Robert W Guetzlaff

US Patent:

40832155, Apr 11, 1978

Filed:

Feb 11, 1976

Appl. No.:

5/657154

Inventors:

Robert Paul Guetzlaff - Waterloo IA

Assignee:

Deere & Company - Moline IL

International Classification:

B21D 2216

US Classification:

72 82

Abstract:

The method disclosed herein briefly includes the steps of (1) forming a pair of nestled cup-like pulley hubs having radially extending flanges in side-by-side relationship and (2) rotating the nestled hubs about a rotating axis while simultaneously urging a tapered projection on the inner surface of a rotatable, annular forming tool between the side-by-side flanges to spread the flanges and form a V groove with only minor relative rotary motion between the flanges and forming tool in their areas of contact. By having the working portion of the forming tool formed on the inner portion of a rotatable, annular tool, relative rotary movement between the flanges and tool and hence galling of the flanges is kept at a minimum. The tool disclosed herein is an annular groove forming tool having the working portion thereof formed on the inner surface of the tool, the tool including the means for mounting on the same on a spinning lathe so that the tool can be used while the pulley is rotated on the lathe spindle.

US Patent:

41625676, Jul 31, 1979

Filed:

Dec 20, 1977

Appl. No.:

5/862571

Inventors:

Robert P. Guetzlaff - Waterloo IA

Assignee:

Deere & Company - Moline IL

International Classification:

B21H 104
B21D 2216

US Classification:

29159R

Abstract:

The method disclosed herein briefly includes the steps of forming a pair of nestled cup-like pulley hubs having radially extending flanges in side-by-side relationship and (2) rotating the nestled hubs about a rotating axis while simultaneously urging a tapered projection on the inner surface of a rotatable, annular forming tool between the side-by-side flanges to spread the flanges and form a V groove with only minor relative rotary motion between the flanges and forming tool in their areas of contact. By having the working portion of the forming tool formed on the inner portion of a rotatable, annular tool, relative rotary movement between the flanges and tool and hence galling of the flanges is kept at a minimum. The tool disclosed herein is an annular groove forming tool having the working portion thereof formed on the inner surface of the tool, the tool including the means for mounting on the same on a spinning lathe so that the tool can be used while the pulley is rotated on the lathe spindle.