Title:
CLEARANCE MEASURING METHOD, CLEARANCE MEASURING DEVICE, SCREW JOINT MEASURING METHOD, SCREW JOINT MEASUREMENT SYSTEM, MEASUREMENT TERMINAL, THREADED JOINT MANUFACTURING METHOD, AND THREADED JOINT QUALITY MANAGEMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2024/070241
Kind Code:
A1
Abstract:
In order to efficiently confirm joining of threaded joints on pipes, the present invention provides a clearance measuring method, for a pair of threaded joints having a male joint and a female joint corresponding to the male joint, for measuring the clearance between the thread of the male joint and the thread of the female joint. The clearance measuring method includes: a joining completed state setting step for setting a joining completed state in which joining of the male joint and the female joint is completed, on the basis of data on thread shapes of the male joint and the female joint; a clearance measuring step for measuring, in the joining completed state, the clearance between the thread of the male joint and the thread of the female joint corresponding to the thread of the male joint; and a rotated state setting step for setting a state in which rotation is made by a predetermined angle in such a direction as to enjoining the joining, if the joining of the male joint and the female joint is not an unjoined state after the clearance measuring step. The steps from the clearance measuring step to the rotated state setting step are repeatedly executed until the joining is unjoined.
Inventors:
OHBA YUTO (JP)
Application Number:
PCT/JP2023/028725
Publication Date:
April 04, 2024
Filing Date:
August 07, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
G01B21/16; F16L15/00; G01B21/20
Foreign References:
| JP2004238942A | 2004-08-26 | |||
| JP2004144604A | 2004-05-20 | |||
| JP2011203108A | 2011-10-13 | |||
| JP2020035434A | 2020-03-05 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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