国家标准“形状和位置公差”(GB1182-1184-80)和公差与配合” (GB1800-79)在国內宣贯以来,已取得很大的成效。公差原则的概念已开始建立,并在生产实践中得到了应用。但是,由于尺寸公差与形位公差之间关系的三个公差原则(独立原则、包容原则、最大实体原则)较难理解,现用公差带图解法来形象的给予解释。 The national standard “Shape and Position Tolerance” (GB1182-1184-80) and Tolerance and Fit "(GB1800-79) have achieved great success since the publicity in China. The concept of tolerance principle has already started to be established, However, the three tolerance principles (independence principle, inclusiveness principle, maximum substantive principle) are more difficult to understand because of the relationship between dimensional tolerance and geometric tolerance.