JPS5736022A - Forming method for wavy wrinkle in curved sheet - Google Patents

Forming method for wavy wrinkle in curved sheet

Info

Publication number
JPS5736022A
JPS5736022A JP11019180A JP11019180A JPS5736022A JP S5736022 A JPS5736022 A JP S5736022A JP 11019180 A JP11019180 A JP 11019180A JP 11019180 A JP11019180 A JP 11019180A JP S5736022 A JPS5736022 A JP S5736022A
Authority
JP
Japan
Prior art keywords
wavy
curved part
blank
sheet
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.)
Granted
Application number
JP11019180A
Other languages
Japanese (ja)
Other versions
JPS6358649B2 (en
Inventor
Tomomi Gotou
Kazuo Ubagai
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.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy Industries 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 Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP11019180A priority Critical patent/JPS5736022A/en
Publication of JPS5736022A publication Critical patent/JPS5736022A/en
Publication of JPS6358649B2 publication Critical patent/JPS6358649B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To simplify the forming process, and to improve the product quality, by successively carrying out a bending process for a flat part into a curved part and a forming process for a wavy wrinkle in the flat part.
CONSTITUTION: A preliminarily bent sheet bland 16' is put on a blank holder 27 so as to fit a curved part R of the sheet blank 16' in a cavity of the blank holder 27; then, the curved part R of the sheet blank 16' is clamped between the blank holder 27 and a punch 29 provided with a wavy wrinkle shape grooved concave die 28 as a counter part to a die 25 having wavy wrinkle shape grooves formed in expectation of amount of the spring back phenomenon. If the holder 27 and the punch 29 are pushed down, the sheet blank 16' is bitten and pressed between the die 25 and the punch 29 so that the flat parts P, P are bent continuing to the curved part R; at the same time, wavy wrinkies 8, 8... continuing to the wavy wrinkles 8, 8... of the curved part R are press formed in the flat parts P, P. The end parts of wavy wrinkles 8, 8... formed in the curved part R of the sheet blank 16' are formed so as to smoothly disappear into the sheet surface, so that the connecting parts of wavy wrinkles 8 of the curved part R and the flat part P do not appear in a secondarily bent sheet blank 16"; as a result, the terminal parts 28, 28 of the curved part R are freed from the formation of steps and working wrinkles.
COPYRIGHT: (C)1982,JPO&Japio
JP11019180A 1980-08-13 1980-08-13 Forming method for wavy wrinkle in curved sheet Granted JPS5736022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11019180A JPS5736022A (en) 1980-08-13 1980-08-13 Forming method for wavy wrinkle in curved sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11019180A JPS5736022A (en) 1980-08-13 1980-08-13 Forming method for wavy wrinkle in curved sheet

Publications (2)

Publication Number Publication Date
JPS5736022A true JPS5736022A (en) 1982-02-26
JPS6358649B2 JPS6358649B2 (en) 1988-11-16

Family

ID=14529348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11019180A Granted JPS5736022A (en) 1980-08-13 1980-08-13 Forming method for wavy wrinkle in curved sheet

Country Status (1)

Country Link
JP (1) JPS5736022A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62179056U (en) * 1986-04-30 1987-11-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62179056U (en) * 1986-04-30 1987-11-13

Also Published As

Publication number Publication date
JPS6358649B2 (en) 1988-11-16

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