High-speed machining is a promising advanced manufacturing technology for increasing productivity and reducing production costs dramatically. High-speed machine tool is the precondition for realizing high-speed machining. High-speed motorized spindle technology is of great significance to the research and development of high-speed machine tool. Compared with conventional spindle, motorized spindle is equipped with a built-in motor, so that power transmission devices such as gears and belts are eliminated an...