发明名称 Drill bit
摘要 A drill bit comprises a body having a shank portion and an end face at its forward end. The drill bit body has at the forward end a cutting means having at least one cutting edge provided on the end face. The cutting edge is spaced from the axis of rotation of the body. The body has a rake surface which terminates in the cutting edge and extends along the axis of rotation.
申请公布号 US4565471(A) 申请公布日期 1986.01.21
申请号 US19820428717 申请日期 1982.09.30
申请人 MITSUBISHI KINZOKU KABUSHIKI KAISHA 发明人 NEGISHI, HIDEO;GOTO, KAORU;TAKAYA, SUEJI
分类号 B23B51/02;B23B51/04;(IPC1-7):B23B51/00 主分类号 B23B51/02
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