Throwaway insert

Details Throwaway insert Throwaway insert

1991-11-26

1993-03-02

Schwartz, Larry I.

Cutters, for shaping

Rotary cutting tool

Including holder having seat for inserted tool

407 42, 407114, B26D 112

Patent

active

051904179

ABSTRACT:
A throwaway insert having a generally quadrilateral-shaped flat plate configuration is disclosed that includes first and second major faces disposed parallel and opposite to each other; oppositely facing first and second side faces extending between the first major face and the second major face; remaining oppositely facing third and fourth side faces extending between the first major face and the second major face; major cutting edges, one each constituted along each of the intersections of the first and second major faces with the first and second side faces minor flanks, one each constituted along the intersections of each of the first and second major faces with the third and fourth side faces, the minor flanks extending between a pair of oppositely formed intersections of the first major face with the first and second side faces, and between a pair of the oppositely formed intersections of the second major face with the first and second side faces, where the intersection constitutes the major cutting edge; and minor cutting edges respectively constituted along the intersection of one end of the minor flanks with either of the first and second side faces. The minor flanks include a transition portion so as to form a multi-stage face of concave cross section including at least two face elements.

REFERENCES:
patent: 3818562 (1974-06-01), Lacey
patent: 3955259 (1976-05-01), Gustafsson
patent: 4529339 (1985-07-01), Shimomura et al.
patent: 4597695 (1986-07-01), Johnson
patent: 4632607 (1986-12-01), Pantzar
patent: 5028175 (1991-07-01), Pawlik
patent: 5078550 (1992-01-01), Satran et al.
patent: 5082400 (1992-01-01), Shiratori et al.

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