JPS566746A - Working method of coupling - Google Patents

Working method of coupling

Info

Publication number
JPS566746A
JPS566746A JP8309479A JP8309479A JPS566746A JP S566746 A JPS566746 A JP S566746A JP 8309479 A JP8309479 A JP 8309479A JP 8309479 A JP8309479 A JP 8309479A JP S566746 A JPS566746 A JP S566746A
Authority
JP
Japan
Prior art keywords
parts
flat plate
blank
coupling
blank flat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8309479A
Other languages
Japanese (ja)
Inventor
Yoshimitsu Nakamura
Mitsuo Sugioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP8309479A priority Critical patent/JPS566746A/en
Publication of JPS566746A publication Critical patent/JPS566746A/en
Pending legal-status Critical Current

Links

Landscapes

  • Forging (AREA)

Abstract

PURPOSE: To enable the continous production of couplins without any material loss by forming a blank flat plate which has beforehand been applied with tapping and the special threading corrugating, into pipe form.
CONSTITUTION: A flat part having undergone piercing and tapping 6 is formed in approximately right half portion of a blank flat plate and a corrugated part consisting of crest parts having thread parts 11 and through parts 9 is formed by rolling in the left half portion. Further, this blank is formed into a blank flat plate C cut with recesses 14... at one end and raised parts 13... on ther other. Thence, this blank flat plate C is bent to pipe form and the above-mentioned raised parts 13 are fitted into the recesses 14. These yield the coupling consisting of the thread- less coupling pipe part A and the threaded coupling pipe part B.
COPYRIGHT: (C)1981,JPO&Japio
JP8309479A 1979-06-29 1979-06-29 Working method of coupling Pending JPS566746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8309479A JPS566746A (en) 1979-06-29 1979-06-29 Working method of coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8309479A JPS566746A (en) 1979-06-29 1979-06-29 Working method of coupling

Publications (1)

Publication Number Publication Date
JPS566746A true JPS566746A (en) 1981-01-23

Family

ID=13792583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8309479A Pending JPS566746A (en) 1979-06-29 1979-06-29 Working method of coupling

Country Status (1)

Country Link
JP (1) JPS566746A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020074580A (en) * 2001-03-20 2002-10-04 (주)동서엠.티 Manufacturing method of strip steel pipe
KR100949042B1 (en) 2009-07-16 2010-03-24 강인혜 A step bolt of telegraph pole

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020074580A (en) * 2001-03-20 2002-10-04 (주)동서엠.티 Manufacturing method of strip steel pipe
KR100949042B1 (en) 2009-07-16 2010-03-24 강인혜 A step bolt of telegraph pole

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