【毕业论文】基于autolisp深沟球轴承的二次开发论文.docVIP

PAGE PAGE 5 河南农业大学 本科生毕业论文（设计） 题 目 基于autolisp深沟球轴承的二次开发 学 院 机电工程学院 专业班级 农业机械化及其自动化08级3班 学生姓名 指导教师 撰写日期：2012年 05 月 18 日 摘 要 计算机辅助绘图技术已广泛应用于机械制造中, 该项技术是技术人员必备的技能之一。CAD技术近几年在国内的广泛推广和运用使得许多企业从繁重的设计、修改和绘图等工作中解脱出来. AutoCAD内嵌的Visual lisp编辑器允许用户对AutoCAD进行二次开发，将Lisp语言与AutoCAD有机的结合起来，可以直接调动几乎全部的AutoCAD命令，同时Lisp语言又具备一般高级语言的基本结构和功能，并且具有一般高级语言所没有的强大的图形处理功能，编程十分灵活，是当今世界上CAD软件中被广泛采用的设计语言之一。机械零件中的一些标准件、常用件，它们的外形基本相似，只是尺寸大小有所不同。利用一般的AutoCAD命令进行绘图虽然能比手工绘图快，但是由于对于这些大小不一形状相似的零件要重复进行绘制，大大降低了工作效率。利用autolisp对这些零件进行参数化程序设计绘图，可以大大提高绘图效率。本文内容是在autolisp环境中对深沟球轴承进行参数化程序设计绘图。 关键词：autolisp, 二次开发, 深沟球轴承 Abstract Computer-aided drawing technology has been widely used in machinery manufacturing, the technology is one of the necessary skills and technical personnel. CAD technology in recent years made many enterprises in the extensive promotion and use of domestic and freed from the heavy design, modify, and drawing work. AutoCAD embedded Visual lisp editor allows users to AutoCAD for secondary development,willing Lisp language organic combine with AutoCAD, which can directly to almost all of the AutoCAD commands,at the same time Lisp language and have generally high level language basic structure and function,and with a general of the high level language not powerful graphics processing functions, programming is very flexible and now which is widely used in the design in the world CAD software.The mechanical parts of the standard parts, and some common parts, their shape basic similar, only size different.Using AutoCAD commands for the general drawing though than manual drawing can be fast, but as for these size shape similar parts to repeat draw, and greatly reduce the working efficiency.Using of these parts autolisp parametric design program graphics, which can greatly improve the efficiency of the drawing. The content of this article is the deep groove ball bearings in the autolis