JPH02229638A - Forging machine - Google Patents

Abstract

PURPOSE:To form a transfer mechanism of driving force of a forging machine by a structure being concise and having a high transfer efficiency by connecting a turnable eccentric shaft, a forward/backward movable actuator and a slide which can fix a forming tool to one end of an oscillating link, the other end thereof, and the middle part thereof, respectively. CONSTITUTION:At the time of forging a stock, a forming tool 2 is fixed to the tip part of a slide 3, and thereafter, a worm wheel 14 is turned, a screw shaft 15 is moved forward or backward, a link 10 is moved through a connecting member 12, and a position of a pin 5 for supporting the slide 3 is adjusted. When the link 10 moves, an oscillating link 4 connected through a pin 11 to the link 10 turns centering around a pin 8, therefore, the slide 3 connected through the pin 5 to the oscillating link 4 moves forward or backward together with the forming tool 2. Subsequently, an eccentric shaft 6 is turned, a link 7 is brought to reciprocating motion continuously, the oscillating link 4 connected through the pin 8 to the link 7 oscillates centering around the pin 11, the slide 3 is brought to reciprocating motion continuously together with the forming tool, and the stock is forged.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a forging machine.

[Prior Art] Fig. 28 shows a conventional forging machine a, which has a frame b having a desired shape, a sleight d to which a forming tool C is fixed to the front end, and a screw shaft e that can move forward and backward. The adjustment mechanism r is slidably inserted into the rear surface of the slide d through a seat so that the front end of the screw shaft e can come into contact with it, and the rear end of the slide 9 of the position adjustment mechanism r is arranged in the frame b. The link 1 of the provided reciprocating mechanism h is connected.

The reciprocating mechanism h is for reciprocating the forming tool C, and has an eccentric shaft j rotated by a drive device (not shown).
The link 1 is connected to the eccentric part of.

The link I has a position adjustment mechanism r as the eccentric shaft j rotates.
reciprocate with a constant stroke.

The position adjustment mechanism r is for adjusting the reciprocating position of the forming tool C, and has a screw shaft e extending in the direction of movement of the forming tool C screwed into a nut t fixed to the slide g.

A spline k is provided at the rear end of the screw shaft e, and the screw shaft e is a worm wheel that is pivotally supported within the slide 9 by the spline k.
is fitted.

Warm foil! is fitted with a worm wheel connected to a drive device (not shown), and the screw shaft e is fitted with a worm wheel! As the screw shaft e rotates, the screw shaft e moves in the axial direction and comes into contact with the back surface of the slide d, and the forming tool C is moved in the forward direction together with the slide d, or is moved away from the back surface of the slide d.

Further, a counterbalance cylinder 0 is connected to the slide d via a lever n, and an accumulator p connected to the counterbalance cylinder 0 causes the back surface of the slide d to always be connected to the screw shaft of the position adjustment mechanism r. e It is in contact with the front end.

Therefore, when the forging machine a is in operation, the reciprocating mechanism h overcomes the pressing force of the counterbalance cylinder 0 to bring the slide d into contact with the screw shaft e of the position adjustment mechanism r, and slides the forming tool C. d, and when the position adjustment mechanism r is moved backward by the reciprocating mechanism h, the counter balance cylinder 0 is moved forward by the reciprocating mechanism h.
While bringing the back surface of the slide d into contact with the screw shaft e of the slide d, the slide d and the forming tool C are moved back following the position adjustment mechanism r.

FIG. 29 shows another conventional forging machine q, in which parts with the same reference numerals as in FIG. 28 represent the same parts.

In the forging machine q, a slide d having a forming tool C fixed to the front end thereof and a reciprocating mechanism h are slidably inserted into a frame r having a desired shape, and a link of the reciprocating mechanism h is attached to the rear end of the slide d. A position adjustment mechanism f having a screw shaft e that can move forward and backward is inserted into the frame r so that the screw shaft e can come into contact with the back surface of the slide S of the reciprocating mechanism h.

Further, a counterbalance cylinder 0 is connected to the slide d via a lever n, similar to the forging machine a, and an accumulator p connected to the counterbalance cylinder 0 constantly controls the back surface of the slide S. It is in contact with the screw shaft e of the position adjustment mechanism r.

