Ceramic insert for use with clamp type cutting tool

Details Ceramic insert for use with clamp type cutting tool Ceramic insert for use with clamp type cutting tool

1998-09-09

2000-01-25

Howell, Daniel W.

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

407119, 407118, B23B 2722

Patent

active

060171723

ABSTRACT:
The ceramic insert made from a silicon nitride ceramic material and formed with a recess for fastening in the center of its rake face. The recess has a surface roughness Rmax not exceeding 4 .mu.m. The angle between a side face of the recess and a centerline perpendicular to the rake face of the insert is 50-70 degrees. The ratio of the diameter of the recess to the diameter of a circle inscribing the perimeter of the rake face is 30-85%. The recess has a flat or curved bottom. The connecting portion between the side face and the bottom of the recess forms a smoothly curved surface.

REFERENCES:
patent: 5447208 (1995-09-01), Lund et al.
patent: 5628590 (1999-06-01), Beeghly
patent: 5836723 (1998-11-01), Von Hass et al.

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