Abstract

The computer aided engineering (CAE) with commercial software is used to analyze the free vibration frequencies, linear dynamic stress and deformation for secondary shaft system, primary shaft system and machinery bed in great five-axis turning-milling complex computer numerical control (CNC) machine. It is reasonable to use CAE software in the CNC intelligent manufacturing processes for time saving, component quantity upgrading and engineer training. It is desirable to select the maximum displacement and natural frequencies values as the basic data to design the CNC machine in safety condition for avoiding resonance. It is also valuable to design and choose the good region of rotational speed for the motors in the CNC system to provide a smoothly operation by using not in the same values of natural frequencies. The natural frequencies, linear