Coated type metal workpiece surface strengthening grinding processing method and device

The invention discloses a coated type metal workpiece surface strengthening grinding processing method and device. The processing method comprises the following steps that (1), a to-be-processed workpiece is clamped on an electromagnetic centerless clamp, and a high-speed nozzle and a coating head are aligned to the processing surface of the workpiece; (2), a rotary driving mechanism is started, so that the electromagnetic centerless clamp drives the to-be-processed workpiece to rotate; (3), a mixing and coating device is started, grinding powder and a grinding liquid are mixed, and a mixed grinding material is coated on the surface of the workpiece through the coating head, and the grinding liquid adheres the grinding powder to the surface of the workpiece; and (4), a high-pressure spraying device is started, steel balls are sprayed to the surface of the workpiece at high speed, the steel ball with the high-speed directly impacts the grinding powder, the surface of the workpiece is subjected to strong impact