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公开(公告)号：US20100028098A1
公开(公告)日：2010-02-04
申请号：US12221088
申请日：2008-07-31
IPC分类号： B23B51/02
CPC分类号： B23B51/02 , B23B2222/88 , B23B2251/04 , B23B2251/14 , B23B2251/18 , Y10T408/909 , Y10T408/9097
摘要： This invention has to do with a rotary twist drill of the type having a fluted cylindrical shank with a drill bit end having at least two cutting edges extending radially outwardly from the longitudinal axis of the drill. Cutting edges are formed by the intersection of the flutes with the drill point end and extend radially outwardly from the center of the drill body to the outer perimeter of the drill body. Gashes formed on the drill point end form innermost cutting edge portions which are symmetrical with one another about a point offset both horizontally and vertically from the axial centerline of the drill body so as to allow a positive cutting action at the centerline of the material to be removed.
摘要翻译： 本发明涉及具有槽形圆柱形柄的旋转麻花钻，钻头端具有从钻头的纵向轴线径向向外延伸的至少两个切削刃。 切削刃由凹槽与钻头端部的相交而形成，并从钻头主体的中心径向向外延伸到钻具体的外周边。 在钻头端形成的气体形成最内侧的切削刃部分，它们相对于钻头主体的轴向中心线水平和垂直偏离的点彼此对称，以便允许材料中心线处的正切削动作为 删除。
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公开(公告)号：US08292555B2
公开(公告)日：2012-10-23
申请号：US12221088
申请日：2008-07-31
IPC分类号： B23B51/02
CPC分类号： B23B51/02 , B23B2222/88 , B23B2251/04 , B23B2251/14 , B23B2251/18 , Y10T408/909 , Y10T408/9097
摘要： This invention has to do with a rotary twist drill of the type having a fluted cylindrical shank with a drill bit end having at least two cutting edges extending radially outwardly from the longitudinal axis of the drill. Cutting edges are formed by the intersection of the flutes with the drill point end and extend radially outwardly from the center of the drill body to the outer perimeter of the drill body. Gashes formed on the drill point end form innermost cutting edge portions which are symmetrical with one another about a point offset both horizontally and vertically from the axial centerline of the drill body so as to allow a positive cutting action at the centerline of the material to be removed.
摘要翻译： 本发明涉及具有槽形圆柱形柄的旋转麻花钻，钻头端具有从钻头的纵向轴线径向向外延伸的至少两个切削刃。 切削刃由凹槽与钻头端部的相交而形成，并从钻头主体的中心径向向外延伸到钻具体的外周边。 在钻头端形成的气体形成最内侧的切削刃部分，它们相对于钻头主体的轴向中心线水平和垂直偏离的点彼此对称，以便允许材料中心线处的正切削动作为 删除。
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公开(公告)号：US20110085862A1
公开(公告)日：2011-04-14
申请号：US12587649
申请日：2009-10-10
CPC分类号： B23C5/10 , B23C2210/0485 , B23C2210/282 , B23C2210/40 , B23C2210/483 , Y10T407/1948 , Y10T407/245
摘要： A new chip breaking end mill is disclosed having an elongate cylindrically shaped body with opposing shank and cutter ends wherein at least one flute is spirally formed around the center axis of the cylindrically shaped body and the flute extends axially from the shank end to the cutting end. A cutting edge is formed by the intersection of the flute with the outer diameter of the cylindrically shaped body and extends longitudinally of the cylindrically shaped body. A concave, facing outwardly, chip breaker groove is formed in the flute and located adjacent to the cutting edge and the groove extends axially along with the cutting edge on the cylindrically shaped body. A chip guide channel is located adjacent to, and on the other side of the chip breaker groove than the cutting edge and it also extends axially along the length of the body. A longitudinally extending raised intersection is formed between the adjacent chip breaker and chip guide. Two radial lines, one drawn from the centerline of said cylindrically shaped body through the cutting edge and the other drawn from the centerline through a point on the raised intersection, have an acute included angle of from 2 to 20 degrees. The cutting end of the end mill has a radially extending cutting edge thereon which is substantially perpendicular to the central axis of the cylindrically shaped body.
摘要翻译： 公开了一种新的切屑端铣刀，其具有细长的圆柱形主体，其具有相对的柄部和切割器端部，其中至少一个凹槽围绕圆柱形主体的中心轴线螺旋地形成，并且凹槽从柄端轴向延伸到切割端 。 刀刃由圆柱形体的外径相交并形成为圆柱形体的纵向延伸。 在凹槽中形成凹入的面向外的切屑槽，并且位于切割边缘附近，并且凹槽与圆柱形主体上的切割边缘一起轴向延伸。 切屑引导通道位于与切削刃相邻并且在切屑槽的另一侧上，并且其还沿着主体的长度轴向延伸。 在相邻的断路器和芯片引导件之间形成纵向延伸的凸起交点。 两条径向线，一条从所述圆柱形主体的中心线穿过切割边缘而另一根从中心线穿过突出交点处的点，具有2至20度的锐角。 端铣刀的切割端在其上具有径向延伸的切割刃，其基本上垂直于圆柱形主体的中心轴线。
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