Study of In-Situ Dynamic Balancing of Spindle- Chuck Assembly of CNC Lathe

The motorized spindle plays an important role in high-speed machining. The level and performance of CNC machine tool are decided and evaluated by a technology level of motorized spindle and its performance. Then it is necessary and significant to find efficient and convenient ways for the research of motorized spindle. The machine spindle system is one of the most important parts of a machine tool since its dynamic properties directly affect the cutting ability of the machine tool. The dimensions of the spindle shaft, location, stiffness of the bearings and bearing preload affect the vibration free operation of the spindle. Angular contact ball bearings are most commonly used in high-speed spindles due to their low-friction properties and ability to withstand external loads in both axial and radial directions