Threading attachment for turning machines

Details Threading attachment for turning machines Threading attachment for turning machines

1976-06-08

1977-06-28

Combs, E. M.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having inversely angled cutting edge

10 89F, 10135R, 10141H, 408142, B23G 100, B23G 300

Patent

active

040315843

ABSTRACT:
An improved threading attachment for turning machines incorporates a carrier for holding a tool such as a tap, a stationary supporting arbor and a sliding spindle extending between the arbor and carrier in coaxial relationship with the tap. The spindle shifts axially relative to the carrier and arbor and automatically disengages the carrier from the arbor to terminate a thread cutting operation when the tap has advanced through a hole by a predetermined amount or has bottomed in a blind hole.

REFERENCES:
patent: 770966 (1904-09-01), Hunter
patent: 2340477 (1944-02-01), Kruse
patent: 2378659 (1945-06-01), Ross
patent: 3011185 (1961-12-01), Khachigian
patent: 3179965 (1965-04-01), Khachigian
patent: 3717892 (1973-02-01), Johnson
patent: 3821826 (1974-07-01), Khachigian
patent: 3829230 (1974-08-01), Johnson
patent: 3831214 (1974-08-01), Alfredeen

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