JPH09295095A - Punch fitting position adjusting device in heading machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically adjust the fitting position of a punch by operating a heading machine from the outside without stopping the operation of the heading machine, and to easily and rapidly perform its re-adjustment work. SOLUTION: A slide member 8 is supported on a front side of a ram 4 in a vertically movable manner, and a punch holder 10 in which a punch 6 is fitted to the front side of the slide member 8 is supported in an oscillating manner. The slide member 8 is movable in the vertical direction by the drive of a first motor 16 to be driven by the operation from the outside through a first interlocking mechanism 17. The punch holder 10 is oscillated in the right-to-left direction by the drive of a second motor 38 to be driven by the operation from the outside through a second interlocking mechanism 19. The punch holder 10 and the slide member 8 are locked to the ram 4 by the operation of a cylinder 13 to be operated from the outside through a pressing member 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product having a predetermined shape by forging a material between a die provided on a machine base and a punch attached to a front surface of a ram so as to face the die. The present invention relates to a device for adjusting a mounting position of the punch in a press forming machine for forming a sheet.

[0002]

2. Description of the Related Art Bolts, nut members, or various types of materials are produced by forging a material between a die provided on a machine base and a punch attached to the front surface of a ram that moves back and forth so as to face the die. In a forging machine that molds parts, etc., in order to mold good products with high accuracy,
Before starting the forging, the mounting position of the punch is adjusted to perform the centering adjustment so that the punch axis aligns with the die axis. Even when the punches are aligned with each other, for example, when the punch is driven into the center of the material and the peripheral edge of the material is extruded, a hollow or cup-shaped product is formed during backward processing or at the tip of the punch. During upset processing, where a large-diameter head or the like is formed at the end of the material between the recessed portion and the front surface of the die, punching may occur due to the parallelism of the material end surface or variations in the hardness of the material. Uneven load acts and the punch is eccentric, which may cause uneven thickness in the molded product and form a defective product.

Further, when a plurality of forging stations are constituted by a plurality of dies provided on the machine base and a punch attached to the front surface of the ram so as to face each of these dies, the plurality of forging stations are formed. If the forging load applied to one of the forging stations is larger than the other forging stations, an eccentric load will be applied to the ram. As a result, the punch mounted on the front surface of the ram may be eccentric and a defective product may be formed.

For this reason, the mounting position of the punch is readjusted in consideration of the degree of eccentricity of the punch during the forging process as described above. , For example, fairness 7-1564
No. 6 is known. In the device disclosed in this publication, a slide member is supported on the front side of a ram so as to be vertically movable, and a punch holder having a punch attached to the front surface of the slide member is swingably supported. While the member and the punch holder are fixed to the ram by two set bolts, a pair of left and right adjusting bolts are provided on both sides of the insertion portion of the set bolt in the punch holder, and these adjusting bolts are rotated. The punch holder is swung in the left-right direction with respect to the slide member by moving the punch holder in the left-right direction to adjust the mounting position of the punch fixed to the punch holder in the left-right direction, while the upper surface of the ram is The base is fixed,
A positioning bolt for positioning the tip of the slide member by abutting on the top surface of the slide member is screwed into the base, and a vertical adjustment screw having a base end fixed to the top surface of the slide member is inserted through a lock nut. Fixed to the slide member, that is, the punch holder by pulling up and down the vertical adjustment screw by rotating the lock nut while the positioning bolt is rotated and moved to the predetermined position. The mounting position of the punch is adjusted in the vertical direction.

[0005]

By the way, in the above-described conventional punch mounting position adjusting means, when the mounting position of the punch is readjusted in consideration of the degree of eccentricity of the punch during the forging process, The operation of the forging machine is temporarily stopped, and then the set bolts that fix the slide member and punch holder to the ram are loosened manually, and the pair of left and right adjusting bolts or positioning bolts and vertical adjusting screws are manually operated. Since it is rotated and adjusted by operation, not only the work is very complicated,
A lot of time will be spent and productivity will drop,
In addition, there is a problem in that the mounting position of the punch readjusted by each worker is likely to vary, and thus an adjustment work by a skilled worker is required.

