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    • 2. 发明申请
    • METHOD FOR MANUFACTURING PRECISION GEARS AND A MASKING TOOL USEFUL IN PRACTICING THE METHOD
    • 用于制造精密齿轮的方法和用于实施该方法的掩蔽工具
    • WO98050596A1
    • 1998-11-12
    • PCT/US1998/007824
    • 1998-04-14
    • C23C8/04B05B15/04
    • C23C8/04
    • A method and apparatus for manufacturing precision gears (10) including an initial step of providing a shaped workpiece (30S) defining a plurality of gear teeth (12) and, furthermore, defining a tooth space surface (68) defined by and between adjacent gear teeth (12). Next, a masking tool (60) is assembled in combination with the shaped workpiece (30S), which masking tool (60) includes a flexible back-plate (64) and plurality of compliant masking segments (62) bonded to and integrated by the flexible back-plate. Each of the compliant masking segments (62) defines a surface geometry (66) which is substantially complementary to the tooth space surface (68), and adjacent compliant masking segments (62) define an open-ended channel (70) therebetween. As assembled, the compliant masking segments (62) are forcibly urged into superposed engagement with the tooth space surfaces (68). In a subsequent step, a layer of masking material (28) is deposited on exposed surfaces of the shaped workpiece (30S) by an immersion process wherein the open-ended channels (70) of the masking tool (60) facilitate deposition of the masking material (28) on the top lands (14) of the gear teeth (12). The masking tool (60) is then removed from the material-masked workpiece (30MM) in preparation for a subsequent hardening step. Final steps of the method include hardening of the material-masked workpiece (30MM), and stripping of the masking material (28) from the hardened workpiece (30H).
    • 一种用于制造精密齿轮(10)的方法和装置,包括初始步骤,该初始步骤提供限定多个齿轮齿(12)的成形工件(30S),此外,限定由相邻齿轮之间和相邻齿轮 牙齿(12)。 接下来,与成形工件(30S)组合掩蔽工具(60),该掩模工具(60)包括柔性背板(64)和多个柔性屏蔽段(62) 柔性背板。 每个柔性掩蔽段(62)限定与齿空间表面(68)基本上互补的表面几何形状(66),并且相邻的顺序掩蔽段(62)在其间限定开口通道(70)。 组装时,柔性屏蔽段(62)被强制地推压成与齿空间表面(68)重叠接合。 在随后的步骤中,掩模材料层(28)通过浸渍工艺沉积在成形工件(30S)的暴露表面上,其中掩模工具(60)的开口通道(70)有助于掩蔽掩模 在齿轮齿(12)的顶部平台(14)上的材料(28)。 然后从材料掩蔽的工件(30MM)中移除掩模工具(60),以准备随后的硬化步骤。 该方法的最后步骤包括硬化材料掩蔽的工件(30MM),以及从硬化的工件(30H)剥离掩模材料(28)。