JPH11216535A - Transfer device of forging press machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new clamp, unclamp mechanism and seek a reduction of a load of a driving source. SOLUTION: This is a transfer device for a forging press machine to transfer a workpiece to a pressing position in sequence by holding the workpiece with fingers of a beam F, after moving the beam F to up/down, left/right and forward/backward directions. An up/down movement of the beam is carried out by a combination of a pinion 36 and a rack 34, whereby as the rack is movable in a shaft direction of the pinion, a forward/backward movement is absorbed. The forward/backward movement (clamp, unclamp) has the beam F move forward/backward via a transfer body 21 by engaging the pinion 23 with the rack 22 being in parallel. By a combination of the pinion and the rack, a forward/backward stroke can be extendable within a given space. A left/right movement of the beam is also made by a combination of pinions 48, 49 and a rack 47. Combination of a pinion and a rack is made with an inexpensive structure, and the driving source thereof M1 , M2 , M3 can be made to be a small number. In this case, an up/down movement, a left/right movement and a forward/backward movement of the beam are disconnected each other, resulting in reducing the load of the driving sources.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device for a forging press.

[0002]

2. Description of the Related Art For example, a forging press A with a transfer device will be described with reference to FIGS.
Each of the press positions P ₁ , P ₂ , P ₃ , P ₄ , and P ₅ is defined above, and the operation of gripping the workpiece a with the finger b of the beam F that moves up, down, left, right, and back and forth of the transfer device B (pinching operation) By repeating the releasing operation, the workpiece a is sequentially shifted to each of the press positions P ₁ ,. At this time, the workpiece a is supplied to the press position P ₁ or previous position P _0, the press complete article (paid out) carried away from the press position P _5. The carry-out is transferred to a conveyor by a suitable means and moved to a required position.

A transfer device B of a forging press A of this type includes a frame G at both ends of the forging press A.
And the pair of front and rear beams F, F are passed between the two frames G, G, and the driving means provided on the frame G causes the two beams F, F to be vertically moved (Z direction)
It generally moves in the front-back direction (Y direction) and the left-right direction (X direction), that is, three-dimensionally.

[0004] By the vertical movement of the beam F,
The workpiece a is put into and taken out of the lower mold Q (lift-down operation), and the fingers b are brought into and out of contact by the movement of the two beams F and F in the front-rear direction to pinch or separate the workpiece a ( The workpiece a is sent to the next step and retracted by the movement of the beam F in the left-right direction (advance return operation).

The three-dimensional movement (movement) drive system can be roughly classified into the following three types, and special types include combinations of the following types. , A drive system with a configuration of a cylinder using oil pressure as a drive source, a drive system with a configuration in which the rotation of a crankshaft of a forging press is guided to a frame G by meshing gears and a cam for moving a beam F is moved, Drive system with a combination of ball screw and linear guide, or a combination of rack and pinion.

The above-mentioned drive system has a disadvantage that the hydraulic system is slow in speed, and the pneumatic system has a disadvantage that the speed cannot be controlled. Further, a common problem of this hydraulic drive system is that since the stroke amount of the three-dimensional operation is determined and fixed at the cylinder end, there is no flexibility, and it is not possible to synchronize the movement (stroke) of the cylinder. It requires extremely advanced technology.

The problem with the drive system is that it is mechanically interlocked, so that the drive system is large and expensive, and because the drive system is large, the speed cannot be increased and the stroke amount of the three-dimensional operation cannot be increased. Also have to be fixed.

[0008] The drive system of this type has precision control and flexibility of three-dimensional operation using a servo motor as a drive source, and is most frequently used today.

As a prior art using such a drive system, Japanese Patent Laid-Open Publication No. Hei 6-31358 (Japanese Patent Laid-Open Publication No.
No. 150 (publication 2) and JP-A-61-99530 (publication 3).

[0010]

When the transfer device B using the drive system described above is incorporated into the forging press A, the frame G is provided on both outer sides of the forging press A, so that the range of movement of the beam F in the front-rear direction is limited. , Between the front and rear columns H and H of the press machine A. On the other hand, in this drive system, the contacting / separating mechanism of the beams F, F by the ball screw generally cuts reverse screws on both sides of the center of the rotation axis as a boundary.
The support bearing of the beam F is screwed to each screw. For this reason, the movement amount (stroke) of the beam F in the front-back direction is from the inside of the column H to the center of the rotation axis,
Since a bearing or the like is provided at the center of the rotating shaft, the stroke is shortened by the width of a structure such as the bearing. When the stroke of the beam F is small, it is difficult to cope with the size (external shape) of the forged product. For this reason, in the small forging press A, since the gap between the front and rear columns H, H is small, the transfer device B may not be installed.

