| 摘要 |
PURPOSE:To detect and display the vibration of the whole working machine and the vibration of only a rotary body selectively by providing the titled device with a detecting mode selecting device. CONSTITUTION:Whether a rotary body vibration detecting mode is selected or not is discriminated by depressing a detecting mode selecting switch 36. When a whole vibration detecting mode is selected and set up as the discriminated result, the action of an LPF in a filtering circuit 29 is invalidated. Then, plural vibration value data due to the whole vibration are detected on the basis of a detecting signal from an acceleration pickup 7 and the maximum vibration value data out of plural ones is calculated. The data value is displayed on a display device 16 as the vibration value. When a rotary body vibration detecting mode is set up, the frequency selecting function of a BPF is validated. When the original point position of a grindstone is detected by an original point sensor 7, the vibration value data are detected by an A/D converter as much as possible and stored in a RAM26. The primary and secondary average vibration values are obtained from the stored contents and then stored in the RAM26. |
