JP3235486B2 - Press type cam structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press-type cam structure constituting a press machine, and more particularly to a press-type cam structure capable of working in a plurality of different directions.

[0002]

2. Description of the Related Art Conventionally, a press die using a slide-type cam has been used for forming or drilling a sloped surface of a sheet metal. This is because when the upper die is vertically lowered against the sheet metal or the like placed on the lower die and is brought into contact with the lower die to process a press-formed product having a predetermined shape (hereinafter referred to as “work”), the upper die moves vertically. Even when the processing direction is inclined with respect to the upper mold, the processing is performed by sliding the processing member in a predetermined direction by the cam structure. Therefore,
A conventional press-type cam structure will be briefly described with reference to the drawings. FIG. 15 is a schematic side view showing a conventional press-type cam structure, showing a state where the cam structure is located at a bottom dead center. Particularly, in this conventional example, an example in which a hole is drilled in a workpiece will be described.

In the conventional press-type cam structure, a passive cam 102 is fixed to a cam base 101 fixed to an upper die (not shown) which moves up and down. The passive cam 102 is engaged with a slide rail 103 formed on the cam base 101. When the upper die is raised, a spring or the like is used to abut a stopper 104 disposed downstream of the inclined slide rail 103. Being energized. The passive cam 102 is formed of a block of blocks, and has mounting surfaces 102a,
102b and a cam surface 102c are formed. By the way, in the conventional press die, the punches 105a, 105
In step b, holes are drilled one by one. Therefore, the punches 105a and 105b are driven by the passive cam 10 at the same angle.
2 stands. On the other hand, a fixed cam 106 is provided on the lower mold side (not shown), and a cam driver 107 is provided at an angle parallel to the processing direction.

Therefore, in the conventional press-type cam structure having such a structure, the passive cam 102 which descends as the upper die (not shown) descends, moves to a predetermined position in the vertical O direction, and the cam surface moves. 102 c contacts the cam driver 107 of the fixed cam 106. Further, the passive cam 102 descending further has its cam surface 102c
7 and slide the slide rail 103 in the upstream P direction with respect to the cam base 101. Therefore,
The passive cam 102 moves in the Q direction, which is the direction of the resultant force in the O direction and the P direction. Then, punching punches 105a, 105 erected on the passive cam 102 moving in the Q direction.
With 05b, drilling is performed on the work W placed on the lower die (not shown). On the other hand, when the machining is completed, the upper die (not shown) rises, and accordingly, the passive cam 102 slides the slide rail 103 to the downstream side opposite to the P direction, and the punches 105a and 105b move in the opposite direction to the Q direction. Will be retreated.

[0005] By the way, such a conventional press-type cam structure has a structure in which the passive cam 102 is one-piece even if it forms a plane having an angle different from the X and Y planes of the workpiece W to be drilled. It moves only in the processing direction. Therefore, in the conventional press die, when a plurality of planes having different angles are processed, an intermediate angle is determined as the processing direction and the moving direction of the passive cam is set. Therefore, in the case of the conventional press-type cam structure, the passive cam 102 sets the direction q at an intermediate angle between the directions x and y perpendicular to the X and Y planes.
In the Q direction, which is the moving direction of.

[0006]

However, the press type cam structure used in such a conventional press type has the following problems. In the press die employing the cam structure, when press working at two or more different angles is performed as described above, the intermediate angle between them is set in the working direction (Q
Direction). For this reason, the press die using the cam structure can be used only for processing when the accuracy tolerance of each processing portion is large. Therefore, each process had to be performed in a separate step using a different press die.

