Annular hole cutter

Details Annular hole cutter Annular hole cutter

1990-09-25

1993-06-15

Bishop, Steven C.

Metal tools and implements, making

Blank or process

Drill

76115, 408204, B23P 1532

Patent

active

052188884

ABSTRACT:
A tipped annular hole cutter is made by brazing all the cutting tips (30) simultaneously to the cylindrical wall (12) of the cutter body. The tips (30) have outer and inner lands (32, 34) which locate against the outer and inner surfaces (52, 54) of the cylindrical wall (12). This accurately locates the tips radially during brazing. The radially inner face (46) of the tip (30) is inclined so as to define an inner clearance face which has the necessary circumferential and radial clearances without therebeing any need to grind the inner face (46) after brazing.

REFERENCES:
patent: 1290042 (1919-01-01), Arnold
patent: 1887373 (1932-11-01), Emmons et al.
patent: 2840348 (1958-06-01), Tilden
patent: 2902259 (1959-09-01), Tilden
patent: 3154839 (1964-11-01), Kleber, Jr. et al.
patent: 3176732 (1965-04-01), Henderson
patent: 3331455 (1967-07-01), Anderson, Jr. et al.
patent: 3430526 (1969-03-01), Valenziano
patent: 3610768 (1971-10-01), Cochran
patent: 4072437 (1978-02-01), Smith et al.
patent: 4208154 (1980-06-01), Gundy
patent: 4767245 (1988-08-01), Shoji et al.
"Tool-Tipping Procedure", The Welding Engineer, Jul., 1943, p. 61.

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