我厂生产的调速电机的轴为多阶台多键槽的阶台轴,以往键槽的加工均以轴的圆柱面母线作为定位基准,利用双短V形块装夹在铣床的工作台上铣削,精度很难达到图样要求。为此设计了如图所示的夹具,利用轴的两个中心孔为定位基准,保证了加工中基准的统一,减少了定位误差。 夹具体7安装在铣床的工作台上,工件置于两棘 I plant production of motor shaft speed for the multi-stage Taiwan keyway multi-key shaft, the key to the processing of the shaft are cylindrical cylindrical bus as a benchmark for the use of two short V-shaped clamping in the milling table milling , The accuracy is difficult to achieve the design requirements. Designed for this purpose as shown in the fixture, the use of two axial center hole for the positioning of the benchmark to ensure that the processing of the unity of the benchmark to reduce the positioning error. Clamp body 7 is mounted on the milling table, the workpiece is placed on both spines