仿真转台用摆动式电液伺服马达关键密封及零件分析-key seal and parts analysis of swing electro-hydraulic servo motor for simulation turntable.docx

AbstractAbstractAt present, the domestic research basically focuses on two aspects: the table body assembling, Optimization of components, and research on control strategy. There are a lot of literatures at home and abroad for the Simulator’s control strategy, therefore it is necessary to resesrch the hardware in order to improve the performance of the equipment. Swing electro-hydraulic servo motor is the core component of the high precision simulator, whose performance affects the whole machine performance directly. Previous engineering practice has proved that the motor seal in the motor is not only the most critical and difficult but also the most weak part.First of all, this paper discusses the key component swing servo motor simply, and proposes that the seal is the key factor impacting the performances of the swing servo motor; the packing form combination seal is the most widely applied sealing technology used in the swing servo motor, and then the main research direction of the topic is determined.This paper states the related seal of swing servo motor and the principles of selecting seal material. After comparing the advantages and disadvantages of all kinds of seal, the best seal type is selected. Calculating the stress and strain of the main parts of the motor at the highest system pressure, and the results show that it fully meet the requirements of the strength, and the defomation is negligibly small, so it can be considered as a completely rigid interface. The paper establishes the mathematical model of O-ring, and calculates its maximum contact stress and contact length. The mathematical model of dynamic seal and the vane seal is built in ADINA, and the sealing performance is analyzed in different compression ratio and system pressure.Above all, the best working condition for each key seal fricition is determined by the orthogonal test, and the swing motor internal leakage measurement test rig is successfully modified, which has measured the dynamic a