| 摘要 |
1,204,354. Forging bearings. W. SCHAEFFLER and G. SCHAEFFLER, [trading as INDUSTRIEWERK SCHAEFFLER OHG]. 5 Dec., 1967 [28 Jan., 1967], No. 55181/67. Headings B3A and B3H. [Also in Division F2] A cup-shaped bearing shell 1 is preformed without machining, and the base 2 of the shell then subjected to a pressing operation while the cylindrical portion of the shell is confined in a die, so that a sharp edge is formed at the junetion of the base and portion. The preformed shell is supported internally by a plunger 13 while a plunger 16 is forced against the outer surface of the base. |
