Differential pressure type pneumatic clamp

Abstract

The invention discloses a differential pressure type pneumatic clamp, and relates to the field of pneumatic clamps. According to the scheme, the differential pressure type pneumatic clamp comprises aclamp body, a first clamping jaw, a second clamping jaw and a gear and rack transmission assembly, and the gear and rack transmission assembly drives the first clamping jaw and the second clamping jawto move towards each other or away from each other; and the differential pressure type pneumatic clamp further comprises a differential pressure type pneumatic telescopic cylinder, a cylinder body ofthe differential pressure type pneumatic telescopic cylinder is fixed to the clamp body, an output end is connected with the first clamping jaw or the second clamping jaw, and the moving direction ofthe output end is parallel to the moving direction of the first clamping jaw or the second clamping jaw. The differential pressure type pneumatic telescopic cylinder can output forces of different magnitudes, so that the pneumatic clamp can output clamping forces of different magnitudes, different clamping forces can be used for clamping to-be-clamped parts of different rigidities, the situationthat the to-be-clamped parts are clamped to be flat due to the fact that the clamping force is too large or cannot be clamped due to the fact that the clamping force is too small is reduced, the clamping stability and reliability are improved, and the applicability is high.

Description

technical field [0001] The invention relates to the field of pneumatic clamps, in particular to a differential pressure pneumatic clamp. Background technique [0002] In the field of machining, there are all kinds of clamping tools, and pneumatic clamps are one of them. [0003] In the field of laser cutting, chucks and manipulators are common clamping tools. Take the manipulator as an example. Among the existing published patents, the Chinese patent application with the application number "201910864876.3" discloses the "manipulator", which includes the upper fixture. 5.9 and the lower fixture 5.8, the upper fixture 5.9 and the lower fixture 5.8 all include clamping blocks and clamping racks, the upper fixture 5.9 and the lower fixture 5.8 are arranged oppositely, and the clamping gear is driven to rotate by the clamping motor, and then the clamping gear drives the clamp The tightening rack moves, thereby driving the upper clamp and the lower clamp to move toward each other...

AI Technical Summary

Problems solved by technology

[0004] Although this motor-driven jaw movement method is simple in structure and easy to control, its clamping force is uncontrollable, and the clamping force provided for different sizes and different stiffnesses to be clamped is constant. The condition of the clamping piece adjusts the clamping force. Therefore, for the piece to be clamped with less rigidity, there may be a situation where the piece to be clamped is collapsed, and for the heavy weight and larger size to be clamped parts, the clamping force provided may not be enough, so that the clamping may be unstable or even fall during the transfer or processing, which may cause processing safety accidents

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