对ISO 21771:2007公式的探讨

Discussion on the Formula in ISO 21771: 2007

对国际标准ISO 21771:2007(渐开线圆柱齿轮与齿轮副——概念与几何学)中的计算公式进行了分析和探讨,并对DIN ISO 21771:2014、DIN 21773:2014与ISO 21771:2007中的公式进行了对比和分析,对其中部分公式中的不妥之处提出了修改建议,以期为标准修订者和使用者提供参考。

The analysis and discussion of the calculation formulas in the ISO 21771: 2007( Gears-Cylindrical involute gears and gear pairs-Concepts and geometry) are carried out,and the contrast and analysis of the formulas in DIN ISO 21771: 2014,ISO 21771: 2007 and DIN 21773: 2014 are carried out. Some suggestions are proposed for the improper parts of the formula,in order to provide reference for standard revision and users.