Analysis Of High-speed, High-power Electric Spindle Design And Optimization Of Static And Dynamic Characteristics

Tanks and self-propelled artillery (including other armored vehicles), manufacture of machinery manufacturing areas, use of equipment and general manufacturing is not much difference, the more generic class lathe. As one of the core components of the diesel engine, the manufacturing equipment is similar to the ordinary civilian heavy-duty trucks, tractors and small marine engines, body, turret, variable speed and gear, running gear, processing and manufacturing so special, just the production of such products, parts, there are a large number of axes and the rotary part and processing of the disc hub class, often in large quantities, varieties, requirements, process complexity, and materials for high-strength alloy steel, is difficult to machine materials, turning equipment at the same time with high efficiency, high flexibility, high accuracy, high stiffness, high power and high torque and other multi-functional requirements.In this paper, manufactures high-speed, the overall structure of the high-power lathe electric spindle, motorized spindle interference fits of the amount of interference calculation, electric spindle cooling and lubricating the way, the selection of spindle bearing, spindle balancing requirements.and the finite element method analysis and study of the static and dynamic characteristics of the electric spindle, to verify the rationality of the electric spindle unit established three-dimensional finite element model:determine the structure has a good dynamic performance, verify the rationality of the design.Derived based on the theoretical basis, the Company has successfully developed a high-power electric spindle products and reliable operation in the actual trial, the performance indicators to meet the design requirements. However, due to the precision manufacturing process meet the requirements of the electric spindle products and precision assembly process level, caused by the vibration of the spindle, this article also designed and implemented based on magnetorheological damper lathe electric spindle damping semi-active control trials systems. The damper, combined with the fuzzy control theory to design a fuzzy control based on the lathe power of the MR fluid damper spindle flutter system. Simulink package of the system simulation results show that the designed control system can achieve good control of flutter in the cutting process.The main contents of this article is:1) high-speed, high-power electric spindle structure optimization design2) electric spindle motor spindles modal analysis, the natural frequency of the electric spindle vibration mode; harmonic response analysis of the electric spindle and high speed conditions, the spindle at the front of the rotor and back-end three positions occurrence of the maximum dynamic displacement analysis, investigated the change of the dynamic stiffness of the electric spindle:verify the electric spindle data reference to certain specifications, reasonable structure design, improve and optimize the dynamic characteristics of electric spindle.3) with magneto-rheological fluid damper electric spindle vibration overall system design4) electric spindle with magnetorheological damper semi-active control damping system simulation...