Grinding stone
AssigneeSankyo Diamond Industrial Co., Ltd.
InventorsTakuma Yoshida, Nobuo Fukada, Shigeyoshi Kobayashi, Hirohide Fukudome
Life of this patent
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Abstract
An offset type grindstone having a circular metal substrate provided in a central section thereof with a recess having a hole used to mount the grindstone on a power tool, and a grindstone portion including one layer of either diamond grains or CBN grains and formed in one body so as to extend continuously in the direction of an outer circumference of a front surface of the recess, in which grindstone the concentration of the grains on the grindstone portion is set high in a region of an outer circumferential end section thereof, and low in the other region thereof. This grindstone is superior in lifetime with a very high grinding speed and a high flat grindability attained at once.
Claims20
An offset type grindstone comprising:
- a circular metal substrate provided in a central section of the grindstone with a recess having a hole used to mount the grindstone on a power tool;
- and
- a grindstone portion including a layer including at least one of diamond grains and cBN grains, the grindstone portion being molded on the substrate;
- wherein a concentration of the grains on the grindstone portion is higher in a region of an outer circumferential end section of the grindstone portion, and lower in another region of the grindstone portion than in the outer circumferential end section.
An offset type grindstone comprising:
- a circular metal substrate provided in a central section of the grindstone with a recess having a hole used to mount the grindstone on a power tool;
- and
- a grindstone portion including a layer including at least one of diamond grains and cBN grains, the grindstone portion being formed with the substrate in one body;
- wherein a concentration of the grains on the grindstone portion is higher in a region of an outer circumferential end section of the grindstone portion and a region of an inner circumferential section of the grindstone portion, and lower in another region of the grindstone portion than in the outer circumferential end section.
Dependencies are inferred from the claim text.