Precision ring rolling technique and application in high-performance bearing manufacturing

Lin Hua,Dongsheng Qian,Jiadong Deng,Y Qin,J Lin,T A Dean,S J Yuan,F Vollertsen

doi:10.1051/matecconf/20152103002

Lin Hua, Dongsheng Qian + Show 6 more

Open Access

https://doi.org/10.1051/matecconf/20152103002

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Abstract

High-performance bearing has significant application in many important industry fields, like automobile, precision machine tool, wind power, etc. Precision ring rolling is an advanced rotary forming technique to manufacture high-performance seamless bearing ring thus can improve the working life of bearing. In this paper, three kinds of precision ring rolling techniques adapt to different dimensional ranges of bearings are introduced, which are cold ring rolling for small-scale bearing, hot radial ring rolling for medium-scale bearing and hot radial-axial ring rolling for large-scale bearing. The forming principles, technological features and forming equipments for three kinds of precision ring rolling techniques are summarized, the technological development and industrial application in China are introduced, and the main technological development trend is described.

Highlights

Bearings are the key basic components of mechanical equipment for bearing load and transmitting power
Three kinds of precision ring rolling techniques adapt to different dimensional ranges of bearings are introduced, which are cold ring rolling for small-scale bearing, hot radial ring rolling for medium-scale bearing and hot radial-axial ring rolling for large-scale bearing
Bearings which are used in precision numerical control (NC) machine tool, high-speed railway, wind power, aircraft engine, etc. are owning precise size, and working with long life and high reliability in the strict conditions of high speed, heavy load, high temperature and impact load

Summary

Introduction

Bearings are the key basic components of mechanical equipment for bearing load and transmitting power. Are owning precise size, and working with long life and high reliability in the strict conditions of high speed, heavy load, high temperature and impact load Ring rolling is a precise rotary forming technique to manufacture seamless rings, which makes rings producing local plastic deformation continuously to reduce wall-thickness, enlarge diameter and shape profile by rotation driving and linear feeding of the rolls [1, 2]. In this way, the required geometry size and microstructure property are obtained. Ring rolling has been widely applied in bearing ring manufacturing and become an indispensable and advanced forming technology to manufacture high-performance bearings

Cold ring rolling for small-scale bearing ring

Hot radial-axial ring rolling for large-scale bearing ring

Development and application of precision ring rolling for bearing ring

Precision cold ring rolling technology

Findings

Development trend of precision ring rolling technology for bearing ring