Method of forging flanged shaft

Details Method of forging flanged shaft Method of forging flanged shaft

1982-09-21

1986-02-25

Larson, Lowell A.

Metal deforming

With temperature modification of tool or of specified...

Cooling

72356, 72352, 72359, B21D 3716, B21D 2200

Patent

active

045719772

ABSTRACT:
A forging method for producing a flanged shaft such as, for example, a crankshaft, provided at its intermediate portion with a flange with the flanged shaft being formed from a blank having a diameter which is smaller than the diameter of the shaft end portions but large enough to prevent buckling of the blank when the latter is compressed in the axial direction. The blank is placed within a closed die apparatus and is axially compressed by a punch so that it is possible to produce the flanged shaft at a high dimensional precision and at a high yield, while reducing the time and labor for finishing work conducted after the forging, without requiring any large-size press.

REFERENCES:
patent: 537577 (1895-04-01), Mason
patent: 2169892 (1939-08-01), Criley
patent: 3680381 (1972-08-01), Porral
patent: 4317355 (1982-03-01), Hatsumo et al.
patent: 4425779 (1984-01-01), Diemer et al.

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