| 摘要 |
The present invention relates to an electromagnetic chuck comprising: a loading station of which upper side has a mounting part and of which one side has an electric connector mounted thereon; and magnetic blocks arranged in a matrix form on the mounting part to induce magnetism by electric current supplied through an electric connector or to release magnetism induced, wherein the magnetic block includes: a bobbin on which a coil for magnetization is electrically connected with the electric connector; a moving magnet which is mounted inside the bobbin and has a hollow hole formed at the center and left and right half bodies formed around the hollow hole; a magnetic induction part which is mounted at the upper part of the bobbin and has a magnetic band attached to the side thereof and a gudgeon formed at the bottom side and inserted into the hollow hole of the moving magnet; a first fixing hole formed at the gudgeon of the magnetic induction part; and a first connection member screw-coupled with the first fixing hole by passing the hollow hole of the moving magnet from the bottom surface of the loading station. The electromagnetic chuck provides a simple structure of the magnetic blocks and reduces the number of components to thereby make machining, assembly and disassembly of the magnetic blocks easy and rapid because the bobbin, the moving magnet and the magnetic induction part are fixed integrally with each other by the first connection member penetrating the bottom surface of the loading station. |