[Problems to be Solved by the Invention] However, in the forging machine a shown in FIG. 28, when the forging machine a is in operation, the position adjustment mechanism r is constantly in contact with the slide d to which the forming tool C is fixed. with frame b
Since the molding tool C reciprocates within the position adjustment mechanism r, the impact force from the forming tool C is directly transmitted to the position adjustment mechanism r, and there is a risk that the position adjustment mechanism r may malfunction.

In addition, the drive shaft (not shown) connected to the worm m of the position adjustment mechanism r needs to be capable of displacement as the position adjustment mechanism ``reciprocates'', which complicates the configuration of the device and causes failures. likely to cause an outbreak.

Furthermore, since the position adjustment mechanism r and the reciprocating mechanism h are arranged in series, the size of the device in the axial direction increases.

Similarly, in the forging machine 9 shown in FIG. 29, the impact force from the forming tool C is transmitted to the position adjustment mechanism r via the reciprocating mechanism h,
There is a possibility that a failure may occur in the position adjustment mechanism r.

In addition, the drive shaft (not shown) connected to the eccentric shaft j of the reciprocating mechanism h needs to be able to be displaced when the reciprocating mechanism h moves, which complicates the configuration of the device and increases the risk of failure. likely to cause an outbreak.

Furthermore, like the forging machine a, the position adjustment mechanism r and the reciprocating mechanism h are arranged in series, so the size of the device in the axial direction becomes large.

[Means for Solving the Problems] Among the present inventions, the first invention connects a rotatable eccentric shaft to one end of a swing link via the link, and connects an actuator that can move forward and backward to the other end. and a slide to which a forming tool can be fixed at the tip is connected to the middle of the swing link. Among the present inventions, the second invention is such that a slide fitted with a rotatable eccentric shaft is slidably abutted on one end of the swing link, and an actuator that can move forward and backward is mounted on the other end of the swing link. It has a structure in which a slide to which a forming tool can be fixed to the tip is connected in the middle of the front swing link.

Among the present invention, a third invention provides the forging machine of the first and second inventions in such a way that the axis of each slide is located in the same plane, and the tip of each slide is directed to a point within the plane. It has a configuration in which multiple devices are installed.

[Operation] By moving the actuator forward and backward, the position where the slide reciprocates via the swing link is adjusted, and by rotating the eccentric shaft, the slide moves back and forth via the swing link to forge the material. Process.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

In addition, in FIGS. 1 to 27, parts given the same reference numerals represent the same parts.

1 to 10 show an embodiment of the first aspect of the present invention, in which a slide 3 to which a forming tool 2 can be fixed at the tip is slidably inserted into a frame 1 having a desired shape, An intermediate portion of a swing link 4 is connected to the slide 3 via a pin 5.

An eccentric shaft 6 is rotatably supported within the frame 1, and one end of a link 7 is fitted to the eccentric portion of the eccentric shaft 6.
The other end is connected to one end of the swing link 4 via a pin 8.

A gear 9 is fixed to the lower end of the eccentric shaft 6.
is engaged with a gear of a drive device (not shown).

A link 10 is connected to the other end of the swing link 4 that is not connected to the link 7 through a pin 11, and the link IO
and the connecting member 12 are connected via the bottle l3.

The connecting member I2 is arranged within the frame I so as to be movable parallel to the slide 3.

A worm wheel 14 fitted with a worm (not shown) is supported at the rear end of the frame 1 so as to be rotatable in a vertical plane orthogonal to the axis of the slide 3, and the axial center of the worm wheel 14 A screw shaft I5 extending parallel to the slide 3 is screwed into the female threaded portion provided in the slide 3, and the front end of the screw shaft 15 is fixed to the back surface of the connecting member I2 to form an actuator 83.

Furthermore, a counterbalance cylinder 17 having a piston rod 16 that can move forward and backward in a direction parallel to the slide 3 is disposed at the rear end of the frame 1 so that the piston rod 16 faces the rear of the frame 1, and the piston rod 1G
A forging machine 25 is formed by fixing an extrusion member 8 to the rear end surface of the slide 3 at the tip thereof.

A conduit 22 capable of sending pressure oil from a hydraulic pump 21 is connected to the piston side liquid chamber l9 of the counterbalance cylinder 17 via a check valve 20, and the piston side liquid chamber 19 and the check valve 2o of the conduit 22 are connected to each other. An accumulator 23 and a relief valve 24 are connected between the two.

According to the above configuration, when forging a material, after the forming tool 2 is fixed to the tip of the slide 3, the worm wheel 14 is rotated by a drive device (not shown), and the screw shaft 15 is moved forward. Or move the link IO through the connecting member 12 by moving the slide 3 backward.
Adjust the position of pin 5 that supports.

