Ball-spinning device and method of integrated outer ring typed self-lubricating spherical plain bearing

Abstract

The invention relates to a ball-spinning device and a method of integrated outer ring typed self-lubricating spherical plain bearing. An upper die holder of the device is provided internally with inner conical rings, retainers are fixed to the inner conical rings to constrain large, medium and small groups of balls in the corresponding raceways, a mandrel is mounted in a center counter bore of a baseplate, and the baseplate is connected with a lower die through bolts. The method includes processing the inner surface of the outer ring blank of the spherical plain bearing into a process optimized shape, and attaching a self-lubricating layer thereto; allowing the inner surface of the forming side of the outer ring blank to fit on the inner ring of the bearing in a shape follow-up mold by the aid of the forming device; and performing turning and grinding to the end face and the outer surface of the outer ring of the bearing to obtain the integrated outer ring typed self-lubricating spherical plain bearing. During the forming process, the inner ring of the bearing is flexibly contacted with the outer ring of the bearing, thus no damage to the self-lubricating layer occurs, ball flow forming transformation is uniform, forming force is small, and ease in controlling can be achieved.

Description

technical field [0001] The invention belongs to the field of joint bearing processing and manufacturing, in particular to a ball spinning forming device and forming method of an integral outer ring type self-lubricating joint bearing. Background technique [0002] Self-lubricating joint bearings are composed of an inner ring with an outer spherical surface, an outer ring with an inner spherical surface and a self-lubricating layer. According to the structure of the outer ring, it is divided into: non-integral type and integral type. The self-lubricating layer on the inner spherical surface of the outer ring is a key part of the spherical plain bearing. During the manufacturing process, there is no damage and the clearance condition that meets the requirements of the finished spherical plain bearing is formed, which plays a decisive role in its performance. The outer ring and the surface of the self-lubricating layer are integrated non-integral outer ring self-lubricating sp...

AI Technical Summary

Problems solved by technology

[0004] In order to improve the deficiencies of the existing production process of spherical plain bearings, which easily cause crushing damage, low product yield, and low reliability of the self-lubricating layer, the present invention provides a ball spinning forming device for integral outer ring type self-lubricating spherical plain bearings and Forming method

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