Several contact sensors arranged inside the workcell performed the workpiece measurement in specific control points, while a software procedure received and processed the point data to detect the flatness error on the surface.
The error value was used to adaptively define the number of the path reiterations.
Software and hardware solution were integrated to finally solve the on-line alignment issue.
The sensorbased measuring system was also adopted to perform the part frame alignment. As in tool machining a preliminary definition of workpiece alignment was performed through a tailored fixture, in order to execute the first machining operation for the creation of reference planes.
Then the on-line alignment procedure was performed starting from the measure of the workpieces and the identification of the surface shapes.
The same approach was proposed to define the tool frames positions.
The tool units were equipped with laser sensors for non contact measuring, so it was possible to perform the tool presetting and also measure the tool