JPS57127526A - Press drawing method for thin cylinder - Google Patents

Press drawing method for thin cylinder

Info

Publication number
JPS57127526A
JPS57127526A JP56012077A JP1207781A JPS57127526A JP S57127526 A JPS57127526 A JP S57127526A JP 56012077 A JP56012077 A JP 56012077A JP 1207781 A JP1207781 A JP 1207781A JP S57127526 A JPS57127526 A JP S57127526A
Authority
JP
Japan
Prior art keywords
slender
thin cylinder
press drawing
drawing method
punch
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
JP56012077A
Other languages
Japanese (ja)
Inventor
Toshio Aoki
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.)
AOKI SEISAKUSHO KK
Original Assignee
AOKI SEISAKUSHO KK
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 AOKI SEISAKUSHO KK filed Critical AOKI SEISAKUSHO KK
Priority to JP56012077A priority Critical patent/JPS57127526A/en
Publication of JPS57127526A publication Critical patent/JPS57127526A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/21—Deep-drawing without fixing the border of the blank

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE:To make the lower end of peripheral side of a thin cylinder thickest by press drawing a thin metallic plate with a punch that has slenderized peripheral face at the tip. CONSTITUTION:Desired length from the lower end of a punch is formed slender, and the lower part of a die 6 is made to small diameter and slender (a). Accordingly, the thickness of the slender part (b) of the die 6 becomes greater and large tightening strength is obtained. Large tightening strength of the pin of an electric bulb base is obtained and connection between the body of the base and the pin is made more perfect.
JP56012077A 1981-01-29 1981-01-29 Press drawing method for thin cylinder Pending JPS57127526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56012077A JPS57127526A (en) 1981-01-29 1981-01-29 Press drawing method for thin cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012077A JPS57127526A (en) 1981-01-29 1981-01-29 Press drawing method for thin cylinder

Publications (1)

Publication Number Publication Date
JPS57127526A true JPS57127526A (en) 1982-08-07

Family

ID=11795516

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012077A Pending JPS57127526A (en) 1981-01-29 1981-01-29 Press drawing method for thin cylinder

Country Status (1)

Country Link
JP (1) JPS57127526A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603923A (en) * 1983-06-20 1985-01-10 Umedate Seisakusho:Kk Drawing die
FR2803230A1 (en) * 1999-12-31 2001-07-06 Peugeot Citroen Automobiles Sa Sheet steel press e.g. for vehicle body components has recessed matrix forming relaxation cavity

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499468A (en) * 1972-05-26 1974-01-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499468A (en) * 1972-05-26 1974-01-28

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603923A (en) * 1983-06-20 1985-01-10 Umedate Seisakusho:Kk Drawing die
FR2803230A1 (en) * 1999-12-31 2001-07-06 Peugeot Citroen Automobiles Sa Sheet steel press e.g. for vehicle body components has recessed matrix forming relaxation cavity

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