A Method for Controlling Residual Stress in Plastic Processing of Bearing Components

Abstract

The invention discloses a bearing assembly plastic processing residual stress regulation and control method. The method comprises the following steps that S10, the upper end surface and the lower endsurface of a formed bearing assembly are subjected to grinding and polishing; S20, a pulse current generator capable of generating continuous pulse currents is provided, reasonable processing parameters are set according to the material features and forming relevant parameters of the bearing assembly, and the pulse current generator is started to conduct pulse current treatment on the bearing assembly; if a bearing rolling body is arranged, and the single bearing rolling body is put into the pulse current generator to be subjected to multiple times of continuous pulse current treatment; and ifa bearing ring is arranged, the bearing ring is uniformly divided into S auxiliary zones in the circumferential direction, and the auxiliary zones of the bearing ring are sequentially subjected to multiple times of continuous pulse current treatment through the pulse current generator. According to the bearing assembly plastic processing residual stress regulation and control method, by controlling the plastic processing residual stress of the bearing assembly, the machining precision of a bearing is effectively improved, the dimension stability of the bearing is regulated and controlled, andaccordingly, the service life of the bearing is prolonged.

Description

technical field [0001] The invention belongs to the technical field of bearing manufacturing, and in particular relates to a method for controlling the residual stress of plastic processing of a bearing assembly. Background technique [0002] As the core basic components of mechanical equipment bearing and transmission, bearings are widely used in automobiles, aerospace, heavy machinery and other fields. The development level of bearing manufacturing technology represents a country's industrial technology level and competitiveness to a certain extent. Bearings are generally composed of rings (including inner rings and outer rings), rolling elements and cages. The comprehensive performance of bearing components, especially bearing rings and rolling elements, is directly related to the service life of bearings. [0003] In order to improve the performance of bearing components, it is usually necessary to modify their shape through processes such as plastic processing and heat ...

AI Technical Summary

Problems solved by technology

At present, stress relief annealing is usually used to eliminate and improve the residual stress generated by plastic working. However, this conventional heat treatment method is usually difficult to effectively reduce the residual stress and eliminate its adverse effects, and the heat treatment takes a long time and consumes a lot of energy. Serious Affect production cost and efficiency

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