Indexable cutter insert

Details Indexable cutter insert Indexable cutter insert

1989-11-02

1991-05-21

Terrell, William E.

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

407 42, B23C 510, B23C 514

Patent

active

050170554

ABSTRACT:
An indexable cutter insert for a rotary cutter includes a plate having front and rear faces. The front face has at least one pair of first and second marginal ridges intersecting each other. The first marginal ridge is generally arcuately shaped when viewed in a direction perpendicular to the front face and serves as a main cutting edge. The second marginal ridge is short and straight and serves as a second cutting edge. The main cutting edge has a leading end portion intersecting the second cutting edge so as to define an obtuse angle therebetween. The front face serves as a rake surface for the main and second cutting edges and has a marginal surface portion disposed adjacent to the second cutting edge and the leading end portion of the main cutting edge. The marginal surface portion is convexly curved so as to slope toward the rear face toward the second cutting edge.

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patent: 4712949 (1987-12-01), Johnson
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