For example, in the case of the work W, the processing on the X plane and the Y plane can be performed at once as described above,
The surface had to be processed by a separate press die. The workpiece W is composed of an X plane whose perpendicular is at an angle of 60 ° with respect to a vertical direction (O direction) which is a moving direction of the upper die, a Y plane at an angle of 30 °, and a Z plane perpendicular to the O direction. , The angle difference between the X plane and the Z plane is large. Therefore, it is not possible to perform processing by setting the intermediate angles of all the surfaces, and it is necessary to perform the processing on the X and Y surfaces and the processing on the Z surface in separate steps using respective press dies. For this reason, in the conventional press-type cam structure, when there is an angle difference exceeding the tolerance when each processing surface is processed, each processing surface is used alone or with a limited plurality of processing surfaces. Only processing was done. In the conventional cam structure of the press type,
Since a processing tool such as the punches 105a and 105b advances at an angle shifted with respect to a processing surface of a processing object, a thrust load is applied, breakage such as breakage is likely to occur, and the life is shortened. . Further, if the number of processing steps is increased, inconveniences such as a dimensional difference in the distance between the related processing portions occur.

Accordingly, the present invention provides a press-type cam structure capable of performing processing from appropriate processing directions on respective processing surfaces at different angles of a processing object in order to solve such a problem. The purpose is to:

[0009]

A press type cam structure of the present invention has a passive cam and a fixed cam for working in a direction inclined with respect to a pressing direction, wherein the passive cam is an upper cam. A holding member fixed to the mold and the holding member
And a passive cam member to be carried.
The members are slidable independently of each other along the ceiling surface of the holding member and are perpendicular to the ceiling surface so as to be in contact with each other.
The lowermost one is supported from below.
A plurality of substrates held by the holding member
If has a processed portion for pressing at different angles for each substrate is provided on each substrate, and said cam portion having a parallel cam surface machining direction of each machining portion, the fixed cam a work But
A plurality of cam surfaces having different angles for guiding the processing portion in a processing direction by sliding a cam surface of a cam portion of each of the passive cam members are provided on a lower die to be mounted. It is characterized.

Further, in the press-type cam structure of the present invention, the holding member has a box shape opened downward, and the passive cam member is provided on the uppermost portion of the plurality of substrates to be superimposed. It is preferable that the substrate located is abutted against the ceiling surface of the box, and the substrate located at the bottom is loaded in the box with both sides supported from below in the sliding direction. Also,
In the press-type cam structure of the present invention, the passive cam member includes:
The processing portion composed of a block having a processing means mounting surface is fixed to the substrate, and the cam portion made of a plate material having the cam surface on a side surface is erected on the substrate, The substrate has a relief portion for avoiding interference between a processed portion and a cam portion constituting another passive cam member to be superimposed, wherein the processed portion and the cam portion are relief portions for a lower substrate. It is preferable that the passive cam member is loaded in the holding member in a superimposed manner so as to protrude therethrough.

According to the press-type cam structure of the present invention having such a configuration, the cam surfaces of the respective passive cam members abut against the cam surfaces of the fixed cams provided on the lower die, respectively, as the upper die is lowered. By moving, the working part of each passive cam member advances and press-processes with respect to the respective processing surface of the processing target, so that the processing direction of each processing surface at a different angle of the processing target from an appropriate processing direction. It became possible to perform processing.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a press type cam structure according to the present invention will be described with reference to the drawings. FIG. 1 is a side sectional view showing an embodiment of a press-type cam structure. FIGS. 2 to 8 show components of the press-type cam structure. The press-type cam structure of the present embodiment shown in FIG. 1 includes a passive cam 1 fixed to an upper die of a press machine (not shown) and a fixed cam 2 for guiding the passive cam 1. Therefore, the configuration of the passive cam 1 will be described first. Since the press machine uses a general-purpose press machine driven by a motor crank, a detailed description and drawings thereof are omitted. The passive cam 1 includes a box-shaped cam base 11 for fixing the passive cam 1 to an upper mold (not shown), and first, second, and third passive cam members 21 and 3 slidably held by the cam base 11.
1, 41 are integrally formed.

