Nicked cutting tool

Details Nicked cutting tool Nicked cutting tool

1991-10-11

1993-06-22

Howell, Daniel W.

Cutters, for shaping

Rotary cutting tool

Face or end mill

408230, B23C 510

Patent

active

052211630

ABSTRACT:
This invention relates to a nicked cutting tool suitable for cutting fiber-reinforced composite materials. It has an even number of twisted grooves and lands on the cutting part and the lands have nicks thereon. The nicks are preferably designed so as to incline to the longitudinal axis of the tool, and the nicks on two lands adjacent to each other in the circumferential direction incline in opposite directions to the longitudinal axis of the tool. It is possible to design the nicks so as to incline with regard to the tangent of the helix line of the twisted grooves, and in this case, the nicks on two lands adjacent to each other in the circumferential direction incline in opposite directions with regard to the helix line. In the rotation of the tool, the lands having nicks inclining in opposite directions contact alternately with the workpiece, and the fibers of the workpiece are thereby cut securely, and the shavings are discharged smoothly. The heat generated when cutting can also be dispersed.

REFERENCES:
patent: 2887136 (1959-05-01), Rathgeber
patent: 2918955 (1959-12-01), Simas
patent: 4475850 (1984-10-01), Penoza et al.
patent: 4480949 (1984-11-01), Van De Bogart

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