| 摘要 |
<p>A controller for a crank shaft mirror for automatically and quickly correcting working accuracy for the thermal displacement of a machine main body in which a temperature measuring device is provided for detecting the temperature of a portion near a bearing for an internal milling cutter, whereby temperature correction data for correcting basic working data are calculated based on a temperature detected by said temperature measuring device. In this case correction data relating to the diameter of a circular path drawn by the center of the internal milling cutter is calculated by calculating a ratio relative to the basic working data, while correction data relating to the position of the center of the circular path is calculated by calculating a deviation relative to the basic working data.</p> |