FIG. 2 is a side sectional view showing the cam base 11, and FIG. 3 is a view showing an AA section of the cam base 11. As shown in FIG. The cam base 11 is formed in a box shape, and includes a fixed portion 12 that can be fixed to an upper mold (not shown) and a cam member receiving portion 13 having a uniform depth provided below. It is configured. The fixed portion 12 and the cam member receiving portion 13 are vertically divided by an intermediate wall 14, and the intermediate wall 14 is provided so as to be inclined at an angle of θ1 = 20 °. That is, the fixed portion 12 has an intermediate wall 14 inclined at an angle of θ1 = 20 ° as a bottom surface 12a and its fixed portion 12
Are provided upright with respect to the mounting surface. On the other hand, the cam member receiving portion 13 is configured such that the intermediate wall 14 is a ceiling surface 13a, and side walls 13b having a uniform height are provided upright in the vertical direction with respect to the ceiling surface 13a.

The cam member receiving portion 13 has a lower slide plate 15 for the first passive cam member 21 to slide.
Is attached to the ceiling surface 13a, and the inclined downstream side wall 13
A stopper 16 made of a rubber material is affixed to the inner surface b. Further, at the lower ends of the side walls 13b, 13b on both sides,
Upper plates 17, 17 for holding the first, second, and third passive cam members 21, 31, 41 are attached. The upper plates 17, 17 are made of S45C, and the upper surface thereof, that is, the surface on which the third passive cam member 41 slides, is embedded with graphite 18 which has been lubricated by induction hardening. Further, a through hole 19 penetrating the intermediate wall 14 and the lower slide plate 15 and communicating the fixed part 12 and the cam member receiving part 13 is formed.

Next, the first passive cam member 21 will be described. FIG. 4 is an external perspective view showing the first passive cam member 21. FIG. 5 shows the first passive cam member 21.
FIG. 6 is a side view showing the first passive cam member 21. In the first passive cam member 21, a processing block 23 forming a processing portion is fixed to one end of a rectangular plate member 22 of a predetermined thickness forming a substrate, and cam plates 24, 24 forming a cam portion are fixed to the other end. Have been. A long hole 22a is formed in the center of the plate member 22. Through holes 22b, 22b for inserting a spring 28 shown in FIG. ing. By the way, the first passive cam member 21
As shown in FIG. 1, drilling is performed on a 60 ° inclined surface X of the work W. Therefore, the processing block 23 has a mounting surface 23a parallel to the X plane for mounting the punch 25 (see FIG. 1). Specifically, as shown in FIG. 6, it is formed so as to form an angle of θ2 = 40 ° with the plane of the horizontal plate member 22. This is because the cam member receiving portion 13 to which the first passive cam member 21 is attached is inclined at an angle of 20 °. The reason why the cam member receiving portion 13 is inclined is to increase the inclination of the sliding cam surface and reduce the resistance.

As shown in FIG. 1, a punching punch 25 is fixed to the mounting surface 23a via a retainer 26, and the punching punch 25 is covered with the urethane pad 27 except for its tip. Have been done. On the other hand, the cam plates 24, 24
Are formed from two plate members, and cam surfaces 24a, 24a which are in contact with the fixed cam 2 for guiding the first passive cam member 21 to the processing surface are formed on the side surfaces thereof. The cam surfaces 24a and 24a move the machining block 23 to the X-plane of the workpiece W, so that the plane perpendicular to the mounting surface 23a, that is, the perpendicular to the plane of the plate 22, is θ2 =
It is formed at an angle of 40 °. And this cam plate 2
The fourth and fourth passive cam members 31 and 41 are fixedly displaced from the center line of the plate member 22 as shown in FIG. In addition, plate material 2
The graphite 18 buried on both surfaces is lubricated by induction hardening on both upper and lower sides. The same applies to the later-described plate members 32 and 42 which are superimposed on the plate member 22.

