Abstract text

A permanent electromagnetic indexing apparatus includes a chassis, a carrier pivoted to the chassis, and a plurality of magnetic sets. Each of the magnetic sets includes a first permanent magnet, a magnetic-conductive member, a second permanent magnet, and a magnetizing coil. Each of the first permanent magnets is mounted to the magnetic-conductive member. Each of the magnetic-conductive members is mounted onto the second permanent magnet. Each of the magnetizing coils surrounds the second permanent magnet. The magnetic sets are mounted to the carrier to enable the magnetic-conductive members to become a working surface for placing a workpiece thereon. When each of the magnetizing coils is electrically conducted, the polarity of each of the magnetic-conductive members can be changed and then the workpiece can be fixed to or removed from the working surface. In this way, the workability can be enhanced to enable preferably flexible and variable processing.