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    • 45. 发明授权
    • Cutting insert for threading
    • 切削刀片用于穿线
    • US08740516B2
    • 2014-06-03
    • US13717053
    • 2012-12-17
    • Tungaloy Corporation
    • Daisuke YoshibaEiichi Nunokawa
    • B23G5/00
    • B23G5/04B23B27/065B23B27/145B23B2200/205B23G5/02Y10T407/23Y10T407/235Y10T408/90467
    • A threading cutting insert achieves high shape accuracy of a screw to be processed, and saves on manufacturing cost. Therefore in the threading cutting insert, a plurality of tooth-shaped cutting edges are formed in a cross ridge line portion between a rake face and flanks formed in a cutting side face, wherein the plurality of mountain-shaped cutting edges provides at least one finishing cutting edge for transferring a shape of a screw, and at least one roughing cutting edge formed in a tooth shape smaller than that of the finishing cutting edge. A flank of the finishing cutting edge includes a first flank, and a second flank having a clearance angle larger than that of the first flank, wherein the finishing cutting edge, the first flank, and the second flank are sequentially provided in that order from the rake surface in a direction of a lower surface of the insert.
    • 螺纹切削刀片可实现待加工螺杆的高精度,节省制造成本。 因此,在穿线切削刀片中,多个齿形切削刃形成在形成在切削侧面的前刀面和侧面之间的十字棱线部分中,其中多个山形切削刃提供至少一个精加工 用于转印螺钉形状的切削刃,以及形成为比精加工刃部小的齿形的至少一个粗切削刃。 精加工切削刃的侧面包括第一侧面和具有大于第一侧面的间隙角的间隙角的第二侧面,其中精加工切削刃,第一侧面和第二侧面依次从 在插入件的下表面的方向上的前刀面。