通过几何建模，建立常用机构标准零件的面片模型，为机构模型的建立提供了必要的构件单元。
To supply the part elements for simulation, build the facet model of standard part in common use through geometry modelling.
优化计算结果显示，技术性能较原常用机构有明显提高，所获几何参数对工程设计有一定参考价值。
The optimization calculation shows that the technical property of this mechanism is distinctly improved. The resulted geometric parameters are useful as reference value for some engineering designs.
不同的机器往往由有限的几种常用机构组成，如内燃机、压缩机和冲床等的主体机构都是曲柄滑块机构。
Different machines are usually composed of several limited common structures, for example, the main structures of gas engine, compressor and punch etc are crank-slider structures.
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