计算机科学 ›› 2022, Vol. 49 ›› Issue (7): 187-195.doi: 10.11896/jsjkx.210500135
何晓, 周佳立, 吴超
HE Xiao, ZHOU Jia-li, WU Chao
摘要： 针对铣削机器人路径轨迹绝对拟合精度低及空间路径拟合会产生刀路误差的问题,提出了一种无须精密仪器即可获得有效标定的方法。研究重点在于提高铣削加工精度。首先,通过重新计算和修正机器人路径轨迹控制点的方式,解决了路径拟合带来的切削误差问题,为接下来的切削测量精度提供了进一步的保障;然后,针对铣削主轴使工具末端位置产生的偏移,在机器人标定模型中加入了自重及外加负载模型,并且特别引入了包含角度数据的约束方程和目标函数,增加了标定数据的全面性并提高了标定效率;最后,利用此方法对KUKA60机器人进行参数标定实验,实验显示,经过标定后的铣削机器人的加工精度得到了显著的提高,铣削方块边长和夹角精度分别从0.520 mm和30分降为0.240 mm和16分,提高了53.8％和46.7％。
中图分类号:
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