Annular hole cutter

Details Annular hole cutter Annular hole cutter

1987-06-19

1988-08-30

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having axial, core-receiving central portion

408206, 408703, B23B 4102

Patent

active

047672455

ABSTRACT:
An annular hole cutter is disclosed which has a plurality of cutting teeth disposed about a lower end of a cylindrical annular wall, each tooth having intersecting back-off surfaces, a first back-off surface inclining inwardly and a second back-off surface inclining outwardly. Teeth with high and wide cutting edges alternate with teeth having a low and narrow cutting edge, thereby reducing stress on the teeth, dissipating heat more effectively and preventing the blockage of the hole cutter by the cut chips.

REFERENCES:
patent: 3244035 (1966-09-01), Jehle et al.
patent: 3548687 (1970-12-01), Holloway
patent: 4490080 (1984-12-01), Kezran

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