Method and device for controlling a workpiece during its manufacturing

A device to control a workpiece clamped to a part holder in a machining system during a machining operation, the control being performed when the workpiece is in a machining system and in a same phase following the machining operation, the device comprising:

• the part holder to set and hold in position the workpiece in the machining system;
• a protected work area comprising an access to a work volume of the machining system;
• an optical contactless sensor acquires a plurality of points on a surface of the workpiece to determine a profile of the workpiece by emitting a laser beam describing a line that is reflected on a surface of the workpiece and measuring a distortion of the line;
• a poly-articulated robot located outside the work volume of the machining system and configured to hold and move the optical contactless sensor;
• a mobile cart to carry the poly-articulated robot and configured to move the poly-articulated robot from outside the protected work area to the protected work area and from the protected work area to outside the protected work area;
• a computer comprising a memory, a processor and a display, the memory comprising a three-dimensional digital model of the workpiece and the computer configured to acquire coordinates of the plurality of points acquired by the optical contactless sensor;
• and
• a position detector located in the protected work area to measure a position of the optical contactless sensor supported by the poly-articulated robot.