JP3024002B2 - Punching press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching press, and more particularly, to a punching press provided with a work moving positioning device capable of moving and positioning a work in the X-axis and Y-axis directions at a punching position of the punching press. About.

[0002]

2. Description of the Related Art Conventionally, as a driving means in the X-axis direction of a work movement positioning device for moving and positioning a work in the X-axis and Y-axis directions at a punching processing position of a punching press, a direct connection to a motor or a timing belt is used. In this configuration, the ball screw is rotated to move the X axis. In other words, the rotation is transmitted to the ball screw, and the ball screw converts the rotation into linear motion.

[0003] Also, by rotating a pinion gear with a motor,
A method of converting to linear motion by a rack meshing with the pinion gear has been adopted.

[0004]

By the way, the construction of the work movement positioning device for positioning in the X-axis direction in the conventional punch press described above is a ball screw, a rack, or a pinion type driving means. High accuracy is required for stop positioning
Since the accumulated error is not forgiven, it is expensive.

In the ball screw system, there is a problem that the backlash is reduced and the preload is applied in order to improve accuracy, so that heat is generated, the ball screw is elongated, and noise is generated. Further, since the length of the ball screw is required for the stroke, the length is long, the mounting space is large, and there is a critical speed, so that there is a problem that high speed cannot be achieved and high productivity cannot be expected.

SUMMARY OF THE INVENTION An object of the present invention is to provide a bunching press in which cost is reduced, low noise and heat generation are reduced, high speed and space are saved without using a ball screw in order to solve the above problems. Is to do.

[0007]

In order to achieve the above object, the present invention comprises a work movement positioning device capable of moving and positioning a work in the X-axis and Y-axis directions with respect to a punching processing position of a punching press. A punching press, and a carriage base provided in the work movement positioning device and / or a plurality of clamp members provided on the carriage base are driven by a driving member via a belt member together with the belt member to form the punching press. Fret
It can be moved in the X-axis direction which is the short side direction of the beam .

[0008]

With the use of the punching press of the present invention, a belt member is employed as a mechanism for performing movement positioning in the X-axis direction of the work movement positioning device. That is, the carriage base and / or the driving member are connected via the belt member.
Or before a plurality of clamping members provided on the carriage base
Frame of the punching press together with the belt member
It is movable in the X-axis direction, which is the short side direction .

Since a belt member is used instead of the conventionally used ball screw, cost reduction, no noise and heat generation, high speed and space saving can be achieved.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings.

To facilitate understanding, the overall configuration of a punching press and a work movement positioning device will first be schematically described. Referring to FIGS. 3 and 4, the punch press 1 is provided with an upper frame 3 of a gate-shaped frame 3.
a, a press unit 5 is mounted, and the press unit 5 is driven by a drive unit 7 provided at an upper portion thereof.
A punch 9 is mounted below the press unit 5.

A die 11 is provided directly below the punch 9, and a punching position 13 is on a line connecting the punch 9 and the die 11.

With the above configuration, the drive unit 7 is driven, and the punch 9 is moved up and down by the press unit 5.
The work W is punched in cooperation with the die 11 by the vertical movement of the punch 9.

The punch 9 and the die 11 are connected to the ATC device 1
5 makes it replaceable. The ATC device 15 is composed of an ATC device 17 for punches and an ATC device 19 for dies.
Will be described only.

The punch ATC device 17 is provided adjacent to the punch P so as to hang down on the lower surface of the upper frame 3a of the frame 3. That is, a rail 21 extending in the Y-axis direction (the left-right direction in FIGS. 3 and 4), which is the direction of the long side of the frame, is provided on the lower surface of the upper frame 3a. A movable support block 23 is provided to hang down. The support block 23 is provided with a plurality of support arms 25 projecting therefrom. The support arm 25 can be engaged with and disengaged from the punch 9.

An ATC tool magazine device 27 adjacent to the ATC device 15 is provided. The ATC tool magazine device 27 stores a large number of punches 9 and a storage portion 29 surrounding the upper frame 3 a of the frame 3.
And a plurality of dies 11 are accommodated in the lower frame 3b of the frame 3 and are provided in two upper and lower storage sections 31. Although not shown, the punch 9 or the dies 11 accommodated by a motor or the like are moved. Has become.