The combination of the ball screw and the linear guide guarantees precise driving, but in order to obtain the assurance, high precision machining is required for the frame G (case 10) for mounting the ball screw and the niria guide. So that
The frame G naturally has a high rigidity, and further high-level operation adjustment is required, so that it is inevitably an expensive device.

Further, the three-dimensional operating mechanism generally has a configuration in which one operating mechanism is provided with another operating mechanism, and another operating mechanism is provided with another operating mechanism. The operation mechanism of (1) also moves the other two operation mechanisms together, and the middle operation mechanism moves the other one operation mechanism together. Moving this other mechanism integrally, that is, holding another operating mechanism, increases the load as compared to the operation of itself, and requires the use of a large drive source, for example, a servo motor. No cost increases. Also, when the load increases, the inertia force also increases, and the controllability also deteriorates.

As described above, in order to avoid holding other operation mechanisms, it is only necessary to adopt a configuration in which each operation mechanism is separated from each other. In general, the lift-down mechanism moves the beam F right and left and front and rear. The clamp / unclamp mechanism supports the beam F movably up and down and left and right, and the advanced return mechanism supports the beam F movably up and down and back and forth.

Based on this idea, various types of the above-mentioned movable support structure have been devised. Among them, a slide bearing is generally used. In addition, the edge cutting is performed by correcting the fluctuation due to the rolling. With this technology,
The means using the pinion rack is employed in a lift-down mechanism.

[0015] However, the technique described in Japanese Patent Publication No.
There are four motors for unclamping, four motors for lifting and lowering, and one motor for advanced return, and these nine motors must be controlled synchronously. In addition, since eight motors must be controlled in order to correct the fluctuation due to the rolling of the pinion, the control becomes more complicated.

In the technique described in Japanese Patent Laid-Open Publication No. H11-209, each operating mechanism is cut off from each other to reduce the number of drive motors. However, the cut-off structure is complicated, and an equalizer shaft for lift and clamp is provided. Since it is long, there is a problem in accuracy because it is twisted.

The first object of the present invention is to provide a long stroke of the beam in the front-rear direction under the above-described circumstances, and a second object of the present invention is to provide a novel one for performing the above-mentioned edge cutting. A third object is to provide a practical transfer device with a small load on each operation mechanism.

[0018]

In order to achieve the first object, the present invention provides a pair of beams and an integrated pair of racks arranged in parallel, and the same pinion is engaged with both racks. By rotating the pinion, both racks were moved in opposite directions.

With this configuration of the rack and the pinion, the two racks can move in a narrow space because they move in an overlapping state, and the movement of the rack can take a long stroke in the front-back direction of the beam due to the movement of the beam. It will be.

In order to achieve the second object, the present invention allows the beam to move in one direction by moving the rack relative to the pinion in the axial direction of the pinion. At this time, for example, if the pinion is a spur tooth and the thickness (axial length) of the pinion is longer than the above-mentioned movement amount, the meshing does not come off (see the embodiment).

Further, in order to achieve the third object, the present invention employs an embodiment which will be described later such as adopting both of the above-mentioned solving means.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In one embodiment according to the present invention for achieving the first object, a pair of beams at a plurality of press positions in series along the column direction are moved up and down, left and right, and back and forth. A transfer device of a forging press machine for repeatedly moving an object to be pressed to each of the press positions by repeating an operation of pinching and an operation of separating the object by the fingers of the beam. The means for moving and contacting and separating are arranged in parallel with racks provided at right angles to the length direction of each beam, and between the two racks,
A pinion meshing with both of them is provided, and the racks are moved in opposite directions by rotating the pinion.

With this configuration, even if the forward and backward movement of the beam is limited between the front and rear columns of the forging press, the beam can be moved at the full interval, and the beam can have a sufficient stroke. For this reason, the range of correspondence to the size of the forged product is widened. This can be handled even when the front and rear column gaps are small with a small forging press.

