The invention relates to a high-speed large-
torque motor rotor structure and process of a
thermoelectric conversion system. The structure comprises an end cover shaft sleeve, an end cover shaft, a stop element, a sheath shaft, a
magnetic core and a sheath shaft sleeve. On the basis of determining the size parameters of the end cover shaft sleeve, the end cover shaft, the stop element, the sheath shaft, the
magnetic core and the sheath shaft sleeve, the
processing of the motor rotor
assembly assembling part is completed. Firstly, the end cover shaft, the
magnetic core and the sheath shaft are assembled, secondly, the stop element, the end cover shaft and the sheath shaft are assembled, thirdly, the end cover shaft sleeve, the end cover shaft and the stop element are assembled, thirdly, thesheath shaft sleeve, the sheath shaft and the stop element are assembled, and finally, the motor rotor is integrally machined. The motor rotor has the characteristics of simple structure, good manufacturability, high rigidity, large transmission torque and the like, and the
power density and the working reliability of the motor can be effectively improved.