In order to exchange the punch 9 and the die 11 with the above configuration, a desired punch 9 and die 11 stored in the ATC tool magazine device 27 are positioned at a position facing the ATC device 15. Then, the support block 23 is moved to the left in FIGS.
The punch 9 and the die 11 are supported by the support arm 25 of
The support block 23 is moved to the right side, and the punch 9 and the die 1 are moved.
1 is taken out from the ATC tool magazine device 27.

Next, when the support block 23 is rotated by a predetermined angle (180 degrees in this embodiment), the punch 9 and the die 11 are rotated.
Is positioned immediately below the press unit 5. And
Punching is performed while holding the punch 9 and the die 11 on the support block 23.

On the other hand, a front side table 33 and a rear guide table 35 are provided on the opposite side of the ATC device 15 with the fixed table 32 interposed therebetween. The front side table 33 and the rear side table 35 ride on rails 36 and are provided movably in the Y-axis direction (see FIG. 4 ) .
See) . Holding the carried-in workpiece W and the fixed table 32 and the front support <br/> id table 33 and the rear support id table 35 is the table, X-axis, Y-axis movable work movement positioning apparatus to the direction 37 Is provided.

In the work movement positioning device 37, Y
In the movement in the axial direction (the horizontal direction in FIGS. 3 and 4), the work W is moved in the Y-axis direction by a ball screw (not shown) by a driving member, for example, a Y-axis servomotor 39.

An X-axis servo motor 43 is provided on the X-axis mounting plate 41 which is movable in the Y-axis direction .
A carriage base 49 supported by a support bracket 47, which is a member of the slide unit 45, is mounted on the shaft mounting plate 41 in the X-axis direction (the direction perpendicular to the drawing in FIG. 3; FIG. 4). (Up and down direction).

To move the carriage base 49, pulleys 51 are provided at both ends of the carriage base 49. For example, a timing belt or the like, which is an endless belt member 53 wound around the pulley 51, is moved to the X-axis servo. When driven by the motor 43, the carriage base 49 is movable in the X-axis direction. A plurality of clamp units 55 are provided on the carriage base 49 so as to be fixed and releasable. A clamp member 57 is provided at the tip of the clamp unit 55 so that the work W can be gripped and released.

The clamp unit 55 is provided so as to be freely engaged with and disengaged from the belt member 53. When the clamp unit 55 is engaged with the belt member 53, the clamp unit 55 is connected to the carriage base 49. Is movable in the X-axis direction with respect to. When the clamp unit 55 is separated from the belt member 53, the clamp unit 55 is fixed to the carriage base 49 without moving.

With the above configuration, the workpiece W is gripped by the clamp member 57, the clamp unit 55 is released from the carriage base 49, and the carriage base 49 is fixed to the support bracket 47, and the belt member 53 and the clamp unit 55 are engaged. Combine. Then, the X-axis servo motor 4
When the driving member 3 is driven, the clamping member 5 is moved through the belt member 53 within the length range of the carriage base 49 in the X-axis direction.
7 can be moved. This operation is effective when handling a small work W.

Further, the clamp unit 55 is fixed to the carriage base 49, the carriage base 49 is released from the support bracket 47, and the belt member 53 and the clamp unit 55 are engaged. When the X-axis servo motor 43 is driven, the carriage base 49 can be moved in the X-axis direction via the belt member 53, and the work W can be moved in a large range. This is effective when handling W.

Next, the work movement positioning device 37 will be described in more detail.

Referring to FIGS. 1 and 2, the X-axis mounting plate 41, which supports the workpiece movement positioning device 37 by the Y-axis servomotor 39, is provided movably in the Y-axis direction.

On the X-axis mounting plate 41, an X-axis servo motor 43 is erected, and a support bracket 47, which is a member of the slide unit 45, is provided below the X-axis mounting plate 41 so as to hang down. Axis servo motor 4
A shaft 61 coupled to the third output shaft 59 is provided in the support bracket 47 via a bearing 63.

