EP1763638B1 - Druckmittelzylinder mit druckübersetzung - Google Patents

Druckmittelzylinder mit druckübersetzung Download PDF

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Publication number
EP1763638B1
EP1763638B1 EP05769977A EP05769977A EP1763638B1 EP 1763638 B1 EP1763638 B1 EP 1763638B1 EP 05769977 A EP05769977 A EP 05769977A EP 05769977 A EP05769977 A EP 05769977A EP 1763638 B1 EP1763638 B1 EP 1763638B1
Authority
EP
European Patent Office
Prior art keywords
pressure
cylinder
piston
medium
roll
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.)
Not-in-force
Application number
EP05769977A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1763638A1 (de
Inventor
Rudolf Langeder
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.)
Primetals Technologies Austria GmbH
Original Assignee
Siemens VAI Metals Technologies GmbH and Co
Siemens VAI Metals Technologies GmbH Austria
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 Siemens VAI Metals Technologies GmbH and Co, Siemens VAI Metals Technologies GmbH Austria filed Critical Siemens VAI Metals Technologies GmbH and Co
Publication of EP1763638A1 publication Critical patent/EP1763638A1/de
Application granted granted Critical
Publication of EP1763638B1 publication Critical patent/EP1763638B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/032—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters
    • F15B11/0325—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters the fluid-pressure converter increasing the working force after an approach stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/214—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being hydrotransformers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration

