犁体参数化设计系统的研究  

Research on Parametric Design System of Plow

作　　者：余贵珍[1] 吴成武[2] 丁能根[1] 王建[1] 

机构地区：[1]北京航空航天大学汽车工程系,北京市100083 [2]吉林大学机械科学与工程学院教授,长春市130025

出　　处：《农业机械学报》2008年第3期49-51,36,共4页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：为提高犁体设计效率,引入参数化设计和专家知识库的技术,以犁体曲面十二参数法数学模型和犁体曲面的构成线方程为基础,推导样板曲线方程和犁托的样板曲线方程,通过知识库来表达参数化设计过程中的非数值化专家经验和设计常识。编写了犁体参数化设计系统,实例表明,该系统只需输入耕宽、耕深和耕速3个参数,可自动生成各种型号犁体及零部件的二维工程图和三维造型图,设计时间由几个月缩短为20min左右。To improve plow design efficiency, the parametric design and knowledge base technology, were applied. Based on the plow twelve-parameter mathematical model and plow surface composition curve equation, the plow curve equation and the plow care equation were derivated. The knowledgebase was introduced into the plow parametric design to express the expert experiments and design experiments, which were necessary to the plow parametric design. A case of plow parametric design system showed that the developed software system only needs three parameters： farming width, depth and speed, the 2D and 3D engineering drawings of the plow can be created automatically, and design period is shorted from several months to about twenty minutes.

关 键 词：犁体曲面 参数化设计 计算机辅助设计 

分 类 号：S222.121[农业科学—农业机械化工程]