Hemming machine with dual ball screw drive

A hemming machine comprising:

• a base adapted to be supported on a ground support surface,
• hemming tooling mounted to said base,
• a cradle vertically slidably mounted to said base,
• a nest mounted to said cradle, said nest adapted to support a part to be hemmed,
• a first and second ball screw rotatably mounted to said base, said ball screws being threadably connected to said cradle on opposite sides of said nest so that rotation of said ball screws vertically displaces said cradle relative to said base,
• a single drive motor drivingly connected to both said first and second ball screws which rotatably drives the shafts in synchronism with each other,
• wherein said cradle comprises a pair of paced apart beam sections, said beam sections having a connected portion at each end, said ball screws being threadably connected to said connected portions of said cradle.

A hemming machine comprising:

• a base adapted to be supported on a ground support surface,
• hemming tooling mounted to said base,
• a cradle vertically slidably mounted to said base,
• a nest mounted to said cradle, said nest adapted to support a part to be hemmed,
• a first and second ball screw rotatably mounted to said base, said ball screws being threadably connected to said cradle on opposite sides of said nest so that rotation of said ball screws vertically displaces said cradle relative to said base,
• a single drive motor drivingly connected to both said first and second ball screws which rotatably drives the shafts in synchronism with each other,
• wherein said interacting moving moans comprises at least on e pin on one of said nest and said hemming tooling and at least one socket on the other of said nest and said hemming tooling, said at least one pin engaging said at least one socket upon vertical movement of said nest relative to said hemming tooling.