A high-speed high-temperature precision deep groove ball bearing manufacturing process

Abstract

The invention discloses a manufacturing technology for a high-speed and high-temperature precision deep groove ball bearing. A complete set of bearing product is manufactured by processing a forge piece blank into a workpiece billet with an outer ring and an inner ring, then respectively performing technical processes of respective technologies of cold rolling, thermal treatment, coarse grinding, thermal stabilization, fine grinding, grinding and the like, performing inspection and then performing cleaning and assembling. In the cold rolling technique, a cold rolling machine tool is used, a main driving forming rolling wheel is used as an outer die of a mold, and a driven forming mandril is used as an inner die of the mold, so that the forming rolling wheel drives the workpiece billet to rotate, and a supporting wheel pushes the forming mandril to forwards feed and extrude the workpiece billet to roll and form a product; in the thermal stabilization technique, the workpiece subjected to coarse grinding is subjected to heat preservation in a tempering furnace at temperature of 400 DEG C for 4 hours and then is taken out for natural cooling. The limit rotating speed of the complete set of bearing is 12,000 r / min, and the limit working temperature is 160 DEG C; the working noise is less than or equal to 45 dB; the rated load is Cr41.2KN and Cor24KN. The manufacturing precision is high, and the matching performance is high.

Description

technical field

[0001] The invention relates to a rolling bearing manufacturing process, in particular to a high-speed ball bearing manufacturing process. Background technique

[0002] Bearing is an indispensable basic component in the industrial society. It has a wide variety and a wide range of applications. Over the years, it has formed a standardized and generalized specialized production, and is developing in the direction of high precision, high speed and high temperature. Taking the 6300 series precision deep groove ball bearings produced by Harbin Bearing Manufacturing Co., Ltd., an authoritative manufacturer of deep groove ball bearings in China, as an example, the main production processes are: car inner diameter, outer diameter; soft grinding plane, outer diameter; car raceway, car installation Groove; heat treatment; hard grinding plane, outer diameter, inner diameter, raceway; cleaning, fitting, measuring, grease injection, oiling, packaging. The main technical...