A spade drill insert and drilling tool assembly is provided wherein the spade drill insert body comprises curved cutting edges and a lip groove having a trough substantially parallel to a plane formed through each adjacent curved cutting edge, which provides a significant improvement in chip formation during cutting operations.
申请公布号
WO2005046914(A2)
申请公布日期
2005.05.26
申请号
WO2004US37056
申请日期
2004.11.04
申请人
ALLIED MACHINE & ENGINEERING CORP.;MAST, WENDELL, E.;NUZZI, JOSEPH, P.