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    • 10. 发明申请
    • PLASTIC STABILIZED COMPOSITE CAMSHAFT
    • 塑料稳定复合材料CAMSHAFT
    • WO1990012226A1
    • 1990-10-18
    • PCT/US1990001683
    • 1990-03-29
    • HUSTED, Royce, H.
    • F16H53/00
    • F01L1/047B29C37/0082B29C45/00B29C45/14491B29C70/84B29L2031/7484B29L2031/75F16H53/02F16H53/025Y10T74/2101Y10T403/472Y10T403/7035
    • A plastic stabilized composite camshaft and method. In one version, a hollow polished tube (75) is positioned within appropriately aligned and fixtured annular cam elements (73) having interior protrusions (79) that increase in size toward the tube axis and a flowable, hardenable material is injected through the tube (75) to fill the voids between the tube (75) and the cam elements (73) for securing the cam elements (73) to the tube (75). The protrusions (79) enhance the grip of the plastic with shrinkage. The surfaces of the tube (75) and of the cam elements (73) are preground to finish dimensions. In another version, the annular cam elements are originally circular and formed into their final configuration in the mold by appropriately configured side acting shuttles. In a preferred embodiment for automotive applications, the shaft and cam elements have nesting configurations that form a continuous space therebetween such that the hardened material compressionally resists torsional forces between the shaft and cam elements. A method of injection molding without substantially stressing the freely supported shaft is also disclosed.
    • 一种塑料稳定复合凸轮轴及方法。 在一个版本中,空心抛光管(75)被定位在适当对齐并固定的环形凸轮元件(73)内,该凸轮元件具有朝向管轴线增加尺寸的内部突起(79),并且可流动的可硬化材料通过管 75)以填充管(75)和凸轮元件(73)之间的空隙,用于将凸轮元件(73)固定到管(75)。 突起(79)通过收缩增强塑料的抓握力。 管(75)和凸轮元件(73)的表面被预处理以完成尺寸。 在另一种形式中,环形凸轮元件原来是圆形的并且通过适当配置的副作用梭形成其在模具中的最终构型。 在用于汽车应用的优选实施例中,轴和凸轮元件具有在其间形成连续空间的嵌套构造,使得硬化材料压缩地抵抗轴和凸轮元件之间的扭转力。 还公开了一种注射成型而基本上不受自由支承的轴的应力的方法。