THE USE OF CNC MACHINES IN MANUFACTURING OF CAMS REQUIRES HIGH ACCURACY DESIGN. THERE ARE GRAPHICAL METHODS AND ANALYTICAL METHODS AVAILABLE FOR THE DESIGN. THIS PAPER FIRST DISCUSSES THE ANALYTICAL METHODS. TO ACHIEVE HIGH ACCURACY OF GRAPHICAL METHODS, DESIGN ON THE CAD SYSTEM IS PROPOSED. DETAILS ARE DISCUSSED ON HOW TO GENERATE A CONTINUOUS CURVE TANGENT TO A NUMBER OF ROLLER CIRCLES ON THE CAD SYSTEM. THE RESULTS OF THE METHOD ARE COMPARED WITH WHAT IS GIVEN BY AN ANALYTICAL METHOD.