面向XYZ-3RPS混联机床的后置处理算法

Post-processing algorithm oriented to XYZ-3RPS serial-parallel machine tool

摘要:

针对现有的后置处理系统无法直接生成混联机床数控指令的问题， 以XYZ - 3RPS 混联机床为模型， 研究适合该加工装置的后置处理算法。 对混联机床的结构以及后置处理过程进行分析，提出后置处理的关键算法： 包括工件坐标系下刀位数据的双直线插补算法，机床坐标系下刀位数据的逆解算法以及混联装置的干涉检查算法，对不满足条件的刀位点进行相应的处理，实现将刀位数据文件转化为混联机床的驱动文件。 叶片和球面加工实例验证了算法正确性和有效性。

Abstract:

Aiming at eliminating the disadvantage in current post-processing system which cannot generate the CNC instruction for serial-parallel machine tool, post-processing algorithm, fit for this sort of processing device, was discussed based on XYZ-3RPS serial-parallel machine tool model. By the analysis of structure and post-processing process of the serial-parallel machine tool, the key algorithm of post-processing which includes interpolation algorithm for cutter bit data under Cartesian coordinates, the inverse solution under coordinate of machine tool and the interference checking algorithm were proposed. Meanwhile, some unqualified cutter bit positions were corrected and cutter location data files had been changed into machine tool driver files. Finally, the validity of the algorithm was verified by the processing experiments of vane and sphere.