| 摘要 |
PROBLEM TO BE SOLVED: To provide a centering jig capable of centering, even when a recessed hole formed on an end surface of a shaft-like object is shallow.SOLUTION: A centering jig 1 for centering the shaft-like object 2 comprises a housing 11, a movable part 12 slidably stored in the housing 11 and a spring 13. The housing 11 comprises an opening 11o and a first inclined surface 11t connected to an edge part of the opening 11o on the shaft object 2 side. The movable part 12 comprises a conical shape or a truncated-cone shape of having a second inclined surface 12t on the shaft object 2 side, and forms one inclined surface of continuing the first inclined surface 11t and the second inclined surface 12t in a state of exposing the second inclined surface 12t from the opening 11o of the housing 11. The spring 12 generates a reaction force when a force in the direction for pushing in the housing 11 acts on the movable part 12. |
