Method for manufacturing novel super-high speed precision ball bearing

Abstract

The invention discloses a method for manufacturing a novel super-high speed precision ball bearing. The method comprises the following steps: (a) preparing a Cr-N-C gradient compound coating; (b) washing a steel ball sample and drying with cold air; (c) highly vacuumizing by putting the steel ball in a cavity; (d) introducing Ar2, exerting a negative bias after rising of the air pressure, opening a Cr target to promote the current, washing the matrix, and opening a rotary workpiece clamp to rotate the steel ball in a constant speed; (e) reducing the negative bias and the chromium target current; (f) depositing the Cr-N-C gradient compound coating by exerting a negative bias on the matrix, wherein the Cr-N-C gradient compound coating is composed of a Cr bottom layer, a Cr-N transition layer and a Cr-N-C work layer; and (9) closing the Cr target, the C target and the nitrogen, and continuously introducing an argon. By adopting the technical solution provided by the invention, the temperature rise of the precision ball bearing can be greatly reduced, the vibration of the bearing can be reduced and the vibration stationarity can be increased, and then the high speed performance of the precision ball bearing and the reliability of the performance life can be increased and simultaneously the loading ability can be increased.

Description

technical field [0001] The invention relates to the field of bearings, in particular to a manufacturing method of a novel ultra-high-speed precision ball bearing. Background technique [0002] According to the application status of the existing high-speed precision ball bearings, there are a series of aspects that need to be improved, such as poor high-speed performance, large temperature rise, and large vibration. Contents of the invention [0003] The purpose of the present invention is to overcome the existing defects of the existing high-speed precision ball bearings, and provide a new type of manufacturing method for ultra-high-speed precision ball bearings. The technical problem to be solved is to reduce the temperature rise of the bearing and improve its The load capacity and vibration reduction can greatly improve the high-speed performance and performance reliability of the bearing, etc., so that the performance characteristics of the main engine can be greatly im...

AI Technical Summary

Problems solved by technology

[0002] According to the application status of the existing high-speed precision ball bearings, there are a series of aspects that need to be improved, such as poor high-speed performance, large temperature rise, large vibration, etc.

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