On the basis of geometric theory of globoidal indexing cam

the 3D parametric modeling of globoidal indexing cam is realized based on VB 6.0 and Pro/E. The friendly interface which can calculate the contour surface data of parametric globodial indexing cam is designed through the VB programming language.This interface can be used to calculate the value of the relevant contour surface points through basic parameters input of cam and the choosing of motion law of cam follower

and it will save the file as the format of ".ibl".After that

the file is imported into Pro/E 3.0 to generate curve and then the curves are merged into surface.At last

the normal offset and solid resection operation of theoretical contour surface are carried out

and the cam solid model after cam blank Boolean substracting operation is obtained.