Entrance contour design to streamline metal flow in a forging di

Details Entrance contour design to streamline metal flow in a forging di Entrance contour design to streamline metal flow in a forging di

1992-09-28

1994-01-04

Crane, Daniel C.

Metal deforming

Tool and/or tool holder

Tool comprising closed periphery deforming passageway

72260, 761071, B21C 2502, B21C 2510

Patent

active

052750469

ABSTRACT:
A forging die and a forging die manufacturing method for extruding helical gears wherein the lead end face of each die tooth is made up of harmonious S-shaped curves with each curve having maximized-radii contours. The shape of the S-shaped curves is formed by dividing the cylindrical surface at the lead end face and the full depth perimeter into an equal number of equally spaced points, connecting these points up into pairs so as to establish the shortest distance between the pairs of points and using these pairs as the end points for the S-shaped curves.

REFERENCES:
patent: 2764042 (1956-09-01), Gotze
patent: 3605475 (1971-09-01), Eakin
patent: 3910091 (1975-10-01), Samanta
patent: 4622842 (1986-11-01), Bachrach et al.
patent: 5052210 (1991-10-01), Hoge

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