Etching method used in manufacturing fluid bearing

Abstract

An etching technology for preparing fluid bearing includes using a mandrel for spraying as the mask of raw bearing material, filling the protecting material in the inner part of fluid bearing to generate the protecting pattern, pulling up said mandrel, etching to form the needed oil slot, and washing to remove the etching liquid and protecting pattern. Its advantages are high productivity and low cost.

Description

technical field [0001] The invention relates to an etching method applied to the manufacture of a fluid bearing, in particular to a method for manufacturing an oil groove in the inner diameter part of the fluid bearing. Background technique [0002] In terms of mechanical design, when making passive fluid bearings, it is necessary to design oil grooves on the inner diameter of the bearings, so that the bearings can generate oil film pressure and oil seal effects during operation. Generally, the internal oil groove of the bearing is manufactured by traditional cutting methods; but today's motors tend to be smaller and smaller, it is not easy to manufacture high-precision micro motors, and the depth, width and inner diameter of the oil groove of the micro motor The concentricity requirements are very strict. If it is produced by the traditional machining method of cutting, there will be problems such as burrs, poor concentricity of the oil groove, wear of the tool, and diffic...

AI Technical Summary

Problems solved by technology

However, the rigidity and hardness of the plastic bearing itself is insufficient, and it has the disadvantage of not being wear-resistant

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