Next, the second passive cam member 31 will be described. FIG. 7 is an external perspective view showing the second passive cam member 31. The second passive cam member 31 includes a plate 32 having the same dimensions as the substrate 22 of the first passive cam member 21 and a processing block 33 forming a processing portion and a cam plate 3 forming a cam portion.
4, 34 are fixed. However, the central portion of the plate member 32 constituting the second passive cam member 31 has a through hole 32
a notch 32b at one end of the first passive cam member 21 from which the processing block 23 can protrude, and cutouts 32c at the other end thereof at which the cam plates 24, 24 can protrude. Has been. In addition, fitting holes 32d, 32d for fitting the spring 38 shown in FIG. 1 are formed in the distal end portion of the plate 32 protruding across the notch 32b.

By the way, the second passive cam member 31 is similar to the one shown in FIG.
As shown in (1), drilling is performed on the 30 ° inclined surface Y of the work W. Accordingly, the processing block 33 has a mounting surface 33a parallel to the Y surface for mounting the punch 35 (see FIG. 1).
Specifically, with respect to the plane of the horizontal plate member 32, θ3 = 10
It is formed so as to form an angle of °. This is because the cam member receiving portion 13 to which the second passive cam member 31 is attached is inclined at an angle of 20 °, like the first passive cam member 21 described above. And this mounting surface 33a
Also, as shown in FIG. 1, a punching punch 35 is fixed via a retainer 36, and the punching punch 35 is covered with a urethane pad 37 except for a tip end thereof.

On the other hand, the cam plates 34, 34 are formed from two plates, and the side surfaces thereof have cam surfaces 34a which abut against the fixed cam 2 for guiding the moving direction of the second passive cam member 31. , 34a are formed. Cam surface 34
In order to move the machining block 33 to the Y-plane of the workpiece W, a and 34a are formed at an angle of θ3 = 10 ° with respect to a plane perpendicular to the mounting surface 33a, that is, a perpendicular to the plane of the plate material 32. ing. The cam plates 34, 34
In order to overlap with the first passive cam member 21 and the third passive cam member 41, the first passive cam member 21 and the third passive cam member 41 are fixed at a predetermined position across the notch 32c.

Next, the third passive cam member 41 will be described. FIG. 8 is an external perspective view showing the third passive cam member 41. The third passive cam member 41 includes a plate 42 having the same dimensions as the substrates 22 and 32 of the first and second passive cam members 21 and 31 and a processing block 43 forming a processing portion and a cam plate 44 forming a cam portion. , 44 are fixed. And
The plate member 42 constituting the third passive cam member 41 has a first passive cam member 21 on one end side similar to the second passive cam member 31.
And a notch 42a through which the processing block 23 of the second passive cam member 31 can protrude, and a first notch 42a at the other end.
Notches 42b through which the cam plates 24, 24 of the passive cam member 21 and the cam plates 34, 34 of the second passive cam member 31 can protrude.
42b, 42b are cut out at three places. In particular, the middle notch 42b is formed wide because it is penetrated by the two cam plates 24 and 34. Further, fitting holes 42c, 42c into which the springs 48 shown in FIG. 1 are fitted are formed in the distal end portion of the plate member 42 projecting across the notch 42a.

By the way, the third passive cam member 41 is
As shown in (1), drilling is performed on the plane Z of the work W. Accordingly, the processing block 43 has a mounting surface 43a parallel to the Z plane for mounting the punch 45 (see FIG. 1). Specifically, an inclined surface is formed in the direction opposite to the mounting surfaces 23a and 33a of the first and second passive cam members 21 and 31 so as to form an angle of 20 ° with the plane of the plate member 42. is there. This is because the cam member receiving portion 13 to which the third passive cam member 41 is attached is inclined at an angle of 20 °. As shown in FIG. 1, a punch 45 is also fixed to the mounting surface 43a via a retainer 46. The punch 45 is covered with a urethane pad 47 except for a tip end thereof. .

