多轴激光加工机床控制参数评估和调节技术

Evaluation and Adjustment of Controlling Parameters for Multi-axis Laser Processing Machine

多轴数控系统运动轨迹是各轴协同作用的结果,而常规控制参数调节方法仅对各轴控制参数进行独立调节。针对这一问题,提出了在多轴系统中各轴两两配合进行圆轨迹输出,以圆度误差作为量化指标评估多轴配合情况的方法。在此基础上,给出了多轴机床控制参数调节的技术方案。此项技术具有精度高、操作简单、成本低的特点,被成功应用在多轴开放式激光加工数控系统中,获得了满意的效果。

For the conventional method of independently adjusting controlling parameters in multi --axis laser processing machine, it is difficult to guarantee the processing accuracy when performing large curvature trace or at high processing speed. This paper presented a new control method, which performed a circular path and calculated the roundness tolerances as the quantitative degree of adaptability between every two axles. Based on the roundness tolerances, a fully off--line parameter--adjustment technology for multi--axis system was developed, which has the characteristics of high accuracy, simple operation and low cost. This technology has been applied in open multi--axis laser processing NC system successfully.