METHOD FOR DETERMINING A MACHINE POSITION ERROR, METHOD FOR IMPROVING A MACHINE PRECISION, AND DEVICE FOR DETERMINING A MACHINE POSITION ERROR

摘要

method for determining a positioning error of a machine, method for improving the accuracy of a machine, and device for determining a positioning error for a machine. The present invention provides a method for determining a positioning error of a CNC machine, wherein the CNC machine is equipped with a calibration element, the calibration element being in a first position, the method comprising the reading steps of the first sensor data from at least one sensor while the calibration element is in the first position, the cnc machine operating to perform a calibration movement that ideally leaves the calibration element in the first position, wherein the sensor data corresponds to a distance between a point on the surface of the calibration element and at least one sensor, or where a contact element of at least one sensor is offset by the calibration element and the sensor data corresponds to a distance by which the calibration element contact is deflected by reading the second sensor data from at least one sensor, the calibration element is in the second position, where the second position is o indicates the current position of the calibration element after the calibration movement has been performed, causing the movement of at least one sensor, so that the difference between the first and second sensor data decreases until the difference becomes smaller or equal. at a predetermined threshold value, and determining a tool head positioning error based on the movement of at least one sensor.