Metal working – Method of mechanical manufacture – Process for making bearing or component thereof
Patent
1994-12-08
1996-12-03
Cuda, Irene
Metal working
Method of mechanical manufacture
Process for making bearing or component thereof
2989811, 2989802, 29557, B23P 1500
Patent
active
055795790
ABSTRACT:
A method for forming a precision groove in a cylindrical surface of an article such as a sleeve-shaft hydrodynamic journal bearing system includes the steps of: aligning a groove-forming machine to an axial datum plane of the article defined in a spaced-apart relation with the cylindrical surface by a predetermined nominal first dimension, translating the groove-forming machine in an axial direction toward and upon a first edge of the cylindrical surface by an amount equal to the predetermined nominal first dimension and thereupon forming a first groove axial step segment in the cylindrical surface until a second predetermined axial datum plane is reached, simultaneously axially translating and rotating the groove-forming machine from the second axial datum plane until a third predetermined axial datum plane is reached and thereupon forming the precision groove pattern in the cylindrical surface between the second axial datum plane and the third axial datum plane, and axially translating the groove-forming machine from the third predetermined axial datum plane until a second edge of the cylindrical surface is reached and thereupon forming a second groove axial step segment in the cylindrical surface from the third axial datum plane to the second edge.
REFERENCES:
patent: 2156337 (1939-05-01), Hale
patent: 2164902 (1939-07-01), Coleman
patent: 2683928 (1954-07-01), Carson
patent: 4596474 (1986-06-01), Van Roemburg
patent: 4798480 (1989-01-01), Van Beek
patent: 5112142 (1992-05-01), Titcomb et al.
patent: 5265334 (1993-11-01), Lucier
J. Bootsma, "Liquid-Lubricateed Spiral-Groove Bearings", Philips Research Reports Supplements 1975 No. 7, table of contents and pp. 154-173.
Chun Debra A.
Cuda Irene
Harrison David B.
Kubida William J.
Quantum Corporation
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