Hemming machine with movable die cartridges

A hemming machine comprising:

• a stationary base having a work station,
• a lifting beam,
• means for vertically movably mounting said lifting beam to said base at said work station,
• a motor assembly for moving said lifting beam between a raised position and a lowered position,
• two die cartridges, each die cartridge having hemming tooling mounted thereon,
• two nests, each nest having an upper surface adapted to support a part to be hemmed, one nest being vertically slidably mounted to one die cartridge and the other nest being vertically slidably mounted to the other die cartridge,
• a conveyor assembly for movably supporting said die cartridges to said base so that each die cartridge is movable between a first position in which the die cartridge with its associated nest is positioned in alignment with said work station and a second position in which said die cartridge with its associated nest is laterally spaced from said work station,
• means for selectively moving said die cartridges on said conveyor assembly between said first and second positions,
• a first clamp assembly which releasably secures said nest to said lifting beam when said nest is in said first position, and
• a second clamp assembly which releasably secures said die cartridge to said base when said die cartridge is in said first position.