JPH07275972A - Work positioning device - Google Patents

Abstract

PURPOSE:To easily cramp a work even it is a non-magnetic body and to precisely position the work by composing the device of a clamping member installed on the upper part of a rotary shaft and an absorbing member moving up and down installed on a side upper than this clamping member. CONSTITUTION:After a work is positioned on a work table 5, a moving member 13 is moved back and forth and a clamp 25 is positioned at a position lower than a absorbing member 39 through a rotary shaft 21. At the same time, the absorbing member 39 is lowered, the work is clamped with the clamping member 25 and the absorbing member 39, moved to a metal plate machine and the work is positioned against the metal plate machine. If necessary, the rotary shaft 21 is rotated and the work is rotated. Therefore, this work positioning device does not adopt a C-shaped frame structure, makes an under drive structure, easily clamps and precisely positions even if the holes or its material quality is a non-magnetic body of SUS, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work positioning device for positioning a work on a plate material processing machine when the plate material processing machine processes the plate material on the work.

[0002]

2. Description of the Related Art Conventionally, it is necessary to position a work on a bending machine when performing bending on the work using, for example, an ironing and bending machine as a plate material processing machine. As this work positioning device, for example, as is known from Japanese Utility Model Laid-Open No. 2-1530, a work table is provided on the front side of the bending machine, and the work table has a groove extending in the front-rear direction. Is provided. A C-shaped manipulator that is movable in the front-rear direction along the groove is provided. This manipulator is provided with a rotatable clamp device for clamping and indexing a work.

Further, as another work positioning device,
A movable member that is movable in the front-rear direction along the groove is provided, and the movable member is provided with a rotatable shaft. A clamp device is provided on the upper part of the rotary shaft, and a vacuum pad is embedded in the clamp device without a gap so that a workpiece is sucked and clamped.

[0004]

By the way, in the former work positioning device among the above-mentioned conventional techniques, the C-shaped manipulator opens when the work is clamped by the clamping device. In order to prevent this jaw opening, the rigidity of the C-shaped manipulator must be increased. As a result, the weight is increased, the inertia is increased, the maneuverability is deteriorated, and the cost is further increased.

Further, as a result of the jaw opening, the path line for clamping the workpiece changes, and accurate positioning cannot be performed. In addition, the overdrive structure makes it unstable and increases the installation space.

Further, in the latter work positioning device, for example, when a plurality of holes are formed in the work to be bent, the suction force for clamping the work becomes weak and it becomes unstable. .

An object of the present invention is not to adopt a C-shaped frame structure but to have an underdrive structure so that a non-magnetic material such as a hole or a material such as SUS can be easily clamped to accurately position a workpiece. Moreover, it is to provide a light and inexpensive work positioning device.

[0008]

In order to achieve the above object, a work positioning device of the present invention is a work positioning device for positioning a work on a plate processing machine, the work being provided on the front side of the plate processing machine. A table, a moving groove extending in the front-rear direction on the work table, a movable member provided under the work table and movable in the front-rear direction, and provided on the moving member in the moving groove and rotating. It is characterized in that it is composed of a freely rotatable rotary shaft, a clamp member provided above the rotary shaft, and a vertically movable suction member provided above the clamp member. .

In the work positioning device, the suction member is held by a claw member below a fluid cylinder provided on the frame and is provided so as to be disengageable in the front-rear direction from the claw member. Clamped and unclamped the workpiece with the magnet and the attracting member made of iron, clamped and unclamped the workpiece with the clamp member made of iron and the magnet provided on the attracting member, and provided on the clamp member. It is desirable to clamp and unclamp the work with the magnets provided and the magnets provided on the attraction member.

[0010]

With the above work positioning device of the present invention, after positioning the work on the work table, the moving member is moved in the front-rear direction so that the clamp member is positioned below the suction member via the rotary shaft. The workpiece is positioned with respect to the plate material processing machine by moving the workpiece to the plate material processing machine after the suction member is lowered and the work piece is clamped by the clamp member and the suction member. If necessary, the rotary shaft is rotated and the work is rotated.