An embodiment according to the present invention for achieving the second object is a transfer device for a forging press machine similar to the above, wherein at least one of the means for moving the beam up and down, left and right, and back and forth is a beam. A rack that moves integrally with the rack, and a pinion that is rotated while meshing with the rack. The movement of the rack F in the axial direction of the pinion with respect to the pinion absorbs the movement of the beam F by other moving means. It can be configured.

For example, if this configuration is adopted for a lift-down mechanism, the lift-down mechanism does not require much accuracy, and therefore, can be an inexpensive lift-down mechanism having an edge drive mechanism.

An embodiment according to the present invention for achieving the third object is a transfer device of a forging press similar to the above, in which frames of the transfer device are provided at both left and right ends of the forging press, respectively. Before and after the frame, a front-rear movable body that can move only in the front-rear direction is provided, and an elevating body that is movable only in the up-down direction is provided on each front-rear moving body. The beam is vertically movably supported only in the length direction. The beam vertical moving means is provided with a servo motor driven front-rear rotation shaft on the frame, and engages a pinion of the rotation shaft with a vertical rack of the elevating body. Along with the pinion, the rack is engaged with the pinion so as to move in the axial direction of the pinion,
The beam forward / backward moving means is provided with racks in the front / rear direction on both front / rear moving bodies of the respective frames, and the racks are arranged in parallel, and by rotating a pinion for driving a servo motor meshing with the racks, The two racks are moved in opposite directions, and the beam left and right moving means moves the left and right moving bodies which support the ends of the both beams on the both frames movably only in the front and rear and up and down directions, respectively. It can be freely provided, and a pinion driven by a servomotor is provided on one frame, and a rack in the left-right direction provided on the front-rear and left-right moving body is engaged with the pinion.

With this configuration, the functions and effects of the above-described two embodiments are exhibited, and the operation mechanism of each beam becomes a new one that is cut off from each other, which is practical.

In this structure, a balance cylinder for applying an upward urging force is provided between the front-rear moving body and the elevating body provided on the front-rear moving body, and a servo motor for rotating the rotating shaft of the elevating body is provided. It is advisable to reduce the load. The balance cylinder urges the elevating body (beam etc.) upward to balance, so the load at the time of elevating is reduced,
This reduction can reduce the size of a drive source, for example, a servomotor.

[0029]

FIG. 1 is a schematic partially cut plan view of a forging press with a transfer device according to one embodiment, FIG. 2 is a schematic partially cut front view thereof, FIG. 3 is a front view of the transfer device, and FIG. FIG. 5 is a schematic perspective view of the left transfer drive section of FIG. 3, FIG. 5 is a schematic perspective view of the right transfer drive section of FIG. 3, and FIG.
7, FIG. 7 is a plan view taken along line I of FIG. 6, FIG. 8 is a plan view taken along line II, FIG. 9 is a plan view taken along line III of FIG.
0 is a right side view cut along the line IV, FIG. 11 is a right side view cut along the line V, FIG. 12 is a bottom view of FIG. 4, FIG. 13 is a left side view of a main part cut of FIG. 4, and FIG. It is a front view.

As described above, the forging press A with the transfer device B according to this embodiment has five upper and lower dies P _1.
Comprising a ~P _5, Q ₁ ~Q _5, by repeating vertical and horizontal and release action and operation of sandwiching the workpiece (billet) a by fingers b of the beam F, which moves back and forth of the transfer feed device B, the workpiece Let a be each mold P ₁ , Q ₁ …
And one after the other to shift between P _5, Q _5, the pressing.
Hereinafter, the descending positions of the upper dies P _{1 to} P ₅ will be referred to as P _{1 to} P ₅ as press (process) positions.

At the time of this press working, a billet a from an induction heater is supplied by a billet supply device (not shown).
There sent in response to the press operation to the position P ₀ before forging presses A, by the billet a is a transfer device B, and is sent in sequence to each press position P ₁ to P _5, the product a
It is assumed to be ₅ . In other words, the billet a at the front position P ₀ is stubbed at the first press position P ₁ , and the second press position P
Rough finishing at _2, molded by the third press position P _3, the precision finishing fourth press position P _4, the fifth press position P
_{In step 5} , the inner and outer burrs are simultaneously punched.

