| 摘要 |
The present invention has an effect of mechanically performing conveyance of a material, improving the grinding quality, reducing the installation costs, and improving the efficiency of grinding as grinding having flatness of high precision can be performed by self-weight by mounting a material on a grinding wheel regardless of experience of a worker. A ring type material is mounted on the upper side of at least one grinding wheel rotating in the same direction, and the material is connected with at least one grinding wheel. Moreover, friction is caused while the material is stopped, or rotated in the opposite direction to the grinding wheel, or in the same direction with the grinding wheel. Therefore, the material is capable of having flatness of high precision by self-weight. |
