JPS5584231A - Hydrostatic bulge forming method - Google Patents
Hydrostatic bulge forming methodInfo
- Publication number
- JPS5584231A JPS5584231A JP15630578A JP15630578A JPS5584231A JP S5584231 A JPS5584231 A JP S5584231A JP 15630578 A JP15630578 A JP 15630578A JP 15630578 A JP15630578 A JP 15630578A JP S5584231 A JPS5584231 A JP S5584231A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- metal pipe
- pressure
- closed
- packing
- 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 improve the contacting degree with the packing and enable bulging without causing oil leak even in a metal pipe inferior in roundness, by applying impact of liquid pressure to metal pipe in the initial period of pressurization to deform plastically, and forming while increasing the pressure gradually.
CONSTITUTION: A valve 23 is closed, and valves 12, 22 are opened, and pressure liquid is supplied into the inside 24 of a metal pipe 1 externally fitted to dies 2, 3 through a packing 7. Then, the valve 12 is closed and the valve 23 is opened, and liquid is supplied into a pre-pressurizing chamber 15 until a compressive spring 21 is compressed fully. Then, when the valve 22 is closed and valve 12 is opened, an impact of pressure is applied to the metal pipe 1 from the pre-pressurizing chamber 15. As a result, the both end parts of the metal pipe 1 and the parts not externally fitted with the die 2, 3 are deformed plastically, so that the metal pipe 1 and packing 7 are brought into tight contact. Instantly, oil leak is eliminated. Then, the valve 23 is closed and hydraulic equipment is operated to open the valve 22, and pressure is gradually applied to the metal pipe 1. Thus, a bulge part is formed along the shape of an interval 4 at which the dies 2, 3 are opposing.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15630578A JPS5584231A (en) | 1978-12-20 | 1978-12-20 | Hydrostatic bulge forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15630578A JPS5584231A (en) | 1978-12-20 | 1978-12-20 | Hydrostatic bulge forming method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5584231A true JPS5584231A (en) | 1980-06-25 |
Family
ID=15624891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15630578A Pending JPS5584231A (en) | 1978-12-20 | 1978-12-20 | Hydrostatic bulge forming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5584231A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4748836A (en) * | 1986-03-10 | 1988-06-07 | Ultra-Centrifuge Nederland N.V. | Method of forming a ridge in a tube member |
| US5279142A (en) * | 1991-02-01 | 1994-01-18 | Hde Metallwerk Gmbh | Hydrostatically deforming a hollow body |
| US5303570A (en) * | 1991-02-01 | 1994-04-19 | Hde Metallwerk Gmbh | Hydrostatically deforming a hollow body |
| EP3275567A1 (en) * | 2016-07-25 | 2018-01-31 | Fachhochschule Südwestfalen | Device and method for hydraulic high-speed high-pressure forming |
| CN109404371A (en) * | 2018-06-28 | 2019-03-01 | 吉林省正轩车架有限公司 | A kind of hydraulic system can be shortened interior high-pressure molding process cycle |
-
1978
- 1978-12-20 JP JP15630578A patent/JPS5584231A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4748836A (en) * | 1986-03-10 | 1988-06-07 | Ultra-Centrifuge Nederland N.V. | Method of forming a ridge in a tube member |
| US5279142A (en) * | 1991-02-01 | 1994-01-18 | Hde Metallwerk Gmbh | Hydrostatically deforming a hollow body |
| US5303570A (en) * | 1991-02-01 | 1994-04-19 | Hde Metallwerk Gmbh | Hydrostatically deforming a hollow body |
| EP3275567A1 (en) * | 2016-07-25 | 2018-01-31 | Fachhochschule Südwestfalen | Device and method for hydraulic high-speed high-pressure forming |
| CN109404371A (en) * | 2018-06-28 | 2019-03-01 | 吉林省正轩车架有限公司 | A kind of hydraulic system can be shortened interior high-pressure molding process cycle |
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