The transfer device B is provided with a frame G in each of the left and right columns H of the forging press A, and passes a pair of beams F, F between the frames G, G. The beams F, F, as shown in FIGS.
Is moved back and forth, up and down, and left and right by a clamp / unclamp operation mechanism, a lift-down operation mechanism, and an advance return operation mechanism in the casing 10 of FIG. The insides of the casings 10 and 10 on both sides have the same configuration except for the advance / return operation mechanism.

The clamp / unclamp operation mechanism is provided with front and rear moving members 21 movably in the front and rear directions via guide rails 12 before and after the bottom plate 11 of the casing 10. Penetrate movably in the vertical direction (see FIGS. 6 and 14). One end of the beam F is supported at the lower end of the elevating body 31 via a ball spline bearing 32 so as to be movable only in the length direction thereof. A bellows 33 is provided on the lower protruding portion of the elevating body 31 to prevent dust from entering the penetrating portion.

The front and rear moving bodies 21 and 21 are provided with front and rear racks 22 and 22 having one end fixed in parallel in the vertical direction, and the other end of the rack 22 slides on the other front and rear moving body 21. It penetrates freely. This rack 22, 22
Both meshes pinion 23 is provided on the rack during, the pinion 23 is servo motor M ₁ drives the shaft 24
It is stuck to. The shaft 24 is supported by bearings 25a and 25b. Therefore, when the pinion 23 by a servomotor M ₁ is rotated, both racks 22, 22 move to long and short lengths overlap, to and away from both the front and rear mobile 21 in the longitudinal direction. That is, the beams F are moved toward and away from each other, and the workpiece b is clamped or released (unclamped) by the fingers b. Rack 2
2, 22 may be parallel in the horizontal direction.

The lifting / lowering mechanism is composed of the elevating body 3
1, a rack 34 is formed on the upper part,
The pinion 3 of the rotating shaft 35 spanned over the casing 10
6 is engaged. Therefore, when the pinion 36 is rotated by a servo motor M _2, the lifting member 31 via the rack 34 is moved up and down, the beam F is lifted or down.
That is, the beam F approaches and separates from the lower mold Q.

The rack 34 and the pinion 36 are formed of spur teeth, and the rack 34 slides in the axial direction of the pinion 36 to move back and forth with respect to the longitudinal movement of the longitudinal moving body 21 by the clamp / unclamp operation mechanism. Absorb the movement of. For this reason, the axial length of the pinion 36 is set to a length that allows the rack 34 to move. In the figure, reference numeral 37 denotes a bearing for the rotating shaft 35.

The advance / return operation mechanism includes an L-shaped left / right moving body 41 provided on the lower surface of the bottom plate 11 of the casing 10 via a guide rail 42 so as to be movable in the left / right direction. 43, 43 are provided movably in the vertical direction via a guide rail 43a. A longitudinal support shaft 44 penetrates the bearing 43, and the end of the beam F passing through the ball spline bearing 32 is swingably connected to the support shaft 44 via a bearing 45. A portion of the beam F projecting inward from the ball spline bearing 32 is covered with a bellows 46 having a fixed length to prevent dust from entering the bearing 32.

A rack 47 is provided on the upper surface of the horizontal wall of the left and right moving body 41, and a pinion 48 on the bottom plate 11 is engaged with the rack 47. Pinion 48 is meshed with a pinion 49 driven by a servo motor M _3, the pinion 48, 49 is rotated by a servo motor M _3, the left and right moving body 41 through the rack 47 is moved in the lateral direction. That is, the beam F moves left and right, and the finger b moves between the adjacent press positions,
The workpiece a is transferred to the lower mold Q. The beam F
As shown in FIG. 14, a cylinder 51 is provided on the ball spline bearing 32, and the end of the beam F is advanced and retracted in the cylinder 51. The right frame G may be provided with an advance / return operation mechanism, and the left frame G may be a driven side omitting the mechanism.

An air cylinder 55 is provided between the front-rear moving body 21 and the ball spline bearing 32 at the lower end of the elevating body 31, and a pressure of an upward urging force applied to balance the weight of the beam F is applied to the cylinder 55. And beam F
The load at the time of ascent and descent is reduced.

