Hollow shaft outer circle grinding high-precision spring plug

Abstract

The invention relates to a positioning device used for grinding outer circles during hollow shaft type part processing in machinery manufacturing, in particular to a hollow shaft outer circle grinding high-precision spring plug. According to a traditional processing method, a dead plug with a center hole is beaten into a hollow part, then, the outer circles are finely ground through two center installing and clamping workpieces, the dead plug is ejected out by a screw bolt after the grinding completion, the time and the labor are wasted, and the efficiency is low. The hollow shaft outer circle grinding high-precision spring plug consists of a plug core, a spring sleeve, a back cover and regulating screw bolts, wherein the plug core is a step shaft provided with a shaft shoulder, a threaded hole is formed in the shaft shoulder, the outer circle of the small end of the plug core is provided with a cone surface, center holes are processed in the centers of the two end surfaces of the plug core, the conicity of an inner hole of the spring sleeve is identical to the conicity of the outer circle of the plug core, the matched grinding processing is adopted, the spring sleeve is provided with a positioning table, the back cover is a transparent cover, the outer circle is matched with an inner hole formed in the tail end part of a cone hole of the spring sleeve, a gap is arranged between the back cover and the end surface of the plug core, four through holes distributed in the back cover correspond to the four threaded holes of the plug core, and the regulating screw bolts pass through through holes formed in the back cover to be screwed into the threaded hole of the plug core. The positioning device has the advantages that the operation is simple, and the positioning is precise and reliable.

Description

technical field [0001] The invention relates to a positioning device for grinding outer circles of hollow shaft parts in machine manufacturing, in particular to a high-precision spring plug for grinding outer circles of hollow shafts. Background technique [0002] At present, in the prior art, the grinding of the outer circle of the hollow shaft basically adopts the traditional processing method. The traditional processing method is to fit the dead block with interference fit in the hollow, because the interference fit is difficult to disassemble, and at the same time, a great expansion force is applied to the inner hole of the workpiece. After grinding the outer circle of the shaft and removing the dead block, the expansion force disappears, resulting in When the outer circle shrinks, there will be waste products, which will waste a lot of time and materials, and increase the cost. This kind of process method is far from meeting the current high-quality product design requ...

AI Technical Summary

Problems solved by technology

The traditional processing method is to fit the dead block with interference fit in the hollow, because the interference fit is difficult to disassemble, and at the same time, a great expansion force is applied to the inner hole of the workpiece. After grinding the outer circle of the shaft and removing the dead block, the expansion force disappears, resulting in When the outer circle shrinks, there will be waste products, which will waste a lot of time and materials, and increase the cost

This process method is far from meeting the current high-quality product design requirements

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