JPH07108339A - Heading machine - Google Patents

Abstract

PURPOSE:To allow to successively perform a series of headed forming including bending on a shaft-shaped work cut at a prescribed length. CONSTITUTION:With a moving body 5 retreated to a feeding position A, one shaft-shaped work (a) is dropped in from a feeding path 23 to the opened space of a movable die 15 and a fixed die 17. Both dies 15, 17 are moved to a bending position B indicated by a dotted line, with the shaft-shaped work (a) stored in the dies, as the moving body 5 is advanced. Then, a vertically moving body 28 is raised with its cam surface 29 engaged with the cam surface 27 of an engaging body 26 fixed on the movable die 15, and the movable die 15 is pressed to the side of the fixed die 17. As a result, the shaft-shaped work (a) is held between pinching surfaces 16, 18 and bent in a chevron shape. After that, both dies 15, 17 are opened, a projecting pin 33 is advanced, and the shaft-shaped work (a) which is bending worked is projected forward, being held by the opening/closing chuck 38 of a transfer member 37 and transported to the next heading position C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forging machine capable of forming a forged product by sequentially performing a series of forging forming including bending on an axial work cut into a certain length.

[0002]

2. Description of the Related Art For example, as shown in FIG. 5, when a shaft-shaped work a cut into a certain length is bent into a dogleg shape to form a product in which eyeball-shaped mounting portions b are formed at both ends, Conventionally, a cut shaft-shaped work a is bent by applying a load from both sides in the axial direction by a press machine, and then both ends of the bent work a are forged by a forging machine to form an eyeball part. b was formed.

That is, since one machine cannot be manufactured by a series of processes, there is a drawback that productivity is low.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to perform a series of forging forming including bending work on a shaft-shaped work cut into a certain length one after another so as to form a forging product. To provide a machine.

[0005]

As a means for achieving the above object, the forging machine of the present invention is provided with a shaft-like workpiece supply position, a bending position and other forging positions on the front surface of the forging machine body. It is provided sequentially at intervals in the horizontal direction, and a movable body is installed between the supply position and the bending position so that the movable body can advance and retreat, and the axial work is clamped by the movable body from both sides in the direction perpendicular to the axis. A pair of left and right dies that are bent by
It is mounted so that it can be opened and closed and is normally biased by spring elasticity to open it. At the supply position, one axial work is supplied to the open space corresponding to the upper part of the open space of both dies retracted to the supply position. In addition to providing a supply path for moving the movable body, a receiving portion is provided in the moving area of the moving body for receiving the axial work supplied between both dies so as not to fall, and at least one of the dies advanced to the bending position is provided at the bending position. A driving member that engages with one of the two dies to close both dies against spring resilience, and a projecting member that projects the bent shaft-like workpiece to the front surface of both dies are provided. The transfer member for transporting the protruding shaft-like work to another forging position is provided between the forging position and the forging position.

[0006]

When the movable body retreats to the supply position with both dies open, one shaft-like work is dropped from the supply path into the open space of both dies and received by the receiving portion.

Subsequently, the movable body is driven forward, and both dies move forward to the bending position while accommodating the axial work between them, and when the die moves to the bending position, at least one of the driving members moves. The dies are engaged and the dies are closed against the spring elasticity, and the axial work therebetween is clamped from both sides in the axial direction, whereby the axial work is bent.

Subsequently, when both dies are opened and the projecting member is actuated, the bent shaft-like work is projected to the front surface of the die, and the projecting work is subjected to another forging by the transfer member. It is transported to the forging position.

In the meantime, the moving body returns to the supply position and the above operation is repeated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 is a main body of a forging machine, and a supply position A, a bending position B, and another forging position C of a shaft-shaped workpiece a are sequentially provided on the front surface thereof at intervals in the horizontal direction. There is.

As shown in FIG. 3, a pair of upper and lower guide rails 2 and 3 each having a hook-shaped cross section are horizontally oriented in a region extending from the above-mentioned supply position A to the bending position B on the front surface of the press machine body 1. The movable body 5 is attached to the guide rails 2 and 3 so as to be freely slidable, and one end of the movable body 5 is connected to a rod 6 which is driven forward and backward by a drive device (not shown) to swing around a shaft 7. Pin 9 protruding from the other end of lever 8
Is fitted into the elongated hole 10 formed in the moving body 5, and the moving body 5 advances and retreats between the retracted position shown by the solid line and the forward position shown by the chain line in FIG. 1 as the lever 8 swings. It is designed to be driven.