The lower end of the shaft 61 has a drive pinion 65
A rear narrow pulley 67a and a front narrow pulley 67b are rotatably provided on both sides (left and right sides in FIG. 2) of the drive side pinion 65 via bearings. It is provided rotatably. A belt member 53, for example, a timing belt is wound around the pulley 51 and the rear narrow pulley 67 a, the front narrow pulley 67 b, and the drive side pinion 65.

A carriage base 49 engaged with a dovetail groove or the like is slidably mounted in the X-axis direction on the support bracket 47. The carriage base 49 and the support bracket 47 are not shown. It can be fixed or released freely by a lock cylinder 69. Further, a guide member such as L
An M guide rail 71 extends in the X-axis direction and is provided hanging therefrom. A clamp bracket 75 as a clamp member 57 is provided via an LM guide nut 73 which is slidably engaged with the LM guide rail 71. ing.

A groove 77 into which the belt member 53 enters is formed in the clamp bracket 75, and a wedge which is not shown but engages with the belt member 53 by the operation of the belt clamp cylinder 79 and is detachable in the groove 77. A belt clamp 81 having a shape is mounted.

With the above configuration, when the belt clamp cylinder 79 is operated to move the belt clamp 81 up and down, the belt clamp 81 moves right and left due to the wedge effect, and the belt member 53 that has entered the groove 77 is applied to the belt clamp 81. Press and release. Therefore, when pressed, the belt member 53 and the clamp bracket 75 are engaged, and can follow the movement of the belt member 53. When released, the belt member 53 is in a free state and does not follow the movement of the belt member 53.

A belt holder 83 having one end supported on the lower end of the carriage base 49 is provided below the clamp bracket 75. The belt holder 83 has a guide groove 8 for guiding the lower surface of the timing belt as the belt member 53.
5 is provided to prevent the timing belt from sagging. Further, an override sensor 87 for detecting the override of the clamp member 57 is provided.

A clamp 89 is provided integrally with the clamp bracket 75, and a grip 91 for gripping the work W is provided at the tip of the clamp 89. Although not shown, the clamp 89 is gripped by a fluid-operated cylinder or the like. The portion 91 is clamped and unclamped.

Further, the clamp 89 is provided with a clamp cylinder 93. One end of the clamp base 93 is fixed to the carriage base 49 by bolts or the like, and a hanging tongue-shaped carriage base ripple 95 can be pressed and separated by the clamp cylinder 93. ing.

With the above arrangement, when the clamp cylinder 93 is operated and the carriage base ripple 95 is pressed,
The clamp 89 is fixed to the carriage base 49 via the carriage base ripple 95. Also, when the pressing of the carriage base ripple 95 by the clamp cylinder 93 is released, the clamp 89 and the carriage base 49 are released from being fixed and released.

As other components, reference numeral 97 denotes a work clamp hose for a hydraulic passage, and reference numeral 99 denotes a belt clamp hose for the hydraulic passage. Reference numeral 10
Reference numeral 1 denotes a hose for belt unclamping in a hydraulic passage.

With the above-described configuration, the operation thereof is as shown in FIG. 2, when the drive pinion 65 directly connected to the X-axis servo motor 43 is rotated, the rear narrow pulley 67a, the float narrow pulley 67b, and the pulley 51
The belt member 53 wrapped around moves right and left.

When the belt clamp cylinder 79 shown in FIG. 1 is operated to fix the belt member 53 to the clamp bracket 75 by the belt clamp 81, the first clamp unit 55a is moved by the lateral movement of the belt member 53.
And the second clamp unit 55b moves while holding a desired pinch. (The position shown by the dashed line in FIG. 2 is the movement position.) As shown in FIG. 2, when the clamp span is L1 and the clamp stroke is L2, the effective length of the carriage base 49 is L = L1 + L2. .

When the work W is small, that is, L1 +
If L2 is equal to or less than L, the workpiece W is moved without moving the carriage base 49 by moving only the clamp 89 with respect to the carriage base 49.

