Powder compacting apparatus and method of forming helical gear w

Details Powder compacting apparatus and method of forming helical gear w Powder compacting apparatus and method of forming helical gear w

1997-08-19

2000-12-05

Silbaugh, Jan H.

Powder metallurgy processes

Forming articles by uniting randomly associated metal particles

Consolidation of powders

425355, 425356, 425DIG5, 425 78, B22F 300

Patent

active

061562653

ABSTRACT:
In the case where an upper punch and a die are made rotatable, a lower punch that is fixed in a conventional example is rotatably supported. Further, a guide mechanism with fixed helical lead for guiding the die is constructed of a guide whose lead is identical to a lead of helical gear contour, and a cam follower that engages with the guide. The guide and the cam follower are arranged so as to correspond to the die and a part with fixed helical lead that is a newly arranged component in the invention. The meshed portion between the helical gear contours of the upper and lower punches and helical gear contours formed on a die or a core rod is free from any excessive force even when a lead-phase shift occurs between helical gears formed on upper and lower punches due to the flexing of the punches during compression.

REFERENCES:
patent: 3694127 (1972-09-01), Takahashi et al.
patent: 3909167 (1975-09-01), Signora

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