A guide hole 12 having a front square shape is formed in a substantially central surface of the movable body 5, and a mounting plate 13 is horizontally movable in the guide hole 12 and the movable body 5 and a surface thereof. It is fitted in one state.

A movable die 15 having a pressing surface 16 for bending is formed on the right side surface of the mounting plate 13, and the pressing surface 16 swells at the center in the vertical direction. A groove having an arcuate cross section is cut along the outer peripheral shape of the shaft-shaped work a.

A fixed die 17 forming a pair with the above movable die 15 is attached to the surface on the right end side of the moving body 5.
On the left side surface, a pressing surface 18 is formed which corresponds to the pressing surface 16 of the movable die 15 and whose central portion in the vertical direction is recessed and an arcuate groove is cut. The wall on the front surface side of the arcuate groove is cut off for the escape of the shaft-shaped work a as shown in FIG.

Between the right side surface of the mounting plate 13 to which the movable die 15 is mounted and the right side wall of the guide hole 12 corresponding thereto, as shown in FIG. 4, mounting holes 21 are respectively formed. By inserting the both ends, the upper and lower two compression coil springs 20 are mounted, the moving force in the left direction is biased to the mounting plate 13, and the movement is regulated by hitting the left side wall of the guide hole 12. At this time, the space between the pressing surfaces 16 and 18 of the dies 15 and 17 is opened so that the axial work a can be inserted from above in a straight posture.

At the position corresponding to the position directly above the open space of the dies 15 and 17 at the supply position A, a vertical supply pipe 23 is installed to which the axial work a cut into a certain size slides down and is supplied. ing. The upper surface of the lower guide rail 3 described above serves as a receiving surface 24 for receiving the shaft-shaped work a.

On the surface of the lower end side of the movable die 15, an engaging body 26 having a slanted cam surface 27 is attached at the lower left corner, and the moving body 5 is moved to a bending position B shown by a chain line in FIG. The cam surface 2 that engages with the cam surface 27 of the engaging body 26 at a position corresponding to the lower side of the engaging body 26 in the case.
An elevating body 28, which forms 9 and is driven to elevate and lower by a drive device (not shown), is provided.

At the bending position B on the front surface of the compacting machine main body 1, two through holes 31 are provided at the upper and lower sides, and the movable body 5 is moved to the bending position B shown by the chain line in FIG. In this case, a through hole 32 is formed at a position aligned with the insertion hole 31, and in the insertion hole 31, a protruding pin 33 for protruding the bent shaft-shaped work a to the front side is connected to a drive device (not shown). It is fitted freely to move forward and backward. A stopper plate 35 is attached to the front surface of the projecting position so as to stop the projecting shaft-shaped work a.

Further, in the region to the right of the bending position B, an opening / closing chuck 38 is provided at a position above the same vertical plane as the protruding position of the shaft-shaped work a, and the bending position B and its position are provided. A plurality of transfer members 37 reciprocating between adjacent forging positions C, between the forging positions C and the next forging position (not shown), and between the next forging positions are integrally moved. Is capable of being installed.

Next, the operation of this embodiment will be described. As shown by the solid line in FIG. 1, when the movable body 5 retracts to the supply position A with the movable die 15 and the fixed die 17 opened,
From the supply path 23 to the pressing surfaces 16 and 18 of both dies 15 and 17.
One of the shaft-shaped works a is dropped in between and received by the receiving surface 24.

Subsequently, the movable body 5 is driven forward along the guide rails 2 and 3 by swinging the lever 8 in the counterclockwise direction in FIG. 1, and the dies 15 and 17 are sandwiched between the pressing surfaces 16 and 18. While the shaft-shaped work a is being accommodated, it is moved to the bending position B as shown by the chain line. Meanwhile, the shaft-shaped work a is supported by the receiving surface 24 so as not to fall.

