Thread rolling method

Details Thread rolling method Thread rolling method

1985-08-05

1987-01-06

Crane, Daniel C.

Metal deforming

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

During rotation of work

B21H 306

Patent

active

046336966

ABSTRACT:
A forced rotational drive force is imparted to a workpiece in synchronism with the movement of a pair of thread rolling dies, the thread rolling dies having a lead angle selected to match the forced rolling diameter of the workpiece, for thereby forming screw threads on the workpiece. These thread rolling dies are moved toward each other to form screw threads on a workpiece. By adjusting the distance between the thread rolling dies to match the workpiece diameter before threading, there can be produced various screws having equal pitches and different nominal diameters.

REFERENCES:
patent: 408530 (1889-08-01), Rogers
patent: 1399525 (1921-12-01), Schaad
patent: 2932996 (1960-04-01), Yamamoto
patent: 3196654 (1965-07-01), Gordon
patent: 3214951 (1965-11-01), McCardell
patent: 4519231 (1985-05-01), Roth

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