Apparatus for making bevel gear

Details Apparatus for making bevel gear Apparatus for making bevel gear

1975-09-26

1977-02-22

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

291592, 72358, 72377, B21D 2200, B21D 5328

Patent

active

040085996

ABSTRACT:
A die with bevel gear-forming cavity, a punch and a sleeve-like counter punch are constructed for press-forming cylindrical blanks. The punch has a diameter about equal to the circle defined by the intersection of the pitch cone with the low diameter bottom of the die cavity. The counter punch has a frusto-conical projection reaching in the cavity and is held until the die cavity is filled underneath, whereafter the counter punch retracts at a declining speed to fill the remainder of the cavity by radial flow.

REFERENCES:
patent: 3174318 (1965-03-01), Fox
patent: 3731516 (1973-05-01), Dohmann et al.
patent: 3803896 (1974-04-01), Cermal
patent: 3832763 (1974-09-01), Schober

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