JPH05245683A - Work clamp device in laser beam machine - Google Patents

Abstract

PURPOSE:To enable the machining of a clamp holding part which can not be machined heretofore by retracting the part holding a work backward in a laser beam machine. CONSTITUTION:A usual cylinder 6 is fitted slantly to a clamp body 5, a clamp lower jaw 11 is separated from the clamp body 5 so as to move the body 5 back and forth, and at the time of unclamping, the clamp upper jaw 4 is moved slantly backward and clamp lower jaw 11 is retracted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device for holding a work of a laser processing machine.

[0002]

2. Description of the Related Art FIG. 3 is a side view of a clamp device for holding a work of a conventional laser processing machine. In the figure, 1 is a processing head for irradiating a laser beam, and 2 is a processing head 1.
Workpieces to be machined by 3 are hook pins that keep the work 2 horizontal on the processing machine, 4 are upper clamps that clamp the work 2 from the upper surface, and 5 are clamps that have lower clamp jaws that support the work 2 from the lower surface. A body, 6 is a cylinder for moving the upper clamp jaw 4 up and down, 7 is a spacer for transmitting the vertical movement of the cylinder 6 to the upper clamp jaw 4, 8 is a joint connecting the cylinder 6 and the spacer 7, 9 is a spacer for the upper clamp jaw 4 Bolts 10 fixed to 7 are table side plates mounted on the processing machine by the clamp body 5.

Next, the operation will be described. The work 2 carried into the processing machine is sent in the direction of arrow A by human power or the like. In that case, the upper clamp 4 of the clamp device is in the open state. Workpiece 2 sent to a predetermined position is transferred to cylinder 6
The descending motion of is transmitted to the spacer 7 via the joint 8, and the work 2 is held between the clamp body 5 having the clamp lower claw 4 by the clamp upper claw 4 fixed by the bolt 9. When the work 2 is unloaded, the work 2 is transmitted to the upper clamp claw 4 in the same manner as in the case where the upward movement of the cylinder 6 is maintained, and the work 2 is indicated by an arrow
Carry out in the direction.

[0004]

Since the conventional clamp device is configured as described above, the work holding portion cannot be processed by the clamp upper pawl 4 being disturbed. Further, there is a problem that the work 2 cannot be carried in and out from the upper surface of the clamp.

The present invention has been made in order to solve the above-mentioned problems, and the work holding portion can be processed during processing, and when the work is carried in and out, the work is held on the upper surface of the clamp device. An object is to obtain a clamp device that can be carried in and out.

[0006]

In the clamp device according to the present invention, a cylinder for vertically moving a clamp upper pawl is obliquely attached to a clamp body so that the clamp lower pawl is independent of the clamp body and interlocks with the vertical movement of the clamp upper pawl. It is designed to work back and forth.

[0007]

In the clamp device according to the present invention, by mounting the cylinder obliquely to the clamp body, the clamp upper pawls are obliquely moved up and down to hold and open the work. Further, a groove is obliquely cut in the spacer between the cylinder and the clamp upper claw, and the fulcrum of the clamp lower claw independent of the clamp body is aligned with this groove so that the clamp lower claw can be moved back and forth.

[0008]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a processing head for irradiating a laser beam, 2 is a work to be processed by the processing head 1, 3 is a sword pin for keeping the work 2 horizontal on the processing machine, and 4 is a clamp for the work 2 from the upper surface. Upper clamp claws, 5 is a clamp body, 6 is a cylinder obliquely attached to the clamp body 5, 13 is a spacer for transmitting a force for vertically moving the cylinder 6 to the upper clamp claws, 8 is a spacer 13 and the cylinder 6 A joint for fixing the clamp upper claw 4 to the spacer 13; a lower clamp claw 11 connected to the spacer 13; a slider 12 for allowing the lower clamp claw 11 to move back and forth; It is a table side plate that is mounted on the processing machine by the clamp body 5.

Next, the operation will be described. FIG. 1 shows a case where the work is held (clamped), and FIG. 2 shows a case where the work is released (unclamped). During the unclamping operation, the diagonal ascending motion generated by the cylinder 6 causes the spacer 13 connected via the joint 8 to ascend. As a result, the upper clamp claw 4 is moved diagonally rearward (unclamp position). At that time, the clamp lower claw 11 is moved rearward using the slider between the clamp bodies 5 via the fulcrum of the groove of the spacer 13. At the time of the clamp operation, as in the case of the unclamp operation, the diagonal lowering motion generated by the cylinder 6 causes the spacer 13 connected through the joint 8 to descend diagonally and the upper clamp claw 4 is clamped.
Move diagonally forward (clamping position). At that time, the clamp lower claw 11 moves forward through the fulcrum of the groove of the spacer 13 using the slider between the clamp bodies 5 to hold the work.

[0010]

As described above, according to the present invention, since the clamp upper claw 4 and the clamp lower claw 11 are moved rearward of the work 2 during processing, the part which is conventionally clamped can be processed. effective. Further, there is an effect that the work loading / unloading device can be made inexpensive only by raising / lowering the work 2 which is carried in loading / unloading the work.

[Brief description of drawings]

FIG. 1 is a sectional side view of a work clamp device when holding a work according to an embodiment of the present invention.

FIG. 2 is a side sectional view of a work clamp device when a work is opened according to an embodiment of the present invention.

FIG. 3 is a side view of a conventional work clamp device.

[Explanation of symbols]

 1 Processing Head 2 Work 3 Kenyama Pin 4 Clamp Upper Claw 5 Clamp Body 6 Cylinder 7 Conventional Spacer 8 Joint 9 Bolt 10 Table Side Plate 11 Clamp Lower Claw 12 Slider 13 Spacer in the Present Invention

Claims (1)

[Claims] 1. A work clamp device disposed on a work supporting portion of a laser processing machine for irradiating a work with a laser beam to perform processing, wherein the device is a clamp upper claw and a clamp lower part for pressing a work. A claw, a driving means such as a cylinder for raising and lowering the clamp claw in an oblique direction with respect to the vertical direction, and a guide for moving the lower clamp claw to the side opposite to the work by the raising operation of the driving means. A work clamp device for a laser processing machine, which is configured by parts.