Machining process and machining device for double-end-face coated bearing

Abstract

The invention provides a machining process and a machining device for double-end-face coated bearings, and belongs to the technical field of machining, the machining process comprises the following steps: 1) splicing a first bearing and a second bearing, simultaneously clamping and fixing the first bearing and the second bearing at the same reference height, grinding a first coated surface of the first bearing and a first coated surface of the second bearing, and grinding the first coated surface of the first bearing and the second coated surface of the second bearing; the first coating surface of the first bearing and the first coating surface of the second bearing are positioned on the same plane; and (2) the first bearing and the second bearing are turned over, the first coating face of the first bearing and the first coating face of the second bearing are located on the same datum plane, and the second coating face of the first bearing and the second coating face of the second bearing are ground so that the second coating face of the first bearing and the second coating face of the second bearing can be located on the same plane.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to the processing technology of high-precision bearings, in particular to the processing technology and processing device of double-end coated bearings. Background technique [0002] High-precision bearings are precision parts commonly used in aviation products. During the bearing processing process, it is necessary to coat the rotating end surface of the bearing with lubricant to improve the wear resistance, fatigue resistance and product life of the bearing. However, the currently commonly used lubricant coating process cannot meet the requirements of design accuracy, and machining is required after coating. After machining, the thickness of the coating layer of the bearing and the flatness of the double end faces must be 0.003 mm, and the parallelism 0.005mm, the verticality of the inner hole is 0.005mm, and at the same time ensure that the height difference with the ...

AI Technical Summary

Problems solved by technology

However, the currently commonly used lubricant coating process cannot meet the requirements of design accuracy, and machining is required after coating. After machining, the thickness of the coating layer of the bearing and the flatness of the double end faces must be 0.003 mm, and the parallelism 0.005mm, the verticality of the inner hole is 0.005mm, while ensuring that the height difference with the matching bearing is not greater than 0.005mm

[0003] The double end faces of the bearings currently used (the general term for the rotating end face of the first bearing and the rotating end face of the second bearing) are all provided with a coating layer. During processing, the two coated surfaces need to be positioned as reference planes, but the two coated surfaces The difference in positioning flatness is large, resulting in errors in the processing surface and large accumulated measurement errors, which cannot meet the requirement that the height difference of the paired bearings is not greater than 0.005mm

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