Apparatus for forming gears

Details Apparatus for forming gears Apparatus for forming gears

1983-01-10

1985-10-15

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

With stripping or ejecting from tool

72256, B21C 2300

Patent

active

045466351

ABSTRACT:
A gear is formed in a gear-forming apparatus including a die block formed with an axial bore and a plurality of teeth radially projecting into the bore and having lead-in portions adjacent one axial end of the bore, and an elongated mandrel axially movable into the bore, by placing at least one blank in position outside the die block and adjacent the axial end of the bore, causing the mandrel to extend through the center hole in the blank; forcing the blank into the bore from the axial end of the bore until the blank is moved past the teeth of the die block so that the blank is caused to form gear teeth on its outer peripheral surface by the teeth of the die block; driving at least one of the die block and the mandrel to move with respect to each other so that the gear resulting from the blank is withdrawn together with the mandrel out of the bore in the die block; and removing the gear from the mandrel outside the die block.

REFERENCES:
patent: 2251135 (1941-07-01), Iknayan
patent: 3605475 (1971-09-01), Eakin et al.
patent: 3813909 (1974-06-01), Roger
patent: 3910091 (1975-10-01), Samanta
patent: 4425829 (1984-01-01), Kranik
patent: 4509353 (1985-04-01), Ike

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