Therefore, according to the present invention, when the punch mounting position is readjusted, the punch mounting position can be automatically adjusted by an external operation without stopping the operation of the forging machine. An object is to make it possible to perform the readjustment work easily and quickly.

[0007]

In order to solve the above problems, the present invention provides a material between a die provided on a machine base and a punch mounted on the front surface of a ram so as to face the die. In a punch mounting position adjusting device in a forging machine for forming a product having a predetermined shape by forging, a slide member is supported on the front side of a ram so as to be vertically movable, and a punch is provided on the front surface of the slide member. While the attached punch holder is swingably supported, it has a first motor driven by an external operation, and the driving of the motor moves the slide member in the vertical direction via a first interlocking mechanism. A horizontal position adjusting hand which has a vertical position adjusting means and a second motor driven by an external operation, and which drives the motor to swing the punch holder in the horizontal direction via a second interlocking mechanism. When, having a cylinder which is operated by an external operation, via the pressing member by operation of the cylinder, characterized by comprising a lock means for locking the said punch holder and the slide member to the ram.

According to the above construction, when readjusting the mounting position of the punch in consideration of the degree of eccentricity of the punch during the forging process, the punching machine is operated from the outside without stopping the operation. The lock cylinder is actuated by means of this to loosen the clamping force of the pressing member on the ram between the punch holder and the slide member, so that the ram, the slide member and the punch holder may move depending on the reciprocating motion of the ram. The punch holder is in a temporary locked state in which the slide member and the punch holder can be operated by an external force without being displaced, and the first motor is driven by an external operation under the temporary locked state.
The motor moves the slide member vertically with respect to the ram via the first interlocking mechanism, or drives the second motor so that the motor moves the punch holder in the left-right direction via the second interlocking mechanism. It is possible to adjust the mounting position of the punch vertically and horizontally by swinging the punch. After that, by operating the cylinder by an external operation and increasing the tightening force by the pressing member again, it is possible to completely lock the punch holder and the slide member on the ram. As a result, the adjustment of the mounting position of the punch is controlled by the operation from the outside.
It can be automatically adjusted through the second motor and cylinder, and when the punch mounting position is readjusted, it is not necessary to stop the operation of the forging machine each time, and the readjustment work is easy and easy. It can be done quickly and quickly.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings.

First, a schematic structure of a forging machine equipped with a punch mounting position adjusting device according to the present invention will be described.
As shown in FIG. 1, a forging machine 1 includes a die block 3 installed at a predetermined position of a machine base 2 and a ram 4 which is arranged to face the die block 3 and moves forward and backward with respect to the block 3. Have and. And on the front surface of the die block 3,
A plurality of dies 5 ... 5 ranging from rough to fine are held side by side at regular intervals. On the other hand, in front of the ram 4, each die 5 ... 5
A plurality of punches 6 ... 6 are arranged in parallel so as to face each other, and the punches 6 ... 6 and the dies 5 ... 5 that face each other are arranged.
And form a plurality of forging stations.

As the ram 4 reciprocates, the punches 6 ... 6 mounted on the front surface of the ram 4 are moved back and forth toward the dies 5 ...
As shown by the chain line, the material X supplied from one side of the machine base 2 and cut into a predetermined size by a cutter, though not shown, is provided on the front surface of each die 5 ... By the material transfer device equipped as the same number,
The material X is sequentially transferred between the dies 5 ... 5, and the material X is driven into the dies 6 ... 6 by the tips of the punches 6 ... 6 and is stepwise forged to be finally formed into a predetermined shape. It is configured.

On the other hand, as shown in FIG. 3, a punch block 7 is fixedly provided on the front surface of the ram 4, and a slide member 8 is supported on the front surface of the punch block 7 so as to be vertically movable. On the front surface of the slide member 8, a punch holder 10 to which the punch 6 is fixed by a mounting bolt 9 is swingably supported. Here, the slide member 8 and the punch holder 10 are attached to the ram 4 by a set bolt 11 with a predetermined tightening torque. In addition, adjacent slide members 8 are attached to each other in a butting relationship with each other so that lateral movement of the slide members 8 is restricted, and the punch holders 10 ... 10 are arranged between the adjacent punch holders 10. It is installed with a specified gap.

