工程制图新国标新规定代换分析及讨论(Ⅰ)

The replacement analysis and discussion of new national standard of engineering drawing

就工程制图新国标中的投影体制和机械工程CAD制图规则等几个问题,分析讨论了新旧标准的主要区别及贯彻实施时的注意事项。从“国家标准”的作用和定义阐述了工程制图国家标准在现代设计、制造及管理中的重要基础作用。同时,分析讨论了新国标实施“双采”方针(即采用国际标准和采用国外先进标准)的目的和意义。基本目的在于宣传贯彻我国工程制图新国标及新规定。

We analyzed and discussed the main differences between the new ＆ the old national standard of engineering drawing and pay attention to several issues of projection system and mechanical drawing CAD . From the function and definition of the “national standard” the important foundation fuction of the national standard of mechanical drawing in the modern design, manufacturing and management is described. At the same time ,we analyzed and discussed the purpose and meaning of the new national standard in terms of “double adopting” （i. e. adopting the international standard and adopting the foreign advanced standard） in practice. “Double adopting” is one of the important economy policys in China. The basic purpose of this articale is to propagandize and to carry out the new standard and the new provision of the national engineering cartography.