对汽车覆盖件模具数控加工的质量分析表明，曲面造型和刀具运动轨迹的生成，是数控编程加工中的两大关键性技术。
From the quality analysis of NC machining of pressing dies of the motor vehicle covering parts, it shows that styling of the curved surface and cutter paths creating are two critical techniques.
在传统的二维设计模式下，零件不是以实体模型进行设计的，因此无法在计算机中对机器进行虚拟装配和运动仿真。
In the traditional 2d design mode, parts are not designed as solid models, therefore the virtual assembly and motion simulation for machinery products are impossible.
介绍了复极矢量法的基本原理，并通过对曲柄滑块机构和直动滚子从动件平面回转凸轮机构的运动分析，介绍了复极矢量法在机构运动分析中的应用。
This article develops a software to simulate and analyze the movement of planar linkage with single degree of freedom by using the method of complex vector.
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