Optimal Design of the Process for Self-lubricating Spherical Plain Bearings Based on Finite Element Analysis

Abstract

As a key technology for forming of self-lubricating spherical plain bearing, extrusion forming process affects general performances of self-lubricating spherical plain bearing. In order to solve the problems of insufficient force of the extruder and material accumulation of outer ring blank in the extrusion process of wide series and large bearing, a scheme of machining extrusion groove on outer ring blank is put forward, and taken numerical simulation by explicit dynamic finite element code LS-DYNA. Effective plastic plain and effective stress and bearing osculation after springback are investigated as well as applied extrusion force. The experimental results show that the bearing osculation can meet the requirement after machining extrusion groove on outer ring blank, meanwhile, a smaller extrusion force is needed in the extrusion forming process.