The invention discloses a precise
grinding and
polishing machine for the sealed end face of an
airplane engine. The precise
grinding and
polishing machine comprises a shell, a gearbox, a first motor, a
grinding liquid tank, a bearing plate, a liquid
discharge pipe, a bearing box, a second motor, a third motor, a rotating wheel, a grinding plate installation plate and a grinding plate, and is characterized in that a supporting beam is arranged on the shell and provided with a guide rail, a sensor, a cylinder and a controller, the bearing box is connected with the cylinder through a lifting rod, a slide block, a
spray nozzle and a stabilizer are arranged on the outer wall of the bearing box, a
cushion block and a movable block are arranged in the bearing box, the second motor is arranged on the
cushion block, and the third motor is arranged on the movable block. The grinding plate grinds a workpiece according to the track shaped like the Arabic number '8' under the effect of the second motor and the third motor, the grinding plate is prevented from making complete contact with the workpiece, the ground workpiece can be rapidly cooled, and meanwhile the grinding precision of the workpiece can be improved.