JP2006026702A - Cam unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cam unit which requires no positioning to a hole to receive a tip of a pierce punch with respect to the pierce punch when the cam unit is installed, and reduces the cost because the cam unit can be commonly used for works of different shapes. <P>SOLUTION: The hanging cam type cam unit 1 comprises a single cam slide 3 which has a cam face 2 and is movable in the direction A across the vertical direction V, a supporting means 4 to support the cam slide 3 movably in the direction A across the vertical direction V, a lower die 7 which has a cam face 5 having a complementary shape to the cam face 2 and integrally has a cam driver unit 6 which is abutted on the cam face 2 of the cam slide 3 at a cam face 5 to move the cam slide 3 in the direction A, and a reversion means 8 to return the cam slide 3 to the original position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention uses a cam slide having a cam surface to change a pressing force in one direction, such as downward, to a pressing force in the other direction, such as a horizontal direction, which intersects with this, thereby processing a hole or the like in a workpiece. The present invention relates to a cam unit suitable for use in a press working apparatus that performs the above.

JP 2000-61764 A

  For example, a hanging cam type cam device includes a movable cam slide having a cam surface, a support means for suspending and supporting the cam slide in a movable manner, and a cam driver that moves the cam slide in contact with the cam surface of the cam slide. And a return means for returning the cam slide to its original position. When drilling a workpiece with such a cam device, the support means is the upper mold and the cam driver is the lower mold. While mounting each, the pierce punch is attached to the cam slide while aligning with the hole of the button die attached to the lower mold.

  By the way, in the assembly of the cam device to the press working device, the attachment of the pierce punch to the cam slide takes time because it is necessary to align the button die with the hole as described above. In the case of drilling a plurality of holes, the positioning of the corresponding button die holes on the pierce punches of each cam slide is complicated, resulting in a complicated operation. Need time.

  In addition, in order to use a cam device that is specifically designed for a specific workpiece, a newly designed cam device must be manufactured for other workpieces. In addition, it is difficult to reduce costs.

  In addition, alignment of the pierce punch with the button die hole is usually performed by engaging the cam slide cam surface with the cam driver cam surface. Therefore, from this point of view, the assembly of the cam device when applied to the press working apparatus is complicated and requires a very long time. Need. Such a problem does not occur only when the button die for receiving the tip of the pierce punch is used, but when the hole for receiving the tip of the pierce punch is directly drilled in the lower mold without using the button die. Can also occur.

  The present invention has been made in view of the above-mentioned points, and the purpose of the present invention is that it is not necessary to position the pierce punch with respect to the hole for receiving the tip of the pierce punch for installation. As a result, the cam surface and cam of the cam slide can be reduced without the need to mount the cam slide to the upper mold so accurately. It is an object of the present invention to provide a cam unit capable of ensuring accurate engagement with a cam surface of a driver and thus maintaining an accurate position in a hole for receiving the tip of the pierce punch with respect to the pierce punch.

  The cam unit of the present invention includes a single movable cam slide having a cam surface, a support means for movably supporting the cam slide, and a single moving the cam slide in contact with the cam surface of the cam slide. The lower mold is integrally provided with a lower mold and a return means for returning the cam slide to the original position. Here, the lower mold is integrally provided with a single cam driver section. A base and a workpiece support integrally connected to the base, the workpiece support relative to a pierce punch mounted on a single cam slide with respect to a hole for receiving the tip of the pierce punch It has only holes.

  According to the cam unit of the present invention, the lower die includes the base portion integrally provided with the single cam driver portion and the work support portion integrally connected to the base portion, and the tip of the pierce punch. Since the workpiece support has only a hole for the pierce punch mounted on a single cam slide with respect to the hole for receiving the part, the cam surface of the cam driver part with respect to the hole for receiving the tip part of the pierce punch As a result, the pierce punch may be attached to the cam slide in advance with reference to the cam surface of the cam slide that meshes with the cam surface of the cam driver portion. Since it does not require alignment with the hole that receives the tip of the pierce punch, the installation work time can be shortened and the work support part can be Therefore, it can be used in common for workpieces with different configurations by simply machining the shape of the workpiece support to the workpiece, thus greatly reducing costs. Can do.

