A forming disc exchanging method and apparatus for use in a forming apparatus for performing bending operations in multiple directions by timing and sequentially operating a plurality of bending slides. The forming apparatus includes a forming disc which includes a plurality of bending slides, a gear mechanism for actuating the bending slides, a product discharging device and a mold. A main forming machine has the forming disc removably attached thereto and includes a guide structure for allowing the disc to slide thereon. Further included is a truck which includes a drive device having the forming disc removably attached thereto for turning the gears, guides for allowing the disc to slide thereon, and a transfer device for sliding and transferring the forming disc.