Minitype bearing five-point positioning ultra-precision bearing positioning mechanism

Abstract

In order to solve the problems, the invention provides a minitype bearing five-point positioning ultra-precision bearing positioning mechanism which has a reasonable structure and convenient regulation and solves the problems of inaccurate original positioning and unstable ultra-precision depth. The mechanism consists of an upper pressure wheel, a lower pressure wheel, an end face bearing, a rear bearing and an ultra-precision oilstone; the upper pressure wheel and the lower pressure wheel are fixed in the outside diameter of a bearing ferrule respectively; the upper pressure wheel tilts outwards for 10 to 15 degrees; the lower pressure wheel tilts towards the opposite direction for 5 to 10 degrees; the centerline of the upper pressure wheel is tangential with the outer circle of the bearing ferrule; the rear bearing is fixed on the right side of the outer circle of the bearing ferrule; the plane of a rear baffle is contacted with the end face of a workpiece; the ultra-precision oilstone is fixed inside the workpiece and tangential with the inner circle; through the design, the curvature precision of the inner circle and the outer circle can be ensured and can be controlled within 2si; and the ultra-precision depth is also controlled and can be controlled within 4 mu m, thereby ensuring the sleeving rate of the bearing.

Description

technical field [0001] The invention relates to a positioning mechanism, in particular to a five-point positioning super-precision support positioning mechanism for miniature bearings. Background technique [0002] As the size of the bearing becomes smaller, the requirements for low noise and long life of the bearing are getting higher and higher, and the control and requirements for the ultra-precision process are becoming more and more strict. The inner and outer rings of the existing small bearings (such as 520 bearings) are too small to be able to Using the method of centerless support and end surface pressing roller, only the inner and outer ring grooves can be used for ultra-finishing. The three-point positioning of the rolling rod and the oil stone is used to locate the outer circle and the groove, while the end faces of the inner and outer rings of the bearing have no positioning, and the oil stone passes through the swing rod left and right. Swing makes the ferrule ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned problems, provide a five-point positioning ultra-precision support positioning mechanism for miniature bearings with reasonable structure, convenient adjustment, and solve the problems of inaccurate positioning and unstable ultra-precision depth.

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