METHOD TO DETERMINE COORDINATES OF HIDDEN REFERENCE POINTS IN MEASUREMENT OF DEVIATIONS FROM ROUND SHAPE OF CROSS SECTIONS OF PARALLEL MIDDLE BODIES OF VESSELS OR SUBMARINES Russian patent published in 2016 - IPC G01B11/24 

FIELD: measurement equipment.

SUBSTANCE: measurements of deviations are carried out from the round shape of cross sections of parallel middle bodies of vessels or submarines, when they mark reference points on the inner surface of the body lining in the plane of each controlled cross section, and reflectors are installed on them, and inside the body they install a measurement device, such as a laser tachymeter. The reference points are scanned, coordinates of the reference points are sent to the computer, which accumulates results of measurements, then the measurement device is serially relocated relative to the coordinates of the body for further scanning of the entire massif of the reference points of the cross sections. An increased accuracy and validity of measurement of the deviation from the round shape of the body structures is provided by the coverage of the full massif of coordinates of the marking points without their omissions and by using a high-precision laser tool with a measurement error of not more than ±0.3 mm.

EFFECT: increased accuracy of measurements of roundness and reduced labour intensiveness of the measurement process.

2 cl, 1 dwg