On the other hand, the cam plates 44, 44 are made of two plates, and have cam surfaces 44a, 44a on their side surfaces for guiding the moving direction of the first passive cam member 41.
Are formed. The cam surfaces 44a, 44a are formed at an angle of θ4 = 20 ° with respect to a surface perpendicular to the mounting surface 43a, that is, a perpendicular to the plane of the plate 42, in order to move the processing block 43 to the Z surface of the workpiece W. The cam drivers 49, 49 are attached here. This cam plate 4
4, 44 and the notches 42 b, 42 b, 42 b are formed on the cam plates 24, 24 of the first passive cam member 21 and the second passive cam member 31.
Since the plates 24, 34, 34 overlap so as to project symmetrically with respect to the center lines of the plate members 22, 32, the plate members 42 are configured at symmetrical positions with respect to the center line. The third passive cam member 41 moves in the same direction as the cam base 11 as will be described later, so that the plate member 42 does not slide. However, the first and second passive cam members 2 are arranged so that the processing angle can be changed.
A plate member 42 urged by a spring 48 is slidably provided in the same manner as 1 and 31.

Then, the first passive cam member 21, the second passive cam member 31, and the third passive cam member 41 having such a configuration are superimposed on top of the plate members 22, 32, 42 in order from the top (FIG. 1). In that case, the processing block 23 of the first passive cam member 21 is
b, 42a, the processing block 33 of the second passive cam member 31 projects through the notch 42a of the plate 42, the processing block 43 fixed to the plate 42 of the third passive cam member 41, and this processing block. 23 and 33 are continuously provided on the center lines of the plate members 22, 32 and 42. Meanwhile, the first
The cam plates 24, 24 of the passive cam member 21 are plate members 32, 42.
The cam plates 34, 34 of the second passive cam member 31 project through the notches 42b of the plate member 42, and the cam plates 44 erected on the plate member 42 of the third passive cam member 41. , 44 and the cam plates 24, 24, 3
4, 34 are sequentially provided. At this time, the cam plates 24 and 34 located at both ends of the cam plate provided at the same time have cam followers 29 and 39 (see FIG. 3) made up of rollers for controlling the movement of the first and second passive cam members 21 and 31. 4, see FIG. 7).

The passive cam member 21 thus polymerized,
31 and 41 are fitting holes 22 of the respective plate members 22, 32 and 42.
b, 32d, and 42c, respectively.
8 and 48 to insert the cam member receiving portion 13 of the cam base 11.
Is fitted inside. Then, the side wall 13 of the cam member receiving portion 13
The passive cam members 21, 31, 41 are held from below by fixing the upper plates 17, 17 to the lower ends of b, 13b. At this time, the plate member 22 of the first passive cam member 21 comes into sliding contact with the lower slide plate 15. Also, by the springs 28, 38, 48,
The passive cam members 21, 31, 41 are always urged by the stopper 16 on the downstream side. Thus, the cam member receiving portion 13
The passive cam members 21, 31, 41 fitted inside the first
The plate member 2 of the passive cam member 21 and the second passive cam member 31
The elongated holes 22a, 32a formed in the second and second passive cam members 41, 32 are communicated with each other, and the respective passive cam members 21, 31 are fixed by the rod 3 fixed to the plate member 42 of the third passive cam member 41 through the elongated holes 22a, 32a. , 41 are positioned so as not to shift.

Next, the fixed cam 2 provided on the lower mold side will be described. FIG. 9 is an external perspective view showing the fixed cam 2. The fixed cam 2 of the present embodiment is configured such that a plurality of driver blocks 52, 54, 55, 57 and driver blocks 53, 56 having a cam driver are integrally fixed to a driver base 51 having an L-shaped cross section. It was done. Specifically, the driver blocks 52, 5
Numeral 5 is for guiding the first passive cam member 21. The cam drivers 58 and 59 are attached to a slope having an angle of θ5 = 30 ° with respect to a horizontal plane. The driver blocks 54 and 57 guide the second passive cam member 31. The cam drivers 60 and 61 are attached to slopes forming an angle of θ6 = 60 ° with respect to a horizontal plane. On the other hand, the driver blocks 53 and 56
Vertical sliding contact surfaces 53a, 56 for guiding the passive cam member 41
a (see FIG. 14), and the cam drivers 49, 49 are attached to the cam plates 44, 44 as described above. On both sides of the fixed cam 2, cam followers 29 and 39 projecting from the cam plates 24 and 34 are guided, and the cam plates 24 and 34 are guided.
24, 34, 34 are cam drivers 58, 59, 60, 6
Forcibly returning members 62 and 6 for forcibly sliding member 1
3 are provided.

