Tooth forming rack with replaceable inserts

Details Tooth forming rack with replaceable inserts Tooth forming rack with replaceable inserts

1976-02-13

1977-06-14

Mehr, Milton S.

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

72469, 72481, B21H 502

Patent

active

040289214

ABSTRACT:
An improved tool in the form of a tooth forming rack for cold working a cylindrical workpiece to form teeth thereon to produce, for example, a toothed gear is provided. The rack comprises a plurality of releasable inserts mounted on a tool holder. The inserts are of the throw-away type which enables replacement of only that portion of the rack that is worn or broken, thus extending the ueful life of the entire rack. In a first embodiment the inserts are releasably attached to the tool holder by threaded capscrews. In an alternate embodiment a milled slot within the inserts permits retention by means of tapered retainers attached to the tool holder by threaded capscrews.

REFERENCES:
patent: 2161610 (1939-06-01), Boggild
patent: 3019677 (1962-02-01), Cermatori
patent: 3283559 (1966-11-01), Clerk
patent: 3818736 (1974-06-01), Blue
patent: 3910099 (1975-10-01), Wilson

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