给定输出角范围的空间机构计算机辅助设计

THE COMPUTER AIDED DESIGN OF SPATIAL LINKAGE WITH THE GIVEN RANGE OF OUTPUT-LINK MOTION

当要求空间机构的输出构件在给定角范围内运动时，在设计此机构的过程中，用纯解析的方法是很难实现这一运动要求的。为此，本文提出了一种基于ＡｕｔｏＣＡＤ绘图软件的几何搜索方法。此方法简便直观，易于在实践中推广应用。文中以空间ＲＲＲＳＲ连杆机构为例，具体阐述了这种设计方法及其使用。

When the motion range of output-link of the spatial linkage is required,it is difficult to meet this need hy using the.pure analytic methods in the design of the linkage. For this reason,the geometry search method based upon the AutoCAD software is presented in this paper. It is simple,convenient and audio-visual.and is easy to be applied in the practice. This design method and its appication are set forth in detail in this paper by taking the example of spatial RRRSR linkage design.