LOCK SHAFT EXTRACTION JIG FOR TOP RING, SHAFT EXTRACTION JIG UNIT, AND EXTRACTION METHOD OF LOCK SHAFT FOR TOP RING

摘要

PROBLEM TO BE SOLVED: To provide a technology capable of performing takeout (extraction) of a lock shaft from a top ring body simply in a short time.;SOLUTION: A lock shaft extraction jig 10, 20 for a top ring has a ring plate-like jig body 11, 21, and protrusions 12, 22 for ejection curved and extended along the jig body on one surface side of the jig body 11, 21, for pressing the lock shaft 54 fitted into a shaft fitting hole 52b of a top ring body 52. A shaft extraction jig unit 30 using the jig, and an extraction method of the lock shaft for the top ring are also provided.;SELECTED DRAWING: Figure 3;COPYRIGHT: (C)2018,JPO&INPIT