Clamping mechanism

Abstract

The invention discloses a clamping mechanism. The clamping mechanism comprises an elastic sleeve and a force application component, wherein the force application component is used for clamping and releasing the elastic sleeve which is used for clamping a workpiece. The middle of the elastic sleeve is provided with an operation cavity allowing placement of the workpiece, and the outer end face of the elastic sleeve is drum shaped. The force application component comprises a fixed seat, a moving seat and a driving device, the moving seat is matched with the fixed seat which is fixedly connected with equipment, the driving device drives the moving seat to move, and a tapered portion matched with the drum-shaped outer end face of the elastic sleeve are formed on the inner wall of each of the fixed seat and the moving seat. The driving device drives the moving seat to move forward to clamp the elastic sleeve, and the driving device drives the moving seat to move backward to release the elastic sleeve. The clamping mechanism has the advantages of simple structure, convenience in mounting and demounting and uniformity in workpiece clamping force.

Description

technical field [0001] The invention relates to the field of clamping, in particular to a clamping mechanism. Background technique [0002] In machining, many workpieces need to be fixed and positioned by clamping devices in the process of processing or measuring. With the continuous innovation of technology, the original manual clamping has developed to the current common mechanical clamping. The drive clamps and releases the workpiece. [0003] In the existing technology, such as figure 1 As shown, a clamping device includes a sleeve part 10 for clamping a workpiece and a clamping seat 20. The clamping seat 20 is set on the outer end surface of the sleeve part 10, and the clamping seat 20 is driven by a driving device to clamp the sleeve. Cylinder 10, so as to clamp the workpiece, but there are still the following defects: the driving device drives one end of the clamping seat 20 to achieve clamping, the force acting on the sleeve 10 is uneven, and the force is directed ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, such as figure 1 As shown, a clamping device includes a sleeve part 10 for clamping a workpiece and a clamping seat 20. The clamping seat 20 is set on the outer end surface of the sleeve part 10, and the clamping seat 20 is driven by a driving device to clamp the sleeve. Cylinder 10, so as to clamp the workpiece, but there are still the following defects: the driving device drives one end of the clamping seat 20 to achieve clamping, the force acting on the sleeve 10 is uneven, and the force is directed toward the sleeve near the outer end surface. The cylinder parts 10 are gradually reduced, and the clamping force is unevenly distributed on the workpiece. On the one hand, the clamping of the workpiece is not in place. Due to insufficient clamping force, the processing of the workpiece is seriously affected, and the processed workpiece is low in accuracy or even scrapped. On the other hand, the uneven force will pinch the workpiece; (2) when processing different types of workpieces, the entire clamping head needs to be disassembled and replaced, which is troublesome to disassemble and complicated to install, greatly reducing work efficiency

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