Study On AutoCAD Development Technology About Standard Component Two-demensional Drawings Library

In today's world,with the development of manufacturing,the designer who apply AutoCAD 2D assembly drawing to design structure or illustrates structure always need to draw the basic mechanical components' detail picture,like bolts and nuts ect..Normally they need to access to reference books to choose the suitable standard size.Then they use AutoCAD's drawing commands to finish the drawing.This approach has extremely obvious shortcomings.It will not only waste a lot of designers' time,but also easily occur mistakes.it will reduce the efficiency of designers and delay the deadline.In order to save energy for designers in the trivial works,the topic takes the AutoCAD as subject invertigated,bulid a basic standard components library by using the Lisp language further development and the structuring thought of software development,designing the menu and data interface,writing the drawing programs.Then the users can draw the 2D drawings of basic standard componens quickly and conveniently in physical construction design assembly by inputing the appropriate parameters.The building of the components library can improve the intelligent degree of the commonly used drawing tools.It is beneficial for users in different aspects.