关于CAD制图标准制订的探讨

Reseaech on Establishing Drawing National Standards of CAD

工程制图标准应适应CAD技术和图形信息处理技术的发展,特别是工程图自动识别技术的发展。根据计算机绘图和工程图识别需要,提出了制订CAD制图标准应考虑的原则:使画图和看图简单方便,又有利于工程图识别:便于区分人工痕迹与污染缺损。探讨了GB/T 14665-1998《机械工程CAD制图规则》和GB/T17450—1998《技术制图图线》标准的制订。

The engineering drawing National Standard should adapt itself to the developing requirements of CAD and graph information processing techniques, especially the progress of the engineering drawing recognition techniques. According to the needs for computer graphics and engineering drawing recognition, the principles for establishing engineering drawing rules of CAD are presented. It can make the drafting and reading drawings simple and convenience, and also contribute to engineering drawing recognition. It is help to distinguish between artificial marks, and stains and gaps on engineering drawings. Revision of engineering drawing National Standards, GB/T 14665-1998 'Mechanical engineering drawing rules of CAD ' and GB/T 17450-1998 'Technical drawings -Basic conventions for lines', is discussed.