Rotary helical milling cutter with replaceable cutter bit elemen

Details Rotary helical milling cutter with replaceable cutter bit elemen Rotary helical milling cutter with replaceable cutter bit elemen

1979-03-07

1980-08-26

Hinson, Harrison L.

Cutters, for shaping

Rotary cutting tool

Having peripherally spaced teeth

407 45, B26D 112

Patent

active

042192927

ABSTRACT:
To permit resharpening of cutter blades of a helical milling cutter, the cutter blades or bits of a multi-bit cutter have decreasing thickness, and are placed in grooves having the same helix radius, but the centers of the helical axes offset from the center of rotation of the cylindrical cutter body in the direction towards the associated groove, so that cutter blades of lesser thickness are still seated firmly in the bottom of the respective groove. Upon dulling of the cutters, the thinnest one of the cutter blades is discarded, the thickest one only replaced and the worn blades moved up one step along the circumference of the body into grooves which are progressively more shallow, to compensate for decrease in thickness of the respective cutter bits upon regrinding to resharpen the bits.

REFERENCES:
patent: 2207909 (1940-07-01), Besaw
patent: 3175276 (1965-03-01), Weber et al.
patent: 3672017 (1972-06-01), Nielson et al.
patent: 3715788 (1973-02-01), Ayer

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