Then, the slide member 8 and the punch holder 1
In the insertion hole of the set bolt 11 formed to
A sleeve 12 having an inner diameter larger than the shaft diameter of the set bolt 11 is fitted, and the sleeve 12 connects the punch holder 10 and the slide member 8 and tightens the set bolt 11 in a predetermined manner. By applying a lateral force against the torque to the punch holder 10, the holder 10 can be swung with respect to the slide member 8 about the sleeve 12. Further, compared with the shaft diameter of the set bolt 11, the bolt 11
The inner diameter of the slide member 8 and the insertion hole formed in the punch holder 10 are large, and by utilizing this clearance, a vertical force against the predetermined tightening torque of the set bolt 11 is applied. It is possible to move the punch holder 10 together with the slide member 8 in the up-and-down direction.

Further, as shown in FIG. 4, in addition to the set bolt 11, lock means for locking the slide member 8 and the punch holder 10 corresponding to the punches 5 ... 5 to the punch block 7 is provided. .

This locking means is provided on the upper part of the punch block 7 and is a cylinder 13 such as a hydraulic cylinder which is operated by an external operation, a slide member 8 and a punch holder 10 which extend forward from the cylinder 13. And a lock nut (a pressing member) 15 with a flange provided at the tip of the piston rod 14 penetrating the insertion hole formed in the. Then, by operating the piston rod 14 of the cylinder 13 to be shortened by an external operation, the punch holder 10 and the slide member 8 are pressed against the punch block 7 via the lock nut 15 to be completely locked, and By lowering the hydraulic pressure in the cylinder 13, the tightening force of the punch holder 10 and the slide member 8 to the punch block 7 by the lock nut 15 is loosened, and the slide member and the punch holder are displaced due to the reciprocating motion of the ram. Nonetheless, the slide member and the punch holder are brought into a temporary lock state in which the slide member and the punch holder can be operated by an external force. Here, the inner diameter of the punch holder 10 through which the rod 14 is inserted and the insertion hole formed in the slide member 8 are larger than the axial diameter of the piston rod 14, and the punch holder is utilized by utilizing this gap. It is possible to move the slide member 8 and the slide member 8 vertically and horizontally. The complete lock means a state in which the internal pressure of the cylinder 13 is lowered to a predetermined pressure in the temporary lock state, while the internal pressure of the cylinder 13 is raised to the internal pressure required for normal locking. . Further, when the piston rod 14 is extended, the lock of the punch holder 10, the slide member 8 and the punch block 7 by the lock nut 15 is completely released.

As shown in FIGS. 1 and 3, the base 2 and the ram 4 have a first motor 16 driven by the operation from the outside, and the first motor 16 is driven by the motor 16 to drive the first motor 16. 1 has a vertical position adjusting means for automatically moving the slide member 8 in the vertical direction via the interlocking mechanism 17, and a second motor 18 driven by an operation from the outside. A left-right position adjusting means for automatically swinging the punch holder 10 in the left-right direction about the sleeve 12 via the interlocking mechanism 19 is provided.

In the vertical position adjusting means, as shown in FIG. 1, the first motor 16 is fixed to one side of the base 2 and the first drive shaft 20 is projected from the motor 16 toward the die side. The tip portion of the first drive shaft 20 is attached to the base 2 by the support member 2
1 and rotatably supported. A base 22 protruding forward is fixedly provided on the upper surface of the ram 4, and the first drive shaft 2 is attached to one side of the base 22.
A bracket 25 that supports a bevel gear 23 movably supported only in the axial direction by engagement of a key and a key groove and a bevel gear 24 that meshes with the bevel gear 23 are fixed to 0. The rotational power transmitted to the bevel gear 24 is rotatably supported on the base 22 from an intermediate shaft 26 to which the bevel gear 24 is fixed, and to a first transmission shaft 27 arranged below the intermediate shaft 26. Transmitted via gears 28 and 29,
The transmission shaft 27 is provided with worms 30 ... 30 corresponding to the punches 5 ... 5, respectively.

