| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inner diameter measurement device for a conduit line and an inner diameter measurement method for the conduit line that measure an inner diameter of the conduit line at an arbitrary peripheral position. <P>SOLUTION: The inner diameter measurement device 1 includes a device body 10, a measurement unit 11 which is provided rotatably to the device body 10, and has a gage head 31 capable of moving in a radial direction of the conduit line, a centering mechanism 12 which positions the center of rotation of the measurement unit 11 on the center axis CL of the conduit line, and a motor 14 which rotates the measurement unit 11 along a peripheral direction of the conduit line. Then the measurement unit 11 is rotated on the device body 10 along the peripheral direction of the conduit line to change the position of the inner surface of the conduit line that the gage head 31 abuts against in the peripheral direction, and inner diameters are measured at a plurality of positions on the inner surface of the conduit line in the peripheral direction, respectively. <P>COPYRIGHT: (C)2012,JPO&INPIT |
