Cutters – for shaping – Including noncutting work modifying means
Patent
1982-07-26
1985-04-09
Vlachos, Leonidas
Cutters, for shaping
Including noncutting work modifying means
29 90R, 72123, 408 22, B24B 3900, B24B 3902
Patent
active
045098859
ABSTRACT:
A skiving and roller burnishing tool includes a plurality of frustoconically tapered rollers and a retractable knife for use in combination for finishing the internal surface of a cylindrical hole. The roller burnishing tool includes a roller race having a central axis and a frustoconical outer surface tapering radially outward and axially forward. The rollers are arranged about the outer surface of the race for rolling engagement with the internal surface of the hole. The smaller ends of the rollers face forward, and the taper of the rollers is such that the outermost surface portion of each roller is parallel to the central axis of the race. The rollers are biased in the forward direction using a roller pusher with a chosen force so that the force exerted on the internal surface of the hole remains constant over a range of sizes of the hole. The retractable knife includes a pair of radially extendible knife holders defining a camming path having an axial portion and an angled portion. A push dart has a camming element with complementary camming surfaces which ride along the camming path. Axial actuation of the push dart causes the knife holders to extend radially into a stable, locked position.
REFERENCES:
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patent: 3791000 (1974-02-01), Kunze
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patent: 3980442 (1976-09-01), Riekeles
patent: 4133089 (1979-01-01), Heymanns
patent: 4367576 (1983-01-01), Dickinson
patent: 4380851 (1983-04-01), Dickinson
patent: 4425693 (1984-01-01), Dickinson
Kearns Jerry
Vlachos Leonidas
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