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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。
In order to improve the machining precision of general lathe, the influence of the main and minor declination angles on the surface quality of the workpiece is discussed through mathematical model analysis and experimental research. A three-degree-of-freedom turning Processing methods and control principles; and use Simulink modeling and simulation of CNC lathe rotary turret precision control method. The results of relevant examples show that the three degrees of freedom precision turning and control based on the rotary turret can make the surface precision of the complex rotary surface higher, with less error and more stability. The dynamic performance of the adaptive complex curved surface is better than the ordinary Turning.