Bearing having arch-shaped recesses and method of manufacturing

Details Bearing having arch-shaped recesses and method of manufacturing Bearing having arch-shaped recesses and method of manufacturing

1994-11-10

1995-12-05

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

29898058, B21K 2116

Patent

active

054718627

ABSTRACT:
An annular bearing has its bearing surface on the inner surface. The bearing surface is formed to improve bearing properties, that is, to improve adaptability to an impact load and an imbalanced load. A method of manufacturing a bearing having such a bearing surface is given. An annular bearing blank, together with a mandrel having a plurality of arch-shaped ridges extending axially on the outer surface of the mandrel and a sleeve fitted on a periphery of the mandrel, is pushed into an inner hole of a molding die. The material is accordingly closed in a space defined by the mandrel, the inner hole, the sleeve and an ejector inserted into the bottom part of the inner hole. Thus, a plurality of arch-shaped recesses are formed extending axially on the inner surface of the bearing blank.

REFERENCES:
patent: 1722787 (1929-07-01), Claus
patent: 1731790 (1929-10-01), Payne
patent: 2660076 (1953-11-01), May
patent: 4748862 (1988-06-01), Johnston
patent: 4785648 (1988-11-01), Budrean et al.

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