Contour milling cutter

Details Contour milling cutter Contour milling cutter

1989-08-07

1991-02-05

Schmidt, Frederick R.

Cutters, for shaping

Rotary cutting tool

29 78, 407 58, 407 59, B26D 0112

Patent

active

049900358

ABSTRACT:
A cutting tool for machining printed circuit boards and the like includes a cutting part having an longitudinal axis of rotation, an outer surface, and a plurality of staggered teeth formed on the outer surface. The cutting part has a first predetermined number of main cutting grooves formed in the outer surface and which extend along the cutting part at a first lead angle, as well as a second predetermined number of divider grooves intersecting the main cutting grooves. The divider grooves extend along the cutting part at a second lead angle. The main cutting grooves and the divider grooves define teeth. The first predetermined number is a prime number and the second predetermined number is greater than the first predetermined number by two, such that the teeth are staggered as viewed in a radial direction which is perpendicular to the longitudinal axis and such that each of the teeth partially overlaps in the radial direction at least another one of the teeth.

REFERENCES:
patent: 3058199 (1962-10-01), Cave et al.
patent: 3129492 (1964-04-01), Strasmann
patent: 3913196 (1975-10-01), Maday

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