JPH0644503Y2 - Home Dimension Adjuster - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a product size adjusting device in a homer, more specifically, a size of a pressed product formed by a punch and a die.
The present invention relates to a device that can be adjusted by an external operation.

[Prior Art] In a homer that presses a punch opposite to the front surface of a die into a die die hole and sequentially presses a metal material from coarse to fine to form a forged product, the receiving die is Since it is fixed so that the support position is always constant,
If the die or punch wears even a little or is distorted due to compressive force, the forged product cannot be obtained with high accuracy as specified.In such a case, if the die support position is adjusted and changed, it will take a while. During that time, the predetermined accuracy can be maintained. Conventionally, such a die supporting position adjusting device is known in Japanese Examined Patent Publication No. 59-26399 and Japanese Utility Model Publication No. 63-116136, but the conventional device moves the entire die back and forth for each die block. It is a thing. Therefore, for example, in the case where a cup product B as shown in FIG. 1 is formed by forging using a die in which a punch is internally formed so as to form a die bottom portion inside the die mold hole, the bottom of the cup The thickness S is determined by the distance between the tip surfaces of the punch and the punch, and the height L of the cup is formed by pressing the punch to squeeze out the excess thickness at the time of forming the bottom thickness, so that the thickness L is overhanged. When the punch or punch wears and the like does not allow the desired bottom thickness S and height L to be obtained, there is no way to replace the punch or punch with a new one. Especially for the punch on the die side, since it is incorporated in the die block so as to be integrated with many parts that make up the die, there is a problem that the punch cannot be replaced unless it is disassembled. there were.

[Problems to be Solved by the Invention] The present invention has been made in view of the above problems of the prior art. The purpose of the present invention is to fix the interior of the die-shaped hole by fixing it internally. The punch can be moved and adjusted in its supporting position with respect to the die-type hole, and the entire die can be removed and disassembled, and the punch need not be replaced. It is intended to provide a product size adjusting device for a homer in which a predetermined size is automatically obtained by an operation from.

[Means for Solving the Problem] In order to achieve the above object, the product size adjusting device in the homer of the present invention is a die 11 in which the punch 1 is internally fixed at a position retracted from the tip opening of the die type hole 11a. A punch 2 provided so as to advance and retreat to a position opposite to the front surface of the punch 1 for supplying a material to a die-shaped hole and press-fitting the punch 2 to forge a cup-shaped product. The punch rear end portion 1a is provided so as to abut against and support a wedge-shaped punch support base 3 so that it can be moved forward a minute distance in the die-shaped hole, and the punch support base 3 and the operation portion on the die block 10 are provided. It is configured such that the punch support base 3 is moved up and down by driving the adjustment screw so that the punch support position can be changed back and forth by interlocking with the adjustment screw drive device 20 provided so that 21 is exposed.

In the product size adjusting device, it is preferable that the operating portion 21 of the adjusting screw driving device 20 be provided with a rotation angle display means.

Further, the punch 1 housed in the die-shaped hole 11a has a rear end portion fitted and held in the load receiving base 12, and a rear end holding portion may be provided with a gap d for allowing forward movement.

Further, the adjustment screw driving device 20 and the punch support base 3 may be coupled by screwing the screw shaft 22 to hold the punch support base in a suspended manner.

[Operation] In FIG. 2, when the operating portion 21 of the adjusting screw driving device 20 exposed on the upper surface of the die block 10 is rotationally driven in the forward or reverse direction by power or human power, the screw shaft 22 rotates together, The punch support base 3 moves upward or downward by screwing a screw.

When the punch support base 3 moves downward, the punch support base 3 is pushed forward (arrow B in FIG. 2) by sliding between the support base 3 and the taper support surfaces 3a. Its front
The punch 1 supported by 3b is pushed forward.

On the contrary, when the punch support base 3 moves upward, the punch support position is retracted because it is pushed backward (arrow mouth).

Since the tip 1b of the punch 1 is located at the position a retracted from the tip opening 11a 'of the die-shaped hole 11a, the punch support position moves forward (arrow a) or, conversely, backward (arrow mouth). When moved, the position of a is displaced forward or backward.

When the moving ram (not shown) advances, the punch 2 is a die-shaped hole.
When the material (blank) is pressed into 11a and the material (blank) is installed, the excess thickness is narrowed down at the same time as the bottom thickness forming, and the cup-shaped product B is forged. At that time, the bottom thickness S and the overall height L are It is determined by the distance X between the tip 1b of the punch 1 and the tip surface 2a of the punch 2. Therefore, when the support position of the punch 1 is displaced by the adjusting screw drive device 20 as described above, a cup-shaped product having an arbitrary size can be obtained.

When the operating portion 21 of the adjusting screw drive device 20 is rotated in the forward or reverse direction, the rotation angle display means 23 is moved to the scale 24 as shown in FIG.
The angle of rotation, and hence the supporting position of the punch 1, can be immediately confirmed by the eyes because it is displayed on the screen.

When the punch 2 retracts, the knockout pin 30 pushes the stripper 31 to push the cup product B out of the die-shaped hole 11a.

[Embodiment] FIG. 2 shows a first embodiment of the present invention.

In the first embodiment, the adjusting screw driving device 20 and the punch support base 3 are screwed together via a screw shaft 22, and the punch support base 3 is vertically moved in a suspending manner by driving the operating portion 21. ing.

For this reason, the threaded shaft 22 has a threaded portion 22a on the upper side of the die block 10
It is configured to be held in a freely rotating manner via a bush 25 fitted in.

