在仪器制造行业中,常常需要许多铝合金的壳体类零件。这些零件的工艺性较差,而对它们的装配结合面,往往要求有较高的表面精度和光洁度。以前我们对这些壳体类零件结合面的加工,是采用精车、精铣工艺。由于铝合金零件具有强度低、变形大等特点,在切削加工后,零件内部存在大小不等的内应力,会使壳体零件产生缓慢的变形,最终影响其表面的不平度要求。零件结合面的不平度又将使装配后的产品产 In the instrument manufacturing industry, often require a lot of aluminum alloy shell parts. These parts are less workmanship, and the assembly of them with the surface, often require a higher surface accuracy and finish. In the past, we processed these shell parts with the surface, using fine car, finishing technology. As aluminum alloy parts with low strength, large deformation and other characteristics of the cutting process, there are parts within the size of the internal stress, the shell parts will have a slow deformation, the final impact on the surface roughness requirements. The unevenness of the part joining surface will make the assembled product produce again