以减速器的测绘为例，将制图测绘与计算机绘图两门课程进行有机结合，详细分析了减速器各组成零件的特点， 并探讨了减速器零件在运用计算机绘图软件AU TO C AD 绘制过程中所涉及的各类操作命令。通过减速器零件图与装配图的绘制，培养了学生的计算机绘图技能，增强了学生的理论与实践相结合的应用能力。

In this paper, taking the mapping of reducer as an example, the two courses of mapping and computer graphics are com- bined organically, the characteristics of each component part of reducer are analyzed in detail, and various operation commands in- volved in the drawing process of reducer parts by using the computer graphics software AutoCAD are discussed. Through the reduc- er parts drawing and assembly drawing, the students’computer drawing skills are cultivated, and the application ability of combin- ing theory with practice is enhanced.