Method and device for finishing a concave spherical bearing surf

Details Method and device for finishing a concave spherical bearing surf Method and device for finishing a concave spherical bearing surf

1989-11-02

1991-06-25

Smith, James G.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51217T, 51217L, B24B 100

Patent

active

050255959

ABSTRACT:
A segment (14) is held for the purpose of grinding its spherical internal bearing surface (10). A toric external surface (18) is supported by claws (21) against fixed (17) and movable (19) seats in such a manner as to have a center (T) and an axis (UU') accurately positioned relative to a mount (16). A cup type grinding wheel (23) having a spherical operative surface (23a) infeeds along its axis of rotation (MS), which intersects, at a center (S) desired for the spherical bearing surface, an axis (ZZ') about which the mount (16) and the segment (14) oscillate. A sensor in contact with the bearing surface (10) controls the halting of the infeed of the grinding wheel when the radial thickness dimension of the segment is reached. A surface suitable for hydrodynamic lubrication is directly obtained by grinding, with where desired, an eccentricity (e) between the toric surface and the spherical bearing surface.

REFERENCES:
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The Tool and Manufacturing Engineer, vol. 53, No. 4, Oct. 1964, p. 58, Society of Manufacturing Engineers, Milwaukee, U.S.; "Fixture Aligns Castings for Machining--Disregards Shifted Cores".

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