For improving the design reliability and efficiency of the stubble roller, visualized dynamic gap angle was obtained though drawing blade moving track according to movement equation using UG- NX3.

• 摘要 为提高灭茬刀辊设计的可靠性和效率，基于UG-NX3软件，根据运动方程绘制刀刃运动轨迹，形象直观的获取动态隙角。