一、问题的提出 机床主轴变速箱是多级变速系统,比较复杂。在变速系统的计算机辅助设计时,要对传动比进行优化。优化的目标函数一般取中心距和最小,齿轮面积和最小,齿轮重量和最小,齿轮圆周速度和最小(控制噪声),轴的转速和最小(控制空载功率)……等等,或者用几个指标组成多目 First, the question put forward Machine tool spindle transmission is a multi-speed transmission system, more complicated. The transmission ratio is optimized for computer-aided design of a variable-speed system. Optimized objective function generally take center distance and minimum, gear area and minimum, gear weight and minimum, gear circumferential speed and minimum (control noise), shaft speed and minimum (control no-load power) ...... and so on, or use a few Multiple indicators of the composition