Method for forming threads

Details Method for forming threads Method for forming threads

1974-09-30

1977-04-12

Simpson, Othell M.

76108A, 90 1164, B23C 332

Patent

active

040168018

ABSTRACT:
A method for cutting continuous non-symmetrical threads on a cylindrical workpiece by a modified process of thread whirling. Variations of the thread form are accomplished by skewing the axis of the whirling tool relative to the axis of the cylindrical workpiece and the whirling axis offset. One practical form of resulting thread is of the reverse buttress type useful for drill rod steel.

REFERENCES:
patent: 2691921 (1954-10-01), Burgsmueller
patent: 3209652 (1965-10-01), Burgsmueller

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