Cutting by use of rotating axially moving tool – Tool or tool with support – Having inversely angled cutting edge
Patent
1978-10-13
1980-12-30
Britts, Ramon S.
Cutting by use of rotating axially moving tool
Tool or tool with support
Having inversely angled cutting edge
408228, F16B 2500
Patent
active
042416396
ABSTRACT:
The method includes positioning a plurality of rotary milling saw stations about a path of travel for successive screw blanks. Two longitudinally overlapping fluting cuts are made on each side of each blank to configure a drilling point. The blanks are rotated about their axis a predetermined amount, during travel between work stations, to expose the appropriate peripheral surface of the blank to the appropriate work station. The method and apparatus described in the invention is capable of producing a drill screw with relatively long flutes behind the cutting edges while not appreciably weakening the point structure. The turret carrying the blanks is intermittently indexed in timed relationship with the activation of the milling saw, the work stations and means to clamp the blanks at the work stations.
REFERENCES:
patent: 3079831 (1963-03-01), Gutshall
patent: 3125923 (1964-03-01), Hanneman
patent: 3395603 (1968-08-01), Skierski
patent: 3578762 (1971-05-01), Siebol et al.
patent: 3739682 (1973-06-01), Siebol et al.
patent: 3786713 (1974-01-01), Sygnator
patent: 4016795 (1977-04-01), Gill
patent: 4125050 (1978-11-01), Schwartzman et al.
patent: 4147088 (1979-03-01), Whittaker, Jr.
Britts Ramon S.
Buckman Thomas W.
Illinois Tool Works Inc.
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