微电机转子铁芯如图1,转子铁芯制造采用压铸工艺,生产实践证明,具有生产率高,质量好,适应大批量生产的要求。为了进一步提高在卧式压铸机上生产电机转子的效率,将压铸模设计为一模三腔,(如图2和图3),从而得到了很大的经济效益。由 Micro-motor rotor core shown in Figure 1, the rotor core manufacturing using die-casting process, production practice has proved that with high productivity, good quality, to meet the requirements of mass production. In order to further improve the efficiency of producing the motor rotor on a horizontal die-casting machine, the die-casting mold is designed into a mold-three cavity (as shown in FIG. 2 and FIG. 3), thereby obtaining great economic benefits. by