  In the present invention, the hole for receiving the tip of the piercing punch may be a hole directly drilled in the work support part or a hole for attaching a button die. In some cases, the tip of the piercing punch will be indirectly received in such a hole via a button die.

  In the cam unit according to the present invention, the cam driver portion contacts the cam surface of the cam slide to guide and move the cam slide and to incline in a direction opposite to each other with respect to a direction orthogonal to the moving direction of the cam slide. The cam surface of the cam slide may be provided with a pair of inclined cam surfaces complementary to the pair of inclined cam surfaces of the cam driver portion. If the driver unit and the cam slide are provided, the cam slide can be prohibited from moving in the direction (lateral direction) perpendicular to the moving direction of the cam slide, and the cam slide can be moved in the original moving direction.

  In the cam unit of the present invention, the support means includes a support member adapted to be attached to the upper mold, and a rod attached to the support member at both ends and penetrating the cam slide. The rod may penetrate the cam slide with a gap so that the cam slide can be displaced in a direction perpendicular to the moving direction of the cam slide. According to such a cam unit, the cam driver portion and the cam slide By cooperating with each pair of inclined cam surfaces, it is possible to perform automatic positioning (automatic alignment) of the cam slide in the lateral direction with respect to the cam driver portion, so that the support means can be mounted on the upper mold so much. Even if it is not performed accurately, the cam surface of the cam slide and the cam surface of the cam driver can be accurately engaged with each other. The tip of Suponchi can maintain the exact position of the receiving holes.

  In the present invention, it is preferable that the base portion and the workpiece support portion are integrally formed with each other, and the cam driver portion may be provided by being fixed to the base portion with a screw or the like. The cam driver part may be provided in the base part by integrally molding with the base part.

  The drilling press working apparatus of the present invention has a plurality of the cam units described above, and in this case, each work support part is processed into the shape of the corresponding part of the work to be supported, and the hole of the work support part There is a button die fitted.

  According to the present invention, not only does not need to be aligned with the hole for receiving the tip of the pierce punch with respect to the pierce punch, but it can be used in common for workpieces having different forms. The cost can be reduced, and the cam surface of the cam slide and the cam surface of the cam driver can be accurately engaged without the need to mount the cam slide to the upper mold so accurately. It is possible to provide a cam unit capable of maintaining an accurate position in the hole for receiving the tip of the pierce punch with respect to the pierce punch.

  Next, the present invention and its embodiments will be described in more detail based on preferred examples shown in the drawings. The present invention is not limited to these examples.

  1 to 4, a hanging cam type cam unit 1 of this example has a cam surface 2 and a cam slide 3 that is movable in a direction A intersecting with the vertical direction V, and a cam. The cam 3 has a supporting means 4 that supports the slide 3 so as to be movable in a direction A intersecting with the vertical direction V, and a cam surface 5 having a shape complementary to the cam surface 2. The lower die 7 integrally having a cam driver 6 that contacts the cam surface 2 and moves the cam slide 3 in the direction A, and the cam slide 3 are returned to their original positions (positions shown in FIGS. 5 and 6). And return means 8.

  The cam slide 3 penetrates through the cam slide body 11 having a cam surface 2 including a pair of inclined cam surfaces 9 and 10, a tool mounting base 12 fixed to the front surface of the cam slide body 11, and the cam slide body 11. And a through hole 14 having a stepped portion 13 and a shock-absorbing plate 15 made of rubber or the like attached to the rear surface of the cam slide main body 11. The tool mounting base 12 is provided with an attachment 16. A piercing punch 17 as a tool is attached. The cam slide body 11 has a sliding surface 18 in addition to the cam surface 2.

