Vitrified super-abrasive-grain grindstone
AssigneeNoritake Co., Limited
InventorsAkihiro Mizuno, Norio Imai, Kouichi Yoshimura, Takeshi Mishima
Life of this patent
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Abstract
A vitrified superabrasive grain grinding stone includes superabrasive grains including a CBN abrasive grain as a main abrasive grain and a diamond abrasive grain as an auxiliary abrasive grain bonded together by use of a vitrified bond. The auxiliary abrasive grain has an average grain diameter equal to ½ to 1/10 of that of the main abrasive grain, and the auxiliary abrasive grain has a toughness value of 0.4 to 1 when that of the main abrasive grain is given as 1.
Claims5
A vitrified superabrasive grain grinding stone with superabrasive grains comprising a CBN abrasive grain as a main abrasive grain and a diamond abrasive grain as an auxiliary abrasive grain bonded together by use of a vitrified bond,
- the auxiliary abrasive grain having an average grain diameter equal to ½ to 1/10 of that of the main abrasive grain, and
- the auxiliary abrasive grain having a toughness value of 0.4 to 1 when that of the main abrasive grain is given as 1.
Dependencies are inferred from the claim text.