Ceramic tube inner surface polishing device and method

The invention relates to the technical field of ceramic tube inner surface ultra-precision machining, in particular to a ceramic tube inner surface polishing device and method. The ceramic tube inner surface polishing device comprises a lathe, a magnetism gathering device, a peripheral magnetic pole, a peripheral magnetic pole support, an auxiliary magnetic pole, an L-shaped bevel gear angle rotator, a transmission shaft, an auxiliary magnetic pole support, a high-speed motor, a high-speed motor bracket and a photoelectric limit switch. The magnetism gathering device, the peripheral magnetic pole and the peripheral magnetic pole support are fixed to a sliding box a of the lathe. The high-speed motor, the transmission shaft, the L-shaped bevel gear angle rotator and the auxiliary magnetic pole are connected in sequence and are fixed to a sliding box b of the lathe. A ceramic tube generates rotational motion under the action of the lathe. The high-speed motor drives the auxiliary magnetic pole to rotate. The auxiliary magnetic pole and the peripheral magnetic pole synchronously conduct axial feeding. Magnetic grinding particles and the inner surface of the ceramic tube part move relatively, so that ultra-precision machining of the inner surface of the ceramic tube is completed. The ceramic tube inner surface polishing device is high in machining precision and can be widely applied to polishing of inner surfaces of ceramic tubes.