On the other hand, a screw groove 8a is formed on the upper surface of the slide member 8, and the screw groove 31a is formed on the lower portion of the screw groove 8a.
A screw member 31 having a threaded portion is screwed, and an upper portion of the screw member 31 penetrates the base 22 and projects upward, and an intermediate portion thereof is attached to the base 22.
It is rotatably supported via 2. A worm wheel 33 that meshes with the worm 30 is rotatably supported on the outer periphery of the upper portion of the screw member 31, and the upper portion of the screw member 31 is moved only in the axial direction by the engagement of a key and a key groove. A clutch mechanism that includes a clutch member 34 that is movably supported and that has clutch teeth that mesh with the clutch teeth that are formed on the upper surface of the worm wheel 33, and a cylinder 35 that is operated by an external operation and that moves the clutch member 34 up and down. 36 are provided. still,
The cylinder 35 is supported by the base 22 via a bracket 37.

Therefore, in the temporarily locked state by the locking means, the first motor 16 is driven by an external operation to drive and rotate the first drive shaft 20 by a predetermined amount, and the drive shaft 20 is driven.
Is transmitted to the screw member 31 via the bevel gears 23, 24, the intermediate shaft 26, the interlocking gears 28, 29, the worm 30, the worm wheel 33, and the clutch member 34, and the screw member 31 is rotated in a predetermined direction. As a result, the slide member 8 is vertically moved by a predetermined amount by the thrust of the screw member 31. Thereby, the mounting position of the punch 5 fixed to the punch holder 10 can be adjusted in the vertical direction. In that case, the vertical adjustment of the punch holder 10 is performed between the set bolt 11 and the slide member 8, between the set bolt 11 and the slide member 8 or the punch holder 10, and between the piston rod 14 and the slide member 8 or the punch holder 10. It is possible to adjust within the range of and.

Further, in the above-mentioned structure, the punch holders 10 ... 10 can be adjusted by the rotational power of the first motor 16 and the first motor 16 can be adjusted.
It is possible to selectively transmit power from the to the respective screw members 31 ... 31 via a clutch mechanism 36 that can be intermittently operated by an external operation.

As shown in FIG. 1, the left and right position adjusting means includes a second motor 18 fixedly mounted on the base 2 at a position below the first motor 16 and the second drive shaft 39 from the motor 18. Is protruded toward the die side below the first drive shaft 20, and the tip of the second drive shaft 39 is rotatably supported by the base 2 via the support member 21. In addition, the second portion is provided in front of one side portion of the base 22.
A bracket 42 for bearing a bevel gear 40 movably supported only in the axial direction on a drive shaft 39 by an engaging means formed by a key and a key groove, and a bevel gear 41 meshing with the bevel gear 40.
Has been fixed. The rotational power of the bevel gear 41 is transmitted to the second transmission shaft 43 which is provided with the bevel gear 41 and is supported on the base 22. The second transmission shaft 43 is provided with worms 44 ... 44 corresponding to the punches 5 ... 5, respectively.

On the other hand, an eccentric shaft 45 having an eccentric part 45a and a worm wheel 46 is provided in the middle part, and the eccentric shaft 45 is provided.
Both end portions of are rotatably supported by the front wall 22a of the base 22 and the punch block 7. In addition, the eccentric portion 45a is fitted into the recess 10a formed in the upper portion on the back side of the punch holder 10 via the sliding frame 47. On one side of the worm wheel 46, there is provided a shaft member 48 that vertically penetrates the base 22 and has an intermediate portion rotatably supported by the base 22. A worm 49 that meshes with the worm wheel 46 is provided at the lower end of the shaft member 48, and a worm wheel 50 that meshes with the worm 44 is rotatably supported on the outer periphery of the upper portion of the shaft member 48 while the worm wheel 50 is rotatably supported. A clutch member 51 having a clutch tooth formed on the upper surface of the worm wheel 50 is supported on the upper portion of the wheel 50 so as to be movable only in the axial direction by an engagement means formed by a key and a key groove, and which is formed on the upper surface of the worm wheel 50. , Operated by an external operation,
A clutch mechanism 53 including a cylinder 52 for moving the clutch member 51 up and down is provided. The cylinder 52 is fixed to the base 22 via a bracket 53.

