Patent ID: 7367210

Claim:
A punch press comprising punching means for punching a plate material, a plate material feeding mechanism which feeds the plate material to a punch position in the punching means, an upper tool support on which a plurality of upper tools are installed, a lower tool support on which a plurality of lower tools corresponding to the upper tools are installed, tool indexing means for indexing the upper and lower tools on the upper and lower tool supports to the punch position in the punching means, and machining control means for controlling the punching means, plate material feeding mechanism, and tool indexing means, the punch press being characterized in that at least one of the upper tools and at least one of the lower tools are a punch tool and a die tool used to form a hole in the plate material, at least one other upper tool and at least one other lower tool are an upper and lower tools for a deburring device, the upper and lower tools each having a ball holding member and a ball rotatably supported by the ball holding member and projecting from a surface of the ball holding member toward an opposite surface of the opposite ball holding member, the machining control means using the tool indexing means to index the punch tool and die tool, using the punching means to form a slot in the plate material which extends across a plane, while using the plate material feeding means to move the plate material, then using the tool indexing means to index the deburring device, and using the plate material feeding means to move the plate material sandwiched between the upper and lower balls using the punching means, to continuously remove burrs produced along a cut portion formed by the punch tool and die tool.