Machine part with improved surface texture for rolling contact a

Details Machine part with improved surface texture for rolling contact a Machine part with improved surface texture for rolling contact a

1996-03-04

1997-07-01

Rose, Robert A.

Abrading

Abrading process

Tumbling

451 28, 451 49, 451 51, 451 57, 384492, 384490, 384569, B24B 100

Patent

active

056430540

ABSTRACT:
A machine part includes a surface suitable for rolling contact and/or sliding contact on another machine pad and made by an at least two-stage honing process, with a first honing step effecting a surface texture exhibiting a plurality of peaks and a plurality of pits and defining a mean profile line, and a second honing step for removal of the peaks to a level of the mean profile line for forming a plateau-like tenure that is interrupted by crossing pits, whereby the depth of the pits from the first honing step is maintained. Subsequently, abrasive grain is pushed into the surface for creating a crater-like recess, thereby displacing material at random in horizontal and venial directions for at least partially closing the pits. Mounds created during material displacement and positioned above the mean profile line are removed through a subsequent polishing process.

REFERENCES:
patent: 3579933 (1971-05-01), Snell
patent: 5064298 (1991-11-01), Hibi et al.
patent: 5331775 (1994-07-01), Carmichael et al.
patent: 5333954 (1994-08-01), Noguchi et al.
patent: 5397188 (1995-03-01), Yoshizuka et al.
patent: 5456538 (1995-10-01), Honda et al.
patent: 5520987 (1996-05-01), Narai et al.
BRM Catalog--The necessity of a Plateaued Cylinder Wall Finish May 1979.

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