| 摘要 |
The present invention relates to a centerless grinding method for grinding the outer diameter surface of a piston having an eccentric projection, comprising: a preparation step for preparing cylindrical auxiliary jigs having central projections; a loading step for arranging the auxiliary jigs between the ends of projections of consecutive pistons, so as to sequentially load the pistons and the auxiliary jigs into a predetermined grinding chamber; a outer diameter grinding step for carrying out centerless grinding of the outer diameter surface of the loaded pistons; and an automatic sorting step for continuously discharging and sorting the auxiliary jigs which have passed through the outer diameter surface grinding step and the pistons of which outer diameter surfaces are ground. The pistons to be processed can be appropriately supplied to the grinding chamber by arranging the cylinder shape auxiliary jigs, which have the central projections at both ends, between the ends of the projections of the consecutive pistons. In addition, the auxiliary jigs and the pistons which have been ground and discharged are separated and sorted, thereby improving working efficiency. |
