Thin-walled bearing ring lathing process

Abstract

The invention discloses a thin-walled bearing ring lathing process. The thin-walled bearing ring lathing process includes the following steps of firstly, conducting rough lathing, wherein the outer circle, the inner hole, the ditch and the two end faces of a thin-walled bearing ring part are lathed in a numerical control mode, a balance of 0.3 mm to 0.5 mm is controlled to be reserved for the outer circle, a balance of 0.6 mm to 0.8 mm is reserved for the inner hole, a balance of 0.2 mm to 0.3 mm is reserved for the ditch, and a balance of 0.2 mm to 0.5 mm is reserved for the two end faces; secondly, conducting annealing, wherein the roughly-lathed thin-walled bearing ring part is annealed at a temperature of 650 DEG C to 680 DEG C for 3 hours to 4 hours and then cooled in a furnace till the temperature reaches 180 DEG C to 200 DEG C and cooled outside the furnace through air; thirdly, conducting fine lathing, wherein the outer circle, the inner hole, the ditch and the two end faces of the annealed thin-walled bearing ring part are latched in a numerical control module, and the sizes of the outer circle, the inner hole, the ditch and the two end faces are lathed into the sizes required by grinding. In this way, the machining deformation of a thin-walled bearing ring can be reduced, and the machining accuracy of a product can be ensured.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing, in particular to a thin-walled bearing ferrule turning process. Background technique [0002] Thin-walled bearings are designed for narrow structural space of the main engine or special performance requirements. When the ratio of the outer diameter to the inner diameter of the bearing is less than or equal to 1.143, it is called a thin-walled bearing. When processing thin-walled bearing rings, thermal deformation and vibration deformation are likely to occur under the action of cutting force, which affects the dimensional accuracy, shape and position accuracy of the parts, and causes them to deform. This is mainly due to two reasons: 1) When clamping the outer diameter or inner diameter, the clamped part will swell due to elastic deformation. At this time, the ellipticity of the inner diameter or outer circle of the part is not easy to guarantee, thus affecting the shape and size...

AI Technical Summary

Problems solved by technology

When processing thin-walled bearing rings, thermal deformation and vibration deformation are likely to occur under the action of cutting force, which affects the dimensional accuracy, shape and position accuracy of the parts, and causes them to deform. This is mainly due to two reasons: 1) When clamping the outer diameter or inner diameter, the clamped part will expand due to elastic deformation. At this time, the ellipticity of the inner diameter or outer circle of the part is not easy to guarantee, thus affecting the shape and size of the part; 2) The impact of the tool, Such parts are easily deformed under the action of cutting force, which can easily lead to uneven cutting amount and gap, etc., and are prone to taper when machining long inner holes

Due to improper processing methods, the problem of large deformation during processing has not been well resolved.