长期以来，国内各院校机械设计课程设计普遍选择齿轮变速箱作为设计对象，因为齿轮变速器设计涵盖了许多典型的机械设计问题，可使学生较全面地应用机械设计课程中所学的知识。但是，随着机械学科的发展和相关学科的出现及其对设计人员不断提出的新要求，这种模式诸多问题逐渐 For a long time, the design of mechanical design courses in various institutions in our country generally chose gearboxes as design objects. Because gearbox design covers many typical mechanical design problems, students can make full use of the knowledge gained in mechanical design courses. However, with the development of the discipline of mechanics and the advent of related disciplines and the new requirements that its designers constantly put forward, many problems of this mode gradually