【摘要】 研究了椭圆形EHA封头参数化绘图的绘图原理和具体方法,根据公称直径自动设置图界,建立基于对象的图层、线型及其他相应绘图环境,计算绘图基点和尺寸标注的相关位置点,并实现自动绘制图形对象和尺寸对象.给出了基于AutoLisp及DCL语言的封头产品图样及放样图的参数输入界面的设计,参数化绘图的二次开发程序设计方法和关键程序段,并讨论该绘图设计方法在各种封头图样绘图的应用和扩展.更多还原

【Abstract】 Parametric drawing principle and method for formed heads are delivered.Programme design methods of parameters & dimensions entering interface and drawing are described which are based on Lisp and DCL languages,and the key programme sections are given.Of this drawing methods,the applications and extensions on other types of formed heads are discussed.更多还原