Outer blade cutting wheel and making method
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsMasaki Kasashima, Takehisa Minowa, Takaharu Yamaguchi, Koji Sato
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Abstract
In an outer blade cutting wheel comprising an annular thin disc base of cemented carbide having an outer diameter of 80-200 mm, an inner diameter of 30-80 mm, and a thickness of 0.1-1.0 mm, and a blade section disposed on an outer periphery of the base, the blade section comprises diamond grains and/or CBN grains bound with a metal bond having a Young's modulus of 0.7-4.0×1011 Pa and has a thickness which is greater than the thickness of the base by at least 0.01 mm. The outer blade cutting wheel is capable of cutting a workpiece at a high accuracy and a reduced allowance, improves machining yields, and reduces machining costs.
Claims5
A method for preparing an outer blade cutting wheel comprising
- providing a base in the form of an annular thin disc of cemented carbide having an outer diameter of 80 to 200 mm defining an outer periphery, an inner diameter of 30 to 80 mm, and a thickness of 0.1 to 1.0 mm, and
- brazing abrasive grains with a metal bond onto the outer periphery of said base to form a layer in which the abrasive grains are bound with the metal bond, the abrasive grains comprising diamond grains, CBN grains or a mixture of diamond grains and CBN grains, the metal bond having a Young's modulus of 0.7×1011 to 4.0×1011 Pa, said layer having a thickness which is greater than the thickness of said base by at least 0.01 mm and serving as a blade section, wherein said metal bond comprises an alloy comprising Ni, and at least one metal selected from the group consisting of Fe, Co, Cu and Sn, an alloy comprising Ni and phosphorus, or Ni—Mn alloy.
Dependencies are inferred from the claim text.