Rotary grinding tool and its production method
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United States of America Patent
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Sep 30, 2014
Grant Date -
Oct 25, 2012
app pub date -
Dec 21, 2010
filing date -
Dec 22, 2009
priority date (Note) -
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Abstract
An inexpensive rotary grinding tool with reduced noise level of the grinding is provided. The rotary grinding tool comprises a metal disk having a grinding surface on at least a part of its surface and a holder for supporting the metal disk. The grinding surface has hard grains having a Mohs hardness in excess of 9 brazed thereon at a surface density of at least 20 grains/cm2. The holder has at its center a securing means for securing the holder on rotary shaft of a rotary drive unit. The holder and the metal disk are joined together to constitute the rotary grinding tool.
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