JPS5650737A - Working method of thread-less coupling - Google Patents

Working method of thread-less coupling

Info

Publication number
JPS5650737A
JPS5650737A JP12624479A JP12624479A JPS5650737A JP S5650737 A JPS5650737 A JP S5650737A JP 12624479 A JP12624479 A JP 12624479A JP 12624479 A JP12624479 A JP 12624479A JP S5650737 A JPS5650737 A JP S5650737A
Authority
JP
Japan
Prior art keywords
parts
arc
flat plate
convex
tapped holes
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
JP12624479A
Other languages
Japanese (ja)
Inventor
Mitsuo Sugioka
Takashi Ozasa
Masanobu Ogasawara
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 JP12624479A priority Critical patent/JPS5650737A/en
Publication of JPS5650737A publication Critical patent/JPS5650737A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To prevent deformation of tapped holes by forming arc parts to part of a flat plate, subjecting the same to piercing and tapping and forming square-plate-like blank materials having fitting convex and concave parts at both ends.
CONSTITUTION: A flat plate 1 is chamfered with a roll 2 having tapered faces 2a and arc parts 3 are bent to part of the flat plate with a male die 3a and a female die 3b. Under holes 4 are worked to these arc parts 3 and are then subjected to counter-sinking 5 and are formed with tapped holes 5a with drills. At the same time, projections 10 for stoppers of end faces of conduit tubes and manufactures' markings 6 are provided. Thence, a square-plate-like blank material 9 having convex parts 7 wider at the tips than at the roots at one end face and concave parts 8 at the other end face is formed. This blank material 9 is bent with a push bar 12, with the circular column 11 of the same curvature as that of the arc part 3 of this blank material 9 as a core material, and vibrations are given thereto fit the convex and concave parts, whereby the thread-less coupling is obtained. Since the arc part having the tapped holes does not receive bending work, it can be prevented from being deformed to an elliptical shape.
COPYRIGHT: (C)1981,JPO&Japio
JP12624479A 1979-09-29 1979-09-29 Working method of thread-less coupling Pending JPS5650737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12624479A JPS5650737A (en) 1979-09-29 1979-09-29 Working method of thread-less coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12624479A JPS5650737A (en) 1979-09-29 1979-09-29 Working method of thread-less coupling

Publications (1)

Publication Number Publication Date
JPS5650737A true JPS5650737A (en) 1981-05-08

Family

ID=14930356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12624479A Pending JPS5650737A (en) 1979-09-29 1979-09-29 Working method of thread-less coupling

Country Status (1)

Country Link
JP (1) JPS5650737A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111702052A (en) * 2020-05-20 2020-09-25 广州文冲船厂有限责任公司 Device for marking starting bending point and stopping bending point of bent pipe and using method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111702052A (en) * 2020-05-20 2020-09-25 广州文冲船厂有限责任公司 Device for marking starting bending point and stopping bending point of bent pipe and using method

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