Method and device for the manufacture of helical rotor blanks fo

Details Method and device for the manufacture of helical rotor blanks fo Method and device for the manufacture of helical rotor blanks fo

1979-02-22

1981-09-08

Larson, Lowell A.

Metal deforming

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

During rotation of work

72145, 72371, B21D 1106

Patent

active

042877431

ABSTRACT:
The method and device for the manufacture of helical rotor blanks for helical gear machines by moving a straight cylindrical shaft in a direction along the shaft axis while rotating it around the shaft axis by means of passing the shaft between at least three bending rollers, and the opposite end of the shaft held by a rotatable clamping chuck geared for infinitely variable timed relative movement with a bending roller. A first bending roller has a ring groove with a circular arc profile and a second bending roller ring groove has an elliptical profile with the second ring groove either laterally displaced or of greater width than the ring groove in the first bending roller.

REFERENCES:
patent: 717552 (1903-01-01), Depew
patent: 3740811 (1973-06-01), Kozusnik

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