When the work W is large and close to the L1 size,
Activate the lock cylinder 69 and support bracket 47
And the carriage base 49 are released and the clamp 8 is released.
The work W is processed by moving the carriage base 49 while the carriage base 9 and the carriage base 49 are fixed by the clamp cylinder 93.

When the size of the work W is medium, the carriage base 49 is moved after the first half of the work W has been processed to process the remaining portion, or the first half of the work W has been processed. It will be repositioned and processed later.

It should be noted that in FIG.
FIG. 5 shows a case in which 9 is on the front side, and FIG.

The difference in the movement of the clamp member 57 or the carriage base 49 depending on the size of the work W described above has been described.
That is, the clamp cylinder 93 and the belt clamp series
Sunda 7 9, the workpiece W handling and movement of the lock cylinder 69
The comparison with the size of will be described.

When the work W is relatively small, the clamp cylinder 93 is released to release the clamp 89, the belt clamp cylinder 79 is operated to lock the belt member 53 and the clamp bracket 75, and the lock cylinder 69 is moved. Activate to fix the support bracket 47 and the carriage base 49.

In this state, when the X-axis servo motor 43 is driven and the belt member 53 is moved, only the clamp 89 moves right and left. However, the movement range is X of the carriage base 49.
Within the axial length range.

When the work W to be handled is large, the clamp cylinder 93 is operated to fix the clamp 89 to the carriage base 49, the belt clamp cylinder 79 is operated to lock the belt member 53 and the clamp bracket 75, and the lock cylinder 69 is operated. To release the carriage base 49 from the support bracket 47.

In this state, when the X-axis servo motor 43 is driven to move the belt member 53, the carriage base 49 and the clamp 89 are fixed, so that the carriage base 49 moves right and left.

When the carriage base 49 is moved right and left when the work W is carried in and out, each actuator is moved in the same manner as when the work W to be handled is large.

By the above-described structure and operation, the weight of the carriage base 49 is reduced to about half of that of the conventional one, and no slide is required. Also, a ball screw or the like is not required, so that the speed is increased and the servo gain is increased. Therefore, high precision can be achieved, low noise can be achieved because a ball screw is not required, and the number of parts can be reduced and cost can be reduced.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. For example, in this embodiment, the carriage base 49 that moves in the X-axis direction of the work movement positioning device 37 or the belt member 53 that moves the clamp member 57 is described as a timing belt, but a flat belt, a multi-split belt, a chain, a wire, or the like is used. It is also possible to adopt.

[0052]

As will be understood from the above description of the embodiments, according to the present invention, the work movement positioning device for moving and positioning the work to the punching position of the punching press is moved in the X-axis direction. As the driving member, the belt member is moved in the X-axis direction by driving the belt member instead of the conventionally employed ball screw.

Since no ball screw is employed, cost reduction, low noise and low heat generation are achieved, and high speed and space saving can be achieved.

[Brief description of the drawings]

FIG. 1 shows a main part of the present invention, and is an enlarged view of a part viewed from an arrow I in FIG.

FIG. 2 is an enlarged plan view showing a main part of the present invention and viewed from an arrow II in FIG. 4;

FIG. 3 is a front view of a punching press according to an embodiment of the present invention.

FIG. 4 is a plan view of FIG.

FIG. 5 is an operation explanatory view.

[Explanation of symbols]

 1 Punching Press 13 Punching Processing Position 37 Work Movement Positioning Device 43 X-Axis Servomotor (Drive Member) 49 Carrier Base 53 Belt Member 57 Clamp Member

Claims (1)

(57) [Claims] 1. A X-axis workpiece against punching position of punching press, and the punch ring press consisting comprises a mobile positioning freely work movement positioning apparatus to the Y-axis direction, provided in the work movement positioning device calibration A plurality of clamp members provided on the ledge base and / or the carriage base are connected by a driving member via a belt member.
The frame of the punching press together with the belt member
Punching press is characterized in that no movable to arm short side the X-axis direction is a direction.