Press

A press forming machine, comprising:

• a lower support stand,
• an upper support plate held by a plurality of columns supported by the lower support stand,
• a slide plate which can reciprocate between the lower support stand and the upper support plate and has a molding space between the slide plate and the lower support stand,
• a plurality of driving sources, and
• control means for controlling driving of each of the driving sources,
• the driving sources having drive shafts engaged to an upper surface of the slide plate to make a displacement on the slide plate,
• characterized in that the control means comprises:
• a memory which stores control data for each of the driving sources in each of a plurality of operating steps during a molding operation, the control data providing a displacement of each of the driving sources and including a correction amount corresponding to a change in load on each of the driving sources, and
• means which supplies control data stored in the memory for each of the driving sources and separately drives the driving sources.