Method for generating of gear-shaped precision-working tools, in

Details Method for generating of gear-shaped precision-working tools, in Method for generating of gear-shaped precision-working tools, in

1993-05-14

1995-01-03

Rose, Robert A.

Abrading

Abrading process

Gear or worm abrading

451 48, 407 27, 409 37, 409 49, B24B 53085

Patent

active

053774574

ABSTRACT:
Gear-shaped precision-working tools, in particular shaving gears, capable of providing an optimum machining result only during a portion of their entire lifetime, since during each regrinding (generating), the profile displacement factor, and thus the number of the tooth flanks which engage successively and simultaneously one after the other the workpiece gear to be machined, is changed. This is remedied with the invention in such a manner that the precision-working tool is reground (generated) while maintaining the original number of teeth (z) and the original normal module of the pitch angle (.beta.), the module in transverse section and the base circle diameter are changed in such a manner that little or no change occurs to an original profile displacement factor (x). When the tool, which is to be reground (to be generated) in this manner, has grooved tooth flanks (12, 13), for grooves (14) increases continuously from a first groove (14') mutually adjacent one end of a tooth flank (12, 13) up to a second groove (14") mutually adjacent an other end of the same tooth flank, the grooves (14") having the greatest depth and the grooves (14') having the least on mutually adjacent and opposing tooth flanks (12, 13) opposing one another.

REFERENCES:
patent: 2164642 (1939-07-01), Drader
patent: 2338061 (1943-12-01), Ross
patent: 2394469 (1946-02-01), Norton, Jr.
patent: 3180227 (1965-04-01), Schlichthoerlein
patent: 4848040 (1989-07-01), Nishino
Maschinen-Elemente by G. Niemann and H. Winter Springer-Verlag Berlin, Heidelberg, New York, Tokyo 1983 (2 pages).

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