用铝材制造的机匣体上压装了两个钢套A和B(图1),因零件尺寸较大,所以两个钢套的内孔需掉头磨削。按常规办法加工,达不到精度要求,为此,我们设计了磨削夹具(图2)。夹具设置了找正圆D及找正环7,操作者可通过找正D及D_1,使D和D_1中心连线与机床的回转中心重合,从而有效地消除了夹具、机床的系统误差,保证了加工零件的被加工部位对定位基准的偏移及其它要求。 Two steel sleeves A and B are press-fitted on the machine body made of aluminum (Figure 1). Due to the large size of the parts, the inner holes of the two steel sleeves need to be turned over. According to conventional methods of processing, reach the accuracy requirements, therefore, we designed the grinding fixture (Figure 2). Fixture set to find a circle D and ring 7, the operator can be found by D and D_1, D and D_1 center line with the center of rotation of the machine coincide, thus effectively eliminating the fixture, machine tool system error, guarantee The processing of parts to be machined parts of the positioning of the base offset and other requirements.