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    • 7. 发明申请
    • HOLE CUTTER WITH CHIP EGRESS APERTURE
    • 孔切割机与芯片尾气孔
    • WO2011088271A1
    • 2011-07-21
    • PCT/US2011/021219
    • 2011-01-13
    • IRWIN INDUSTRIAL TOOL COMPANYNOVAK, Joseph, ThomasGREEN, Matthew, Christopher
    • NOVAK, Joseph, ThomasGREEN, Matthew, Christopher
    • B23B51/04
    • B23B51/0406B23B51/04B23B2260/072Y10T408/895Y10T408/8953Y10T408/896
    • A hole cutter has a substantially cylindrical blade body defining a blade body circumference, a cutting edge formed on one end of the blade body, and an axially-elongated slot formed through the substantially cylindrical blade body. The axially-elongated slot is configured to receive chips flowing from the cutting edge within the interior of the blade body and (i) into the slot, and/or (ii) through the slot, to prevent the collection of such chips within the interior of the blade body and/or at an interface between the blade body and work piece. The axially-elongated slot defines a first end adjacent to the cutting edge, a second end axially spaced further from the cutting edge, and a slot area. The hole cutter further defines a total slot area to blade body circumference ratio within the range of about 0.1 to about 0.3 depending on the size of the hole cutter.
    • 孔切割器具有限定叶片主体圆周的基本上圆柱形的刀片主体,形成在刀片主体的一端上的切削刃和通过基本上圆柱形刀片主体形成的轴向细长槽。 轴向细长的狭槽构造成接收从叶片本体内部的切割边缘流出的碎屑,并且(i)进入槽中,和/或(ii)穿过狭槽,以防止在内部收集这种碎屑 和/或在刀体与工件之间的界面处。 轴向细长的狭槽限定与切割边缘相邻的第一端,与切割边缘进一步轴向间隔的第二端和狭槽区域。 孔刀还根据孔刀的尺寸进一步限定在约0.1至约0.3的范围内的刀片体圆周比的总槽面积。