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    • 71. 发明授权
    • Helical broach for roughing
    • 螺旋拉刀粗加工
    • US08485763B2
    • 2013-07-16
    • US12920126
    • 2009-09-10
    • Yasuhito Katsuki
    • Yasuhito Katsuki
    • B23D43/02
    • B23D43/005B23F1/08B23F21/26Y10T407/16Y10T407/1671Y10T407/1685
    • A helical broach 1 for roughing includes a cutting tooth part 30 in which n spline teeth 31 are arranged side by side in an axial direction. The spline teeth 31 each include cutting teeth 32 which are arranged at a predetermined helix angle. The cutting teeth 32 each have an acute angle portion and an obtuse angle portion on both sides thereof in a circumferential direction. The cutting teeth disposed on the first to n−1th spline teeth 31 (S1 to Sn−1) in the circumferential direction are each formed in such a way that its height on the acute angle portion side differs from that on the obtuse angle portion side. The cutting teeth (Sn) of the nth spline tooth (Sn) are each formed in such a way that its height stays constant in the circumferential direction.
    • 用于粗加工的螺旋拉刀1包括切削齿部30,其中n个花键齿31沿轴向并排布置。 花键齿31各自包括以预定的螺旋角度布置的切割齿32。 切割齿32在圆周方向上的两侧具有锐角部和钝角部。 在圆周方向上设置在第一至第n至第n花键齿31(S1至Sn-1)上的切割齿各自形成为其锐角部侧的高度与钝角部侧的高度不同 。 第n个花键齿(Sn)的切削齿(Sn)各自以其高度在圆周方向上保持恒定的方式形成。
    • 73. 发明授权
    • Two-stage broaching of engine block bearings
    • 发动机缸体轴承的两段拉削
    • US5435676A
    • 1995-07-25
    • US183359
    • 1994-01-19
    • Harvey J. YeraDonald W. Mast
    • Harvey J. YeraDonald W. Mast
    • B23D37/00B23D37/04B23D41/00B23D43/02B23D37/22
    • B23D43/02B23D37/04Y10T407/1671Y10T409/400175Y10T409/40385Y10T409/501804
    • A method and apparatus for broaching a series of axially aligned and spaced bores in which a first broach is provided for broaching in an initial operation. The first broach has circumferentially extending cutting teeth. The first broach also has arcuately spaced, longitudinally extending grooves which cross the cutting teeth and divide the cutting teeth into arcuate segments. Broach guides in the spaces between bores have ribs arranged in the same arcuately spaced relation as the grooves about an axis coinciding with the aligned axes of the bores. The first broach is advanced through the bores with the ribs slidably received in the grooves to guide the first broach and the cutting segments, broaching arcuately spaced sectors of the bores but leaving unbroached ridges therebetween. A second broach broaches the ridges left by the first broach.
    • 一种用于拉削一系列轴向对准和间隔开的孔的方法和装置,其中在初始操作中提供第一拉刀用于拉削。 第一个拉刀具有沿周向延伸的切割齿。 第一个拉刀还具有弓形间隔的纵向延伸的凹槽,其横切切割齿并将切割齿分成弧形段。 在孔之间的空间中的拉杆导向件具有排列成与围绕与钻孔对齐的轴线重合的轴线的凹槽相同的弓形间隔关系的肋。 第一个拉刀通过孔被推进,其中肋可滑动地容纳在凹槽中以引导第一拉刀和切割部分,拉出孔的弧形间隔开的部分,但在其间留下未经过的脊。 第二个拉刀拉开第一个拉刀剩下的脊。