Curing device and curing method for precisely controlling no-load starting torque of bearing

Abstract

The invention discloses a curing device and a curing method for precisely controlling the no-load starting torque of the bearing. The curing device is used for curing the self-lubricating liner of the finished spherical plain bearing. The curing device includes an outer taper sleeve, an inner taper sleeve and a mandrel. The outer cone sleeve is provided with a tapered hole, the outer wall of the inner cone sleeve has a tapered surface, and the cone surface of the inner cone sleeve is nested and matched with the tapered hole of the outer cone sleeve; the central shaft portion of the inner cone sleeve is provided with a positioning hole , the lower part of the positioning hole is provided with a stop surface, the outer ring of the self-lubricating spherical plain bearing is sleeved in the positioning hole, the lower end surface of the outer ring is limited to the stop surface, and there is a clearance fit between the outer ring and the positioning hole; The core shaft is sleeved on the inner hole of the self-lubricating spherical plain bearing. By adopting the above technical solutions, the joint bearing can maintain the curing pressure at high temperature, and at the same time, after curing, it can swing flexibly without torque rolling treatment.

Description

technical field [0001] The invention relates to the field of solidification of self-lubricating pads of joint bearings, in particular to a solidification device and a solidification method for accurately controlling the starting torque of the bearing without load. Background technique [0002] T-type self-lubricating radial spherical plain bearing is a kind of spherical plain bearing. Its typical feature is that a layer of self-lubricating liner is pasted on the inner spherical surface of the outer ring. It does not need lubrication during use and can swing flexibly. [0003] The conventional processing method of T-type self-lubricating radial spherical plain bearing adopts the process of "extrusion→curing→finishing→rolling". After extrusion, the adhesive is cured at high temperature by heating. The pressure of the pad is gradually reduced, which is detrimental to the bond strength of the pad. At the same time, the bearing is not subjected to torque treatment after curing a...

AI Technical Summary

Problems solved by technology

[0003] The conventional processing method of T-type self-lubricating radial spherical plain bearing adopts the process of "extrusion→curing→finishing→rolling". After extrusion, the adhesive is cured at high temperature by heating. The pressure of the pad gradually decreases, which is detrimental to the bond strength of the pad

At the same time, the bearing has not been subjected to torque treatment after solidification and finishing, and the inner and outer rings cannot swing. The conventional torque treatment method is to deform the raceway by rolling the outer ring of the bearing, so the precision of the raceway will be reduced after rolling. The ring and the self-lubricating liner have residual stress, and the stress will be released slowly during the subsequent storage process, which will cause changes in the no-load starting torque of the bearing, and there may even be a risk of out-of-tolerance no-load starting torque

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