JPS57210820A - Core for manufacturing fiber-reinforced plastic cylindrical object - Google Patents
Core for manufacturing fiber-reinforced plastic cylindrical objectInfo
- Publication number
- JPS57210820A JPS57210820A JP56095779A JP9577981A JPS57210820A JP S57210820 A JPS57210820 A JP S57210820A JP 56095779 A JP56095779 A JP 56095779A JP 9577981 A JP9577981 A JP 9577981A JP S57210820 A JPS57210820 A JP S57210820A
- Authority
- JP
- Japan
- Prior art keywords
- core
- frp
- cylindrical object
- diameter
- outer periphery
- 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 manufacture an FRP cylindrical object of good dimensional accuracy by a simple operation, by using a core of which a diameter is adjustable to expand and contract freely, performing forming and cure of the FRP cylindrical object and working of the outer periphery of the cylindrical object.
CONSTITUTION: At first, an FRP cylindrical material is formed in the state of the uniform diameter of the outer periphery of a core and heat cured. A gap generates between the inside diameter of the FRP cylinder and the outside diameter of the core after curing, so the diameter of split outer shells 6 is increased by operating an adjusting mechanism 7 of the core and working of an outer periphery is done, the inside diameter of the FRP cylinder being stressed. Because the same core is used in such a way as the core for FRP forming and the core for mechanical working after forming, the FRP cylindrical object of good dimensional accuracy can be manufactured by a simple operation.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56095779A JPS57210820A (en) | 1981-06-19 | 1981-06-19 | Core for manufacturing fiber-reinforced plastic cylindrical object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56095779A JPS57210820A (en) | 1981-06-19 | 1981-06-19 | Core for manufacturing fiber-reinforced plastic cylindrical object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57210820A true JPS57210820A (en) | 1982-12-24 |
Family
ID=14146961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56095779A Pending JPS57210820A (en) | 1981-06-19 | 1981-06-19 | Core for manufacturing fiber-reinforced plastic cylindrical object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57210820A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5429693A (en) * | 1994-05-09 | 1995-07-04 | The United States Of America As Represented By The Secretary Of The Air Force | Method of making a prestressed composite materials |
| US6803007B2 (en) * | 2001-02-13 | 2004-10-12 | Campagnolo S.R.L. | Method for producing a connector element for connecting frame parts at a joint location in a bicycle framework and connector element obtained thereby |
-
1981
- 1981-06-19 JP JP56095779A patent/JPS57210820A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5429693A (en) * | 1994-05-09 | 1995-07-04 | The United States Of America As Represented By The Secretary Of The Air Force | Method of making a prestressed composite materials |
| US6803007B2 (en) * | 2001-02-13 | 2004-10-12 | Campagnolo S.R.L. | Method for producing a connector element for connecting frame parts at a joint location in a bicycle framework and connector element obtained thereby |
| US7132075B2 (en) * | 2001-02-13 | 2006-11-07 | Campagnolo S.R.L. | Method for producing a connector element for connecting frame parts at a joint location in a bicycle framework and connector element obtained thereby |
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