JPS6415219A - Method and apparatus for manufacturing elliptic sectional pipe - Google Patents
Method and apparatus for manufacturing elliptic sectional pipeInfo
- Publication number
- JPS6415219A JPS6415219A JP16779487A JP16779487A JPS6415219A JP S6415219 A JPS6415219 A JP S6415219A JP 16779487 A JP16779487 A JP 16779487A JP 16779487 A JP16779487 A JP 16779487A JP S6415219 A JPS6415219 A JP S6415219A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- force
- elliptic
- interval
- points
- 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 easily obtain a normal elliptic sectional pipe by pressurizing at symmetrical two points in right and left on a sectional periphery of pipe, further by loading a force on the two points with enlarged interval, lastly by working while holding both end of the elliptic sectional pipe and its shoulder parts. CONSTITUTION:A 1st force p is loaded in the direction to crush a circular pipe 1 on parallel two points separated with an interval (a) on the sectional periphery of the circular pipe 1. Then with the deforming of the pipe 1, a 2nd two parallel force Q are loaded on two points symmetrically separated in the right and left with an interval (b) larger than the interval (a) on the periphery of the pipe section. Further, with the deforming of the pipe 1, the 1st force P is reduced successively to be zero and the 2nd force Q are distributed expanding in the direction to outside on the periphery. At last, both end parts of major axis of the elliptic section and the shoulder parts on a circular arc of both end of the ellipse are held by reaction forces S and T to finish the work, the normal-shaped elliptic pipe 10 is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16779487A JPS6415219A (en) | 1987-07-07 | 1987-07-07 | Method and apparatus for manufacturing elliptic sectional pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16779487A JPS6415219A (en) | 1987-07-07 | 1987-07-07 | Method and apparatus for manufacturing elliptic sectional pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6415219A true JPS6415219A (en) | 1989-01-19 |
| JPH0479727B2 JPH0479727B2 (en) | 1992-12-16 |
Family
ID=15856230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16779487A Granted JPS6415219A (en) | 1987-07-07 | 1987-07-07 | Method and apparatus for manufacturing elliptic sectional pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6415219A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1941955A1 (en) * | 2005-10-28 | 2008-07-09 | Toyota Jidosha Kabushiki Kaisha | Method of correcting metal tube and correcting press metal die |
-
1987
- 1987-07-07 JP JP16779487A patent/JPS6415219A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1941955A1 (en) * | 2005-10-28 | 2008-07-09 | Toyota Jidosha Kabushiki Kaisha | Method of correcting metal tube and correcting press metal die |
| EP1941955A4 (en) * | 2005-10-28 | 2012-01-11 | Toyota Motor Co Ltd | Method of correcting metal tube and correcting press metal die |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0479727B2 (en) | 1992-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071216 Year of fee payment: 15 |