Method and apparatus for manufacturing a cold-forged shaft

Details Method and apparatus for manufacturing a cold-forged shaft Method and apparatus for manufacturing a cold-forged shaft

1991-07-08

1992-07-07

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

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

72352, 2989334, B21D 2200

Patent

active

051272539

ABSTRACT:
A shaft is cold-forged to have a shaped portion at one end of the shaft and a flange portion at a middle of the shaft. A taper portion is provided at a root of the flange portion on the opposite side thereof to the shaped portion. The shaped portion is formed by forward extrusion of a bar material, and the flange portion is formed by upsetting. The taper portion is formed by extruding the root of the flange portion to provide a gently inclined continuous connection between the flange portion and an adjacent portion of the shaft. The apparatus for manufacturing the shaft has at least a first set of dies, at least a second set of dies, and a conveyance system for transferring the shaft between the die sets.

REFERENCES:
patent: 3124876 (1964-03-01), Putetti
patent: 3188849 (1965-06-01), Wisebaker et al.
patent: 3688374 (1972-09-01), Goldsmith
Draht, Vo. 35, No. 1, Jan. 1984, "Querfliesspressen eines Bundes an Vollkorpern aus Stahl".

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