Process for preparing a pole piece for the rotor of a generator

Details Process for preparing a pole piece for the rotor of a generator Process for preparing a pole piece for the rotor of a generator

1976-08-17

1977-08-16

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

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

72377, B21D 2200

Patent

active

040417549

ABSTRACT:
A process for preparing a pole piece having spiders bent in the axial direction for the rotor of a generator in which a slug is obtained from a round metal bar, said slug is upset to a disc-shaped member, said member is formed with a plurality of radially and outwardly extending spiders on the outer periphery of and a boss on one surface of said member, said spiders are tapered on one surface and an annular bending recess is formed in said one surface of the spiders, said spiders are bent at said annular bending recess until the outer surface of the spiders lie on a plane right angles to the plane of said member to provide a semiprocessed product, and said semiprocessed product is in succession subjected to coining and sizing steps to thereby provide a complete pole piece having spiders bent in the axial direction.

REFERENCES:
patent: 3036366 (1962-05-01), Ricks
patent: 3186209 (1965-06-01), Friedman

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