Cutting by use of rotating axially moving tool – Tool or tool with support – With work-engaging structure detachable from cutting edge
Patent
1997-04-02
1999-06-29
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Tool or tool with support
With work-engaging structure detachable from cutting edge
408225, 408241S, B23B 5100
Patent
active
059158930
ABSTRACT:
A multistage bit is provided with a base part having a profile of stepped conical body with its tip cut off, and with a tip drill having a blade B of the smaller diameter than the blade B which is formed on the stage 2 at the foremost end of the base part A, the latter being provided freely detachably at the tip of the base part A.
The stopper S for the above multistage bit comprises a ring shaped member having elasticity in the radial direction with its free diameter slightly smaller than the diameter of each stage of the multistage bit, a part of said ring shaped member being cut, and at least one cut end 18 thereof is bent to the center side of the ring so as to be stopped in the vertical groove 19 formed on the outer periphery of the multistage bit, and the height of the ring H is constituted to be equal to or slightly higher than the height of the stage 2.
REFERENCES:
patent: 1389390 (1921-08-01), Sparling
patent: 2276532 (1942-05-01), Welty
patent: 2576664 (1951-11-01), Berlien
patent: 2786373 (1957-03-01), Patton
patent: 2897696 (1959-08-01), Tisserant
patent: 3017643 (1962-01-01), Lehde, Jr.
patent: 3076356 (1963-02-01), Simich
patent: 3564945 (1971-02-01), Bradley
patent: 3645640 (1972-02-01), Zukas
patent: 3758222 (1973-09-01), Oakes
patent: 3838937 (1974-10-01), Hawley
patent: 4039266 (1977-08-01), O'Connell
patent: 4297059 (1981-10-01), Miyanaga
patent: 4521145 (1985-06-01), Bieler
patent: 4582458 (1986-04-01), Korb et al.
Werkstattstechnik, vol. 64, No. 9, 1974, p. 588 XP002040363 "Eugen Durr, Stuttgart".
Howell Daniel W.
Kabushiki Kaisha Miyanaga
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