Cutting insert having a circular cutting edge with a chip former

Details Cutting insert having a circular cutting edge with a chip former Cutting insert having a circular cutting edge with a chip former

1993-01-19

1994-08-30

Terrell, William E.

Cutters, for shaping

With chip breaker, guide or deflector

Comprising concave surface in cutting face of tool

407117, B23B 2708, B23B 2722

Patent

active

053421515

ABSTRACT:
The invention relates to a metal cutting tip having an upper face and a curved relief face, defining between them a substantially circular cutting edge. A chip former is located in the upper face and comprises a plurality of substantially radially directed recesses formed in the upper face. The recesses extend from the land at the cutting edge to a substantially centrally located deflector wall. The recesses are positioned to deflect cut metal into a curved rigidized shape and against the deflector wall to cause breaking thereof.

REFERENCES:
patent: 3187406 (1965-06-01), Franko
patent: 3875663 (1975-01-01), Gustafson et al.
patent: 4273480 (1981-06-01), Shirai et al.
patent: 4626140 (1986-12-01), Zweekly et al.
patent: 4844668 (1989-07-01), Petterson
patent: 4893969 (1990-01-01), Hessman et al.
patent: 4946319 (1990-08-01), Lyon et al.
patent: 4988242 (1991-01-01), Petterson et al.
patent: 5040930 (1991-08-01), Zinner
patent: 5044840 (1991-09-01), Fouquer et al.

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