High-precision flexible quantitative polishing machine and polishing method

The invention discloses a high-precision flexible quantitative polishing machine. A motor assembly is arranged at the top of a middle-layer plate, a driving shaft assembly and a driven shaft assembly are arranged at the bottom of the middle-layer plate, the motor assembly drives the driving shaft assembly, the driven shaft assembly and a polishing belt to rotate through a transmission assembly, and a speed measuring device is arranged on the transmission assembly; and a pressure measuring device is arranged on the polishing belt, a control unit controls the polishing depth according to the obtained instantaneous polishing pressure and speed during polishing, meanwhile, the polishing machine is controlled to start and stop according to the polishing depth, through real-time calculation of the polishing depth, automatic movement of the polishing machine is achieved, the manual repeated measuring process is avoided, the polishing precision is improved, and the polishing efficiency is improved. 本发明公开的一种高精度柔性定量抛光机