Cutting by use of rotating axially moving tool – Tool or tool with support – Having stepped cutting edges
Patent
1989-09-26
1990-05-22
Briggs, William
Cutting by use of rotating axially moving tool
Tool or tool with support
Having stepped cutting edges
407 42, 407 54, 408227, 408713, B23B 5100, B23C 502
Patent
active
049273035
ABSTRACT:
In a ball end mill, a rotational locus is described by cutting edges of respective throw-away tips mounted to a tool body. The cutting edge of one of the tips and the cutting edge of the adjacent tip overlap with each other, and the center of the overlapping portion is located at a position that is substantially 45.degree. from a forward end of the cutting edge along a 1/4 arc of the rotational locus therefrom. The overlapping length is 1/4 to 1/3 of a diameter of the rotational locus in an arcuate length thereof. A planar section is formed at a side surface of at least one of the tips, which is located at a forward end of the tool body. The side surface is located adjacent a forward end of the cutting edge. A planar surface is formed at at least one of the tip pockets formed in the tool body, at a position facing toward the planar section. The planar surface is subject to a radial cutting force acting from the throw-away tip having the planar section. The planar section is abutted against the planar surface.
REFERENCES:
patent: 4252480 (1981-02-01), Mizuno et al.
patent: 4525110 (1985-06-01), Stojanovski
patent: 4527930 (1985-07-01), Harroun
patent: 4564321 (1986-01-01), Kondo et al.
patent: 4808045 (1989-02-01), Tsujimura et al.
patent: 4834591 (1989-05-01), Tsujimura et al.
patent: 4844669 (1989-07-01), Tsujimura et al.
Nakayama Masaaki
Okawa Masayuki
Tsujimura Osamu
Briggs William
Mitsubishi Metal Corporation
LandOfFree
Ball end mill does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ball end mill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ball end mill will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2130478