Spot drill with indexable replaceable insert

Details Spot drill with indexable replaceable insert Spot drill with indexable replaceable insert

1992-08-17

1993-11-09

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having peripherally spaced cutting edges

407 40, 407 54, 407113, 408231, 408713, B23B 5100

Patent

active

052597075

ABSTRACT:
A spot drilling and centering drill including a body having a cylindrical head portion and a replaceable indexable insert mounted in the head portion. A V-angled slot is formed directly in the head portion. The insert has two V-angled cutting surfaces with a drill point, each cutting surface fitting within the V-angled slot to locate the drill points on the centerline of rotation of the drill.

REFERENCES:
patent: 2575239 (1951-11-01), Stephens
patent: 3878905 (1975-04-01), Schaumann
patent: 4047826 (1977-09-01), Bennett
patent: 4060335 (1977-11-01), Holloway et al.
patent: 4197042 (1980-04-01), Krhounek et al.
patent: 4293254 (1981-10-01), Markovics
patent: 4493596 (1985-01-01), Grunsky et al.
patent: 4505626 (1985-03-01), Benhase
patent: 4527931 (1985-07-01), Sarin
patent: 4591302 (1986-05-01), Loevdahl

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