Ultraprecise grinder with two stages of feeding mechanism and its control method

The present invention relates to ultra precise numerically controlled grinder with two stages of feeding mechanism and its control method. The grinder includes an ultra precise numerically controlled grinder; a micro feeding bench comprising a piezoelectric driver, a flexible hinge mechanism and a control system; a detection system comprising a position sensor and a size measurer; and an integrated interface system for transmitting the pulse signals to realize the integrated control of the grinder. The grinder has numerically controlling system, and increased micro feeding bench control system, monitoring system and integrated interface system. The present invention is for completing the coarse, semi-precise and precise grinding of high precision parts of optical glass, ceramic and other hard and fragile material.