Next, the operation of the press-type cam structure of the present embodiment having such a configuration will be described. FIG.
FIG. 3 is a cross-sectional view of a cam structure showing a case where an upper die (not shown) is at a top dead center. When the passive cam 1 is at the top dead center,
Since no load is applied to each of the passive cam members 21, 31 and 41, the passive cam members 21, 31 and 41 are biased by the springs 28, 38 and 48 toward the inclined downstream side of the cam member receiving portion 13. Therefore,
When the upper die is lowered, each passive cam member 2 of the passive cam 1
1, 31 and 41 are guided by the fixed cam 2. First, the cam surfaces 24a, 24a of the cam plates 24, 24 are fixed to the driver block 5 of the fixed cam 2 by the lowering of the cam base 11 fixed to the upper die.
2 and 55 are slidably contacted with cam drivers 58 and 59 provided. When the cam base 11 further descends, the cam plates 24, 24 slide on the cam drivers 58, 59,
The bottom dead center is reached as shown in FIG.

Further, the first passive cam member 21 is
When the plate members 22 are sandwiched between the lower slide plate 15 and the plate member 32 of the second passive cam member 31, when the plate members 22, 24 slide on the cam drivers 58, 59, the cam members receive the cam member against the urging force of the spring 28. The inside of the portion 13 relatively rises to the upstream side. As described above, the moving direction of the first passive cam member 21 descending as the cam base 11 descends is determined by the cam plates 24 sliding on the cam drivers 58 59. Specifically, as shown in the cam diagram showing the cam direction in FIG. 12, the pressing direction, that is, the vertical direction O which is the moving direction of the cam base 11, and the cam drivers 58 and 59
Is the direction R determined by combining the direction P due to the inclination of. Therefore, the processing block 2 of the first passive cam member 21
Direction R in which the trajectory of the tip of the punch 25 fixed to 3 is applied
Is set so that the processing location of the workpiece W is located on the extension of the workpiece.

Next, the second passive cam member 31 is connected to the first passive cam member 31.
It moves by the same operation as the passive cam member 21. In other words, the cam surfaces 34a, 34a of the cam plates 34, 34 are brought into sliding contact with the cam drivers 60, 61 provided on the driver blocks 54, 57 of the fixed cam 2 by the lowering of the cam base 11 fixed to the upper die. When the cam base 11 further descends, the cam plates 34, 34
0, 61, and reaches the bottom dead center as shown in FIG. In addition, the second passive cam member 31 includes the cam plates 34, 34.
Slides on the cam drivers 60 and 61, the plate member 32 becomes the plate member 2 of the first passive cam member 21 and the third passive cam member 41.
In the state of being sandwiched between the cam members 2 and 42, the inside of the cam member receiving portion 13 relatively rises toward the upstream side against the urging force of the spring 38.
At this time, the plate members 22 and 32 that rise while slidingly contacting each other at different speeds are moved to the other plate members 32 because the cam followers 29 and 39 provided on the cam plates 24 and 34 are guided by the forcible return members 62 and 63. , 22 are properly moved.

As described above, the moving direction of the second passive cam member 31 descending as the cam base 11 descends is determined by the cam plates 34, 34 sliding on the cam drivers 60, 61. Specifically, as shown in the cam diagram showing the cam direction in FIG. 12, the pressing direction, that is, the vertical direction O which is the moving direction of the cam base 11, and the cam driver 6
The direction S determined by the combination of the direction S due to the inclination of 0 and 61 is the direction T. Therefore, since the trajectory of the tip of the punch 35 fixed to the processing block 33 of the second passive cam member 31 moves along the direction T, the workpiece W extends on its extension.
It is set so that the processing location of is located.