  The support means 4 is attached to the upper mold 20 with bolts 21 and the like, and has a recess 22, one end 24 to the front wall 25 of the support member 23, and the other end 26 to the support member 23. The rod 28 is attached to the rear wall portion 27 and passes through the cam slide main body 11 of the cam slide 3 through the through hole 14. The rod 28 has the cam slide 3 attached to the cam slide 3. The cam slide body 11 of the cam slide 3 is penetrated with a gap 29 so that it can be displaced in a direction perpendicular to the direction A which is the moving direction. The support member 23 has a sliding guide surface 30 in the recess 22, and the sliding surface 18 of the cam slide body 11 is in contact with the sliding guide surface 30 so as to be slidable in the direction A.

  The lower mold 7 includes a base portion 35 on which a single cam driver portion 6 is integrally provided, and a work support portion 36 that is integrally connected to the base portion 35. The base portion 35 and the work support portion 36 are provided. The cam driver 6 abuts against the cam surface 2 of the cam slide 3 to guide and move the cam slide 3 in the direction A and is orthogonal to the direction A, which is the direction of movement of the cam slide 3. An angled cam surface 5 comprising a pair of inclined cam surfaces 37 and 38 inclined in directions opposite to each other is provided. Thus, the cam surface 2 of the cam slide 3 includes a pair of inclined cam surfaces 9 and 10 having a shape complementary to the pair of inclined cam surfaces 37 and 38 of the cam driver portion 6.

  The cam driver portion 6 may be integrally formed with the base portion 35 in the same manner as the work support portion 36, but instead, the cam driver portion 6 formed separately is fixed to the base portion 35 with bolts or the like. The cam driver 6 may be integrated with the base 35.

  The base 35 is fixed to a base 42 of a punching press 53 (see FIGS. 5 and 6) via a bolt 41 or the like, and the work support 36 is a tip of the pierce punch 17. Only the hole 47 for the pierce punch 17 mounted on the cam slide 3 with respect to the hole for receiving 45 is provided, and the button die 46 is mounted on the hole 47.

  The return means 8 includes a coil spring 51 that surrounds the rod 28 and is disposed between the front wall portion 25 and the step portion 13 of the support member 23, and the cam slide 3 is always moved by the elastic force of the coil spring 51. The initial position (the position shown in FIGS. 5 and 6) is restored.

  As shown in FIGS. 5 and 6, the above-described cam unit 1 is configured such that the lower die 7 is fixed to the base 42 of the punching press working device 53 via bolts 41 and the like, while the support means 4 is the upper die 20. And is used in the punching press working device 53 by being attached to the bolt 21 or the like.

  In such a punching press working device 53, after the work 50 is supported by the work support portion 36, when the support means 4 is lowered via the upper mold 20 by the operation of the hydraulic ram connected to the upper mold 20, The cam surface 2 of the cam slide 3 comes into contact with the cam surface 5 of the cam driver 6, and the cam slide 3 is slidably guided by the cam surface 5 and the sliding guide surface 30 against the elastic force of the coil spring 51 in the direction A. As a result, the pierce punch 17 is moved toward the work support portion 36, and finally the tip 45 of the pierce punch 17 is inserted into the hole 52 of the button die 46 as shown in FIGS. 45 is inserted into the hole 52, and the workpiece 50 supported by the workpiece support 36 is drilled. After this drilling, the hydraulic ram connected to the upper die 20 is operated through the upper die 20. Supporter 4 is lifted, the contact of the cam surface 2 of the cam slide 3 with the cam surface 5 of the cam driver 6 is released, and the cam slide 3 is moved in the opposite direction by the elastic force of the coil spring 51. The position is returned to the position shown in FIGS.

  When the shape of the workpiece 50 is different, when the cam unit 1 is installed in the punching press working device 53, the upper surface 61 and the front surface 62, which are the arrangement surfaces of the workpiece support portions 36, correspond to the shape of the workpiece 50 in advance. It is preferable that the upper surface 61 and the front surface 62 have a shape complementary to the shape of the workpiece 50.

