Papers by Author: Gui Cheng Wang

Abstract: On the basis of modal analysis theory, a free modal test and a work modal test of the HSK tool holder and thin-disk cutters with the vibration measuring method were carried out. The modal parameters such as inherent frequency, damping ratio and modal shapes were gained. These modal parameters were compared with modal parameters, which were gained with the finite element method. The results verified whether the construction of the finite element modal was reasonable or not, and provided technical help for exploring the dynamic characteristics and structural optimization of HSK tool system, making the full use of HSK tool holder in high- speed machining.

Abstract: Based on the System Engineering theory, the main factors that lead to the vibration in high-speed cutting were presented, which were the structure of the high-speed machine tool, the component of the tool system, the characters of the workpiece material, the choosing of the cutting parameters and the machining environment conditions. The forming mechanism of the vibration in high-speed machining was discussed, according to the characters of controlling each part of the high-speed machining system. The main controlling strategy and improving paths of the active vibration control in high-speed machining were brought forward.

Abstract: Unbalance vibration is introduced. The reasons of HSK shank unbalance and the features of vibration signal are analyzed. The method of signal essing is described. Finally, transformation and reconstruction of the vibration signal are studied by wavelet theory. HSK shank’s vibration is more accurately extracted. This way can be a good basis for scientific research and the development of the HSK integrated measurement system.

Abstract: The principle of the HSK shrink toolholder is expanding with heat and contracting with cold. The heat performance of HSK is analyzed. Firstly, the induction heating performance is studied by using electromagnetism-thermal-structure FEA in ANSYS software and experiment, the optimal temperature of HSK shrink toolholder is got. Secondly, thermal fatigue and calculation of the fatigue life is analyzed by using thermal-stress in ANSYS software and Coffin-Manson formula. The loads applied on the FEA model are temperature during the cycle of heating and cooling.