This embodiment is constructed as described above. By controlling the servo motors M ₁ , M ₂ and M ₃ synchronously, a clamp / unclamp operation mechanism, a lift-down operation mechanism and an advanced return operation are performed. The mechanism is moved to move the beams F, F back and forth and up, down, left and right, and the operation of pinching and releasing the workpiece a by the finger b is repeated to shift the workpiece a to each of the press positions P ₁ . .

In this operation, the driving source is a clamp
Two unclamping servomotor M ₁ is, the servo motor M ₂ are two lift-down, a total of five servo motor M ₃ is one for advance-return, the synchronous control is easy.

In the above embodiment, when the advance / return stroke is constant (fixed), as shown in FIG.
For example, it is possible to easily control the speed of the air-hydro converter type and secure a high operation speed. At this time, the stroke amount is fixed, but since the stroke end is determined by the forward end and the rear end of the piston 61, the accuracy of the feed stroke of the workpiece a is also high. In the transfer device B, the accuracy of the advance return (forward / backward of the feed) is most important, and when the stroke is fixed, the hydraulic cylinder 60 is effective.

[0043]

According to the present invention, the parallel racks are moved in opposite directions by one pinion to perform, for example, a clamp / unclamp operation, so that the operation can be performed even in a narrow gap. Stroke can be maximized.

In the present invention, the movement of the beam in one direction is absorbed by the combination of the pinion and the rack, so that the load on the driving source can be reduced with a simple structure.

Further, according to the present invention, the number of drive sources can be reduced and the load can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic partially cut plan view of a forging press with a transfer device according to one embodiment.

FIG. 2 is a partially cut front view of the same schematic.

FIG. 3 is a front view of the transfer device.

FIG. 4 is a schematic perspective view of a left transfer driving unit in FIG. 3;

FIG. 5 is a schematic perspective view of a right transfer driving unit in FIG. 3;

FIG. 6 is a cutaway front view of FIG. 4;

7 is a plan view cut along the line I of FIG. 6;

FIG. 8 is a plan view cut along the line II.

FIG. 9 is a plan view cut along the line III.

FIG. 10 is a right side view cut along the line IV.

FIG. 11 is a right side view cut along the line V of FIG.

FIG. 12 is a bottom view of FIG. 4;

FIG. 13 is a left side view of the main part cut away in FIG. 4;

FIG. 14 is a cutaway front view of FIG. 5;

FIG. 15 is a fragmentary front view of another embodiment.

[Explanation of symbols]

A Forging press machine B Transfer device F beam G frame M ₁ , M ₂ , M ₃ Servo motor P ₁ , P ₂ , P ₃ , P ₄ , P ₅ Press position a Workpiece b Finger 10 Frame casing 21 Front and back moving body 22 Pair of racks 23 Rack pinion 31 Lifting body 32 Beam bearing 34 Rack 35 Rotating shaft 36 Pinion 41 Left and right moving body 43, 45 Bearing 47 Rack 49 Pinion 55 Balance cylinder

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[Procedure amendment]

[Submission date] February 2, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

Further, the combination of the ball screw and linear guide is a precision drive is ensured, in order to obtain the guarantee, the frame G (Case 10) for mounting the ball screw and linear Agaido, machining precision As required
The frame G naturally has a high rigidity, and further high-level operation adjustment is required, so that it is inevitably an expensive device.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

An embodiment according to the present invention for achieving the second object is a transfer device of a forging press machine similar to the above, wherein at least one of the means for moving the beam up and down, left and right, and back and forth is a ram. And a pinion that is rotated in mesh with the rack, the movement of the rack in the axial direction of the pinion with respect to the pinion, i.e., the pinion in mesh with the rack and the pinion.
The on-axis movement may absorb the movement of the beam F by other moving means.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

