| 摘要 |
PROBLEM TO BE SOLVED: To provide a hole curve measuring method that, when the hole curve formed by a punch machine is measured, can maximize the accuracy of a measuring apparatus and smoothly move a probe without being affected by an influence of the irregularity on a hole wall surface punched by the measuring apparatus and can efficiently perform measurement work of a hole curve along a hole axis.SOLUTION: A hole curve measuring method is a method of measuring the curve of a hole 51 formed by a punch machine 52 such as a crawler drill. A probe 10 for measuring the hole curve is inserted into a water hole 40a of a rod 40 for punch used by the punch machine 52, and the probe 10 is moved into the hole 51 along the water hole 40a, thereby measuring the curve state of the formed hole 51. |
