Machining apparatus

A machining apparatus comprising:

• an articulated robot that has a catch instrument at an arm tip thereof, which catch instrument is for catching a workpiece, the robot taking out the workpiece after molding from molds of a plastic molding machine;
• and
• a machining unit equipped at a bracket that is located within an arm reachable zone of the articulated robot when machining the workpiece, wherein
• the machining unit has a plurality of working tools, wherein each of the working tools is rotatably supported, via a common support shaft on the bracket, for rotation of each of the working tools about a common pivot axis between a machining position of the respective working tool, where the respective working tool machines the workpiece, and an evacuated position of the respective working tool, where the respective working tool does not machine the workpiece, wherein each of the working tools is independently rotatable with respect to each other about the pivot axis between the respective machining position and the respective evacuated position, each of the working tools being pressed to a machining target portion of the workpiece caught by the catch instrument of the articulated robot according to attitude control of the articulated robot to conduct a machining on the workpiece, and the machining unit is configured so as when one of the working tools is moved from the evacuated position of the one working tool to the machining position of the one working tool, another of the working tools is evacuated from the machining position of the another working tool to the evacuated position of the another working tool, and
• the machining apparatus further comprising a profiling portion that is pressed to a profiling surface of the workpiece to control an amount of the machining on the workpiece, which profiling portion is provided to one of the working tools.