The operation unit 21 is formed as a hexagonal prism or the like, and is exposed to the outside and rotated by a tool 28 such as a spanner or driven by a power such as a motor.

FIG. 4 shows a second embodiment of the present invention. In this case, the punch support base 3 is pressed by the screw shaft 26 of the adjusting screw drive device 20 so that the punch support base 3 is interlocked in a pressing manner. For this reason the screw shaft 26
Is screwed into the screw hole 27 of the die 11 so that its lower end portion 26a abuts the upper end surface 3c of the support base 3, and the lower end of the support base 3 has a spring 29
Is supported so that upward elasticity is urged by.

Other than the above, the first embodiment and the second embodiment have substantially the same configuration, and that point will be described below.

As shown in FIG. 2, FIG. 3, FIG. 4, and FIG. 5, the die 11 includes a load receiving base 12 fitted and fixed to the rear end portion, and a die-type tip when supported by the load receiving base. A cylindrical stripper 31 that faces the hole 11a and is loosely fitted to the shaft portion of the punch 1 is integrally fitted and held in the die block 10 to form a die complete 100.

Die complete 100 has a die pedestal 101 at its rear end.
It is attached to a main body frame (not shown) so as to be supported by.

The punch support base 3 is a vertical hole formed at an intermediate position of the load receiving base 12.
The taper support surface 3a on the rear surface is abutted on and supported by the taper surface 12a on the rear surface of the vertical hole 14 by vertically inserting the same into the upper portion 14 of the vertical hole 14 to move the support position of the punch back and forth.

The knockout pin 30 freely penetrates the load receiving base 12 through the hole 102 at the center of the die receiving base 30 and abuts on the rear end portion 31a of the stripper 31, and when the knockout mechanism (not shown) operates, this pin
When 32 is pushed, knockout pin 30
To push out the stripper 31 and thereby push out the cup product B from the die-shaped hole 11a.

The rear end portion 1a of the punch 1 is formed as a base root portion 1c thicker than the punch shaft portion, and the base root portion is fitted and held in the load receiving base 12. Base
A gap d is provided in the mold of 1c. Punch 1 by this gap d
Can move forward a minute distance in the die-shaped hole 11a.

The rotation angle display means 23 is configured by a pointer and a scale, a dial gauge type, or a rotation angle enlarged or amplified and displayed digitally.

In the case of pointers and scales, a scale board 17 is attached to the fixed part around the operation part 21, a pointer is provided at the center, and the rotation angle of the screw shafts 22 and 26 is displayed by reading the movements of the pointers on the scales. To do.

[Advantages of the Invention] Since the present invention is configured as described above, the punch, which was conventionally fixed to the die-shaped hole, can be moved forward a minute distance in the die-shaped hole so that the punch rear end portion can move. Is provided by abutting against and supporting a wedge-shaped punch support base,
Since the rear end holding portion is provided with the gap d which allows the forward movement, the wedge-shaped punch support can be moved up and down to move the punch support position forward or backward to freely adjust the position. For this reason, if the finish dimensions of the forged product are not correct, these dimensions can be adjusted to easily obtain the specified product. In particular, the dimensional accuracy can be adjusted reliably by operating the operating portion of the adjusting screw drive device from the outside even while the machine is running. Further, for the adjustment, the work can be carried out quickly and efficiently without the need to take out and replace the punch and disassemble the die, and the structure is simple and the cost can be low.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a forged product, FIG. 2 is a vertical sectional side view showing a first embodiment of the device of the present invention, FIG. 3 is a plan view of an operating portion of an adjusting screw driving device, and FIG. FIG. 5 is a vertical sectional side view of the second embodiment of the device of the present invention, and FIG. 5 is a sectional view taken along line AA in FIG. 1 ... Punch, 2 ... Punch 3 ... Punch support, 10 ... Die block 11 ... Die, 12 ... Packing base 20 ... Adjusting screw drive, 21 ... Operating section 22.26 ... Screw shaft, 23 ... Rotation angle display means 11a ... Die type hole, B ... Cup product S ... Bottom thickness, L ... Height

Claims (3)

[Scope of utility model registration request] 1. A die 11 comprising a die 11 internally fixed with a punch 1 at a position retracted from a tip end of a die type hole 11a, and a punch 2 provided so as to advance and retreat to a position opposite to the front face thereof. A device for supplying a material to a hole and press-fitting a punch 2 to forge a cup-shaped product, which comprises the punch 1
The punch rear end portion 1a is provided so as to abut against and support a wedge-shaped punch support base 3 so that it can be moved forward a minute distance in the die-shaped hole, and the punch support base 3 and the operation portion on the die block 10 are provided. It is configured such that the punch support base 3 is moved up and down by driving the adjusting screw in conjunction with the adjusting screw driving device 20 provided so that the 21 is exposed, and the punch supporting position is changed back and forth. The punch 1 housed in the hole 11a has a rear end portion inserted and held in the load receiving base 12, and a rear end holding portion is provided with a gap d that allows forward movement. Adjustment device. 2. The product size adjusting device for a homer according to claim 1, wherein the operating portion 21 of the adjusting screw driving device 20 is provided with a rotation angle display means. 3. The product size adjustment in a homer according to claim 1, wherein the adjusting screw driving device 20 and the punch support base 3 are coupled by screwing a screw shaft 22 to hold the punch support base in a suspended manner. apparatus.