When the link 10 moves, the swing link 4 connected to the link 10 through the pin 1 rotates around the pin 8, so the slide 3 connected to the swing link 4 through the pin 5 rotates. It moves forward or backward together with the forming tool 2.

Next, the eccentric shaft 6 is rotated by a drive device (not shown) to cause the link 7 to continuously reciprocate.

When the link 7 continuously reciprocates, the pin 8 is attached to the link 7.
The swing link 4 connected through the swing link 4 swings around the pin l1, and the slide 3 continuously reciprocates together with the forming tool 2 to forge the material.

Also, at this time, the pressing member 18 is pressed against the accumulator 23.
The slide 3 is pushed in the backward direction by the pressure oil accumulated in the slider 3, thereby absorbing play in each connecting portion and preventing noise from being generated from each movable portion.

In the present invention, since the eccentric shaft 6 for reciprocating the link 7 and the screw shaft 15 for moving the position of the swing link 4 are both supported by the frame I, the driving force transmission mechanism is simple and easy to transmit. It has a highly efficient structure,
Furthermore, compared to conventional devices, the vibrations and shocks that the driving force transmission mechanism receives during operation of the device are reduced, making it possible to increase the reliability of the device.

Also, a link and an eccentric shaft 6 for reciprocating the slide 3, and a link 10 for adjusting the position of the slide 3.
Since the screw shafts 15 and 15 are not arranged in series, the dimension of the slide 3 of the forging machine 23 in the axial direction can be reduced.

Furthermore, the axes of the eccentric shaft 6 and the warm foil l4 do not move when the slide 3 is reciprocated or when the position of the slide 3 is adjusted, so the structure of the driving force transmission system is simplified and maintenance is facilitated. I can do it.

FIG. 11 shows another example of the counterbalance cylinder according to the embodiment of the first invention, in which a cavity 2G of a desired shape is bored in the rear end of the slide 3, and a tip end is provided in the cavity 26. A piston rod 28 having a piston 27 is inserted thereinto to form a counterbalance cylinder 29 at the rear end of the slide 3.

The piston rod 28 is fixed to the frame 1 via an arm 3o and a bolt 3l, and a hydraulic circuit similar to that described above is connected to the piston rod side liquid chamber 32 of the counterbalance cylinder 29 via a liquid passage 33 bored in the piston rod 28. It is connected. According to the above-described configuration, the counterbalance cylinder 29 also has the counterbalance cylinder l.
It can have the same effect as 7.

FIG. 12 shows another example of the position adjustment mechanism according to the embodiment of the first invention, in which a slide 35 is mounted parallel to the slide 3 shown in FIG. 1 on a support member 34 fixed to the rear end of the frame 20. and the rear end of the slide 35 and the support member 3
A screw shaft 37 is screwed into the internal thread provided at the axial center of the slide 35, and the front end of the screw shaft 37 is inserted into the connecting member 12 so as to form a liquid chamber 36 between the slide 35 and the slide 35. It is rotatably fitted to the rear end.

Spline 3 near the rear end of the screw shaft 37
8 is provided, and the screw shaft 37 is fitted into a worm wheel 39 which is rotatably supported at the rear end of the support member 34 by a spline 38, and the worm wheel 39 is inserted through a worm 40 as shown in the figure. connected to a drive that is not connected.

Further, a hydraulic circuit similar to that shown in FIG. 10 is connected to the liquid chamber 3θ.

The pressure in this hydraulic circuit is set to allow the following:

In other words, when a reaction force that exceeds the capacity of the forging machine is applied, the oil in the liquid chamber 36 is pushed out to the accumulator 23, and the piston 35 moves in the direction to absorb the reaction force, causing a load that exceeds the capacity of the forging machine to act. The pressure is set to prevent problems such as damage.

According to the above-mentioned structure, the same effect as the position adjustment mechanism of the embodiment of the first invention can be achieved, and the slide 3
If the forging machine is about to receive a reaction force that exceeds its capacity, this can be suppressed to below the capacity and damage to the forging machine can be prevented.

This type of overload protector also has the great advantage of quickly returning to its original state once the load is removed, allowing forging operations to continue without damaging the material. It is.

