JPS5750231A - Manufacture of metallic pipe for connector of communication cable - Google Patents

Manufacture of metallic pipe for connector of communication cable

Info

Publication number
JPS5750231A
JPS5750231A JP12489280A JP12489280A JPS5750231A JP S5750231 A JPS5750231 A JP S5750231A JP 12489280 A JP12489280 A JP 12489280A JP 12489280 A JP12489280 A JP 12489280A JP S5750231 A JPS5750231 A JP S5750231A
Authority
JP
Japan
Prior art keywords
pipe
round bar
forming
punch
metallic
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
JP12489280A
Other languages
Japanese (ja)
Inventor
Akira Yamamoto
Yoshio Matsuda
Atsunari Ishibashi
Masahiro Suzuki
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.)
Fujikura Ltd
Original Assignee
Fujikura 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 Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP12489280A priority Critical patent/JPS5750231A/en
Publication of JPS5750231A publication Critical patent/JPS5750231A/en
Pending legal-status Critical Current

Links

Landscapes

  • Forging (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

PURPOSE: To manufacture a highly accurate connector pipe at low cost by forming a tapered face while forming a pipe by plastic deformation of a metallic round bar and punching the thin part dividing it into plural parts.
CONSTITUTION: A metallic round bar 10 is inserted into a die 12 provided with a forming hole, and the part above the first punch is formed to a plane and the lower edge is formed to a form that conforms to a circumferentially recessed groove 14. The round bar 10 is turned upside-down and pressed by the second punch 18 having a tapered face 2c to form a recessed part 10a in the upper part of the round bar 10. It is then turned upside-down and a forming pin 21 is inserted into the part 10a. At the same time, it is pressed inserting an eject pipe 22 from below and a recessed part is formed in the upper part and a pipe hole is formed slowly in the lower part. Next, an ejection pipe 25 is inserted, and a finishing punch 26 provided with an inversely tapered edge is inserted into the pipe hole. The eject pipe 25 is lowered, and the thin part 23 is punched by plural times of punching dividing into central part and peripheral part. By this way, a metallic pipe free from burr etc. in the tapered part is obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP12489280A 1980-09-09 1980-09-09 Manufacture of metallic pipe for connector of communication cable Pending JPS5750231A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12489280A JPS5750231A (en) 1980-09-09 1980-09-09 Manufacture of metallic pipe for connector of communication cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12489280A JPS5750231A (en) 1980-09-09 1980-09-09 Manufacture of metallic pipe for connector of communication cable

Publications (1)

Publication Number Publication Date
JPS5750231A true JPS5750231A (en) 1982-03-24

Family

ID=14896681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12489280A Pending JPS5750231A (en) 1980-09-09 1980-09-09 Manufacture of metallic pipe for connector of communication cable

Country Status (1)

Country Link
JP (1) JPS5750231A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62244989A (en) * 1986-06-20 1987-10-26 株式会社大井製作所 Locking device for automobile
JPS63203236A (en) * 1987-02-17 1988-08-23 Sumitomo Metal Ind Ltd Extend hollow method for hollow billet
JPS63203233A (en) * 1987-02-17 1988-08-23 Sumitomo Metal Ind Ltd Reaming method for hollow billet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62244989A (en) * 1986-06-20 1987-10-26 株式会社大井製作所 Locking device for automobile
JPS63203236A (en) * 1987-02-17 1988-08-23 Sumitomo Metal Ind Ltd Extend hollow method for hollow billet
JPS63203233A (en) * 1987-02-17 1988-08-23 Sumitomo Metal Ind Ltd Reaming method for hollow billet

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