从机床主传动系统结构扩大方式和顺序的理论出发,对主传动系统结构式计算公式重新进行了研究。结果表明:只要对现有的传动系统结构式稍加变化,就可以得到其结构式计算公式的通式,利用这个新公式,既可以求得机床主传动系统的转速级数,又可以与结构网直观对应。与传统公式比较,使用方便,在形式和内容上都具有实际意义,从而为机床主传动系统的设计提供了可靠的理论计算式。 Starting from the theory of expanding the structure and order of the main drive system of the machine tool, the structural formula of the main drive system is re-studied. The results show that, as long as the structure of the existing transmission system is slightly changed, the general formula of its structural formula can be obtained. With this new formula, the rotational speed series of the main transmission system of the machine tool can be obtained and the structure network can be visualized correspond. Compared with the traditional formula, it is easy to use and has practical significance both in form and content, thus providing a reliable theoretical formula for the design of the main drive system of the machine tool.