Excircle fine super-grinding process method for precise micromotor bearing

Abstract

The invention discloses an excircle fine super-grinding process method for a precise micromotor bearing. The excircle fine super-grinding process method comprises the following steps that S1, cutting fluid is added; S2, rough grinding is conducted; and S3, fine grinding is conducted. According to the excircle fine super-grinding process method, a water-soluble cutting fluid is used in the outer ring rough grinding and fine grinding machining process, oil mist cannot be generated, the machining environment is improved, and the waste liquid is low in production rate and can be recycled, so that the machining cost is reduced, according to the excircle fine super-grinding process method, the excircle size of an outer ring or an inner ring of the bearing can be reduced in the rough grinding step, the excircle surface of the outer ring of the bearing is repaired in the fine grinding step, and finally the high-precision outer ring of the bearing which is free of obvious bright drawing in appearance, and is 2 microns in size concentration ratio, less than or equal to 0.3 microns in roundness and less than or equal to 0.05 microns in roughness is obtained.

Description

technical field [0001] The invention belongs to the technical field of bearing grinding, and relates to a process method for precision super-grinding of an outer circle of a precision micro-motor bearing. Background technique [0002] Micro-motor bearings are mainly composed of outer ring, inner ring, rolling elements, cage, dust cover and grease, among which the outer circles of the outer ring and inner ring need to be ground. Mineral oil-based water-insoluble oils are used. Although water-insoluble oils have good lubricity, they also have many disadvantages such as flammability, oil mist generation, waste liquid treatment, and high cost; there are still many disadvantages in the current market. A small number of water-soluble grinding fluids are used for bearing processing, but the dimensional accuracy and roughness of the bearings manufactured by using the water-soluble grinding fluid processing technology are not up to standard, and cannot meet the processing performance...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention proposes a precision super-grinding process for the outer circle of precision micro-motor bearings, which solves the problems of high processing costs, oil mist and waste liquid, and substandard processing accuracy in the prior art.

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