JPS5484182A - Oil hydraulic pressure apparatus - Google Patents
Oil hydraulic pressure apparatusInfo
- Publication number
- JPS5484182A JPS5484182A JP15197477A JP15197477A JPS5484182A JP S5484182 A JPS5484182 A JP S5484182A JP 15197477 A JP15197477 A JP 15197477A JP 15197477 A JP15197477 A JP 15197477A JP S5484182 A JPS5484182 A JP S5484182A
- Authority
- JP
- Japan
- Prior art keywords
- pressurized oil
- piston
- valve
- supplied
- high speed
- 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 permit reasonable high speed feeding in return process by utilizing a differential circuit in the high speed return process of a cylinder.
CONSTITUTION: The pressure receiving areas of A2 and A3 are smaller than that of the retuen side pressure chamber B. When pressurized oil is supplied to P1 and P2, keeping a valve V2 in the state shown by the figure, then the pressurized oil enters into the chambers A1, A2, and A3, and a piston 22 rises up with a low speed and a large output. When supplied only into P2, the pressurized oil enters into the chambers A2 and A3, and the piston 22 rises up with a medium speed and medium output, and when the pressurized oil is supplied more into P2 and the valve V2 is switched, the pressurized oil enters only into A3, and the piston 22 rise up with a high speed and a small output. Then, if the valve V2 is set at the state shown by the figure, a valve V1 is opened, and the pressurized oil is supplied into P3, the piston 22 lowers with a medium speed according to the size of the chamber B, and keeping the state as it is, the valve V2 is switched, then the pressurized oil enters into the oil chambers B and A2, and due to the difference of the pressure receiving area, the piston 22 lowers with a high speed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15197477A JPS5484182A (en) | 1977-12-16 | 1977-12-16 | Oil hydraulic pressure apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15197477A JPS5484182A (en) | 1977-12-16 | 1977-12-16 | Oil hydraulic pressure apparatus |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59010629A Division JPS59140903A (en) | 1984-01-23 | 1984-01-23 | Hydraulic device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5484182A true JPS5484182A (en) | 1979-07-04 |
JPS618282B2 JPS618282B2 (en) | 1986-03-13 |
Family
ID=15530284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15197477A Granted JPS5484182A (en) | 1977-12-16 | 1977-12-16 | Oil hydraulic pressure apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5484182A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997020146A1 (en) * | 1995-11-24 | 1997-06-05 | Mannesmann Rexroth Gmbh | Process and device for driving the hydraulic system of a machine |
CN103277356A (en) * | 2013-05-27 | 2013-09-04 | 河北汉智数控机械有限公司 | Oil hydraulic system of machining equipment |
CN104763697A (en) * | 2015-04-14 | 2015-07-08 | 阜阳强松机械制造有限公司 | Hydraulic system for underdrive bending machine |
CN107234201A (en) * | 2017-05-26 | 2017-10-10 | 武汉理工大学 | A kind of controllable heavily loaded forging equipment Hydraulic system and control method of feed speed |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6327690A (en) * | 1986-07-17 | 1988-02-05 | ナショナル住宅産業株式会社 | Fixtures |
-
1977
- 1977-12-16 JP JP15197477A patent/JPS5484182A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997020146A1 (en) * | 1995-11-24 | 1997-06-05 | Mannesmann Rexroth Gmbh | Process and device for driving the hydraulic system of a machine |
US6145307A (en) * | 1995-11-24 | 2000-11-14 | Mannesman Rexoth Ag | Method and device for controlling a hydraulic installation of a utility vehicle |
CN103277356A (en) * | 2013-05-27 | 2013-09-04 | 河北汉智数控机械有限公司 | Oil hydraulic system of machining equipment |
CN104763697A (en) * | 2015-04-14 | 2015-07-08 | 阜阳强松机械制造有限公司 | Hydraulic system for underdrive bending machine |
CN107234201A (en) * | 2017-05-26 | 2017-10-10 | 武汉理工大学 | A kind of controllable heavily loaded forging equipment Hydraulic system and control method of feed speed |
CN107234201B (en) * | 2017-05-26 | 2019-01-01 | 武汉理工大学 | A kind of heavily loaded forging equipment Hydraulic system and control method that feed speed is controllable |
Also Published As
Publication number | Publication date |
---|---|
JPS618282B2 (en) | 1986-03-13 |
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