目前,美国福特汽车公司已普遍采用人造金刚石刀具进行精加工。这种刀具的刀坯系美国通用电气公司产品,由碳化钨基体与人造聚晶金刚石在高温、高压下烧结而成。用这种刀具取代传统的硬质合金刀具,能有效地保证零件的粗糙度和尺寸公差,刀具的生产效率较高、工作寿命较长。这样,不但可以显著改善产品性能,而且简化了辅助工序。事实证明,人造金刚石刀具在缩短加工周期、减少加工成本、改进产品质量、提高经济效益方面,均起到了明显的作用。采用人造金刚石刀具精加工汽车的铝质发动机及变速箱零件时,即便加工耐磨性能好的硅铝材质,也可保证刃部锋利。被加工零件的表面粗糙度及尺寸精度可以严格地控制在很小的范围内。加工零件 Currently, the United States Ford Motor Company has generally used artificial diamond tools for finishing. The knife blanks of this type of tool are made by General Electric Company of the United States, made of tungsten carbide substrate and artificial polycrystalline diamond sintered at high temperature and pressure. With this tool to replace the traditional carbide cutting tools, can effectively ensure the parts of the roughness and size tolerances, high productivity tool, longer working life. This not only significantly improves product performance but also simplifies ancillary processes. Facts have proved that artificial diamond cutting tools in shortening the processing cycle, reduce processing costs, improve product quality, improve economic efficiency, have played a significant role. The use of synthetic diamond tools to finish the car’s aluminum engine and gearbox parts, even with good wear-resistant silicon aluminum material, but also to ensure sharp blade. Surface roughness and dimensional accuracy of machined parts can be strictly controlled within a small range. Machined parts