中文摘要：

针对提高普通车床加工精度的需求,通过数学模型分析和实验研究探讨了普通车削加工中刀具主、副偏角对被加工件表面质量的影响;提出了一种基于回转刀架的三自由度车削加工方法及其控制原理;并使用Simulink建模和仿真了数控车床回转刀架精密控制方法。相关实例结果表明,基于回转刀架的三自由度精密车削及控制,能使复杂回转面表面精度更高、误差更小、稳定性更强,自适应复杂曲面的动态变化,整体性能优于普通车削加工。

英文摘要：

In order to satisfy the increasing requirement of machining accuracy with numerical control lathes,the influences on surface quality of components,coming from cutting edge angle and minor cutting edge angle between tools and work-pieces,were studied by mathematical and experimental models.Then a novel numerical control turning approach with three degrees of freedom（DOF）,which was realized by applying a rotary tool holder,was proposed and the relative controlling mechanism was demonstrated gradually.The corresponding modeling and simulation environment for this rotary tool holder based on 3 DOF numerical control cutting principle and control theory was verified by using software Simulink.Simulation results and analysis indicated that for machining complex surface of revolution,the proposed approach can achieve higher precision,less error,better stability with especially more self-adaptable to the varying geometry of machined parts,compared with general turning machining.