This work positioning device has an underdrive structure without using a C-shaped frame structure, and even a non-magnetic material such as a hole or a material such as SUS can be easily clamped and the work can be positioned accurately. Moreover, it will be light and inexpensive.

[0012]

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

Referring to FIG. 1, a plate material processing machine 1 such as an ironing and bending machine or a shearing machine is arranged. On the front side of the plate material processing machine 1, a work table 5 having a plurality of rotatable free gearing 3 on its surface is provided. A plurality of gauge pins 7 are provided on the work table 5 as a gauging device for positioning one side of the work.

At a substantially central portion of the work table 5 in the X-axis direction (horizontal direction), a moving groove 1 extending in the Y-axis direction (front-back direction) which is a part of the work positioning device 9.
1 is formed. A moving member 13 that is movable in the Y-axis direction is provided below the moving groove 11. A nut member 15 is integrated with the moving member 13,
A ball screw 17 extending in the Y-axis direction is screwed into the nut member 15. A front end (right end in FIG. 1) of the ball screw 17 is connected to a Y-axis motor 19 mounted in the work table 5.

With the above structure, when the Y-axis motor 19 is driven, the ball screw 17 is rotated. The rotation of the ball screw 17 causes the moving member 13 to move through the nut member 15.
Will be moved in the Y-axis direction.

A rotatable shaft 21 extending in the vertical direction is mounted on the moving member 13 at substantially the center thereof.
A C-axis motor 23 for rotating the rotary shaft 21 is mounted on the moving member 13. A drive gear, for example, is attached to the output shaft of the C-axis motor 23, and the drive gear is screwed to a driven gear fitted to the lower end of the rotary shaft 21.

With the above construction, when the C-axis motor 23 is driven, the drive gear is rotated via the output shaft. The rotation of the drive gear causes the rotary shaft 21 to rotate via the driven gear.

A clamp member 2 is provided on the rotary shaft 21.
5 are provided. A plurality of electromagnets 27 are embedded in the clamp member 25 as shown in FIG. The right side wall of the work table 5 has L
A character-shaped frame 29 is attached, and an upper frame 31 of this frame 29 extends in the X-axis direction and is supported by a cantilever.

The upper frame 31 is preferably provided with an air cylinder 33 as a fluid cylinder, as shown in FIGS. 2 and 3 together. A claw member 37 is integrated with the lower end of the piston rod 35 mounted on the air cylinder 33. The suction member 39 is held by the plurality of claws 37A provided on the claw member 37. That is, the engaging groove 39V with which the claw 37A is engaged is formed in the upper part of the suction member 39, and the claw 3 is fitted in the engaging groove 39V.
7A is engaged or disengaged. Moreover, the suction member 39 is made of iron.

With the above structure, when the air cylinder 33 is operated to lower the piston rod 35, the claw member 37 integrated with the lower end of the piston rod 35 descends,
The suction member 39 holding the claw 37A of the claw member 37 is lowered as shown by the arrow in FIG. 2 and abuts on the clamp member 25.

A series of operations for positioning the work on the work table 5 and then on the plate material processing machine 1 will be described. First, one side of the work mounted on the work table 5 is positioned at a certain position by the gauge pin 7. To be done. The clamp member 25 moves in the front-rear direction and is moved right below the suction member 39.

When the attracting member 39 is lowered, the workpiece W is sandwiched between the clamp member 25 and the attracting member 39, and the electromagnet 27 embedded in the clamp member 25 is actuated to generate a required amount of clamping force by the magnetic force of the electromagnet 27. It is generated and the work W is clamped.

