JP2002035860A - Punching die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punching die facilitating the adjustment of the punching height. SOLUTION: At the usual time, a guide member 43 is set so as not to rotate against a punch driver 35 by means of a locking means 41, however, in the case of adjusting the punching height, the guide member 43 is set so as to be rotatable against the punch driver 35 by making the locking means 41 an unlocking state. And by holding a punch guide 29 integrally rotating together with the punch driver 35 so as not to rotate, and rotating a punch head 55 integrally fitted to the guide member 43, the guide member 43 is rotated against the punch driver 35 to lower the punch driver 35 by the action of a screws 45, 47 provided on the guide member 43 and the punch driver 35, and by lowering a punch body 31 integrally provided together with the punch driver 35, the punching height is made high. Upon completing the adjustment of the punching height, the locking means 41 is made a locking state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch die for punching a work.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional punch die 101 is provided in a cylindrical punch guide 103 which is vertically movably supported by an upper die holder (not shown) in a punch press. A punch body 105 having a punch blade portion 105B at a lower end is provided to be vertically movable. A punch head 1 is provided at the upper end of a punch driver 107 which is vertically movable through the punch guide 103 in an upward direction.
09, an elastic member 111 such as a strong stripper spring is mounted between the punch head 109 and the punch guide 103, and the punch body 105 and the punch driver 107 are integrally connected by a connecting bolt 113. Have been.

The directionality between the punch body 105 and the punch driver 107 is held by a key 115 attached to the punch driver 107 by bolts. A stripper plate 117 is detachably attached to the lower end of the punch guide 103.

[0004]

In the conventional structure as described above, when the punch blade portion 105B is worn by use of the punch die 101, the connecting bolt 113 is loosened to remove the punch body 105, and the punch blade 105 is removed. Part 1
05B is polished again. Then, the amount of shortening of the punch body 105 due to the re-polishing is determined by the punch body 10.
5 is corrected by interposing a shim between the punch driver 107 and the punch driver 107.

That is, conventionally, height adjustment is performed by using a specific jig, vise, or the like to loosen the connecting bolt 13 and remove the punch body 105, and then interposing a shim as described above. Therefore, there is a problem that attaching and detaching of the punch body 105 and subsequent height adjustment are troublesome.

An object of the present invention has been made in view of the above-mentioned problems of the conventional technology, and an object of the present invention is to provide a punch die capable of easily adjusting a punch height.

[0007]

According to a first aspect of the present invention, there is provided a punch die mounted on a punch guide and supported vertically movably, and integrally with the punch body. A punch driver having a punch driver attached to the punch driver and a punch head for transmitting a pressing force to the punch driver by pressing with a striker, wherein a first screw portion is provided on an outer peripheral surface of the punch driver. A cylinder having a second screw portion on an inner surface which is integrally attached to the punch head and which is screwed to a first screw portion provided on the punch driver for transmitting a pressing force to the punch head to the punch driver; A guide member is provided, which cannot be rotated with respect to the punch driver when locked, and the guide member when unlocked. It is provided with a locking means to allow rotation of the member with respect to the punch driver, and is characterized in.

Accordingly, the lock member normally prevents the guide member from rotating with respect to the punch driver. However, when adjusting the punch height, the lock member is unlocked and the guide member is moved relative to the punch driver. To be rotatable. Then, the punch guide that rotates integrally with the punch driver is held so as not to rotate, and the guide member is rotated with respect to the punch driver by rotating the punch head that is integrally mounted with the guide member, and the guide member and the guide member are rotated. The punch driver is lowered by the action of the first and second screw portions provided in the punch driver, and the punch body provided integrally with the punch driver is lowered to adjust the punch height. When the adjustment of the punch height is completed, the locking means is locked.

According to a second aspect of the present invention, in the punching die according to the first aspect, the locking means is always in a locked state, but is unlocked by an operation from the upper surface of the punch head. State.

Therefore, the locking means is always in the locked state, but can be operated from the upper surface of the punch head when unlocking.

