Drill having two or more cutting edges comprising exchangeable c

Details Drill having two or more cutting edges comprising exchangeable c Drill having two or more cutting edges comprising exchangeable c

1987-03-30

1988-09-06

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

Tool or tool with support

With work-engaging structure detachable from cutting edge

407 48, 408227, 408231, 408713, B23B 5102

Patent

active

047689013

ABSTRACT:
A drill having two or more cutting edges is provided with interchangeable cutting members. The cutting members are fastened by screws in corresponding recesses formed in the drill bit. The cutting members are embodied by interchangeable plates and provided with fastening portions behind the main cutting edge, in the direction of cutting. The screws engage through these fastening portions in threaded bores formed in the front face of the drill bit.

REFERENCES:
patent: 1314690 (1919-09-01), Nagle
patent: 2407501 (1946-09-01), Kraus
patent: 2852969 (1958-09-01), Piha et al.
patent: 2865572 (1958-12-01), Lannert
patent: 4231691 (1980-11-01), Pape et al.
patent: 4367991 (1983-01-01), Grafe et al.
patent: 4461602 (1984-07-01), Zettl
patent: 4566828 (1986-01-01), Reinauer

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