Next, as shown in FIG. 3, when the moving member 13 is moved to the plate material processing machine 1, the suction member 39 is removed from the claw member 37. Further, by rotating the rotary shaft 21 to index the work W, one side of the work W is positioned on the plate material processing machine 1. After being positioned, the work W is subjected to desired plate processing by the plate processing machine 1. After the plate material is processed, when the moving member 13 is returned to its original position, the engaging groove 39V of the suction member 39 is moved to the claw 37A of the claw member 37.
The work W is unclamped when the suction member 39 is raised by being engaged with.

As described above, the work positioning device 9 does not adopt the C-shaped frame structure but has an underdrive structure, the electromagnet 27 is embedded in the clamp member 25, and the attracting member 39 is made of iron. The positioning can be performed accurately. Moreover, it is possible to provide a light and inexpensive work positioning device.

There is a hole in the work W or the material is SU
Even non-magnetic materials such as S can be clamped. Even during processing in which the plate material processing machine 1 is processing the workpiece W, the suction member 39 can be handled regardless of the operation during processing.

A permanent magnet and an electromagnet may be used instead of the electromagnet embedded in the clamp member 25. At this time, the work W is attracted by the permanent magnet, and the work W is released by electromagnetically moving in the opposite direction of the permanent magnet.

When the electromagnet or the permanent magnet is embedded in the clamp member 25, the permanent magnet or the electromagnet may be embedded in the adsorbing member 39 to clamp or unclamp the work W. In this case, the work W is separated by reversing the polarities of the electromagnets or by reversing them.

Further, the clamp member 25 may be made of iron and the electromagnet 27 may be embedded in the attraction member 39. Moreover, the shape of the electromagnet 27 may be round, square, elliptical, oval or triangular. In addition, the suction member 39 is used by a person to clamp the clamp member 2.
It is also possible to place it on top of the 5. Adsorption member 3
The position of 9 may be anywhere on the Y-axis and may be plural.

The present invention is not limited to the above-mentioned embodiments, but can be implemented in other modes by making appropriate changes.

[0030]

As can be understood from the above description of the embodiments, according to the present invention, an underdrive structure is adopted without adopting a C-shaped frame structure, and a non-perforated material such as SUS is used. Even a magnetic material can be easily clamped and the work can be accurately positioned. Moreover, a light and inexpensive work positioning device can be manufactured.

[Brief description of drawings]

FIG. 1 is a perspective view of a work positioning device of an embodiment provided on the front side of a plate material processing machine according to the present invention.

FIG. 2 is a front view of a II arrow portion in FIG.

FIG. 3 is a side view of FIG.

[Explanation of symbols]

 1 Plate Material Processing Machine 5 Work Table 7 Gauge Pin 9 Work Positioning Device 11 Moving Groove 21 Rotating Shaft 25 Clamping Member 27 Electromagnet 29 Frame 33 Air Cylinder (Fluid Cylinder) 37 Claw Member 37A Claw 39 Adsorption Member 39 Engagement Groove

Claims (5)

[Claims] 1. A work positioning device for positioning a work on a plate material processing machine, comprising: a work table provided on the front side of the plate material processing machine; and a moving groove provided on the work table so as to extend in the front-rear direction. A movable member provided below the work table and movable back and forth, a rotary shaft provided on the movable member in a moving groove and rotatably provided, and a clamp provided above the rotary shaft. A work positioning device comprising a member and a vertically movable suction member provided above the clamp member. 2. The work according to claim 1, wherein the suction member is held by a claw member at a lower portion of a fluid cylinder provided on the frame and is provided so as to be detachable from the claw member in the front-rear direction. Positioning device. 3. The work positioning device according to claim 1, wherein the work is clamped and unclamped by a magnet provided on the clamp member and an adsorption member made of iron. 4. The work positioning device according to claim 1, wherein the work is clamped and unclamped by a clamp member made of iron and a magnet provided on the attraction member. 5. The work positioning device according to claim 1, wherein the work is clamped and unclamped by a magnet provided on the clamp member and a magnet provided on the attraction member.