According to a third aspect of the present invention, in the punch die according to the first or second aspect, the locking means includes a plurality of locks provided on an outer peripheral portion of a lock block mounted on an upper portion of the punch driver. A plurality of lock grooves provided on an outer peripheral portion in the upper portion of the groove or the punch driver, and a lock key movably provided on the guide member so as to be fitted into the lock groove to be in a locked state,
A holding pin provided with the lock key at a lower portion and exposed to a long hole formed in the lock block through a hole provided in the punch head, and a holding pin for engaging the lock key with the lock groove at all times. And a biasing member for biasing upward.

Therefore, in the locking means, a lock key provided at the lower part of the holding pin which is normally urged upward by the urging member is provided at the outer peripheral part of the upper part of the lock block or the punch driver. It is locked by fitting into the groove. When the locking means is in the unlocked state, the lock key is locked by pushing down the holding pin exposed in the long hole formed in the lock block through the hole provided in the punch head surface. Remove from block keyway.

According to a fourth aspect of the present invention, in the punch die according to the first, second, or third aspect, the adjustment amount is set by keeping the gap between the flange portion of the lock block and the guide member constant. When a punch that has not been modified and polished is used, the lower part of the punch head and the lock block are configured to be in contact with each other.

Therefore, when the gap between the flange portion of the lock block and the guide member is set to a certain size, the adjustment amount is set, and when a punch that has not been modified and polished is used, the lower part of the punch head and the lock block come into contact with each other. Adjusted. Hide adjustment can be performed only for the gap.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 5 and 6 show the entire turret punch press 1. FIG. The turret punch press 1 has a gap G between the upper frame 5 and the lower frame 7 at the center of the frame 3. The gap G has an upper turret 9 rotatably supported by the upper frame 5 and a lower turret 11 rotatably supported by the lower frame.

A plurality of punch dies P are mounted on the upper turret 9, and a plurality of die dies D are mounted on the lower turret 11. Upper turret 9 and lower turret 11
Are rotated in synchronism, and a punch die P and a die die D for performing desired processing at the processing position R are determined.

Further, a punch die P is provided above the processing position.
A ram 15 provided with a striker 13 for hitting the ram 15 is provided so as to be able to move up and down.
A drive device such as a crank mechanism (not shown) for raising and lowering the motor is provided.

On the other hand, on the right side of the lower turret 11 in FIG. 6 in the gap G, there is provided a working table 17 for supporting a work W to be machined. Both sides (Fig. 6
A movable table 17M that is movable in the Y-axis direction is provided at both the upper and lower sides (middle and upper sides). A carriage base 19 that connects the left and right movable tables 17M across the fixed table 17F is provided to be reciprocally movable in the Y-axis direction. The carriage base 19 can be moved and positioned in the Y-axis direction by a Y-axis motor 21.

The carriage base 19 is provided with a plurality of work clampers 23 for holding the work W.
The carriage 27 has a carriage 27 that can be moved and positioned in the X-axis direction (the vertical direction in FIG. 6) by the X-axis motor 25.

With the above structure, the upper turret 9 and the lower turret 11 are rotated, and the punch die P and the die D for performing desired processing are indexed to the processing position R. Next, the workpiece W is gripped by the workpiece clamper 23, the carriage 27 and the carriage base 19 are moved, and the workpiece W is positioned at the processing position R. Then, the ram 15 is lowered by the driving device, the punch die P is pressed by the striker 13, and the work W is punched by cooperation with the die die D.

1 to 3 show a punch die P according to the present invention. Referring to FIG. 1, in the punch die P, a punch body 31 is provided inside a punch guide 29.
A punch driver 35 is integrally attached to the upper side of the punch body 31 by bolts 33. A pin 36 projecting outward is provided at the upper end of the punch guide 29. When the pin 36 is set on the upper turret 9, it is placed on a lifter spring (not shown) provided on the upper turret 9, The punch guide 29 is held on, for example, an upper turret (not shown) by the force of a lifter spring.

A key 37 is provided at the lower end of the punch driver 35.
Are attached by bolts 39 so as not to rotate with respect to the punch guide 29. Above the punch driver 35, a cylindrical lock block 41 constituting a part of the lock means is provided. The lock block 41 is integrally attached to the punch driver 35 from the inside of the lock block 41 by the bolt 33. A guide member 4 having a cylindrical shape is provided outside the punch driver 35.
3 and a first screw portion (male screw) 45 provided on the outer peripheral surface of the punch driver 35 and a guide member 4.
A second screw portion (female screw) 47 provided on the inner surface of No. 3 is screwed and fixed in the up-down direction.