When the dies 15 and 17 are moved to the bending position B, the elevating body 28, which has been retracted to the descending position shown by the chain line in FIG. 2, is driven upward as shown by the solid line in FIG. By engaging 29 with the cam surface 27 of the engaging body 26 attached to the movable die 15, the movable die 15 is moved toward the fixed die 17 side against the elasticity of the compression coil spring 20 (shown in FIG. 4). To move. As a result, the shaft-shaped work a is clamped by the pressing surfaces 16 of the dies 15, 17.
It is sandwiched between 18 and bent into a dogleg shape.

In the meantime, the next axial work a in the supply path 23
Is an extension portion 4 formed at the left end of the upper edge of the movable die 15.
I'm riding on 0 and waiting.

When the bending work of the shaft-shaped work a is completed, the movable die 15 is retracted by the restoring elasticity of the compression coil spring 20 by the lowering of the elevating body 28, and the pressing surface 16 thereof moves from the pressing surface 18 of the fixed die 17. It opens apart, and at the same time, the protruding pin 33 penetrates the through hole 32 of the moving body 5 and advances to press the bent shaft-shaped work a forward.

Since the front wall of the arcuate groove of the pressing surface 18 of the fixed die 17 is cut off, the shaft-shaped work a is projected by the projecting pin 33 to the front surface of the dies 15, 17 and stopped by the stopper plate 35. To be done.

Subsequently, the open / close chuck 38 that has been opened as shown by the solid line in FIG. 1 is closed as shown in FIG. 2, and the upper end of the projecting shaft-like work a is clamped, and the transfer member 37 is moved to the right. It is transferred to the front surface of the adjacent forging position C.

In the meantime, the moving body 5 returns to the supply position A, and the same operation as above is repeated.

The shaft-shaped work a transferred to the forging position C is
Then, after being pressure-formed, the transfer member 37 is sequentially transferred to a plurality of forging positions provided next, and then is step-wise forged, and finally, as shown in FIG.
A pressed product is manufactured which is bent in a V shape and has eyeball-shaped mounting portions b formed at both ends.

[0029]

[Effects of the Invention] That is, by using the forging machine of the present invention, it is possible to perform a series of forging forming from bending work of a shaft-like work in a series with one forging machine, thereby significantly increasing the production efficiency. There is an effect that can be done.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which a shaft-like work according to an embodiment of the present invention is supplied.

FIG. 2 is a front view showing a state where the shaft-shaped work of the present embodiment is bent.

FIG. 3 is a partial side sectional view of the present embodiment.

FIG. 4 is a partial plan sectional view of the present embodiment.

FIG. 5 is an explanatory diagram of a manufacturing process of a pressed product.

[Explanation of symbols]

a: Axial work A: Supply position B: Bending position
C: Pressing position 1: Pressing machine body 2, 3: Guide rail 5: Moving body 12: Guide hole 13: Mounting plate 15: Movable die 16: Clamping surface 17: Fixed die
18: Clamping surface 20: Compression coil spring 23: Supply path
24: Receiving surface (receiving portion) 26: Engaging body 27: Cam surface 28: Elevating body (driving member) 29: Cam surface 33: Projecting pin (projecting member) 37: Transfer member 38:
Open / close chuck

Claims (1)

[Claims] 1. A forging machine in which a series of forging forming including bending is sequentially performed on a shaft-shaped work cut into a certain length to form a forging product, wherein a shaft is provided on a front surface of a forging machine main body. The workpiece feeding position, the bending position, and the other forging position are sequentially provided at intervals in the horizontal direction, and the moving body is moved between the feeding position and the bending position so as to move back and forth. A pair of left and right dies that are bent by pressing an axial work from both sides in the direction perpendicular to the axis are attached to the body so that they can be opened and closed and are always biased by spring elasticity to open the body. A supply path for supplying one axial work is provided in the open space above the open space of the dies retracted to the supply position, and is supplied to the moving area of the movable body between the dies. The dropped shaft-shaped workpiece The kick receiving portion is provided, the bending position, the drive member engaged with at least one of the two dice advanced into the bending working position to close against the two dice on the spring elasticity,
A projecting member for projecting a bent shaft-shaped work on the front surface of both dies is provided, and the protruding shaft-shaped work is further pressed between the bending position and the other forging position. A forging machine, which is provided with a transfer member for transporting to the.