JPS5484182A - Oil hydraulic pressure apparatus - Google Patents

Oil hydraulic pressure apparatus

Info

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
Application number
JP15197477A
Other languages
Japanese (ja)
Other versions
JPS618282B2 (en
Inventor
Toshio Ihata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15197477A priority Critical patent/JPS5484182A/en
Publication of JPS5484182A publication Critical patent/JPS5484182A/en
Publication of JPS618282B2 publication Critical patent/JPS618282B2/ja
Granted legal-status Critical Current

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
JP15197477A 1977-12-16 1977-12-16 Oil hydraulic pressure apparatus Granted JPS5484182A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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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