| 摘要 |
PURPOSE:To improve the flatness through polishing by engaging the notch of work with the projection of carrier holding hole thereby blocking the rotation of work in said hole. CONSTITUTION:A carrier 10 gearing with an internal gear and a sun gear is spinned and revolved in the arrow direction (d) between upper and lower surface plates to polish the disc work 14 held in the holding hole 13 of carrier 10 by means of the upper and lower surface plates. Here, the projection 11 provided on the innercircumference of said hole 13 is engaged with a notch 15 made in the work 14 to block rotation of said work 14 in the holding hole 13 resulting in highly flat polishing of work 14. |
