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1. 发明公开

EP2140960A2 Drilling tool 审中-公开
标题翻译： Bohrwerkzeug
公开(公告)号：EP2140960A2
公开(公告)日：2010-01-06
申请号：EP09164305.6
申请日：2009-07-01
申请人： Tungaloy Corporation
发明人： Kitsukawa, Takahiro
IPC分类号： B23B51/06 , B23Q11/00
CPC分类号： B23B51/06 , B23B2226/275 , B23B2251/68 , B23B2270/30 , B23B2270/62 , Y10T408/453 , Y10T408/50 , Y10T408/896
摘要： There is provided a drilling tool having a substantially columnar tool body (1) to be rotated around an axial line, a cutting edge (2) located at a front end portion of the tool body, and a chip suction hole (4) which is formed inside the tool body in a direction of the axial line for sucking chips generated by the cutting edge. The chip suction hole has a main hole portion extending toward a drill base along the axial line, a narrow hole portion located at a front end of the main hole portion, the narrow hole portion having a cross section smaller than that of the main hole portion and a suction opening located at a front end of the narrow hole portion and opened in the vicinity of the cutting edge, the suction opening having a cross section larger than that of the narrow hole portion.
摘要翻译：提供了一种具有基本上圆柱状的工具主体（1）的钻具，其围绕轴线旋转，位于工具主体的前端部的切削刃（2）和位于工具主体的前端部的切屑吸入孔（4）在工具主体内沿着轴线的方向形成用于吸收由切削刃产生的切屑。芯片吸入孔具有沿着轴线朝钻头基部延伸的主孔部，位于主孔部的前端的小孔部，狭缝部的截面小于主孔部的截面以及位于所述窄孔部的前端并在所述切削刃附近开口的吸入口，所述吸入口的截面大于所述狭缝部的截面。

2. 发明公开

EP2140960A3 Drilling tool 审中-公开
标题翻译：钻井工具
公开(公告)号：EP2140960A3
公开(公告)日：2013-06-26
申请号：EP09164305.6
申请日：2009-07-01
申请人： Tungaloy Corporation
发明人： Kitsukawa, Takahiro
IPC分类号： B23B51/06 , B23Q11/00
CPC分类号： B23B51/06 , B23B2226/275 , B23B2251/68 , B23B2270/30 , B23B2270/62 , Y10T408/453 , Y10T408/50 , Y10T408/896
摘要： There is provided a drilling tool having a substantially columnar tool body (1) to be rotated around an axial line, a cutting edge (2) located at a front end portion of the tool body, and a chip suction hole (4) which is formed inside the tool body in a direction of the axial line for sucking chips generated by the cutting edge. The chip suction hole has a main hole portion extending toward a drill base along the axial line, a narrow hole portion located at a front end of the main hole portion, the narrow hole portion having a cross section smaller than that of the main hole portion and a suction opening located at a front end of the narrow hole portion and opened in the vicinity of the cutting edge, the suction opening having a cross section larger than that of the narrow hole portion.
摘要翻译：提供了一种钻具，该钻具具有围绕轴线旋转的大致柱状的工具主体（1），位于工具主体的前端部处的切削刃（2）和切屑吸入孔（4），该切屑吸入孔在工具主体内沿轴线方向形成，用于吸入由切削刃产生的切屑。切屑吸引孔具有沿着轴线朝向钻头基座延伸的主孔部，位于主孔部的前端的细孔部，该细孔部的横截面小于主孔部的横截面以及位于所述窄孔部的前端且在所述切削刃附近开口的吸入口，所述吸入口的截面大于所述窄孔部的截面。

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