| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring method and device for measuring the cylinder inner diameter at a high speed, and a display method and device for speeding up the cylinder three-dimensional display by shortening the period from cylinder inner diameter measurement to cylinder three-dimensional display. SOLUTION: In the method of moving a measuring head of an air micro-sensor in the axial direction in a cylinder to be measured and measuring the cylinder inner diameter, the inner diameter of the cylinder to be measured is measured and the position (axial position and periaxial position of the cylinder to be measured) of the measuring head is detected while the measuring head is spirally moved from one side to the other side of the opening end of the cylinder to be measured. The inner diameter of the cylinder to be measured in a stopping state of the measuring head is measured as a reference inner diameter value at one point in the axial direction of the cylinder to be measured, and each inner diameter measurement value in the spirally moving state is corrected using the difference between the reference inner diameter value and the inner diameter measurement value near the measuring position of the reference inner diameter value in an inner diameter measurement value group in the spirally moving state. The corrected inner diameter measurement value is set as the cylinder inner diameter measurement value in each position of the measuring head. COPYRIGHT: (C)2009,JPO&INPIT
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