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48 条记录 (耗时 0.012 秒)

    DRILL
    35.
    发明授权
    DRILL 有权

    公开(公告)号：EP2774704B1

    公开(公告)日：2018-09-26

    申请号：EP11874910.0

    申请日：2011-11-04

    申请人： OSG Corporation

    发明人： TAKAI Kazuteru

    IPC分类号： B23B51/00

    CPC分类号： B23B51/02 ,  B23B2222/80 ,  B23B2224/24 ,  B23B2228/10 ,  B23B2251/04 ,  B23B2251/082 ,  B23B2251/085 ,  B23B2251/122 ,  B23B2251/14 ,  B23B2251/18 ,  B23B2251/40 ,  B23B2251/406 ,  Y10T408/9095

    摘要： A drill (10) in which a cutting edge (12) comprises a concave curved cutting edge portion (12b) on the inner peripheral side and a convex curved cutting edge portion (12a) on the outer peripheral side, wherein, in cross-section orthogonal to the axial center (C), a first convex curve (CL1) corresponding to the convex curved cutting edge portion (12a) and a first concave curve (CL2) corresponding to the concave curved cutting edge portion (12b) intersect each other, so that chips generated from the cutting edge (12) have a uniform, curled shape having no needle-like protrusions and accordingly a relatively short total length, and the discharging of the chips is smoother and the discharge performance is improved. Furthermore, a perpendicular relief angle (²) having an angular range of 9° to 20° is formed on a second flank (tip flank) (32) continuous from the cutting edge (12) at the tip surface (11), and a chamfer (42) having a chamfer width (CW) in the range of 0.002D to 0.02D is formed on the cutting edge (12). Therefore, wear of the flank and chipping of the cutting edge (12) are minimized, cutting resistance is reduced, and breakage of the drill (10) is minimized.

    DRILL AND METHOD FOR MANUFACTURING CUT WORKPIECES USING SAME
    38.
    发明公开
    DRILL AND METHOD FOR MANUFACTURING CUT WORKPIECES USING SAME 审中-公开
    BOHRER UND VERFAHREN ZUR HERSTELLUNG GESCHNITTENERWERKSTÜCKEDAMIT

    公开(公告)号：EP2902142A4

    公开(公告)日：2016-06-01

    申请号：EP13842583

    申请日：2013-09-18

    申请人： KYOCERA CORP

    发明人： KOGA KENICHIROU

    IPC分类号： B23B51/02

    CPC分类号： B23B51/02 ,  B23B2251/085 ,  B23B2251/14 ,  B23B2251/46 ,  Y10T408/03 ,  Y10T408/899 ,  Y10T408/905

    摘要： A drill includes a cutting section having a cylindrical shape and configured to be rotated about a rotation axis. The cutting section includes a first cutting section and a second cutting section, at a front end portion thereof, a first flute continuous with the first cutting section and extending helically around the rotation axis toward a rear end of the cutting section, and a second flute continuous with the second cutting section and extending helically around the rotation axis toward the rear end of the cutting section. The first cutting section includes a first inner cutting edge and a first outer cutting edge positioned closer to the outer peripheral surface than the first inner cutting edge and gradually inclined to the rear end of the cutting section toward the outer peripheral surface. The first inner cutting edge is positioned closer to the rear end of the cutting section than the inner end of the first outer cutting edge.

    摘要翻译： 钻头包括具有圆柱形形状并被构造为围绕旋转轴线旋转的切割部分。 所述切割部分包括第一切割部分和第二切割部分，所述第一切割部分在其前端部处具有与所述第一切割部分连续并且围绕所述旋转轴线螺旋地延伸朝向所述切割部分的后端延伸的第一凹槽，以及第二凹槽 与第二切割部分连续并且围绕旋转轴线螺旋地延伸到切割部分的后端。 第一切割部包括第一内切割刃和位于比第一内切割刃更靠近外周面的第一外切削刃，并朝向外周面向切割部的后端逐渐倾斜。 第一内切削刃定位成比第一外切削刃的内端更靠近切削部的后端。

    DRILL
    40.
    发明公开
    DRILL 有权
    Bohrer的

    公开(公告)号：EP2684630A4

    公开(公告)日：2014-08-13

    申请号：EP12751858

    申请日：2012-02-06

    申请人： BIC TOOL CO LTD

    发明人： ARAI KOICHI ,  ARAI GIICHI ,  KIMURA KATSUYO

    IPC分类号： B23B51/02 ,  B24B3/32

    CPC分类号： B23B51/02 ,  B23B2251/04 ,  B23B2251/085 ,  B23B2251/14 ,  B23B2251/18 ,  B24B3/32

    摘要： This invention relates to a drill with a tip part on which thinning is performed, comprising two cutting blades, thinning cutting blade and a thinning cutting blade, which are formed symmetrical about an axis of rotation, which enables a great reduction in cutting resistance and easy performance of a drilling operation by human power using a hand drill, a drilling machine, or the like. The cutting edge is configured from a thinned cutting edge (1) which extends in a shape including a curved line from a chisel edge to the outer peripheral side of the drill, and a main cutting edge (2) which extends from the end of the thinned cutting edge to the outer peripheral end of the drill when viewed from the tip side of the drill, and a thinned surface formed by the thinned cutting edge is formed into an approximately parabolic shape inclined in a drill axis direction when viewed from the front side of the drill, wherein a rake angle (¸ 1 ) formed by said thinning cutting blade and a rake angle (¸2) formed by said thinning cutting blade satisfy ¸1>¸2>0°, except for a part just below the chisel.

    摘要翻译： 本发明涉及一种具有尖端部分的钻头，其上进行变薄，其包括两个切割刀片，减薄切割刀片和变薄的切割刀片，其围绕旋转轴线对称地形成，这使得能够大大降低切削阻力并且容易 使用手钻，钻孔机械等进行人力钻孔作业的性能。 所述切削刃由从所述钻头的凿边缘到所述外周侧的曲线形状延伸的细长切削刃（1）构成，以及从所述切削刃的端部延伸的主切削刃（2） 从钻头的尖端侧观察钻头的外周端，将切削刃变薄为切削刃，由从前侧观察时，由切削刃形成的变薄的表面形成为沿钻头轴方向倾斜的大致抛物线形状 ，其中由所述减薄切割刀片形成的前角（¸1）和由所述减薄切割刀片形成的前角（¸2）满足¸1>¸2> 0°，除了刚好在凿子下方的部分 。