Apparatus for punching out a part from a workpiece

A punching apparatus for punching out a portion of a workpiece comprising a punching table, a punching plate located above said punching table, a punching pattern for punching out a portion of the workpiece, means for driving said punching plate from a rest position toward a work position when said punch plate is in a first position whereby said punch pattern punches out a portion of the workpiece and means for rotating said punching plate around a pivot axis for rotation between said first position and a second position wherein said workpiece can be located on said punching table and biasing means for returning said punch plate from said work position to said rest position wherein said biasing means presses a detent against the underside of the punching plate and said detent runs into locking trays when said punching plate is in the first position and the second position.