Method of producing helical internal gear

Details Method of producing helical internal gear Method of producing helical internal gear

1987-12-10

1989-12-05

Spruill, Robert L.

Metal deforming

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

During rotation of work

72103, 72111, 72109, B21D 1504

Patent

active

048844276

ABSTRACT:
A method of forming a helical internal gear by cold work, wherein a hollow blank is fitted onto a die on a mandrel, which is provided on an outer periphery thereof with a helical tooth profile and, while the blank is clamped and held in both axial directions thereof, a roller is pressed onto an outer periphery of the blank in a direction perpendicular to an axis of the mandrel while rotating the blank together with the mandrel, whereby the hollow blank is plastically deformed along the helical tooth profile on the die, and then a helical internal gear is formed on an inner peripheral surface of the blank.

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patent: 3753365 (1973-08-01), Kralowetz
patent: 4428220 (1984-01-01), Rammesten
patent: 4452060 (1984-01-01), Kanamaru
patent: 4543813 (1985-10-01), Rogers

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