论文部分内容阅读
我厂生产的分马力电机机座的材料有两种:71、63采用压铸铝机座,80、JY 采用铸铁机座。机座壁厚只有5毫米,属于薄壁零件,因此,加工后机座内孔的变型,长期以来一直不稳定。我厂对于机座的内孔及止口是采用2级精度,虽然,图纸上对椭园度误差已放宽为:铸铝机座为公差带的300%,铸铁机座为公差带150%,但加工后,有些零件能达到要求,有些零件不能达到图纸上规定的要求。我们认为:机座加工后,内孔的变形主要是机床的刚度和装夹方式不当引起的,我们结合技术改造更新了机座加工机床。
I plant the production of horsepower motor base material has two kinds: 71,63 using die-casting aluminum base, 80, JY cast iron base. The wall thickness of the base is only 5 mm, which is a thin-walled part. Therefore, the hole in the base after machining has been unstable for a long time. I plant for the hole and the base is the use of two-stage precision, although the drawings on the ellipticality error has been relaxed as: cast aluminum housing for the tolerance zone of 300%, cast iron stand for the tolerance zone of 150% However, some parts can meet the requirements after processing, and some parts can not meet the requirements specified on the drawings. We think: After the machine base is processed, the deformation of the inner hole is mainly caused by the rigidity of the machine tool and the improper clamping way. We have updated the machine base machining machine with the technical transformation.