JP2549832Y2 - Work clamp device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work clamping device, and more particularly to a work clamping device which is convenient for taking out a work after machining.

[0002]

2. Description of the Related Art A conventional work clamping device is constituted by a pair of clamp claws, which clamp a work. Then, the work held by the clamp claws is processed by a machine tool.

[0003]

However, in such a conventional technique, since the claws of the clamp only open and close, in order to remove the workpiece from the clamp after processing, a separate mechanism for removing the workpiece is provided. It is necessary and disadvantageous in terms of structure and cost.

The purpose of the present invention is to pay attention to such a conventional technique, and to provide a work clamp device which can easily take out a work after machining without providing another mechanism. It is.

[0005]

A work clamp device according to the present invention is a work clamp in which a work is clamped between a support portion fixed substantially horizontally on a lower side and a claw body rotatably supported on an upper side. An apparatus, wherein the support portion is provided with a work pushing device for pushing a work when the claw body is opened.

[0006]

According to the work clamping device of the present invention,
At the time of processing, the work is sandwiched between the support part fixed substantially horizontally on the lower side and the claw body rotatably supported on the upper side, and the work provided on the support part with the claw body opened after processing Since the pushing device pushes out the work, the work is easily taken out, and there is no need to provide a separate mechanism for taking out the work.

[0007]

1 to 4 show a preferred embodiment of the present invention.
It will be described based on.

FIGS. 3 and 4 respectively show a front view and a plan view of a turret punch press as an example using the clamp according to the present invention. This punch press 1 has a gap portion 5 in its machine frame 3.
Upper turret 7 rotatably supported on the upper machine frame side inside
And a lower turret 9 rotatably supported on the lower machine frame side are provided apart from each other in a horizontal state. A punch 11 is provided on the periphery of the upper turret 7, and a die 13 is provided on the periphery of the lower turret 9.
The upper and lower turrets 7 and 9 are rotated and positioned synchronously in a separated state. Thereby, the desired punch 11 and die 1
The pair 3 is positioned directly below the striker 17 attached to the lower end of the ram 15, and the striker 17 pushes down the punch 11 to punch the work W positioned between the upper turret 7 and the lower turret 9. Will be applied.

On the other hand, the carriage base 23 connecting the left and right movable tables 21 and 21 while straddling the fixed table 19 is moved / positioned in the Y-axis direction by numerical control. The carriage base 23 is provided with a carriage 25 which is moved and positioned in the X-axis direction by numerical control. The work clamp device 27, which is a main part of the present embodiment, is attached to the carriage 25, and holds the work W while clamping the work W.
Are moved in the X-axis and Y-axis directions to move the punch 11 and the die 1 described above.
3 is used to position the work W between the work W.

Next, a work clamping device according to the present invention will be described with reference to FIGS. The work clamp device 27 has a lower clamp claw 29 as a support portion on the lower side substantially horizontally, and an upper clamp claw 33 as a claw body is fixed to a support piece 31 extending above the lower clamp claw 29 by a pin 35. It is rotatably supported. A clamping claw 37 projects downward from the distal end of the upper clamp claw 33.
And the work W is sandwiched between them. Further, the lower clamp claw 29 is
A work pusher 41 of a work pushing device 39 which can reciprocate back and forth (in the directions A and B in the drawing) is provided, and an air cylinder 43 as a fluid cylinder for driving the work pusher 39 is provided behind the work pusher 41. Is provided. That is, the work pressurer 41 is attached to the front end of the piston 45 of the air cylinder 43,
The movement of the piston 45 causes the piston 45 to reciprocate back and forth.

As shown in FIG. 1, the work clamp device 27 clamps the work W between the clamping claw 37 at the tip of the upper clamp claw 33 and the upper surface of the lower clamp claw 29, as shown in FIG. The piston 45 is in a housed state, and the rear end surface of the work W is in contact with the front end surface of the work pusher 41. Then, when the processing is completed, as shown in FIG.
The top end of the work 3 rotates upward and separates from the upper surface of the work W to be opened, and then the piston 45 pushes the work W forward through the work pusher 41 to push the work W to the work clamp device 27.
Extrude from

As described above, the upper clamp claw 3 is formed at the time of processing.
3 and the lower clamp claw 29, and the rear end face is pressed by the work pusher 41, so that it is securely supported without rattling, and is disposed at a predetermined position.
Processed.

After processing, the upper clamp claw 33
Pivots upward and opens, and then the air cylinder 43 pushes out the work W via the work pusher 41,
The work W can be easily and reliably taken out without providing a mechanism for separately pushing out the work W.

In the above embodiment, the work clamp device 27 of the present invention is used for the turret punch press. However, the present invention is not limited to this. it can.

Further, although an example has been described in which the work pushing-out device 39 uses the air cylinder 43 as an example of a fluid cylinder, the invention is not limited to this. For example, an oil cylinder or the like, or a rack and pinion or the like may be used. It goes without saying that it is possible.

[0016]

The work clamp device according to the present invention has the structure as described above, and has a support portion fixed substantially horizontally on the lower side and a claw body rotatably supported on the upper side during processing. The work pushing device provided on the support section pushes out the work from the clamp with the claw body opened and opened after processing, so that the work can be easily taken out. There is no need to provide it separately.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state at the time of machining in an embodiment of a work clamp device according to the present invention.

FIG. 2 is an explanatory view showing a state after processing in an embodiment of the work clamping device according to the present invention.

FIG. 3 is a front view of a turret punch press using the clamp according to the present invention.

FIG. 4 is a sectional view taken along the line II-II in FIG.

[Explanation of symbols]

 27 Work Clamping Device 29 Lower Clamp Claw (Support) 33 Upper Clamp Claw (Claw Body) 39 Work Pushing Device 43 Air Cylinder (Fluid Cylinder) W Work

Claims (1)

(57) [Scope of request for utility model registration] 1. A work clamp device for clamping a work between a support portion fixed substantially horizontally on a lower side and a claw body rotatably supported on an upper side, wherein the claw body is provided on the support portion. A work pushing device for pushing a work when the work is opened.