Next, the third passive cam member 41 is moved by the lowering of the cam base 11 fixed to the upper die.
The cam drivers 49, 49 provided on the driver blocks 53, 56 are in sliding contact with the sliding surfaces 53a, 56a of the driver blocks 53, 56. Then, when the cam base 11 further descends, the cam plates 24, 24 slide on the cam drivers 58, 59, and as shown in FIG.
The bottom dead center is reached as shown in. At this time, the third passive cam member 41 moves in the vertical direction. That is, the moving direction of the third passive cam member 41, which is lowered in accordance with the lowering of the cam base 11, is determined by the vertically provided cam drivers 49, 49 sliding on the sliding contact surfaces 53a, 56a of the driver blocks 53, 56. Is done. Therefore,
In order to move along the direction O shown in the cam diagram showing the cam direction in FIG. 12, the processing position of the workpiece W is set so as to be located on the extension thereof.

Accordingly, when the cam base 11 is lowered and the cam plates 24 and 34 of the first and second passive cam members 21 and 31 slide on the fixed cam 2, the cam member receiving portion 13 is formed due to the difference in the angles of the respective cam surfaces. The sliding speeds of the inner plate members 22 and 32 are different, and the first and second passive cam members 21 and 31 move in the direction R or the direction T shown in FIG. Also, at this time, the third passive cam member 41 allows the cam drivers 49, 49 to slide on the sliding surfaces 53a, 56a of the driver blocks 53, 56 without the plate member 42 sliding.
To the third passive cam member 41 in the direction O shown in FIG.
Will move. Then, the punches 25, 35, and 45 that have reached the work W are pressed substantially perpendicularly to the X, Y, and Z planes, and the holes are punched.
Thereafter, if the upper die (not shown) is raised, the cam member receiving portion 13
Each of the passive cam members 21 and 31 is provided with a spring 28 and 38.
Is pushed back and follows the trajectory opposite to that when descending.
As shown by 0, it returns to the position where it comes into contact with the stopper 16.

Therefore, in the press-type cam structure shown in the present embodiment, the structure of the passive cam 1 is provided with the passive cam members 21, 31, 41 corresponding to the respective working surfaces, and the fixed cam 2 is provided.
By providing the cam drivers 58, 59, 60, 61 and the sliding surfaces 53a, 56a having angles corresponding to the passive cam members 21, 31, 41, respectively, the structure can be moved according to the angle of the processing surface. This allows straight machining on the machined surface. Therefore, a high-precision machining can be performed on a plurality of machining surfaces having different angles. In addition, it is possible to perform processing in multiple steps in one step, and it is possible to reduce the number of steps, simplify the mold, and reduce the processing cost. The passive cam 1 has first, second, and third passive cam members 21, 31, and 41 superposed in a cam member receiving portion 13 of a box-shaped cam base 11, and the plate members 22, 3 are formed.
By adopting a simple cam structure in which the slides 2 and 42 are configured to slide, it is possible to provide an inexpensive press machine having the above effects.

It should be noted that the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the gist of the present invention. For example, in the above-described embodiment, a description has been given of drilling of the workpiece W. However, the present invention can be used not only for drilling but also for bending at a different angle, burring, and the like. Further, for example, the number of processing and the processing direction can be arbitrarily set by adding a cam member or changing the design.

[0034]

According to the present invention, the passive cam includes a holding member fixed to the upper die and a passive cam member held by the holding member.
And having, a passive cam member, the top of the holding member
Sliding independently of each other along the well surface and touching each other
So that it is superposed in the direction perpendicular to the ceiling surface,
The holding part is supported by the
Has a plurality of substrates held in wood, a processing unit for pressing at different angles for each substrate is provided on each substrate, and a cam portion having a parallel cam surfaces wherein in the machining direction of the machining section
The fixed cam on the lower die on which the workpiece is placed.
A plurality of cam surfaces having different angles for guiding the processing portion in the processing direction by sliding the cam surfaces of the cam portions of the respective passive cam members are formed. It has become possible to provide a press-type cam structure that can perform processing from each processing surface in an appropriate processing direction.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing one embodiment of a press-type cam structure according to the present invention.

