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US 11,819,979 B2Granted
Abrasive tool
AssigneeA.L.M.T. Corp.
InventorSadateru Nakamatsu
Life of this patent
Estimating the term…
Abstract
An abrasive tool has an abrasive grain layer comprising a plurality of hard abrasive grains bonded by a binder, with a plurality of the hard abrasive grains each having a working surface formed to contact a workpiece, a ratio of a total area of a plurality of such working surfaces to an area of an imaginary plane smoothly connecting the plurality of working surfaces being 5% or more and 30% or less.
Claims9
An abrasive tool having an abrasive grain layer composed of a plurality of hard abrasive grains bonded by a binder,
- a plurality of the hard abrasive grains each having a working surface formed to contact a workpiece,
- wherein for each hard abrasive grain of the plurality of hard abrasive grains, the working surface is a planar surface, and the working surface of each hard abrasive grain of the plurality of hard abrasive grains is along an imaginary plane,
- wherein the plurality of hard abrasive grains consists of at least one selected from the group consisting of diamond and cubic boron nitride,
- wherein a ratio of a total area of a plurality of such working surfaces to an area of the imaginary plane smoothly connecting the plurality of working surfaces being 5% or more and 30% or less,
- wherein a second hard abrasive grain not having the working surface is provided on a base between the hard abrasive grains having the working surface, a height from the base to the top of the second hard abrasive grain is lower than a height from the base to the working surface, and
- wherein the binder is plating.
3 more elements
Dependencies are inferred from the claim text.