Therefore, in the temporarily locked state by the locking means, the second motor 18 is driven by an external operation to drive and rotate the second drive shaft 39 by a predetermined amount, and the drive shaft 39 is driven.
Rotation power of the bevel gears 40, 41, the second transmission shaft 43, the worm 44, the worm wheel 50, the clutch member 53,
The eccentric shaft 45 is transmitted to the eccentric shaft 45 via the shaft member 48, the worm 49, and the worm wheel 46, and the eccentric part 45a of the eccentric shaft 45 is rotated in a predetermined direction. Can be moved in the left-right direction by a predetermined amount. Thereby, the punch holder 10
The mounting position of the punch 5, which is fixed to, can be adjusted in the left-right direction.

In this case, the left and right positions of the punch holder 10 are between the set bolt 11 and the sleeve 12, between the set bolt 11 and the slide member 8 or the punch holder 10, and between the piston rod 14 and the slide member 8 or the punch holder 10. It is adjustable within the range of.
Further, according to the above configuration, one second motor 18
The punch mechanism 10 ... 10 can be adjusted by the rotational power of the clutch mechanism 53, which can interrupt the power transmission from the second motor 18 to the eccentric shafts 45 ... 45 by an external operation. It is possible to perform selectively through.

Further, as shown in FIG.
The taper groove 54 formed in the ram 4 at the back of 6
A wedge body 55 is vertically movably provided inside each of the punches 6 ... 6 and a screw shaft 56 is integrally fixed to the upper end surface of the wedge body 55. A cylindrical driving member 57, which projects on the upper surface of the base 22 and has an internal thread portion 57a which is screwed onto the screw shaft 56 and which is formed on the inner periphery, is disposed above the screw shaft 56. A gear portion 57b is formed on the outer periphery of the lower portion of the member 57, and the operation portion 57 is provided on the upper end portion.
c is integrally formed. Then, the operation unit 57c
Is manually operated to rotate in a predetermined direction, or the gear portion 57b is rotated via an appropriate drive source such as a motor to screw the female screw portion 57a of the drive member 57 into the screw shaft 56 and the screw shaft 56. The wedge body 55 integrated with the punch 5 moves up and down, and the punch 5 is moved back and forth in the axial direction of the punch 5 via a pressing body 58 interposed between the front surface of the wedge body 55 and the back surface of the punch 6. Thus, the mounting position of the punch 5 can be adjusted in the front-back direction. The axial diameter of the tip of the pressing body 58 is smaller than the inner diameter of the insertion hole formed in the slide member 8 through which the pressing body 58 is inserted. It is possible to move the pressing body 58 in the vertical direction.

Further, in the present embodiment, as shown in FIGS. 4 and 5, auxiliary lock means is provided in addition to the lock means.

This auxiliary locking means is used for the punch holder 10
The block member 59 having an inclined surface 59a inclined rearward is fixed to the upper part of the
A cylinder 61 having a piston rod 60 having a wedge portion 60a that engages with the inclined surface 59a of the lower end portion is fixedly mounted on the upper surface of the base 22, and after locking by the locking means, the cylinder 61 is brought into a non-operating state. By doing so, the piston rod 60 is extended by the spring means, and the wedge portion 60
By pressing the block member 59 backward by a, the punch holder 10 and the slide member 8 are auxiliary locked to the punch block 7, and the cylinder 61 is operated to shorten the piston rod 60, whereby the wedge portion 60a.
The pressing of the block member 59 by the is released.

On the side of the first motor 16 and the second motor 18, the amount of movement of the punch 6 in the vertical and horizontal directions is detected by detecting the amount of rotation of the first and second drive shafts 20 and 39, for example. A sensor (not shown) for detecting is provided, and an operating portion (not shown) of each of the motors 16 and 18 provided outside is used to instruct the movement amount with a keyboard or the like so that the motors 16 and 18 are provided. Is rotated by a predetermined rotation amount commensurate with the instructed movement amount.