FIG. 2 is a side sectional view showing a cam base constituting a press-type cam structure.

FIG. 3 shows a cam base A constituting a press-type cam structure.
-It is A sectional drawing.

FIG. 4 is an external perspective view showing a first passive cam member 21.

FIG. 5 is a plan view showing a first passive cam member 21.

FIG. 6 is a side view showing the first passive cam member 21.

FIG. 7 is an external perspective view showing a second passive cam member 31.

FIG. 8 is an external perspective view showing a third passive cam member 41.

FIG. 9 is an external perspective view showing the cam driver 2.

FIG. 10 is a cross-sectional view of the cam structure showing a case where the upper die of the press is at the top dead center.

FIG. 11 is a side sectional view showing a cam base constituting a press-type cam structure.

FIG. 12 is a cam diagram showing a cam direction.

FIG. 13 is a side sectional view showing a cam base constituting a press-type cam structure.

FIG. 14 is a side sectional view showing a cam base constituting a press-type cam structure.

FIG. 15 is a side sectional view showing a conventional cam structure of a press die.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 passive cam 2 fixed cam 11 cam base 21 first passive cam member 31 second passive cam member 41 third passive cam member 22, 32, 42 plate material 23, 33, 43 processing block 24, 34, 44 cam plate 25, 35, 45 Hole punch 58, 59, 60, 61 Cam driver

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-56-148423 (JP, A) JP-A-57-14426 (JP, A) JP-A-63-242425 (JP, A) JP-A-4- 162925 (JP, A) Japanese Utility Model 2-53820 (JP, U) Japanese Utility Model 1983-102226 (JP, U) Japanese Utility Model Utility Model 62-77625 (JP, U) Japanese Utility Model Utility Model 6-86823 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B21D 37/08

Claims (3)

(57) [Claims] 1. A press-type cam structure having a passive cam and a fixed cam for processing in a direction inclined with respect to a pressing direction, wherein the passive cam is a holding member fixed to an upper die and the holding portion.
And a passive cam member held by a member.
The moving cam member is slidable independently of each other along the ceiling surface of the holding member and slidably contacts the ceiling surface.
It is superposed in the direction perpendicular to the surface, and the one located at the bottom is
The plurality of members held by the holding member by being supported
Comprising: a substrate, a processing unit for pressing at different angles for each substrate is provided on each substrate, and a cam portion having a parallel cam surfaces wherein in the machining direction of the machining portions, the fixed cam, It is provided on the lower mold where the work is placed,
A press-type cam structure, wherein a plurality of cam surfaces having different angles for guiding the processing portion in a processing direction are formed by sliding a cam surface of a cam portion of each of the passive cam members. 2. The press-type cam structure according to claim 1, wherein the holding member is formed as a box body opened downward, and the passive cam member is formed of a plurality of substrates to be superimposed. A press wherein the substrate located at the uppermost portion is abutted against the ceiling surface of the box, and the substrate located at the lowermost portion is loaded in the box with both sides supported from below in the sliding direction. Mold cam structure. 3. The press-type cam structure according to claim 1, wherein the passive cam member is fixedly provided with the processing portion comprising a block having a processing means mounting surface with respect to the substrate. The cam portion made of a plate member having the cam surface on a side surface is provided upright on the substrate, and the substrate has a processing portion and a cam portion constituting another passive cam member to be superimposed. A relief portion for avoiding interference is formed, and the passive cam member is loaded in the holding member so that the processed portion and the cam portion protrude through the relief portion of the lower substrate. A press-type cam structure,