Method and machine for fabricating rotation bodies by plastic de

Details Method and machine for fabricating rotation bodies by plastic de Method and machine for fabricating rotation bodies by plastic de

1988-03-11

1989-04-04

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

72 94, 72 95, B21H 122

Patent

active

048174084

ABSTRACT:
A process and machine for fabricating a rotation body having different diameters along the length thereof is disclosed, in which a blank is rotated and worked between two pressure zones to apply thereto a local pressure exceeding the flow limit of the blank material whereby circularly extending impressions of the different diameters are worked into the blank, the pressure zones crossing each other. The pressure zones are displaced relative to each other while applying the local pressure, the displacement motion having a component extending in the longitudinal direction of at least one of the pressure zones and the points of intersection of the crossing pressure zones forming a geometric line, and the blank is displaced in dependence on this line and on the different diameters to be produced.

REFERENCES:
patent: 425516 (1890-04-01), Leavy
patent: 2060087 (1936-11-01), Klamp

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