FIG. 13 shows another example of the position adjustment mechanism according to the embodiment of the first invention, in which the other end of a columnar body 41, one end of which is formed in a hemispherical shape, is fixed to the rear end of the connecting member 12. and the columnar body 4
1 is inserted into a ram 42 formed into a spherical seat whose inner surface can encompass the hemispherical end, and the ram 42 is slid in parallel to the slide 3 into a cylinder 43 fixed to the rear end of the frame 1. It is inserted as much as possible.

Further, a servo valve 44 is fixed to the rear end of the support member, and the cylinder 43 and the ram 42 are connected via the servo valve 44.
A liquid chamber 45 formed between the two communicates with a pressure oil source (not shown).

According to the above configuration, the reciprocating position of the slide 3 can be adjusted by hydraulic pressure, and the pressure oil in the liquid chamber 45 is transmitted from the slide 3 via the swing arm 4 to a level exceeding the capacity of the forging machine. It can also be made to act as an overload protector against the reaction force of.

FIG. 14 shows another example of the position adjustment mechanism according to the embodiment of the first invention, in which one end has a shape that can be fitted with the pin 11,
Further, the pin 11 and the ram 42 are connected via a connecting member 46 whose other end is formed into a hemispherical end similar to the columnar body 41.

According to the above-described configuration, the same effect as the position adjustment mechanism shown in FIG. 13 can be achieved.

Further, in the case of the position adjustment mechanism shown in FIGS. 13 and 14, forging can be performed by hydraulic pressure by stopping the rotation of the eccentric shaft and controlling the cylinder 43 by hydraulic pressure.

FIG. 15 shows another example of the reciprocating mechanism using the eccentric shaft according to the embodiment of the first invention, in which the eccentric shaft 6 shown in FIG.
A cylinder 47 is provided in place of the link 7, and the cylinder 4
7, a hemispherical end of a connecting member 49 is inserted into the ram 48, and the connecting member 49 is connected to the swing link 4 via a pin 1l.

Note that 82 in the figure indicates a liquid chamber.

Further, the cylinder 47 is provided with a servo valve 44 and receives pressure from a hydraulic source (not shown) to cause the ram 48 to reciprocate.

In this case, the position of the slide 3 can be detected by a device for detecting the position of the slide 3, for example, a position detecting device (not shown) using a Magnescale, etc., and the slide 3 can be reciprocated within a certain set range.

By combining such a reciprocating mechanism with a stroke position adjustment mechanism shown in FIG. 12, for example, the stroke of the liquid chamber 82 can be reduced, the adverse effects of the compressibility of oil can be suppressed, and the reciprocating stroke can be increased. You can make a forging machine that can be adjusted from small to large.

16 to 18 show other embodiments of the first aspect of the present invention, in which a rectangular parallelepiped slide block 50 having a pin 11 portion is connected to the swing link 4 via a pin l1 portion, The slide block 5 is attached to the slide block 50.
A guide block 52 having a support portion 51 having a shape that can be fitted with the slide block 50 is fitted so that the slide block 50 can slide in a direction perpendicular to the axis of the slide 3.

The support portion 5l of the guide block 52 is formed in a shape that can come into contact with the front and rear end surfaces of the slide block 50 in the movement direction of the slide 3 and the side surface of the slide block 50 on the pin 11 side, and is aligned with the slide 3 axis at the front end of the guide block. A guide 53 formed parallel to the slider 1 is slidably inserted into a hole 54 bored in the front end of the frame l parallel to the three axes of the slide.

At the rear end of the frame 1, a screw shaft 37 of a position adjustment mechanism formed in the same manner as shown in FIG.

A protrusion 55 having a desired shape is formed on the side surface of the slide block 50 opposite to the bottle 11, and a guide plate 5B extending in the axial direction of the slide 3 is formed on the protrusion 55.
is fixed.

Slide 3 formed by the protrusion 55 and guide plate 56
A guide rail 58 extending in the axial direction of the slide 3 fixed to the frame 1 is fitted into the recess 57 extending in the axial direction.

Further, a counterbalance cylinder 60 having a piston rod 59 movable in the same direction as the slide 3 at the rear end of the frame 1 is provided, and the piston rod 59 is connected to an arm 81 fixed to the rear end of the slide 3.

Note that 62 in the figure indicates a liquid chamber.

According to the above-described configuration, when it is desired that the slide 21 move forward in its reciprocating position, the shaft 37 is rotated in the direction in which the shaft 37 moves forward via the worm 40 and the worm wheel 39 by a drive device (not shown). move it,
The tip of the shaft 37 is brought into contact with the rear end of the guide block 52 to push the guide block 52 forward.