Next, the operation of this embodiment will be described. Before the start of forging, the punch holder 10 is driven by the respective motors 16 and 18 so that the axis of the punch 6 matches the axis of the die 5.
After adjusting the position of the punch holder 10, the punch holder 10 and the slide member 8 are pressed against the punch block 7 by the locking means and the auxiliary locking means, so that the punch holder 10 is completely locked.

If the end surface of the material X to be driven into the die 5 by the punch 6 is inclined, or if the punch 5 is eccentric due to variations in the hardness of the material X, uneven thickness, etc. Readjustment of the mounting position of the punch 5 is performed in order to obtain a good product with no defect. In that case, the bracket 2 supporting the bevel gears 23 and 24 with the reciprocating motion of the ram 4
5 and the bracket 42 supporting the bevel gears 40, 41 also reciprocate, so that the bevel gear 23 slides on the first drive shaft 20 and the bevel gear 40 slides on the second drive shaft 39 in the axial direction. Therefore, it is possible to readjust the mounting position of the punch 5 without stopping the operation of the press forming machine 1.

That is, first, the cylinder 13 of the lock means and the cylinder 61 of the auxiliary lock means for the punch 6 requiring adjustment are operated from the outside to release the pressing of the block member 59 by the wedge body 60a of the auxiliary lock means. At the same time, the tightening force on the ram 4 between the punch holder 10 and the slide member 8 by the lock nut 15 of the locking means is loosened,
The ram 4, the slide member 8, and the punch holder 10 do not move relative to each other due to the reciprocating motion of the ram 4, but the slide member 8 and the punch holder 10 can be operated by an external force. Lock it.

Next, when the vertical position of the punch 6 is adjusted, the cylinder 3 for the punch 6 to be adjusted is adjusted.
5 is actuated by an external operation to connect the clutch mechanism 36.

Then, the first motor 16 is driven by an external operation to drive and rotate the first drive shaft 20 by a predetermined amount, and the rotational power of the drive shaft 20 is supplied to the bevel gears 24, 25, the intermediate shaft 26, and the interlocking gear. 28, 29, the first transmission shaft 27, the worm 30, the worm wheel 33, and the clutch member 34 to transmit to the screw member 31 and rotate the screw member 31 in a predetermined direction, so that the thrust of the screw member 31 causes a slide member. 8 is moved up and down by a predetermined amount. This allows
The mounting position of the punch 6 fixed to the punch holder 10 can be adjusted in the vertical direction.

Further, when the left and right positions of the punch 6 are adjusted, the cylinder 5 for the punch 6 to be adjusted is adjusted.
2 is operated by an external operation to connect the clutch mechanism 53.

Then, the second motor 18 is driven by an external operation to drive and rotate the second drive shaft 39 by a predetermined amount, and the rotational power of the drive shaft 39 is supplied to the bevel gears 40, 41 and the second gear.
It transmits to the eccentric shaft 45 via the transmission shaft 43, the worm 44, the worm wheel 50, the clutch member 53, the shaft member 48, the worm 49, and the worm wheel 46, and the eccentric shaft 45.
By rotating the eccentric portion 45a in a predetermined direction, it becomes possible to move the punch holder 10 left and right by a predetermined amount by the cam action of the eccentric portion 45a. As a result, the mounting position of the punch 5 fixed to the punch holder 10 can be adjusted in the left-right direction.

After that, the clutch mechanism 36 and the clutch mechanism 53 are disengaged, and the cylinder 13 and the auxiliary lock means cylinder 61 of the lock means for the adjusted punch 6 are operated from the outside so that the lock means and the auxiliary lock can be obtained. The punch holder 10 and the slide member 8 are pressed against the punch block 7 and completely locked by the means.

As a result, the mounting position of the punch 6 can be automatically adjusted via the first and second motors 16 and 18 and the cylinders 16 and 61 driven by an external operation. When the mounting position of the punch 6 is readjusted, the readjustment work can be easily, easily and quickly performed without temporarily stopping the operation of the forging machine.

