MULTI-PIECE DRILL HEAD AND DRILL INCLUDING THE SAME
摘要
One non-limiting aspect of the present disclosure is directed to a multi-piece spade drill head for a spade drill, wherein the spade drill includes an elongate body portion and a cutting portion removably secured to an end of the body portion. The multi-piece spade drill head includes at least two insert pieces, each piece including a cutting edge. The at least two insert pieces are configured to be removably secured to the body portion of the spade drill adjacent one another and with the cutting edges of the insert pieces aligned to together form a cutting edge on an end of the spade drill.
申请公布号
WO2010093485(A1)
申请公布日期
2010.08.19
申请号
WO2010US20408
申请日期
2010.01.08
申请人
TDY INDUSTRIES, INC.;FANG, DANIEL, X.;DUFOUR, JEAN-LUC;WILLS, DAVID J.