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    • 4. 发明授权
    • Grinding stone
    • 磨石
    • US06533650B2
    • 2003-03-18
    • US09926704
    • 2001-12-05
    • Takuma YoshidaNobuo FukadaShigeyoshi KobayashiHirohide Fukudome
    • Takuma YoshidaNobuo FukadaShigeyoshi KobayashiHirohide Fukudome
    • B23F2103
    • B24D7/14B24D7/08
    • 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.
    • 一种具有圆形金属基底的偏移型磨石,其中心部分设置有具有用于将磨石安装在电动工具上的孔的凹部,以及包括一层金刚石晶粒或CBN晶粒并形成在一体中的磨石部分 沿着凹槽前表面的外圆周方向连续延伸,其中磨石部分上的颗粒的浓度在其外周端部的区域中被设定为高,而在 其他区域。 这种磨石在寿命上是优越的,具有非常高的研磨速度,并且立即获得高的平面磨削性。