JPS5736022A - Forming method for wavy wrinkle in curved sheet - Google Patents
Forming method for wavy wrinkle in curved sheetInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62179056U (en) * | 1986-04-30 | 1987-11-13 |
-
1980
- 1980-08-13 JP JP11019180A patent/JPS5736022A/en active Granted
Cited By (1)
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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