Milling tool

Cutters – for shaping – Rotary cutting tool – Including holder having seat for inserted tool

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Details

175377, 299 89, 407 59, E21B 1056

Patent

active

047172908

ABSTRACT:
This miling tool for underground work consists of a tool body which has a plurality of cutter blades. Each cutter blade has a negative axial rake and an essentially constant negative radial rake. In addition, each cutter arm has a close packing of cylindrical cutting grade tungsten carbide inserts set at a lead angle of about 0 to 10 degrees. The inserts are also preferably vertically offset on adjacent cutting blades.

REFERENCES:
patent: 2328494 (1943-08-01), Reaney
patent: 2709490 (1955-05-01), Trimble et al.
patent: 3114416 (1963-12-01), Kammerer
patent: 3147536 (1964-09-01), Lamphere

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