JPS56168920A - Manufacture of flat disk - Google Patents
Manufacture of flat diskInfo
- Publication number
- JPS56168920A JPS56168920A JP7034880A JP7034880A JPS56168920A JP S56168920 A JPS56168920 A JP S56168920A JP 7034880 A JP7034880 A JP 7034880A JP 7034880 A JP7034880 A JP 7034880A JP S56168920 A JPS56168920 A JP S56168920A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- strip
- flat disk
- conical
- conical cylinder
- 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
Links
Abstract
PURPOSE: To prevent the generation of cracks, bucklings, etc., of a metallic sheet, by forming a conical shape and then by pressing it into a flat shape, in case of manufacturing a doughnut shaped flat disk from a metallic strip.
CONSTITUTION: A straight strip is bent into a cylindrical shape; both edges of this cylindrical wall are butt welded to form a cylinder; this cylinder is formed by a press machine into a conical cylinder. Or otherwise, a circular arc shaped strip 1 is cut off from an iron sheet P and is bent into a conical cylinder. Thus formed conical cylinder shaped strip 1 is put on a lower die 5, and an upper die 6 is brought down in order to press the conical cylinder shaped strip 1 into a doughnut shaped flat disk.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7034880A JPS56168920A (en) | 1980-05-27 | 1980-05-27 | Manufacture of flat disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7034880A JPS56168920A (en) | 1980-05-27 | 1980-05-27 | Manufacture of flat disk |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56168920A true JPS56168920A (en) | 1981-12-25 |
Family
ID=13428826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7034880A Pending JPS56168920A (en) | 1980-05-27 | 1980-05-27 | Manufacture of flat disk |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56168920A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61229431A (en) * | 1985-04-04 | 1986-10-13 | Tooken:Kk | Machining method for metal |
WO2008111122A1 (en) * | 2007-03-12 | 2008-09-18 | Kanemitsu Corporation | Process for manufacturing ring-shaped member |
-
1980
- 1980-05-27 JP JP7034880A patent/JPS56168920A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61229431A (en) * | 1985-04-04 | 1986-10-13 | Tooken:Kk | Machining method for metal |
WO2008111122A1 (en) * | 2007-03-12 | 2008-09-18 | Kanemitsu Corporation | Process for manufacturing ring-shaped member |
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