| 摘要 |
PROBLEM TO BE SOLVED: To provide a punching breakage detection method that enables punching breakage in a laser punch composite processing machine to be detected easily without comprising another sensor for detecting punching breakage and a laser punch composite processing machine. ! SOLUTION: A punching hole of a workpiece punched by cooperation of a punch and a die in a laser punch composite processing machine 1 is positioned to a laser processing position, and this punching hole position is irradiated with laser beams to detect reflected light from the workpiece, thereby detecting punching breakage. A tabular workpiece is processed by punching and processed by laser cutting. When a product is cut and separated from the workpiece to be carried out, a punching hole of a punching processing position of a product other than a product concerned is positioned to a laser processing position, and this punching hole position is irradiated with laser beams to detect reflected light from the workpiece, thereby det |
