Measurement of the macro geometry of large-scale rotary workpieces type "ring"

The measurement of geometric parameters (diameters and deviations of the shape and position) of large-sized details such as "ring" with the intended purpose is explored. The measurement system is built on the basis of a vertical turning machine, universal measuring instruments of linear displacement, specialized measuring instruments and the special software and allows to measure the respective parameters directly on the production machine. The developed measuring procedures are based on the determination of the deviation of the form and the position from the results of the radial and axial runout, with or without exclusion of the errant runout. In the first case, these results are brought to the virtual datum (axis) by introducing the appropriate corrections.