齿轮传动是应用最为广泛的一种传动，其主要特点为效率高、结构紧凑、工作可靠、寿命长和传动比稳定等优点。而传统的设计方法繁琐并不精确，将优化设计应用到齿轮传动设计上有效地解决了上述问题-　　Gear transmission is most widely used a transmission, its main characteristics for high efficiency and compact structure, reliable working, long service life and stable transmission ratio, etc. While the traditional design method is not accurate trival, optimal design application to the gear transmission design effectively solved the above problems.