针对凸轮轮廓传统的设计方法，采用计算机完成了凸轮的选型设计及凸轮轮廓图纸的自动生成。在凸轮的选型设计中，提高了凸轮轮廓计算函数库的构造方法，即充分利用ＡｕｔｏＣＡＤ１２.0ＡｕｔｏＬＩＳＰ编辑语言的强大功能，完成凸轮轮廓的自动生成。该项研究改革了凸轮轮廓传统的手工设计及绘制方法，缩短了设计周期，提高了设计精度。 Aiming at the traditional design method of cam profile, the design of the cam and the automatic generation of the cam profile are completed by computer. In the design of cam selection, the construction method of the cam contour calculation function library is improved, that is to make full use of the powerful functions of the AutoCAD12.0AutoLISP editing language to complete the automatic generation of the cam profile. The research has revolutionized the traditional manual design and drawing of cam profiles, shortening the design cycle and improving the design accuracy.