3 A method and an apparatus for measuring the 3-D position error of a NC machine tool

摘要

The present invention accurately verify the phase space of the spindle position in that, by to be able to measure the moving coordinate points of the spindles on the three-dimensional transfer three-axis machine tools according to the method of measuring three-dimensional position of the NC machine tool error and the device the purpose can.; Thus, on the first reference and the reference coordinate input method comprising: measuring the input to the origin coordinate them to control the sphere coordinates, the second criterion attached to burn Y-axis and a third reference burn X, Y axis forming a plane mounted on a table mounted to the second and third reference coordinate sphere and the initial setting step, and a spindle on which the fixing holder mounted for inputting the distance between the ball control of the fixing holder operating on the three-dimensional space, the first, second and third ballbar and the chamber measuring step of measuring respective distances from the LVDT, the first, second and third ballbar obtained in the step of the measurement distance through the control unit and the distance between the first, second, and third reference coordinates of each sphere and each of the ball according to a function characterized by a three-dimensional position error measuring method which proceeds at a coordinate point display step of displaying the obtained coordinate position of the spindle the other hand, the three-axis transfer machine tools, center of the upper is fixed to the spindle With the insertion axis is formed and the lower portion of claim 1, 2, 3 and the fixed holder in the ball is mounted, it is attached to the upper surface of the table equipped with the first, second and third reference ball, the upper first, second and third reference sphere, the on both sides, is attached to the lower socket, characterized in the first, second and third ball adapted to be mounted directly between the first, second and third ball and the first, second and third reference view.