Focus on the problems , three different typical section of mechanism and components was selected to be make computer programs in the research : the joint part with prime motor , the power transmission and the operator . the programs were designed in visual program langue visual c + + . the component ? solid modelings were made using the parametrize feature moulding software pro / e 针对农业机械设计中存在的设计效率低下，设计手段落后，需要反复修改设计的问题，本研究以可视化的程序设计语言visualc + +为开发工具，以参数化的特征造型软件pro / e为造型工具，从与原动机联接部分、动力传递部分、工作部件三个不同侧面选取农业机械中典型的机构及零部件进行了计算机辅助设计，编制了参数设计的程序，并进行了实体模型的建造，大大提高了这些机构及零部件的设计效率，并为其它零部件的cad提供了参考。
While studying the flow course of granular materials and the interactions among granular materials and working parts of agricultural machinery based on the discrete element method ( dem ) , a general method was presented to establish the dem analyzing model of agricultural machine ' s working parts based on their cad model 摘要采用离散元法研究了散粒物料之间、散粒物料与农业机械工作部件之间的相互作用以及散粒物料的流动过程，提出了由农业机械工作部件计算机辅助设计模型建立其离散元法分析模型的方法。
