摘要
开合式球形四轴遥控无人飞行器的机身曲面弧度较大,采用磨床加工容易产生轮廓误差,因此对机身曲面加工进刀轨迹进行优化控制,以改进加工工艺,降低飞行器的空气阻力。提出了一种基于半开式旋转稳态误差控制的机身曲面加工进刀控制方法。构建了四轴遥控无人飞行器机身曲面加工的系统结构模型以及曲面加工磨床进刀的约束参量模型,利用半开式旋转稳态误差控制拟合曲面的三角网格,通过多轴联动进刀,在五轴坐标系建模单元中实现进刀轨迹优化控制,以提高飞行器机身曲面的加工精度。实验结果表明,采用该方法进行开合式球形四轴遥控无人飞行器的机身加工控制,误差较小,改进了加工工艺,展示了较好的应用价值。
The fuselage surface curvature of opening and closing type spherical four axis remote unmanned aircraft is very big,the machining process is easy to produce the contour error. Aiming at the control optimization of the fuselage surface machining feed trajectory and improving the processing technology,it proposes an improved feed control method based on semi open steady- state rotation error control,constructs the system structure model of four axis remote unmanned aircraft fuselage surface processing. It applies the semi open steady- state rotation error control method to fit the triangular mesh of surface,takes the multi axis feed,obtains the feed trajectory optimization control in five axis coordinate system construction model unit,improves machining accuracy of aircraft fuselage surface. The simulation results show that the method can be applied in the unmanned aircraft fuselage processing effectively,reduce the processing error,and show a good application value in practice.
出处
《机械设计与制造工程》
2016年第2期80-84,共5页
Machine Design and Manufacturing Engineering
关键词
飞行器
磨床
加工
机械
控制
aircraft
grinding machine
processing
mechanical
control
