Pressing machine

A press forming machine comprising:

• a lower support stand;
• an upper support plate held by a plurality of support pillars supported at the lower support stand;
• a slide plate capable of reciprocating between the lower support stand and the upper support plate and having a forming space between the lower support stand and the slide plate;
• driving sources each having a drive shaft for displacing the slide plate by engaging with the slide plate, and held by the upper support plate;
• and
• displacement measuring devices for measuring displacement of the slide plate;
• wherein the lower support stand supports a reference plate that is a displacement reference for the slide plate;
• the drive shaft has a through hole axially extending in a shaft center thereof;
• and
• the displacement measuring devices each measures, with respect to the reference plate, displacement of a portion of the slide plate, the portion corresponding to the through hole provided in the drive shaft.