Manufacturing technology of high-speed high-temperature precise deep-groove ball bearing

Abstract

The invention discloses a manufacturing technology of a high-speed high-temperature precise deep-groove ball bearing. The manufacturing technology comprises the steps that a forging blank is machinedinto a workpiece blank with an outer ring and an inner ring, the workpiece blank is subjected to the technological process of technologies such as cold rolling and expanding, heat treating, rough grinding, heat stabilizing, fine grinding and grinding, checked and then subjected to the technological process of a cleaning and assembling technology, and a whole-set bearing product is manufactured; the cold rolling and expanding technology comprises the steps that a cold rolling and expanding machine tool is adopted, a driving molding rolling wheel serves as a mold outer mold, a driven molding core rod serves as a mold inner mold, the molding rolling wheel drives the workpiece blank to rotate, a supporting wheel pushes the molding core rod to move forwards to feed and extrude the workpiece blank, and rolling and expanding molding is achieved; the heat stabilizing technology comprises the steps that heat preservation is conducted on a workpiece obtained after rough grinding for 4 hours at 400 DEG C in a tempering furnace, and the workpiece is taken out of the furnace and naturally cooled; and for the whole-set bearing, the limit rotation speed is 12,000 r / min, the limit working temperature is 160 DEG C, the working noise is lower than or equal to 45 dB, and the rated load is Cr 41.2 KN and Cor 24 KN. According to the manufacturing technology of the high-speed high-temperature precise deep-groove ball bearing, the manufacturing precision is high, and the matching performance is good.

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...

AI Technical Summary

Problems solved by technology

In some occasions where there is an urgent need for high-speed frequency-adjustable, high-temperature, low-noise high-precision sealed deep groove rolling bearings, the existing technology cannot meet the needs of industrial production and special product development.