All pair法を用いた少数回の実験によるCNC旋盤の熱変形予測式の決定

抄録

The thermal deformation of machine tools often reduces their accuracy. Therefore, we have been trying to compensate for the thermal deformation by predicting their variations and adjusting the position of the tool according to predicted values. The prediction equation of the thermal deformation in the CNC lathe is determined by measuring the temperature variations at a few specific points of the machine. In order to obtain such coefficients with a few experiments, the previous study has used an orthogonal array to determine the experimental condition. However, orthogonal arrays have specific patterns, so it cannot create the flexible condition. This study attempts to use All pair method for determining the prediction equation more efficiently, which is normally used in software testing, it can make testing patterns have all combinations of all parameters in a few experiments. Although all pair method is not widely used in the mechanical experiment, its effectiveness is confirmed.