Eight edge positive chip control insert

Details Eight edge positive chip control insert Eight edge positive chip control insert

1980-06-16

1981-10-13

Hinson, Harrison L.

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

With integral chip breaker, guide or deflector

407104, B26D 100, B26D 112

Patent

active

042945666

ABSTRACT:
A cutter insert presenting eight positive cutting edges has a generally rectangular prismatic configuration to permit its securement in a tool holder having a conventional square insert-receiving pocket. The insert has a pair of opposed primary faces, and four rectangular side faces each having a pair of coplanar, flat lands in opposite corners thereof to permit positive location and clamping of the insert. Each side face also has a laterally opposed pair of positive beveled facets formed therein and intersecting the respective primary faces to define neutral cutting edges for the insert. An elongate groove extends intermediate the beveled facets of each side face parallel to the neutral cutting edges and functions as a chip breaker to provide freer cutting and better chip control. In preferred forms, a square pocketed tool holder is complementally configured to advantageously support the cutter insert in a manner to present a negative angle of attack at the work surface.

REFERENCES:
patent: 3142110 (1964-07-01), Hertel
patent: 3226797 (1966-01-01), Hertel
patent: 3490117 (1970-01-01), Hertel
patent: 4074949 (1978-02-01), Hochmuth et al.

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