| 摘要 |
<p>PURPOSE:To obtain a nut detecting apparatus, which prevents the occurrence of erroneous recognition for the presence or absence of a nut and can positively determine the position of a base material. CONSTITUTION:A locating pin 11 is inserted into a female screw part 6a of a nut 6, which is fixed to a base material 1 by way of a through hole 1a from the other single-side surface of the base material. Compressed air is jetted through a jetting port 11c, which is provided at an outer surface part 11d of the locating pin 11. The jetting resistance at this time is detected with a pressure sensor 12. When the pressure is high, it is judged that there is the nut 6. When the pressure is low, it is judged that the nut 6 is not present.</p> |
