Rope type polishing method for long and narrow inner hole surface of part

The invention discloses a rope type polishing method for the surface of a long and narrow inner hole of a part. The rope type polishing method comprises the following steps that S1, a to-be-polished part is obtained; s2, the size of a to-be-polished face/hole and other information of a to-be-polished piece are obtained, a polishing rope is manufactured, parameters of a polishing machine are set, and polishing liquid is selected; s3, a polishing rope is installed, a polishing piece is fixed, and a polishing control program is written; s4, the polishing machine conducts polishing according to the control program; and S5, whether polishing achieves the due effect or not is checked, if yes, the process is finished, and if not, polishing is conducted again. According to the rope type polishing method for the surface of the long and narrow inner hole of the part, the polishing rope wound with the polishing material penetrates through the long and narrow inner hole, the inner wall of the workpiece is ground and poli