Metal deforming – By use of tool acting during relative rotation between tool... – Spherical tool
Patent
1994-10-28
1996-08-20
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
Spherical tool
B21H 718
Patent
active
055467806
ABSTRACT:
A helical groove for conducting lubricant is formed in an internal cylindrical surface of a bearing member by pressing a plurality of balls against the surface while effecting relative longitudinal and rotational movement between the bearing member and a ball-carrier which carries the balls. The balls roll along the cylindrical surface and press-form the helical groove therein. To enable the ball carrier to be inserted into the bearing, the balls are held in a retracted state by applying a vacuum to the balls.
REFERENCES:
patent: 3066557 (1962-12-01), Stevens
Larson Lowell A.
Samsung Electronics Co,. Ltd.
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