Abstract: Nowadays, during the period of creating industry is that numerical control machine tool popularizes application, the average machine tool already begins to be sifted out slowly cover.
According to this one form, I have studied demand of numerical control machine tool to electric motor. By the fact that inertia analysing , I knowing numerical control machine tool, the upper electric motor is to develop from average electric motor over. And, the different kind electric motor has similar operating principle and characteristic property in the field of some. Therefore, I set about right away from the same direct current motivation , analyse its operating principle , mechanical performance after some character , develop and then to step.by.step electric motor, this is also to apply to some extent in numerical control machine tool entrance stage. Direct.current , permanent magnetism direct.current servo electric motor and permanent magnetism exchange synchronism servo electric motor having exchanged the servo electric motor , having analysed widerange speed cotrol mainly follow. Development of final , subsequently rectilinear electric motor, I have been described an once simplely in by system in numerical control machine tool moving forward.
Key words: servo motors NC machine tool motor controlling