Temperature error compensation method based on three-section measurement

The invention relates to measuring techniques and instruments and provides a temperature error compensation method based on three-section measurement so as to improve the measuring stability of a cylindrical coordinate measuring machine. The technical scheme of the invention comprises the following steps: 1, using a measure gauge of which the diameter is subjected to calibration and traceability to calibrate the zero position and axis direction of each measuring bench; 2, establishing a mathematical model for the temperature error compensation; 3, compiling an error compensation program basedon the mathematical model for the temperature error compensation and adding the program to a data processing program of workpiece measurement results; 4, adding sections needing to be measured for the temperature error compensation to the measuring program, and additionally measuring the sections needing to be measured for the temperature error compensation in the process of measuring the workpieces; and 5, performing data processing on the measuring results to realize the temperature error compensation. The method of the invention is mainly applied to the processing measurement of revolving members.