An embodiment according to the present invention for achieving the third object is a transfer device of a forging press similar to the above, in which frames of the transfer device are provided at both left and right ends of the forging press, respectively. Before and after the frame, a front-rear movable body that can move only in the front-rear direction is provided, and an elevating body that is movable only in the up-down direction is provided on each front-rear moving body, and each elevating body has an end of the beam. The beam is vertically movably supported only in the longitudinal direction, and the beam up and down moving means is provided with a rotating shaft in the front-rear direction of the servomotor drive on the frame, and a pinion of the rotating shaft is used to move the beam vertically. Bite the rack and the pini
The axial length of ON should be equal to or greater than the length of the beam
To, in response to longitudinal movement of the beam, against the pinion, and those to move in the axial direction of the pinion in a state of meshing with the rack, the front and rear moving means of the beam, both before and after each frame The front and rear racks are provided on the moving body so as to protrude, and both racks are arranged side by side.
In addition, both racks are slidably inserted into opposing moving bodies ,
By rotating the pinion of the drive of the servo motor meshing with both racks, the two racks are moved in opposite directions, and the beam left and right moving means moves the ends of the two beams forward and backward to the two frames. A left and right moving body that can be movably supported only in the up and down direction is provided movably to the left and right, and a pinion driven by a servo motor is provided on one frame, and the left and right moving racks provided on the front, rear, left and right moving bodies are engaged with this pinion. The configuration may be a combination of the two.

Claims (4)

[Claims] 1. A plurality of press positions P ₁ , P ₂ , P in series
₃ , P ₄ , P ₅ a pair of beams F, F along its column direction
Is moved up and down, left and right, and back and forth, and the operation of pinching and releasing the workpiece a by the finger b of the beam F is repeated to sequentially move the workpiece a to each of the press positions. A transfer device B of a forging press A, comprising: a rack 22 provided with means for moving the pair of beams F, F back and forth to move toward and away from each other at a right angle in the length direction of each beam F in parallel. A pinion 23 meshing with both racks 22 is provided between the two racks 22, 22. By rotating the pinion 23, the two racks 22,
22. A transfer device for a forging press, wherein 22 is moved in the opposite direction. 2. A plurality of press positions P ₁ , P ₂ , P in series
₃ , P ₄ , P ₅ The pair of beams F, F along the column direction are moved up and down, left and right, and back and forth, and the operation of pinching the workpiece a by the fingers b of the beam F and the operation of separating the same are performed. It is a transfer device B of a forging press A that repeatedly moves the workpiece a to each of the press positions, wherein at least one of the means for moving the beam F up, down, left, right, and back and forth is a beam F. The rack 34 includes an integrally moving rack 34 and a pinion 36 that is rotated by meshing with the rack 34. The movement of the beam F by another moving means is performed by moving the rack 34 in the axial direction of the pinion 36 with respect to the pinion 36. A transfer device for a forging press machine, characterized in that it is absorbed. 3. A plurality of press positions P ₁ , P ₂ , P in series
₃ , P ₄ , P ₅ The pair of beams F, F along the column direction are moved up and down, left and right, and back and forth, and the operation of pinching the workpiece a by the fingers b of the beam F and the operation of separating the same are performed. A transfer device B of a forging press A for repeatedly transferring a workpiece a to each of the press positions, wherein frames 10 and 10 of the transfer device are provided at both left and right ends of the forging press A, respectively; Both frames 10
Front and rear movable body 21, 2 which can move only in the front and rear direction before and after
1 and each of the front and rear moving bodies 21 is provided with an elevating body 31 that is movable only in the vertical direction. Each elevating body 31 supports the end of the beam F so as to be movable only in its length direction. and vertical movement means of the beam F is the longitudinal direction of the rotary shaft 35 of the servomotor M ₂ drive to the frame 10 is provided, chewing the vertical rack 34 pinion 36 and the lift 31 of the rotary shaft 35 At the same time, the rack 34 is moved in the axial direction of the pinion 36 with the rack 34 meshing with the pinion 36. The front and rear racks 21 and 2 respectively
2 is provided, in parallel the two racks 22, by rotating the servo motor M ₁ drives the pinion 23 which meshes on both the rack 22, and for moving the two rack 22 in the phase opposite direction, the The means for moving the beam F from side to side is
10 is provided with a left and right moving body 41 movably supporting the ends of the two beams F movably only in the front and rear and up and down directions, and a pinion 49 driven by a servo motor M ₃ is provided on one frame 10. A transfer device for a forging press, wherein a left-right rack 47 provided on a front-rear, left-right moving body 41 is engaged with the pinion 49. 4. A balance cylinder 55 for applying an upward urging force is provided between the front-rear moving body 21 and the elevating body 31 provided on the front-rear moving body 21, and
Transfer apparatus forging press according to claim 3, characterized in that tried to reduce the load of the servo motor M ₂ to turn.