Mould for machining engine main shaft bearing inner ring with inner diameter oil groove and machining method

Abstract

The invention relates to a mould for machining an engine main shaft bearing inner ring with an inner diameter oil groove and a machining method, and relates to a mould for machining a bearing inner ring and a machining method. The problem of poor machining accuracy of the inner diameter of a bearing inner ring and the size of an inner diameter oil groove is solved. The mould is composed of a mouldbase, a pressing plate and a connecting bolt; and a ring-shaped flange is arranged on a bearing plane. The machining method comprises the steps that an outer circumferential surface is milled softlybefore an inner circumferential surface is turned finally, the outer circumferential surface of an inner ring and one end face of the bearing inner ring are used as a positioning datum to machine theinner circumferential surface of the inner ring; milling of the inner diameter oil groove is performed after the finally turning of the inner circumferential surface of the inner ring; the bearing support flat face of the mould is used for positioning one end face of the bearing inner ring; and the outer circumferential surface positioned by the inner surface of the ring-shaped flange of the baseis used for machining the inner diameter oil groove. According to the mould for machining the engine main shaft bearing inner ring with the inner diameter oil groove, deformation caused by tightly clamping can be avoided, the machining method ensures the machining accuracy of the inner diameter oil groove, and the method is suitable for machining the engine main shaft bearing inner ring with the inner diameter oil groove.

Description

technical field [0001] The invention relates to a mold for processing the inner ring of a bearing and a processing method. Background technique [0002] Aeroengine main shaft bearings have the characteristics of high temperature, high speed, and light load. In order to meet the high speed requirements of the engine, in addition to oil injection lubrication and splash lubrication, an under-ring lubrication method is added to the bearing design, that is, in the bearing. Several radial oil supply grooves corresponding to the shaft are provided on the inner diameter surface of the ring. The structure of the bearing inner ring of the existing aeroengine main shaft bearing is as follows: figure 1 As mentioned above, the inner ring of the bearing is circular, and the outer circumference of the inner ring of the bearing is provided with a raceway (2a), and the two sides of the raceway (2a) are ribs (3a) of the roller, and the ribs ( 3a) An axial annular oil groove (5a) is arranged...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the inner diameter of the bearing inner ring and the dimensional accuracy of the inner diameter oil groove are poor when the inner ring of the engine main shaft bearing containing the inner diameter oil groove is processed, the present invention proposes a mold and processing for processing the inner ring of the engine main shaft bearing containing the inner diameter oil groove method

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