Eight edge positive chip control insert

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

B - Operations, Transporting

26

D

29/44

B26D 1/00 (2006.01) B23B 27/16 (2006.01) B26D 1/12 (2006.01)

Patent

CA 1149141

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.

379851

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