Process for machining L-shaped ferrule of rotary bearing

Abstract

The invention relates to a process for machining an L-shaped ferrule of a rotary bearing. A repeated annealing process in machining an L-shaped circular hole with larger cutting output can eliminate a part of grinding stress produced by machining so as to stabilize tissues, prevent the deformation of the ferrule caused by the redistribution of the stress and improve the dimensional stability of the ferrule.

Description

technical field [0001] The invention relates to a processing technology of a ferrule, in particular to a processing technology of an L-shaped ferrule of a slewing bearing. Background technique [0002] The traditional processing method of the "L" type ring of the slewing bearing is as follows: first process the forging billet into a ring, and carve out the sealing groove and raceway on the surface of the ring, and then quench and temper the raceway of the ring , and finally expand the inner hole of the ring into an L-shaped hole, and hard turn the outer circle, inner hole, end face and raceway of the ring to the finished size to obtain an L-shaped ring for the slewing bearing. [0003] Due to the process of hardening the surface of the car, local heat will be generated, which will cause the martensite near the surface to decompose again. At the same time, it will also cause plastic deformation and work hardening on the surface of the quenching, resulting in tensile stress on...

AI Technical Summary

Problems solved by technology

And because the L-shaped ring needs to process the L-shaped round hole after the raceway is quenched, the turning amount is large, and the effective gear changes greatly, which makes the stress distribution on the surface change seriously after quenching, resulting in the change of the size of the ring and the product quality. not meet the requirements

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