| 摘要 |
PURPOSE:To detect exactly all the distances of a work over the entire direction by disposing a distance detector which rotates freely around the axial center and a rotating position detector which detects the position of the distance detector to the outside periphery on the tip side of a nozzle. CONSTITUTION:While the distances detector 9 is rotated around the nozzle 3, the distance up to the work 4 is taken out as an electric signal via a slip ring 16 and is inputted to a signal processing part 17. The rotating position detector 18 such as rotary encoder is connected to the revolving shaft of a motor 14 for rotating the detector. Said detector detects the position of the detector 9 and inputs the same to the signal processing part 17. The control is normally executed by taking out only the distance signal of the position of the nozzle 3 in the advance direction and only the abnormal distance signal is taken out of the distance signal from the peripheral part of the nozzle 3. The detection of the distance in any position in the peripheral direction of the nozzle is thus made possible. |
