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在近代通讯导航电子设备和各类精密仪表制造中,已日趋普遍地采用铝合金构件作为精密齿轮传动的支承件。作精密传动的支承件,一般有一组或几组相互平行、垂直、或空间交叉的孔系,供正齿轮副、锥齿轮副、蜗轮蜗杆副作精确传动用。孔本身精度一般为1～2级,光洁度为▽▽▽7～▽▽▽9,孔系的同心度、平行度、垂直度、不交叉度视齿轮的运动精度,有严格的要求。由于铝合金延展性好,粘性大,加工过程中会粘屑,将严重损坏孔壁光洁度和孔的精度。我们经过几年的生产实践,采用镗模-镗杆或钻模-扁钻工艺,能确保铝合金构件的几何精度并具有较高的生产率。
In the modern communications and navigation electronic equipment and various types of precision instrument manufacturing, aluminum alloy components have become increasingly popular as precision gear drive support. For precision transmission support, generally have a group or groups of parallel, vertical, or space cross hole system for the positive gear, bevel gear, worm gear for accurate transmission. The accuracy of the hole itself is generally 1 to 2, the finish is ▽ ▽ ▽ 7 ~ ▽ ▽ ▽ 9, hole system of concentricity, parallelism, verticality, non-degree of view of gear movement accuracy, there are strict requirements. As the aluminum ductility, viscosity, processing process will be sticky, will seriously damage the hole wall finish and hole accuracy. After several years of production practice, we use the boring die - boring bar or die - flat diamond technology, to ensure the geometric accuracy of aluminum alloy components with high productivity.