JPS5689332A - Method of performing bending work without changing width of material - Google Patents

Method of performing bending work without changing width of material

Info

Publication number
JPS5689332A
JPS5689332A JP16723079A JP16723079A JPS5689332A JP S5689332 A JPS5689332 A JP S5689332A JP 16723079 A JP16723079 A JP 16723079A JP 16723079 A JP16723079 A JP 16723079A JP S5689332 A JPS5689332 A JP S5689332A
Authority
JP
Japan
Prior art keywords
pressing
pin
forming
dies
lancing
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.)
Granted
Application number
JP16723079A
Other languages
Japanese (ja)
Other versions
JPS5749289B2 (en
Inventor
Yoshiaki Kawasaki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16723079A priority Critical patent/JPS5689332A/en
Publication of JPS5689332A publication Critical patent/JPS5689332A/en
Publication of JPS5749289B2 publication Critical patent/JPS5749289B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacturing Of Electrical Connectors (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To perform titled working and make subsequent processes stable and continuous by fixing both ends of a part to pressing frames and pushing up the elongation of the part in the bent part forming direction with a pressing mean.
CONSTITUTION: In the 1st, 2nd forming processes (a), (b) of leading end, both ends of a contact pin 44, which is a part, are fixed by supporting frames 41, 42, and the end is formed by press dies 46, 46' and 48, 48' for end forming, thence the pin 44 is pushed up by a pressing mean 47 so as to escape the bend upward according to the extending of the pin in its lateral direction. Next, in a prebending process (c), a bend is made by pressing dies 50, 49 and the pin is formed by a press 51 for end working. Further, in the 3rd forming bending-in process (d) of end, the end is deeply bent in and at the same time, the end is formed by the convex parts of pressing dies 52, 54. In the final unbending process (e), a lancing is put into the pin 44 by a pressing die 56 for lancing at the time of correcting its bend upward to perfect the shape of a contact part. At this same instant, edge parts having pilot holes are made possible to cutting-off.
COPYRIGHT: (C)1981,JPO&Japio
JP16723079A 1979-12-22 1979-12-22 Method of performing bending work without changing width of material Granted JPS5689332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16723079A JPS5689332A (en) 1979-12-22 1979-12-22 Method of performing bending work without changing width of material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16723079A JPS5689332A (en) 1979-12-22 1979-12-22 Method of performing bending work without changing width of material

Publications (2)

Publication Number Publication Date
JPS5689332A true JPS5689332A (en) 1981-07-20
JPS5749289B2 JPS5749289B2 (en) 1982-10-21

Family

ID=15845856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16723079A Granted JPS5689332A (en) 1979-12-22 1979-12-22 Method of performing bending work without changing width of material

Country Status (1)

Country Link
JP (1) JPS5689332A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101927115A (en) * 2009-06-26 2010-12-29 天津市帅普环保科技企业孵化器有限公司 Production process for concave-convex type folding dust-catching cloth bag framework

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101927115A (en) * 2009-06-26 2010-12-29 天津市帅普环保科技企业孵化器有限公司 Production process for concave-convex type folding dust-catching cloth bag framework

Also Published As

Publication number Publication date
JPS5749289B2 (en) 1982-10-21

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