As a result, the time spent for adjusting the mounting position of the punch can be reduced and the productivity can be prevented from lowering, and the readjusting operation can be easily performed by an external operation without requiring skill. Becomes

In the above embodiment, the pressing force of the cylinder 13 of the locking means is loosened so that the slide member 8 and the punch holder 10 are temporarily locked with the ram 4. However, for example, At the time of tightening the set bolt 11 for attaching the slide member 8 and the punch holder 10 to the ram 4, a predetermined tightening torque is provided between the slide member 8, the punch holder 10 and the ram 4 so as to be in a temporary lock state. May be.

Further, in the above-described embodiment, the rotational power from the single first motor 16 is used to drive the plurality of punch holders 1.
Up and down adjustment of 0 ... 10 can be done,
It is possible to selectively perform power transmission from the first motor 16 to each of the screw members 31 ... 31 via a clutch mechanism 36 that can be intermittently operated by an external operation.
The punch holders 10 ... 10 can be adjusted by the rotational power of the two second motors 18, and the power transmission from the second motor 18 to the eccentric shafts 45 ... 45 is interrupted by an external operation. It can be selectively performed through the clutch mechanism 53 which can be performed. As a result, the number of drive sources can be reduced, the structure can be simplified, and the cost can be reduced.

[0041]

As described above, according to the present invention, when the mounting position of the punch is readjusted in consideration of the degree of eccentricity of the punch during the forging process, the operation of the forging machine is not stopped. , The ram, the slide member, and the punch holder reciprocate by operating the lock cylinder by an external operation to loosen the clamping force of the pressing member on the ram between the punch holder and the slide member. Depending on the situation, the slide member and the punch holder are not displaced, and the slide member and the punch holder can be operated by an external force, and the temporary lock state is reached. Under this temporary lock state, the first motor is driven by an external operation. The motor causes the slide member to move vertically with respect to the ram through the first interlocking mechanism, or the second member.
By driving a motor and swinging the punch holder in the left-right direction via the second interlocking mechanism by the motor, the mounting position of the punch can be adjusted in the vertical and horizontal directions. After that, by operating the cylinder by an external operation and increasing the tightening force by the pressing member again, it is possible to completely lock the punch holder and the slide member on the ram. Thereby, the mounting position of the punch can be automatically adjusted through the first and second motors and the cylinder driven by an operation from the outside, and when the mounting position of the punch is readjusted, It is not necessary to stop the operation of the press forming machine each time, and the readjustment work can be performed easily, easily and quickly. As a result, it is possible to reduce the time spent for adjusting the mounting position of the punch and prevent the productivity from lowering, and it is possible to easily perform the readjusting operation by an external operation without requiring skill.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a press forming machine to which a punch mounting position adjusting device according to the present invention is applied.

FIG. 2 is an enlarged plan view of the main part.

FIG. 3 is an enlarged sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged sectional view taken along line BB of FIG.

5 is an enlarged side view taken along line CC of FIG.

FIG. 6 is an enlarged side view taken along the line DD of FIG.

[Explanation of symbols]

 1 Press Forming Machine 2 Machine Stand 4 Ram 5 Die 6 Punch 7 Punch Block 8 Slide Member 10 Punch Holder 13 Cylinder 14 Piston Rod 15 Lock Nut 16 First Motor 17 First Interlocking Mechanism 18 Second Motor 19 Second Interlocking Mechanism

Claims (1)

[Claims] 1. A forging machine for forming a product having a predetermined shape by forging a material between a die provided on a machine base and a punch attached to a front surface of a ram so as to face the die. In the punch mounting position adjusting device, the slide member is supported on the front side of the ram so as to be vertically movable, and the punch holder having the punch mounted on the front surface of the slide member is swingably supported. On the other hand, it has a first motor driven by an operation from the outside, and an up-and-down position adjusting means for moving the slide member in the up-and-down direction via the first interlocking mechanism by driving the motor, and driven by an operation from the outside. A second motor having a second motor, and a left-right position adjusting unit that swings the punch holder in the left-right direction via a second interlocking mechanism by driving the motor, and a cylinder that is operated by an external operation. A punch mounting position adjusting device in a press forming machine, comprising lock means for locking the punch holder and the slide member to a ram via a pressing member by the operation of a cylinder.