Method, chuck and rotary tool to be used when making a hole in a

Details Method, chuck and rotary tool to be used when making a hole in a Method, chuck and rotary tool to be used when making a hole in a

1985-10-04

1991-07-30

Phan, Hien H.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having stepped cutting edges

408225, 408230, 408241R, B23B 5110

Patent

active

050355511

ABSTRACT:
For drilling a hole and machining at least its opening end without changing tools, a through-hole is drilled using a special tool, and then the same tool is moved sideways by means of a special chuck which guides the tool during machining of the drilled hole. The chuck has a locking means which when engaged holds it in a drilling position and which when disengaged allows sideways motion of a tool mounted in the chuck. The longitudinal section of the tool used, to be located within the hole during the machining operation, is situated within a curved surface having a radius just as great as that of the drill and having its center of curvature on the line about which the tool rotates during drilling.

REFERENCES:
patent: 1471866 (1923-10-01), Simpson
patent: 3237488 (1966-03-01), Parone et al.
patent: 4312610 (1982-01-01), Burt

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