| 摘要 |
PROBLEM TO BE SOLVED: To shorten the stop time of an inspection line by moving two angle probes to transmit/receive the ultrasonic wave diagonally in the direction opposite to each other in the horizontal direction opposite to each other, holding them together with a normal probe, and rotating them on an outer peripheral surface of an object. SOLUTION: When a worm 13 projected outward of a probe holder 19 is rotated, a worm wheel shaft 14 is also rotated, and nuts 17, 18 are brought close/away from the axis Y-Y' of an object 1 is line-symmetric manner by a right screw part 16a and a left screw part 16b at both ends. A slide plate having an angle probe 12 is mounted on the nuts 17, 18, respectively, and the deviation X1 is variable according to the rotation of the worm 13. By automatically controlling the rotation of the worm 13, the angle of incidence of the ultrasonic wave incident on the surface of the object 1 from the angle probe 12 is constant. When the size of the object is changed, it is sufficient to rotate the worm 13, and horizontally move the angle probe 12, thereby shortening the time for changing the condition. |
