Cutters – for shaping – Rotary cutting tool – Including holder having seat for inserted tool
Patent
1998-05-06
2000-06-06
Tsai, Henry W. H.
Cutters, for shaping
Rotary cutting tool
Including holder having seat for inserted tool
407 48, 407 62, 407 65, 407113, B23C 520
Patent
active
060710454
ABSTRACT:
A cutting insert (20) having a geometrical configuration comprising first and second oppositely facing, parallel faces interconnected by a V-shaped bottom (26) and side (28) and top (30) walls perpendicular to the faces with the side walls (28) being parallel to one another. The cutting insert (20) has first (32) and second (34) flutes disposed on opposite sides of a center axis with the first flute (32) extending in an arc from the top wall (30) to one of the side walls (28) and the second flute (34) extending in an arc from the top wall (30) to the other of the side walls (28). The first flute (32) presents a flute surface extending in the arc and is disposed at an angle sloping downwardly from the first face (22) to the second face (24) along the entire arc thereof to define intersections with the top wall (30) and one of the side walls (28) respectively which are disposed at an angle other than 90.degree. relative to the faces. The second flute (34) similarly presents a flute surface extending in the arc and is disposed at an angle sloping downwardly from the second face (24) to the first face (22) along the entire arc thereof to define intersections with the top wall (30) and the other side wall (28) respectively which are disposed at an angle other than 90.degree. relative to the faces. Each of the flute surfaces slopes downwardly at a greater angle at the center of the arc thereof than at the ends of the arc thereof.
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