Method for manufacturing a rotationally symmetrical work-piece o

Metal deforming – By use of tool acting during relative rotation between tool... – With cutting of work or product

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72 83, B21B 2706, B21D 500, B21D 2214

Patent

active

057181403

ABSTRACT:
A method for manufacturing a work-piece which is rotationally symmetrical about an axis is provided wherein the work-piece has a spindle and at least one hollow member connected with the spindle by a hub part extending in radial direction. The method includes the steps of producing a work-piece blank having the rotationally symmetrical spindle and an integral, rotationally symmetrical, radially outwardly extending circumferential flange; mechanically processing the work-piece blank by at least one of boring, turning, milling, pressing, and grinding; and rolling a radially outer part of the flange to form the hollow member and leaving a remainder of the flange unchanged to form the hub. A roller is also provided for radially splitting the flange into three wings. The roller has two axially spaced splitting edges separated by a groove which has a rectangular cross-section.

REFERENCES:
patent: 2379584 (1945-07-01), Litton
patent: 3566503 (1971-03-01), Pacak
patent: 4532786 (1985-08-01), Schaible
patent: 4936129 (1990-06-01), Lipper et al.

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