The grinding plate of this equipment is on the equipment, the upper part is driven by the main motor to rotate clockwise, the four polishing heads are driven by the same motor to rotate clockwise, and the polishing heads are controlled to lift and pressurize through the cylinder. Since the polishing head is placed upward on the lower workpiece, the upper and lower workpieces become more convenient and fast. It is especially suitable for rapid grinding and polishing of stainless steel, copper, aluminum alloy and other metal materials with PVA grinding wheel. It only needs to add recyclable coolant without using free abrasive, reducing environmental pollution.