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    • 10. 发明申请
    • CUTTING TAP AND METHOD OF MAKING SAME
    • 切口及其制造方法
    • WO2010045054A3
    • 2010-07-22
    • PCT/US2009059524
    • 2009-10-05
    • KENNAMETAL INCHENDERER WILLARD EGEORGE STEPHEN MVOLOKH VLADIMIR D
    • HENDERER WILLARD EGEORGE STEPHEN MVOLOKH VLADIMIR D
    • B23G5/06B23G5/00B23P15/52
    • B23G5/06B23G2200/30B23P15/52B24B3/18B24B19/04Y10T408/904Y10T408/9046Y10T408/9048
    • A cutting tap (20, 40) includes a body (22, 42) having an axial forward end (24, 44) and an axial rearward end (26, 46) and a central longitudinal axis (Z-Z). The body has a fluted section (30, 50) at the axial forward end. The fluted section includes a chamfered fluted section (54) extending from the axial forward end of the body and terminating at a first full cutting thread (70). The chamfered fluted section includes a first cutting thread (62, 66, 68) located a first distance from the axial forward end of the body, and a second cutting thread (62, 66, 68) located a second distance from the axial forward end of the body. The second distance is greater than the first distance. The chamfered fluted section is shaped such that a thickness of a section of material removed by the second cutting thread is smaller than a thickness of a section of material removed by the first cutting thread. A method of making the cutting tap is also disclosed.
    • 切割丝锥(20,40)包括具有轴向前端(24,44)和轴向后端(26,46)和中心纵向轴线(Z-Z)的主体(22,42)。 主体在轴向前端具有凹槽部分(30,50)。 凹槽部分包括倒角凹槽部分(54),倒角凹槽部分(54)从主体的轴向前端延伸并终止于第一全切割螺纹(70)。 倒角的有槽部分包括第一切削螺纹(62,66,68)和第二切削螺纹(62,66,68),第一切削螺纹位于距本体的轴向前端第一距离处,所述第二切削螺纹位于离轴向前端第二距离处, 的身体。 第二距离大于第一距离。 倒角的凹槽部分被成形为使得由第二切割线除去的材料部分的厚度小于由第一切割线除去的材料部分的厚度。 还公开了制造切割丝锥的方法。