Invention Grant
- Patent Title: Method of manufacturing bearing races by rolling
- Patent Title (中): 通过滚压制造轴承座的方法
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Application No.: US37765373Application Date: 1973-07-09
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Publication No.: US3857147APublication Date: 1974-12-31
- Inventor: GERAT J
- Applicant: ROULEMENTS SOC NOUVELLE
- Assignee: NTN-SNR Roulements
- Current Assignee: NTN-SNR Roulements
- Priority: FR7228787 1972-08-09
- Main IPC: B21H1/12
- IPC: B21H1/12
Abstract:
Method of rolling outer races of bearings in a die by means of a rolling tool roller operating under overhanging conditions in a blank of the race to be rolled, which consists in cold treating the race blank having a smaller diameter than said die, the treatment comprising preliminary rotating the roller at its contemplated rolling speed in the blank and, under constant stress conditions, causing the roller to penetrate into the blank, rolling this blank until the die is filled therewith, upsetting the blank material laterally while gauging the race, and then producing an initially slow backward movement of the roller in order to preserve the aforesaid gauging.
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