Grinding apparatus for buttons on rock drill bit
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United States of America Patent
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Jul 22, 2008
Grant Date -
May 18, 2006
app pub date -
Feb 19, 2004
filing date -
Feb 19, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to grinding apparatus for grinding the hard metal inserts of rock drill bits, said grinding apparatus having a grinding machine carried on an support system that provides a feed pressure for said grinding machine during grinding, said grinding machine equipped with a grinding pin driven by motor to rotate about its longitudinal axis wherein the grinding cup is rotated at variable speeds and the support system provides a variable feed pressure.
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