Process and apparatus for producing at least two forgings on a h

Details Process and apparatus for producing at least two forgings on a h Process and apparatus for producing at least two forgings on a h

1985-01-02

1986-05-27

Crane, Daniel C.

Metal deforming

With cutting

By composite tool

72327, 72334, 72354, 291484R, 83621, B21D 2806, B21D 5310

Patent

active

045907803

ABSTRACT:
Starting from a pre-heated bar, there is sheared-off first a portion (41) which, in a first forming stage of the machine, is formed into a tier shaped pressed article. In the second forming stage, the pressed article is further formed so that it has an inner ring (J), an outer ring (A) arranged co-axially to this and a radial annular web (S) connecting the two rings (J,A). The sheared-off outer ring (44) is therefore ejected in the next to last stage, while in the last working stage the inner ring (45) separated from the outer ring is subjected to further working. This last working stage involves stamping out a waste piece (35) and shearing-off an annular web (38). It is also possible to carry out a forming operation in this last working stage to upset the remaining inner ring (22a). By means of this process which provides for the elimination of the finished outer ring (44) in the last working stage, the radial annular web (38) can be supported over its full cross-sectional surface during the shearing-off operation.

REFERENCES:
patent: 1387638 (1921-08-01), Bingham
patent: 2308953 (1943-01-01), Brown
patent: 2913811 (1959-11-01), Benson
patent: 3336117 (1967-08-01), Borello
patent: 3496619 (1970-02-01), Constant
patent: 3602078 (1971-08-01), Schindler
patent: 3736827 (1973-06-01), Hof
patent: 3968674 (1976-07-01), Ishida

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