Trepanning tool

Details Trepanning tool Trepanning tool

1990-01-09

1990-11-06

Schmidt, Frederick R.

Cutting by use of rotating axially moving tool

Tool of specific diverse material

407 33, 408188, B23B 1724

Patent

active

049681923

ABSTRACT:
A trepanning tool having a hollow, cylindrical body having a central axis with a drive means on one end and a means supporting cutting inserts on the other end. The cutting inserts are arranged to cut in groups of three. Each insert has at least one generally straight cutting edge, the second insert of each said group being disposed generally perpendicular to the central insert, the cutting edge of the first and third insert each being disposed at an acute angle in a vertical plane to the cutting edge of the first insert whereby the three inserts cut a concave circular groove as the tool rotates.

REFERENCES:
patent: 4767245 (1988-08-01), Shoji et al.

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