Ball nose end mills

Details Ball nose end mills Ball nose end mills

1993-09-30

1996-09-24

Rachuba, M.

Cutters, for shaping

Rotary cutting tool

Face or end mill

407119, B23C 510, B23C 514

Patent

active

055584756

ABSTRACT:
There is provided a solid ball nose tool comprising a hard material with 30-70 volume % submicron hard constituents in the form of carbides, nitrides and/or carbonitrides of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and/or W in a metallic matrix based on Fe, Co and/or Ni. The tool has a constant positive rake angle along the whole end radius of +8+2.degree. and a continuously decreasing clearance angle and towards the center where it is 10.+-.2.degree..

REFERENCES:
patent: 4145213 (1979-03-01), Oskarsson et al.
patent: 4618540 (1986-10-01), von Holst et al.
patent: 4712948 (1987-12-01), Kidani
patent: 4932815 (1990-06-01), Krauss
Patent Abstracts of Japan, vol. 4, No. 125 (M-30)(607) 3 Sep. 1980 & JP-A-55 083 517 (Mitsubishi) 24 Jun. 1980.
Patent Abstracts of Japan, vol. 9, No. 206 (M-406)(1929) 23 Aug. 1985 & JP-A-60 067 003 (Hitachi) 17 Apr. 1985.
Patent Abstracts of Japan, vol. 12, No. 182 (M-702)(3029) 27 May 1988 & JP-A-62 292 313 (Mitsubishi) 19 Dec. 1987.
Patent Abstracts of Japan, vol. 11, No. 315 (C-451)(2762) 14 Oct. 1987 & JP-A-62 099 467 (Hitachi) 8 May 1987.

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