Method and means for operating a drill for eliminating axial scr

Details Method and means for operating a drill for eliminating axial scr Method and means for operating a drill for eliminating axial scr

1981-04-30

1984-04-03

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

Processes

Bit detachable

173 19, 173 32, 408 9, 408 10, 408130, B23B 4504, B23B 4514

Patent

active

044405294

ABSTRACT:
A drill employed for drilling holes in airframes is provided with means to rotate the drill bit during retraction and means to control the rate of retraction of the drill bit from the hole in a manner to prevent the formation of axial scratches in the wall of the hole.

REFERENCES:
patent: Re23822 (1954-05-01), Eschenburg et al.
patent: 2488992 (1949-11-01), Taylor
patent: 2604759 (1952-07-01), Smith
patent: 2873630 (1959-02-01), Eschenburg et al.
patent: 2909949 (1959-10-01), Winslow
patent: 3526158 (1970-09-01), Adams et al.
A. B. Quackenbush Co., Manual for Drill Series 15QDA-RA-SU.

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