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    • 17. 发明申请
    • CUTTING TOOL
    • 切割用具
    • US20090087269A1
    • 2009-04-02
    • US12240542
    • 2008-09-29
    • Jiro MotomuraKoichi IshikawaKenichi Yamaya
    • Jiro MotomuraKoichi IshikawaKenichi Yamaya
    • B26D3/00
    • B23B27/145B23B2200/125B23B2200/245B23B2226/315Y10T407/23
    • A cutting tool for cutting a lead-free copper-based bearing alloy containing 75 to 95% by mass Copper(Cu):, 1 to 15% by mass Bismuth(Bi), and 1 to 10% by mass hard particles comprising metal phosphide, boride, or carbide. The Cutting tool includes a rake surface, a clearance surface, and a cutting edge formed on a line of intersection between the rake surface and the clearance surface. A tip end site including the cutting edge comprises a diamond tip, and the diamond tip comprises a sintered body formed by sintering diamond particles having an average particle diameter (D50) between 0.2 μm and 1.6 μm. The cross section of the cutting edge preferably has a curved surface shape with a radius of curvature between 10 μm and 50 μm.
    • 一种用于切割含有75〜95质量%的铜(Cu):1〜15质量%的铋(Bi)的无铅铜基轴承合金和1〜10质量%的包含金属磷化物的硬质粒子的切削工具 ,硼化物或碳化物。 切削工具包括前刀面,间隙表面和形成在前刀面与间隙表面之间的交线上的切削刃。 包括切削刃的尖端部位包括金刚石尖端,并且金刚石尖端包括通过烧结平均粒径(D50)在0.2μm和1.6μm之间的金刚石颗粒形​​成的烧结体。 切削刃的横截面优选地具有曲面半径在10um和50μm之间的曲面形状。