  According to the above cam unit 1, the lower mold 7 includes the base 35 integrally provided with the single cam driver 6 and the work support 36 integrally connected to the base 35. Since the workpiece support 36 has only the hole 47 for the pierce punch 17 mounted on the single cam slide 3 with respect to the hole for mounting the button die 46 that receives the tip 45 of the pierce punch 17, the button die As a result of the cam surface 5 of the cam driver 6 being already positioned with respect to the hole 47 for mounting 46, the pierce punch with the cam surface 2 of the cam slide 3 meshing with the cam surface 5 of the cam driver 6 as a reference. 17 need only be attached to the cam slide 3 in advance, and therefore it is necessary to align the button die 46 with the hole 47 with respect to the pierce punch 17 for installation. Since the installation work time can be shortened and the workpiece support unit 36 is unitized, the workpiece support unit 36 can be formed into a unit, so that it can be applied to workpieces having different forms simply by additionally processing the shape of the workpiece support unit 36. It can be used in common, and thus the cost can be greatly reduced.

  In the cam unit 1, the cam surface 2 of the cam slide 3 includes a pair of inclined cam surfaces 9 and 10 that are complementary to the pair of inclined cam surfaces 37 and 38 of the cam driver portion 6. 3, the movement of the cam slide 3 in the direction orthogonal to the direction A can be prohibited, the cam slide 3 can be moved in the original movement direction, and the cam slide 3 moves the cam slide 3. Since the rod 28 penetrates the cam slide 3 with a gap 29 so that it can be displaced in a direction orthogonal to the direction, the pair of inclined cam surfaces 37 and 38 and 9 and 10 of the cam driver portion 6 and the cam slide 3 respectively. In cooperation with the cam driver section 6, the cam slide 3 can be automatically positioned in the lateral direction (automatic alignment). As a result of ensuring accurate meshing between the cam surface 2 of the cam slide 3 and the cam surface 5 of the cam driver portion 6 even if the mounting is not performed so accurately, the hole 52 of the button die 46 with respect to the pierce punch 17 can be accurately Can maintain position.

  The above is an example of the punching press processing device 53 in which one cam unit 1 is installed between the upper die 20 and the base 42. The cam units 1 may be juxtaposed between the upper mold 20 and the base 42, and in this case, each workpiece support portion 36 is previously processed into the shape of the corresponding portion of the workpiece 50 to be supported as described above. It is good to keep.

It is side explanatory drawing of a preferable example of embodiment of this invention. It is a perspective view of the example shown in FIG. FIG. 3 is a sectional view taken along the line III-III in the example shown in FIG. 1. FIG. 4 is a sectional view taken along the line IV-IV in the example shown in FIG. 1. It is operation | movement explanatory drawing of the example shown in FIG. It is operation | movement explanatory drawing of the example shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cam unit 2, 5 Cam surface 3 Cam slide 4 Support means 6 Cam driver part 7 Lower mold | type 8 Return means

Claims (5)

  A single movable cam slide having a cam surface, a supporting means for movably supporting the cam slide, and a single cam driver section that moves the cam slide by contacting the cam surface of the cam slide are integrated. A lower mold, and a return means for returning the cam slide to its original position. The lower mold is integrally formed with a base portion integrally provided with a single cam driver portion. A cam unit having an articulated work support, the work support having only a hole for a pierce punch mounted on a single cam slide with respect to a hole for receiving the tip of the pierce punch .   The cam driver portion includes a pair of inclined cam surfaces that contact the cam surface of the cam slide to guide and move the cam slide and are inclined in directions opposite to each other with respect to a direction orthogonal to the moving direction of the cam slide. The cam unit according to claim 1, wherein the cam surface of the cam slide includes a pair of inclined cam surfaces complementary to the pair of inclined cam surfaces of the cam driver portion.   The support means includes a support member that is adapted to be attached to the upper mold, and a rod that is attached to the support member at both ends and penetrates the cam slide. The cam unit according to claim 2, wherein the cam slide is penetrated with a gap so that the cam slide can be displaced in a direction orthogonal to the moving direction of the cam slide.   The cam unit according to any one of claims 1 to 3, wherein the base portion and the workpiece support portion are integrally formed with each other.   It has two or more cam units as described in any one of Claim 1 to 4, Each workpiece | work support part is processed into the shape of the corresponding | compatible site | part of the workpiece | work which should be supported, and it is in the hole of a workpiece | work support part. Is a punching machine with a button die.

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