JPS55133825A - Forming method in press machine - Google Patents
Forming method in press machineInfo
- Publication number
- JPS55133825A JPS55133825A JP4058579A JP4058579A JPS55133825A JP S55133825 A JPS55133825 A JP S55133825A JP 4058579 A JP4058579 A JP 4058579A JP 4058579 A JP4058579 A JP 4058579A JP S55133825 A JPS55133825 A JP S55133825A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- cylinder
- pressure
- keeper
- closed
- 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
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
PURPOSE: To eliminate the deformation like as the dent, etc., of the pressed material generated owing to excessively strong reaction against the cylinder pressure, by adjusting the inner pressure of the cylinder of the press machine provided with the blank holder, etc., being supported by the keeper, the punch, and the keeper cushion cylinder.
CONSTITUTION: In case of applying the drawing work to the iron sheet 9 for use of the refrigerator door, etc., the release valve B and the ON-OFF valve A are closed, and the pressure fluid is introduced into the keeper cushion cylinder 6 by opening the valve C. After setting this pressure to the specified pressure necessary to clamp the iron sheet 9 by adjusting the bleeding valve D, the valves D and C are closed. Next, when the keeper 3 and the pad 5 go down and arrive at the lower dead point, the valve B is opened, the pressure fluid of the cylinder 6 is discharged, and the blank holder 4 goes down by its own weight. After that, the valve B is closed and the valve A is opened to introduce the pressure fluid into the cylinder 6; hereby, the blank holder 4 goes up to knock out the iron sheet 9.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4058579A JPS55133825A (en) | 1979-04-04 | 1979-04-04 | Forming method in press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4058579A JPS55133825A (en) | 1979-04-04 | 1979-04-04 | Forming method in press machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55133825A true JPS55133825A (en) | 1980-10-18 |
Family
ID=12584568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4058579A Pending JPS55133825A (en) | 1979-04-04 | 1979-04-04 | Forming method in press machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55133825A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5027637A (en) * | 1988-12-26 | 1991-07-02 | Nhk Spring Co., Ltd. | Die cushion for applying pressure to a press machine via gas pressurized push rods |
| JP2013121613A (en) * | 2011-12-12 | 2013-06-20 | Toyota Motor Corp | Pressing device and pressing method |
| CN104368702A (en) * | 2013-12-26 | 2015-02-25 | 襄阳东昇机械有限公司 | Drawing die capable of achieving double material pressing by means of time relay and preventing disengaging and deforming |
-
1979
- 1979-04-04 JP JP4058579A patent/JPS55133825A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5027637A (en) * | 1988-12-26 | 1991-07-02 | Nhk Spring Co., Ltd. | Die cushion for applying pressure to a press machine via gas pressurized push rods |
| JP2013121613A (en) * | 2011-12-12 | 2013-06-20 | Toyota Motor Corp | Pressing device and pressing method |
| CN104368702A (en) * | 2013-12-26 | 2015-02-25 | 襄阳东昇机械有限公司 | Drawing die capable of achieving double material pressing by means of time relay and preventing disengaging and deforming |
| CN104368702B (en) * | 2013-12-26 | 2016-03-02 | 襄阳东昇机械有限公司 | The time relay is used for double blank drawing die and solves de-material deformation device |
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