cam guide with respect to the direction perpendicular to the moving direction of the cam slide. A press cam mold comprising: an end face of a cam guide that abuts the other end of the bar; and a screw that passes through the other end of the guide bar and the end face of the cam guide and is screwed into the cam guide . One end of the guide bar has a rectangular cross section, and the recess has a shape complementary to the one end of the guide bar so as to receive the one end of the guide bar having the rectangular cross section without a gap. Item 2. A press cam mold according to item 1 . The cam guide includes a base portion, and a front wall portion and a rear wall portion formed integrally with the base portion so as to face each other, and the guide bar is provided between the front wall portion and the rear wall portion. The urging means includes a rod-like member that penetrates the cam slide in a movable manner, and a spring receiving member that is attached to one end portion of the rod-like member and is capable of coming into contact with the front wall portion of the cam guide. A coil spring that surrounds the rod-shaped member, and is attached to the other end of the rod-shaped member, and a rod member that is attached to the other end of the rod-shaped member and prevents the rod-shaped member from coming out of the cam slide The biasing means includes a front wall so that a gap in the moving direction of the cam slide is formed between the rear wall portion of the cam guide and the end surface of the flange member facing the rear wall portion. Between the front and rear wall Press cam die according to claim 1 or 2.

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