Since the flange 43F provided at the lower end of the guide member 43 is pressed by the pressing block 51 attached to the upper end of the punch guide 29 by the screw 49, the guide member 43 is held by the punch guide 29. Is allowed, but upward movement is restricted.

Referring also to FIGS. 2 and 3, a punch head 55 is integrally attached to the upper end surface of the guide member 43 by a bolt 53, and a gap between the pressing block 51 and the punch head 55 is provided. The guide member 43 and the punch head 55 can move downward with respect to the punch guide 29 by the repulsive force of the strip spring 57 provided at the same time, but are always urged upward.

The lock block 41 described above is located below the punch head 55, and the lock block 41 is provided below the punch head 55 and above the guide member 43.

A plurality of lock grooves 61 are provided at appropriate intervals on the outer periphery of the flange portion 41F at the upper end of the lock block 41. In part of the punch head 55,
As shown in FIG. 2, a recess 63 that is one step lower is provided, and a through hole 65 in the vertical direction is provided in the recess 63.

Referring to FIG. 1, the elongated hole 59 provided below the through hole 65 of the punch head 55 is widened outward (to the right in FIG. 1). A holding pin 67 is provided at 59 to be movable up and down, and a lock key 69 integrated with the lower end of the holding pin 67 is provided at the elongated hole 59 so as to be movable up and down. The holding pin 67 and the lock key 69 are
A spring 71 provided below the lock key 69 constantly urges the lock key 69 upward.
Are fitted in the lock grooves 61 of the lock block 41 to prevent the lock block 41 from rotating.

Next, the operation of adjusting the punch height will be described. As shown in FIG. 2, when the punch is used, the lock key 69 and the holding pin 67 are urged upward by the spring 71, so that the key 69 is fitted in the lock groove 61 of the lock block 41. The lock block 41 cannot rotate with respect to the punch head 55. Further, since the lock block 41 is integrated with the punch driver 35 by the bolt 33, the punch driver 35 cannot be rotated with respect to the punch head 55.

At the time of adjusting the height, as shown in FIG. 4, first, for example, an operator pushes down the holding pin 67 to shift the lock key 69 to below the lock groove 61, and moves the lock block 41 to the punch head 55. Make it rotatable. At this time, since the upper end of the holding pin 67 protrudes into the recess 63 of the punch head 55,
The holding pin 67 can be easily pushed in.

When the punch guide 55 is slightly rotated while the punch driver 35 is not rotated by fixing the punch guide 29 so that it does not rotate, the punch guide 29 is integrally attached to the punch head 55 by bolts 53. Since the guide member 43 rotates with respect to the punch driver 35, the punch driver 35 and the punch body 31 are integrally lowered by the action of the first and second screw portions 45 and 47, and the punch height can be adjusted. .

At this time, when the punch head 55 is rotated in a state where the pressing pin 67 urged upward by the spring 71 is released, the lock key 69 urged upward moves the next lock in the lock block 41. Groove 6
1 and the lock block 41 is fixed to the punch head 55 again.

For example, at the outer periphery of the lock block 41, 8
When the lock grooves 61 are provided, the punch driver 35 rotates １ ／ of the guide member 43 when it is rotated to the adjacent lock groove 61.
1 can be lowered by 1/8 of the pitch of the first and second screw portions 45 and 47. That is, the punch height can be adjusted so that the punch height is increased by 1/8 of the pitch.

From the above results, it is possible to easily adjust the punch height only by pushing down the holding pin 67 and turning the punch head 55, so that even when the punch die P is set on the upper turret 9, it can be easily adjusted. Adjustment of punch height can be performed.

By adjusting the gap S between the flange portion 41F of the lock block 41 and the guide member 43 to a fixed size, the adjustment amount can be set (cannot be made more than necessary).
When using a punch that has not been modified and polished, the lower block 55D of the punch head 55 and the lock block 41 are in contact with each other.
Height adjustment can be performed only for the gap S described above.

