Segmental type grinding wheel
AssigneeNoritake Co., Limited
InventorsTakeshi Nonogawa, Tomoharu Kondo
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Abstract
A grinding wheel of segmental type including an inner cylindrical core portion, and an outer grinding portion consisting of a plurality of segments which have abrasive layers formed of abrasive grains bonded together with a glass bonding agent and which are bonded to an outer circumferential surface of the core portion with a synthetic resin layer interposed therebetween, wherein a linear thermal expansion coefficient αseg (° C.) of the segments and a linear thermal expansion coefficient αcor (° C.) of the core portion satisfy a formula |(αcor−αseg)|≦6×10−6.
Claims5
A grinding wheel of segmental type including an inner cylindrical core portion, and an outer grinding portion consisting of a plurality of segments which have abrasive layers formed of abrasive grains bonded together with a glass bonding agent and which are bonded to an outer circumferential surface of said core portion with a synthetic resin layer interposed therebetween, wherein an improvement comprises:
- said plurality of segments having a linear thermal expansion coefficient αseg (/° C.) while said core portion having a linear thermal expansion coefficient αcor (/° C.), said linear thermal expansion coefficient αseg (/° C.) and said linear thermal expansion coefficient αcor (/° C.) satisfying a formula |(αcor−αseg)|≦6×10−6.
Dependencies are inferred from the claim text.