Center bracket for solid propellant reshaping

Abstract

A center bracket for solid propellant reshaping is used for machining solid propellants of the large size in the reshaping process. Three rolling wheels are fixed to a center bracket main body connection ring through connection swing devices. A center bracket main body is of a hollow structure, three eccentric centripetal rails are evenly distributed in the center bracket main body, and the internal clamping diameter of the center bracket is changed by rolling the rolling wheels on the centripetal rails. According to the center bracket, the internal clamping diameter is changed while the rolling wheels roll on the eccentric centripetal rails, the diameter of the circle where the rolling wheels are located can be changed and the tightening effect is achieved through the connection swing devices, it can be effectively guaranteed that the tightening size determined by the center bracket cannot be changed by external force, scratches generated by friction between the nylon rolling wheels and metal can be relieved by the adoption of the nylon rolling wheels, and tightening is more easily. By means of the center bracket, when internal reshaping holes and other portions are machined, the internal clamping size of the center bracket is adjusted freely, objects are locked conveniently and fast, external reshaping weld joints, hanging frames and other barriers are avoided effectively, and machining accuracy is high.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a center bracket used for shaping inner holes and other parts of large-size solid propellants. Background technique [0002] When shaping large-sized solid propellants on a lathe, the usual practice is to clamp the processed object, adjust the coaxiality of the object to the required range before processing, and then use the center frame to place it near the processing end. The supporting function is to ensure that there is no excessive shaking or shaking when the object is processed, so that the processing size can better reach the standard range. However, when shaping some large-size solid propellants, the peripheral welding seams, hangers and other auxiliary parts will cause a huge jump after the ordinary center frame is mounted, and even cannot be processed. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the object ...

AI Technical Summary

Problems solved by technology

However, when reshaping some large-size solid propellants, the peripheral welding seams, hangers and other auxiliary parts will make the ordinary center frame jump greatly after being mounted, and even cannot be processed.

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