When the guide block 52 is pushed forward, the slide block 50 slides within the support portion 5l of the guide block 52 in the axial direction of the swing link 4, and moves in the axial direction of the slide 3, and the swing link 4 The slide 3 rotates in the forward direction.

In addition, when it is desired to move the slide 3 backward in its reciprocating position, the shaft 37 is moved by a drive device (not shown).
is rotated in the direction in which the shaft 37 is moved backward.

At this time, if pressure oil is supplied in advance to the liquid chamber 62 from a pressure oil source (not shown), the counterbalance cylinder 60
moves the slide 3 backward and rotates the swing link 4 around the pin 8, and as the swing link 4 rotates, the slide block 50 moves toward the support portion 5l of the guide block 52.
While sliding in the axial direction of the swing link 4, the shaft 3
7, the slide 3 moves back in the axial direction.

FIG. 19 shows an embodiment of the second aspect of the present invention, and shows the front surface of a slide B3 in which an eccentric portion of an eccentric shaft 6 is fitted into the rear surface of the end of the swing link 4 instead of the pin 8 and link 7. The two are brought into contact so that they can slide.

According to the above-mentioned configuration, the slide 63 is always in contact with the back surface of the end of the swing link 4 due to the counterbalance cylinder as shown in FIG. The slide 3 is reciprocated via the swing link 4 while sliding on the rear surface of the end portion of the slide 3.

20 to 23 show an embodiment of the third invention of the present invention, and this embodiment is a four-sided forging machine in which four forging machines 25 shown in an embodiment of the first invention are combined. , the swing links 4 of each forging machine 25 can swing on the same plane, and the axes of each slide 3 are 90 degrees within the same vertical plane.
They are arranged so that each 0@ faces a different direction.

Each eccentric shaft IO is connected to an output shaft 70 of the reducer 69 via gears 29, 65, 68, 67 and a coupling 68, and one end of the input shaft 7l of the reducer 69 is connected via a coupling 72. A motor 73 is connected, and a flywheel 74 is fixed to the other end of the output shaft 70 and the input shaft 7.
The output shaft 70 and the input shaft 71 are connected to each other through gears 75 and 78 having different numbers of teeth, respectively.

Further, the input shafts 71 of adjacent reduction gears 69 are connected to each other via a bevel gear 77 and a connecting shaft 78 for synchronous rotation.

According to the above-described configuration, the rotational force of the motor 73 is transmitted through the speed reducer B9.
This is transmitted to the eccentric shaft 6 via the gears 87, 118, 65.9, and the slide 3 reciprocates to forge the material.

At this time, the input shaft 7l of each reducer 69 is connected to the bevel gear 77.
Since the slides 3 and 3 are connected via the synchronous rotation connecting shaft 78, the slides 3 reciprocate in the same synchronous manner.

24 to 26 show other embodiments of the third invention of the present invention, in which four forging machines 25 shown in the embodiment of the first invention are combined to produce a four-sided forging machine. In this embodiment, the swing links 4 of each forging machine 25 can swing in a plane perpendicular to the same vertical plane, and the axis of each slide 3 is in the same vertical plane. They are arranged so that they face different directions by 90''.

A bevel gear 77 is fixed to the shaft end of each eccentric shaft 6, and the bevel gear 77 is fitted with a gear 79 fixed to a shaft 78 rotatably supported by the frame 1.

The shaft 78 extends in the same direction as each eccentric shaft B, and has a bevel gear 80 fixed to its end.

The bevel gear 80 is the bevel gear 80 of the adjacent forging machine 25.
One of the shafts 78 is connected via a coupling 81 to a reduction gear of a drive device (not shown).

According to the above configuration, the rotational force from the drive device (not shown) transmitted through the coupling 81 is transmitted to the eccentric shaft 6 through the bevel gear 80, the shaft 78, the gear 79, and the bevel gear 77, so that the slide 3 It reciprocates to cast the material.

In this embodiment, each slide 21 reciprocates at the same period as in the embodiment of the third invention.

FIG. 27 shows another embodiment of the third invention of the present invention, in which the forging machine 25 shown in the embodiment of the first invention is
In this embodiment, the swing links 4 of each forging machine 25 can swing in a plane perpendicular to the same vertical plane, and the axis of each slide 3 are arranged so that they each face different directions by 45 degrees within the vertical plane.

