The invention relates to a method for correcting a predetermined cutting path for cutting a metal blank from a metal strip continuously transported in a transport direction x with the following steps: Simultaneously determining a first x coordinate x1 and a first y coordinate y1 of a point on a surface of the metal strip with respect to an x and a y reference; Determining a second coordinate y2 of the point with respect to the y reference at precisely the time when the metal strip has been moved in the transport direction x by a predetermined first distance dx1 with respect to the first x coordinate x1; Determining a first y correction value K.sub.y1 by taking the difference between the first y coordinate y1 and the second y coordinate y2; and Using the first y correction value K.sub.y1 to correct the cutting path coordinates describing the predetermined cutting path.

There is described a method and system for reshaping a component for assembly that may have been deformed pre-assembly and post-fabrication. As-fabricated measurements are used to determine a baseline for the component and as-mounted measurements are used to determine a deformation parameter as a function of the baseline. The component may be reshaped using correction displacements applied to a positioning device of an assembly tool to which the component is mounted for assembly.

A control system includes a controller that controls machining of a workpiece, and a photographing device that photographs an image of the workpiece under machining operation. The controller generates a three-dimensional model of the workpiece under machining operation based on the acquired image, compares the generated three-dimensional model and a three-dimensional model generated by a machining simulation with each other, and determines a presence or absence of a machining defect based on a result of the comparison. When the machining defect is present and re-machining is possible, a setting is modified depending on a cause of the machining defect and additional machining is executed based on the modified setting.

A method for correcting deviations in a production process of an article, including: a) measuring surface coordinates of a first article, b) representing, in three dimensions, real measurement values from measuring the surface coordinates with a display apparatus that is fastenable or fastened to a user's head, c) representing, in three dimensions, a predefined model of the article using the display apparatus, d) comparing the predefined model to the point cloud or the point mesh, e) selecting at least one region from the point cloud or the point mesh which deviates from the predefined model, f) manipulating this region of the point cloud or the point mesh by means of the gesture or head movement control such that the point cloud or the point mesh in this region is matched to the predefined model, or approximated to the predefined model, or moved beyond the predefined model, g) transmitting at least one value of a deviation between the point cloud or the point mesh and the point cloud/point mesh obtained by manipulation to a production machine or a machine for shaping tool production, or transmitting the point cloud/point mesh obtained by manipulation to the production machine or to the machine for shaping tool production, h) producing a further article in the production machine or producing or post-processing of a shaping tool for producing the further article, wherein the deviation is corrected or compensated, or based on the point cloud/point mesh obtained by the manipulation.

The invention relates to a method for correcting a predetermined cutting path for cutting a metal blank from a metal strip continuously transported in a transport direction x with the following steps:

Simultaneously determining a first x coordinate x1 and a first y coordinate y1 of a point on a surface of the metal strip with respect to an x and a y reference;
Determining a second coordinate y2 of the point with respect to the y reference at precisely the time when the metal strip has been moved in the transport direction x by a predetermined first distance dx1 with respect to the first x coordinate x1;
Determining a first y correction value K.sub.y1 by taking the difference between the first y coordinate y1 and the second y coordinate y2; and
Using the first y correction value K.sub.y1 to correct the cutting path coordinates describing the predetermined cutting path.

An interference determination method for machine tools which determines whether or not there will be interference between elements that move relative to each other, the method including: a setting procedure for setting a machine tool model obtained by combining the shape model of each of the elements including a work model corresponding to the work; a measurement procedure for measuring the position of the work attached to the work attachment part; a correction procedure for acquiring, at a predetermined timing, the position of the work measured in the measurement procedure, and correcting the machine tool model set in the setting procedure; and a determination procedure for determining whether or not there will be interference between the elements on the basis of the machine tool model corrected in the correction procedure.

There is described a method and system for reshaping a component for assembly that may have been deformed pre-assembly and post-fabrication. As-fabricated measurements are used to determine a baseline for the component and as-mounted measurements are used to determine a deformation parameter as a function of the baseline. The component may be reshaped using correction displacements applied to a positioning device of an assembly tool to which the component is mounted for assembly.

A calibration method for machine tools comprises: providing a workpiece on a machine tool; rotating the workpiece around a first rotation axis parallel to a main shaft of the machine tool and processing the workpiece by a first machining mode; measuring a first dimensional error of a shape of the workpiece along directions of first and second linear axes perpendicular to the first rotation axis; calculating a positional error of the first rotation axis according to the first dimensional error; rotating the workpiece around a second rotation axis perpendicular to the main shaft and processing the workpiece by a different second machining mode; measuring a second dimensional error of the shape of the workpiece along a direction of a third linear axis perpendicular to the second rotation axis; calculating a positional error of the second rotation axis according to the second dimensional error.