Hemming machine

A hemming machine comprising:

• a single bending block having thereon a preliminary bending surface and a final bending surface:
• a lower block for placing thereon an outer panel with a flange, an inner panel being positioned on said outer panel;
• and
• a mechanism for moving said bending block with respect to said lower block, said mechanism moving said bending block in an arcuate way around a first axis such that a force with a relatively large horizontal component is applied to said flange of said outer panel when said preliminary bending surface of said bending block bends said flange in a preliminary bending process, said mechanism moving said bending block in another arcuate way around a second axis different from said first axis such that another force with a relatively large perpendicular component is applied to said flange of said outer panel when said final bending surface of said bending block bends said flange in a final bending process which is carried out subsequent to said preliminary bending process;
• wherein said mechanism comprises:
• mobile frames;
• first driving means for moving said mobile frames vertically with respect to said lower block between an upper position and a lower position;
• a holder which is connected to said mobile frames through link members and to which said bending block is attached;
• and
• second driving means, operable independently of said first driving means, for moving said holder upward and downward in an arcuate manner with respect to said mobile frames.