Tooth forming tool with toothless clamping section for splining

Details Tooth forming tool with toothless clamping section for splining Tooth forming tool with toothless clamping section for splining

1985-01-30

1986-09-09

Crane, Daniel C.

Metal deforming

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

During rotation of work

B21D 1704, B21H 500

Patent

active

046101543

ABSTRACT:
A tool and machine are provided for pressure forming teeth in the periphery of a cylindrical, tubular workpiece such as a power transmission member by rolling. The tool has a working surface which improves the flow characteristics of the metal work piece during the tooth forming operation. Flow characteristics are particularly improved during initial contact of the tool with the workpiece by providing an initial toothless clamping section on the tool preceding the first toothed working section. The clamping section minimizes or eliminates radial workpiece separation from the mandrel ahead of the toothed section during the initial stage of the tooth-forming operation, which separation is manifested as a wave or buckling effect in the workpiece during initial forming and as an out-of-round condition in the final product.

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patent: 4383428 (1983-05-01), Jungesjo
patent: 4399678 (1983-08-01), Killop

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