PURPOSE: To easily perform works of a titled punching machine and to improve its efficiency, by connecting a hydraulic cylinder having a punch on the tip of a piston rod and a placing base at the upper and lower positions by a back plate, so that each back plate is capable of executing a link motion through a guide lever and a spiral shaft.

CONSTITUTION: When a long plate body is placed on each placing base 7 through it, and each hydraulic cylinder 6 is operated simultaneously by a conventional means, a piston rod 9 protrudes, a punch 10 of its tip punches the plate body and a hole is made. As occasion calls, when a spiral shaft 5 is rotated forward and backward by a suitable method, a back plate 8 screwed into the shaft 5, accordingly, the cylinder 6 and the base 7 forming one body with the back plate 8 are guided by guide levers 3, 4, and are moved to the right or the left. In this case, by a link action, each cylinder 6 and base 7 are moved simultaneously, mutually holding equal intervals, except a cylinder 6' and a base 7' of one end. Accordingly, the holes having optional equal intervals can be punched in a row on the plate body simultaneously.