FIELD: measurement equipment.
SUBSTANCE: invention relates to devices and methods for determination of a positioning error of working elements of a CNC machine. For that purpose, the machine is provided with a calibration element and at least one sensor. After the working element of the machine performs calibration movement, sensor data is read-out, which corresponds to distance between the point on surface of the calibration element and the sensor or to the distance to which a contact element of the sensor deviates. After the next calibration movement is performed, the second sensor data is read-out when the calibration element is in the second position. Then, movement of the specified sensor is performed until difference between the first and the second data of the sensor becomes lower than the pre-determined threshold value or equal to it, and the positioning error of the machine working element is determined based on the above movement of the sensor.
EFFECT: improvement of error determination.
17 cl, 5 dwg
