一种实用的机械 CAD 工具系统

通过建立机械ＣＡＤ常用符号库（ＳＹＭＬＩＢ），并以ｄＳＡＳＥ构造符合国家标准的公差数据库，在ＡｕｔｏＣＡＤ环境下方便快捷地实现机械图的初始状态、尺寸公差、形位公差、表面粗糙度、各类特性参数表格等常用符号或图形的自动绘制与标注。

A common symbol library (SYMLIB) is built up under AutoCAD software support and tolerance data base which accords with the China standard is built up by dBASE software. So the initial state,dimensional or locational tolerance. surface roughness and many particular graph and characters symbols on mechanical drawing can be drawn or dimensioned automatically.