Elastic chuck

Abstract

The invention relates to an elastic chuck which comprises a cylinder. An axial through cavity is formed in the cylinder; the through cavity is provided with a locating shaft; at least two grooves are formed in the outer wall of the cylinder; the grooves are respectively provided with locating rings; the locating rings are composed of at least two locating arcs; the two ends of the locating arcs are respectively in screw connection with the bottoms of the grooves through locating screws; protruded blocks are integrally formed on the inner sides of the locating arcs; through holes are formed in the grooves and at the positions of the grooves corresponding to the protruded blocks; the through holes are communicated with the through cavity; the protruded blocks are inserted into the through holes; locating cone frustums are arranged on the locating shaft and at the positions of the locating shaft corresponding to the protruded blocks; the locating screws comprise nuts and screw bodies which are integrally formed; the screw bodies comprise threaded portions and smooth portions which are integrally formed; the smooth portions are close to the nuts, and the threaded portions are far away from the nuts. The elastic chuck is simple in structure, all locating rings can open at the same time to clamp cylindrical tubes when the elastic chuck is used for clamping the cylindrical tubes, and the stress is even. Therefore, processed cylindrical tubes are identical in thicknesses of lateral walls, the defective percentage of products is reduced, and the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of light transmission devices, in particular to an elastic collet. Background technique [0002] A collet is a jig that clamps a cylindrical tube for processing. The structure of the existing elastic collet is unreasonable, one end has a large diameter and the other end has a small diameter, and the force is uneven. At the same time, when the collet is rotated by the motor, a large centrifugal force will be generated, which makes the force on the cylindrical tube uneven , so that the thickness of the side wall of the processed cylindrical tube varies greatly, and the size changes greatly, which seriously increases the defective rate of the product, reduces the quality of the product, and increases the production cost. [0003] In addition, the existing collets still have the situation that the clamping force is not easy to control. If the clamping force is too large, the cylindrical tube will be easily brok...

AI Technical Summary

Problems solved by technology

The structure of the existing elastic collet is unreasonable, one end has a large diameter and the other end has a small diameter, and the force is uneven. At the same time, when the collet is rotated by the motor, a large centrifugal force will be generated, which makes the force on the cylindrical tube uneven , so that the thickness of the side wall of the processed cylindrical tube varies greatly, and the size changes greatly, which seriously increases the defective rate of the product, reduces the quality of the product, and increases the production cost

[0003] In addition, the existing collets still have the situation that the clamping force is not easy to control. If the clamping force is too large, the cylindrical tube will be easily broken; The shape tube falls from the chuck, reducing the processing quality and processing efficiency

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