In this embodiment, since the swing links 4 of each forging machine 25 are arranged so as to be able to swing in a plane perpendicular to the same vertical plane, the forging machines 25 do not interfere with each other and can be easily moved. A multi-sided forging machine can be formed.

It should be noted that the forging machine of the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

C Effects of the Invention As explained above, the forging machine of the present invention can provide various excellent effects as described below.

1) Since the eccentric shaft for reciprocating the link and the screw shaft for moving the position of the swing link are both supported by the frame, the driving force transmission mechanism is simple and has a structure with high transmission efficiency, and Compared to conventional devices, the vibrations and shocks that the driving force transmission mechanism receives during operation of the device are reduced, making it possible to increase the reliability of the device.

2) Since the reciprocating mechanism and the position adjustment mechanism are not arranged in series, it is possible to reduce the size of the forging machine slide in the longitudinal force direction.

3) Since the axis of the shaft system that drives the reciprocating mechanism and the position adjustment mechanism does not move, no failure occurs in the driving force transmission system, and maintenance and inspection can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the first invention, FIG. 2 is a view from the ■1■ arrow in FIG. 1, and FIG. 3 is a plan view of an embodiment of the first invention.
- ■ Arrow view, Figure 4 is the rV-IV arrow view of Figure 3, Figure 5
The figure is the ■-■ arrow view in Figure 1, and Figure 6 is the Vl-V view in Figure 5.
Fig. 7 is a view taken from the ■-■ arrow of Fig. 5, Fig. 8 is a view taken from the ■-■ arrow of Fig. 6, Fig. 9 is a view taken from the IX-IX arrow of Fig. 8, Fig. 10 is a sectional view of a counterbalance cylinder, Fig. 11 is a sectional view of another example of the counterbalance cylinder of an embodiment of the first invention, and Fig. 12 is a position adjustment of an embodiment of the first invention. A sectional view of another example of the mechanism, FIG. 13 is a sectional view of another example of the position adjustment mechanism of one embodiment of the first invention,
4 is a sectional view of another example of the position adjustment mechanism according to the embodiment of the first invention, FIG. 15 is a sectional view of another example of the reciprocating mechanism according to the embodiment of the first invention, and FIG. 16 is a sectional view of another example of the reciprocating mechanism according to the embodiment of the first invention. 17 is a plan view of another embodiment of the first invention of the present invention, FIG. 17 is a view taken from the 818 arrow in FIG. l9
The figure is a plan view of an embodiment of the second invention of the present invention, FIG. 20 is a sectional view of an embodiment of the third invention of the present invention, and FIG. Fig. 22 is a cross-sectional view of the drive system in Fig. 20, and Fig. 23 is a cross-sectional view of the drive system in Fig. 22.
XII[-XXDI arrow view, FIG. 24 shows the present invention,
Cross-sectional view of a four-sided forging machine according to another embodiment of the third invention, No. 25
The figure is a XXV-XXV arrow view in Fig. 24, and Fig. 26 is a view from the XXV-XXV arrow in Fig. 24.
4 is a cross-sectional view of the drive system, and FIG.
FIG. 28 is a plan view of an example of a conventional forging machine, and FIG. 29 is a plan view of another example of the conventional forging machine. In the figure, 2 is a forming tool, 3 is a slide, 4 is a swing link,
6 is an eccentric shaft, 7.10 is a link, 12 is a connecting member, 15
25 is a screw shaft, 25 is a forging machine, 28 is a piston rod, 37 is a screw shaft, 42.48 is a ram, 50 is a slide block, 52 is a guide block, 63 is a slide, 64 is a leaf spring, and is an actuator. Figure 1 Patent applicant Ishikawajima Harima Heavy Industries Co., Ltd.

Claims (1)

[Scope of Claims] 1) A rotatable eccentric shaft is connected to one end of the swing link via the link, and an actuator that can move forward and backward is connected to the other end, and a tip end is connected to the middle of the swing link. A forging machine characterized by connecting a slide to which a forming tool can be fixed. 2) A slide fitted with a rotatable eccentric shaft is slidably abutted on one end of the swing link, an actuator that can move forward and backward is connected to the other end of the swing link, and the swing link is A forging machine characterized by connecting a slide in the middle to which a forming tool can be fixed at the tip. 3) A plurality of forging machines according to claims 1 and 2 are arranged such that the axis of each slide is located in the same plane, and the tip of each slide faces one point in the plane. Forging machine.