Disclosed is a method for loading a sheet placement device of a flat bed machine tool with a material sheet, wherein the material sheet is supplied to the machining operation carried out by the flat bed machine tool, starting from a target position assigned to the machining operation in a machine coordinate system, and the flat bed machine tool comprises a camera system having at least one camera. The camera system is designed to produce captured images of the sheet placement device, which are calibrated three-dimensionally in relation to the machine coordinate system of the flat bed machine tool. The method comprises the steps: producing a captured image of the material sheet in the region of the sheet placement device; evaluating the captured image to determine an actual sheet position in the machine coordinate system; measuring a deviation of the determined actual sheet position from the target position; and using the measured deviation to align and position the material sheet.

A method for evaluating a position of a selected sub-space of a nesting plan is provided. The nesting plan is provided for controlling a cutting process of a flatbed machine tool for cutting out workpieces from a material sheet and includes an overlap-free arrangement of respective sub-spaces, the respective sub-spaces corresponding to the workpieces. The method includes providing contour data specifying a cutting contour that delimits the selected sub-space in the position to be evaluated within the planning space, and providing position data indicating respective positions in the planning space of spaces to be considered in the evaluation. The spaces include a group of supported spaces and a group of support surrounding spaces. The method includes providing cutting operation data for at least one section and determining an evaluation value for the position to be evaluated of the selected sub-space using the calculated damage rate of the cutting contour.

A method for evaluating a position of a selected sub-space of a nesting plan is provided. The nesting plan is provided for controlling a cutting process of a flatbed machine tool for cutting out workpieces from a material sheet and includes an overlap-free arrangement of respective sub-spaces, the respective sub-spaces corresponding to the workpieces. The method includes providing contour data specifying a cutting contour that delimits the selected sub-space in the position to be evaluated within the planning space, and providing position data indicating respective positions in the planning space of spaces to be considered in the evaluation. The spaces include a group of supported spaces and a group of support surrounding spaces. The method includes providing cutting operation data for at least one section and determining an evaluation value for the position to be evaluated of the selected sub-space using the calculated damage rate of the cutting contour.

A process for separating, collecting and storing pieces cut from one or more metal sheets and resulting from at least one cutting step, during which one or more pieces, variously arranged and configured, have been cut on the metal sheet. The present invention concerns also the system implementing this process.