Method and apparatus for finishing grooved articles

Details Method and apparatus for finishing grooved articles Method and apparatus for finishing grooved articles

1990-10-24

1992-12-29

Gorski, Joseph M.

Metal working

Plural diverse manufacturing apparatus including means for...

Type of machine

118107, 118320, B23B 700

Patent

active

051740010

ABSTRACT:
Grooves in an article such as a commutator are filled with a soft brittle material before a grooved surface of the article is cut. With the grooves thus filled, the cutting is performed continuously and smoothly without involving formation of burrs projecting into the groove. The soft brittle material includes a water soluble material which can easily be removed from the grooves by merely immersing the article in water. Preferably, the soft brittle material comprises a sublimable material which is self-vanishing or disappearing as it undergoes sublimation to the vapor state when it is left to stand in the atmosphere.

REFERENCES:
patent: 2626222 (1953-01-01), Spencer
patent: 2967347 (1961-01-01), Rhea
patent: 3399649 (1968-09-01), Kidgell et al.
patent: 3991152 (1976-11-01), Santi et al.
patent: 4643863 (1987-02-01), Martini
patent: 4653965 (1992-07-01), Fry et al.
patent: 4850302 (1989-07-01), Hoffman

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