通用机械和重型机械直齿锥齿轮 模数和径节

[中文适用范围]： 指定并定义模数和径节。 ISO 678本质上旨在促进切削刀具系列的建立，并且不能阻止使用非标准化模数或径节，例如使用与表中给出的下一个较小尺寸相对应的模数或径节的刀具。 [外文原描述]： Specifies and defines modules and diametral pitches. ISO 678 is intended essentially to facilitate the establishment of series of cutting tools, and cannot prevent the use of unstandardized modules or diametral pitches, for instance by using the tool for the module or diametral pitch corresponding to the next smaller size given in the table.