APPARATUS FOR CALIBRATING SURFACE FLATNESS OF PLATE TYPE PARTS

Disclosed is an apparatus for calibrating the surface flatness of a plate type processed material, capable of enhancing the productivity of calibrating operation by enabling the surface flatness calibrating operation on a processed material, which is performed in a follow-up process after heat treatment operation on the plate type processed material, to be realized in quantity in a single operation process by applying a uniform load. The aforesaid apparatus for calibrating the surface flatness comprises: an operation board (12) for placing a target material to be processed (42) thereon; a fixing support unit (14) arranged in parallel along the arrangement direction of the operation board; a plurality of transfer support units (16) installed to be movable along the fixing support unit; pressure applying units (18) respectively installed in the transfer support units, and applying a load in the vertical direction; and a pressure producing and supplying unit (20) for providing an operation pressure required for operation of the pressure applying units.