Secondary development of conjugated cam based on SolidWorks

DU Huan-fei， YUAN Yan-hong
（Engineering Research Center of Modern Textile Machinery Technology， Ministry of Education，
 Zhejiang Sci-Tech University， Hangzhou 310018，China）

Abstract： Conjugated cam is a common mechanism used in textile machinery，and cam contour line changes as the requirements change. Aiming at the low professional modeling degree and low efficiency of 3D software SolidWorks，the necessity of secondary development was pointed out and conjugate cam parametric modeling program was developed using the VBA. The function meaning and usage of API function were introduced briefly and the correctness of program was verified by the cam example. Conjugated cam was completed when the reasonable parameters and motion principle were input and debugged，then 3D model of mechanism assembly was built，the cam was simulated using the Motion at last. The results of simulation example indicate that the motion curves of main and vice pendulum rods meet the theoretical design principle basically，which judges the design of the contour line meet the requirements，and also provides reference for other complex professional part parametric design at the same time.
Key words： conjugated cam；SolidWorks；VBA；secondary development；Motion