It should be noted that the present invention is not limited to the above-described embodiment of the present invention, but by making appropriate changes,
It can be implemented in other aspects. That is, in the above-described embodiment, the case where eight lock grooves 61 are provided has been described, but the number of lock grooves 61 is arbitrary. The adjustment amount of the punch height can be set by the number of the lock grooves 61 and the pitch of the first and second screw portions 45 and 47.

[0037]

As described above, in the punch die according to the first aspect of the present invention, the guide member is normally prevented from rotating with respect to the punch driver by the lock means. Then, the locking means is unlocked so that the guide member is rotatable with respect to the punch driver. Then, the punch guide that rotates integrally with the punch driver is held so as not to rotate, and the guide member is rotated with respect to the punch driver by rotating the punch head that is integrally mounted with the guide member, and the guide member and the guide member are rotated. The punch height can be easily adjusted by lowering the punch driver by the action of the screw portion provided on the punch driver and lowering the punch body provided integrally with the punch driver. After the adjustment of the punch height is completed, the locking means is set in the locked state, so that the punch die can be easily used.

In the punch die according to the second aspect of the present invention, the locking means is always in a locked state, but can be operated from the upper surface of the punch head, so that the punch die is mounted on a turret or the like. However, the locking means can be easily brought into the unlocked state, and the adjustment of the punch height can be easily performed.

In the punching die according to the third aspect of the present invention, the lock key provided at the lower part of the pressing pin normally urged upward by the urging member is provided on the outer peripheral portion of the lock block. Although the locking means is in the locked state by being fitted into the groove, the holding pin exposed in the long hole formed in the lock block is pushed downward through the hole provided in the punch head to lock. By removing the key from the key groove of the lock block, the locking means can be easily unlocked while the punch die is mounted on a turret or the like, and the punch height can be easily adjusted.

In the punching die according to the fourth aspect of the present invention, when the gap between the flange portion of the lock block and the guide member is set to a certain size, the adjustment amount is set, and when a punch that has not been modified and polished is used, the punch head is used. The lower part and the lock block come into contact with each other and are adjusted. Hide adjustment can be performed only for the gap.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a punch die according to the present invention.

FIG. 2 is a plan view seen from a direction II in FIG.

FIG. 3 is a sectional view showing a lock block.

FIG. 4 is a plan view seen from the IV direction in FIG. 3;

FIG. 5 is a front view of a turret punch press.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a cross-sectional view showing a conventional punch die.

[Explanation of symbols]

 29 Punch Guide 31 Punch Body 35 Punch Driver 41 Lock Block (Lock Means) 43 Guide Member 45 Screw 47 Screw 55 Punch Head 61 Lock Groove 67 Holding Pin 69 Lock Key P Punch Die

Claims (4)

[Claims] 1. A punch body mounted on a punch guide and supported in a vertically movable manner, a punch driver integrally mounted on the punch body, and a punch for transmitting a pressing force to the punch driver by pressing with a striker. A punch die having a first screw part on an outer peripheral surface of the punch driver and being integrally attached to the punch head to transmit a pressing force to the punch head to the punch driver. And a cylindrical guide member having an inner surface with a second screw portion to be screwed into the first screw portion provided on the punch driver. When the lock is locked, the guide member cannot be rotated with respect to the punch driver. Locking means for enabling the guide member to rotate with respect to the punch driver when unlocked. Features punch mold. 2. The apparatus according to claim 1, wherein the locking means is normally in a locked state, but is unlocked by an operation from an upper surface of the punch head.
The punch mold described. 3. The lock means comprises: a plurality of lock grooves provided on an outer peripheral portion of a lock block attached to an upper portion of the punch driver; or a plurality of lock grooves provided on an outer peripheral portion of an upper portion of the punch driver. A lock key provided on the guide member so as to be vertically movable so as to be fitted into the lock block, and a lock key provided on a lower portion of the lock block through a hole provided in the punch head with the lock key provided at a lower portion. 3. The control device according to claim 1, further comprising: a pressing pin exposed to the elongated hole; and a biasing member that constantly biases the pressing pin upward to engage the lock key with the lock groove. 4. The punch mold described. 4. The adjustment amount is set by setting a gap between the flange portion of the lock block and the guide member to a fixed size. When a punch that has not been modified and polished is used, the lower portion of the punch head and the lock block come into contact with each other. The punch die according to claim 1, 2, or 3, wherein the punch die is configured as follows.