薄壁叶片侧铣变形误差补偿及刀位规划研究

Research on error compensation of flank milling deformation and tool path planning of thin-walled blade

刀位规划中的原理性误差和加工过程中的变形误差,是薄壁叶片侧铣加工时最重要的误差来源。通过变形误差建模分析,将其引入侧铣加工刀具路径优化模型,提出了一种侧铣变形误差补偿及刀位规划的新方法。该方法适用于直纹面和类直纹面薄壁叶片侧铣加工,并能生成综合误差最小的刀具路径轨迹。仿真实例表明,相对于传统的刀位规划-变形补偿策略,该方法计算出的误差更加准确有效,从而提升了侧铣加工刀位规划的效率和可靠性。

The principle error in the tool path planning and the deformation error in the machining process are the most important error sources in the flank milling of thin-walled blades.The modeling and analysis of deformation error is introduced into the flank milling of tool path optimization model,a new method of flank milling deformation error compensation and tool path planning is proposed.This method is applicable to the flank milling of thin-walled blades on both straight and quasi-straight surfaces,and can generate tool paths with the least comprehensive error.The simulation results show that the error calculated by this method is more accurate and effective than the traditional tool path plan-deformation compensation strategy,which improves the efficiency and reliability of tool path planning for flank milling.