基于欧拉角度内插法的五坐标刀轴光顺设计算法研究

Scheduling Smoothing Tool Orientation for 5-axis machining Based on Euler Angles Interpolation

相对于传统的三坐标加工,五坐标加工具备很多优点。在五坐标加工中,如果刀具轴向变化过于剧烈的话,将很容易伤到零件表面,因此在满足过切和碰撞侦测的条件下,生成光顺的刀具轴向则非常重要。在五坐标自由曲面加工中,为了得到更加高效和高质量的曲面,本文提出一种新的刀具轴向设计方法。针对刀具轴向变化剧烈的特点,本文提出通过使用欧拉角度内插法进行刀具轴向设计,使得刀具轴向沿着被加工刀具路径光顺变化,从而达到了提高加工精度和效率的目的。最后,通过具体的计算机仿真实例证明了本文所提出的算法,在改进自由曲面加工中的有效性。

5-axis CNC machining offers many advantages over conventional 3-axis CNC machining. In 5-axis machining, if the tool-axis orientations vary considerably, the part surface may be deteriorated easily, hence the smoothing tool directions becomes an important issue for gouging avoidance and collision detection. To obtain high effective machining and a high accuracy surface, in this paper, a new approach is proposed to design smoothing tool orientations along cutting-path for 5-axis sculptured surface machining by using Euler Angles Interpolation method. Finally, the illustrative examples are given. Computer illustrations and example demonstrations reveal the proposed method can efficiently improve the machining efficiency of sculptured surface machining.