Definitions

  • the subject invention relates to a pressure cylinder with pressure transmission according to the preamble of claim 1, and a use of such a pressure cylinder as a positioning cylinder in a rolling stand.
  • Pressure cylinder must be able to apply high forces for certain applications, eg in rolling stands, and / or be able to position exactly.
  • a pressure medium cylinder for example a hydraulic cylinder
  • a piston having a large cross section and / or the pressure medium cylinder must be supplied with pressurized fluid under high pressure.
  • the pressure medium cylinder is very large and in the second case, a high cost must be operated for the pressure medium system.
  • a large amount of pressure medium must be moved, whereby the dynamics of such cylinders, so the time to perform actuator movements of the cylinder suffers.
  • the WO 02/053920 A2 shows a hydraulic or hydropneumatic pressure booster, which unites a low-pressure cylinder and a working cylinder in a housing.
  • the two pistons can not be controlled independently of each other.
  • the pressure medium for the working cylinder is not supplied from the outside, but is included in the pressure booster, which can lead to problems with leakage losses and the pressure medium must be replenished regularly.
  • a hydraulic cylinder according to the preamble of claim 1, refer to, in which a hydraulically driven pressure booster piston increases the hydraulic pressure on the working cylinder.
  • a displacement measuring system for controlling the piston positions is described. However, only one piston can be detected with respect to its position.
  • US 5,207,267 discloses a cylinder having two pistons operatively connected to each other. Each piston rod has its own measuring device, so that a more complex measuring device is necessary.
  • a cylinder may e.g. coarsely prepositioned and the second cylinder can be used for fine positioning under high pressure and high dynamics.
  • such a pressure medium cylinder can also be operated and controlled particularly flexibly and simply by using one cylinder for coarse positioning and a second cylinder for fine positioning under high pressure and low response times.
  • the pressure medium cylinder is also equipped with a position measuring system, with which the position of at least one of the two cylinder piston can be detected, since the thus detectable actual position of a piston can be used directly for a control or control.
  • the pressure medium cylinder here a hydraulic cylinder 1, after Fig. 1 has a housing 2 in which two cylinders, a pressure booster cylinder 5 and a setting cylinder 8, are arranged.
  • a piston, a pressure booster piston 3 and an adjusting piston 6 are arranged in each of the two cylinders 5, 8, a piston, a pressure booster piston 3 and an adjusting piston 6 are arranged.
  • the pressure booster cylinder 5 and the adjusting cylinder 8 are hydraulically separated from each other and can be controlled independently of each other via their own supply line 9, 11 and own discharge 10, 12 for hydraulic fluid.
  • the Anstellkolben 6 has a Anstellkolbenstange 7, which is guided through the housing 2 of the hydraulic cylinder 1 to the outside and can be used for example as any actuator or can be associated with such.
  • the Anstellkolben 6 may also have a recess 15 in the size of the cross section of the pressure transmission piston rod 4, as in Fig. 1 indicated to avoid contact, for example in case of malfunction, between the pressure transmission piston rod 4 and Anstellkolben 6 and a possible damage to the same.
  • the pressure booster piston 3 is connected to a pressure booster piston rod 4, which is guided in a partition wall formed by a part of the housing 2 between the pressure booster cylinder 5 and adjusting cylinder 8 and through this and thus operatively connected to the adjusting cylinder 8 and with the hydraulic fluid volume of the Anstellzylinders 8 in connection stands.
  • the pressure booster piston 3 and the pressure booster piston rod 4 is dimensioned here such that the pressure booster piston rod 4 does not dive into the Anstellzylinderraum in an uppermost position of the pressure booster piston 3.
  • a piston-side pressure is thus translated in the ratio of the cross sections of the pressure booster piston 3 and the pressure booster piston rod 4, so enlarged, on the Anstellkolben 6 piston side thus acts thus increased pressure.
  • the Anstellkolben 6 is further connected to a encoder armature 13, which here by the pressure translation piston rod 4, the pressure booster piston 3 and the housing of the hydraulic cylinder 1 and carried out with a suitable Wegmesssystem 14, e.g. a well-known electrical or optical system connected.
  • the displacement measuring system 14 may e.g. with a control of the hydraulic cylinder 1 and / or the control of a device operated by the hydraulic cylinder 1, such as e.g. a roll of a rolling mill, be linked, e.g. as actual value transmitter.
  • Both pistons 3, 6 are on the piston side, ie at the supply lines 9, 11, with a pressurized, For example, a pressure of 290 bar, connected hydraulic system. Both cylinders can therefore be supplied by the same hydraulic system.
  • Piston rod side so at the discharge lines 10, 12, is at both cylinders 5, 8, a constant, reduced pressure, for example, a pressure of about 50 bar, to.
  • the control of the cylinders 5, 8 can be done as well known by means arranged in the supply 9, 11 and / or discharge 10, 12 known servo valves.
  • the control path of the intensifier multiplies by the same ratio.
  • the pressure transmission cylinder 5 of the Anstellkolben 6 can be driven and moved with a multiplied pressure. It is thus possible with the hydraulic cylinder 1 according to the invention with a hydraulic system of relatively low pressure and small dimensions to pressurize the Anstellkolben 6 with a x times the pressure of the hydraulic system.
  • the transmission ratio is about 1 to 4, ie from the 290 bar piston pressure of the pressure booster 1160 bar would result in the adjusting cylinder 8.
  • Such a hydraulic cylinder 1 can be used particularly advantageously as a setting cylinder 28 in a roll stand, as in Fig. 2 shown schematically.
  • the rolling stand 20 here consists of two work rolls 22 and two backup rolls 21 and there is a rolled strip 23, which passes through between the two work rolls 22 rolled.
  • an inventive hydraulic cylinder 1 is arranged, the adjusting cylinder 7 actuates a here only indicated adjusting device 24.
  • a control unit 25 receives measurement data from the displacement measuring system 14 and controls the hydraulic cylinder 1.
  • the control unit 25 can control even further parts of the system or even receive data from other sensors 26 as in Fig. 2 indicated.
  • the control unit 25 may also be linked to a higher-level control 27, for example a system control.
  • the hydraulic cylinder 1 now regulates by the control unit 25 as described above according to the specifications and under control of the pressure booster cylinder 5 with sufficient reaction times, all resulting from the different rolling forces roll gap changes. For this purpose, measured values required with the sensors 26 can be detected and supplied to the control unit 25.
  • the hydraulic cylinder 1 Due to the small volume of the two cylinders 5, 8, the hydraulic cylinder 1 still has sufficiently high response times with still very high achievable pressures. At the same time, the controllability of the hydraulic cylinder 1 is not impaired by the possibility of controlling the two cylinders 5, 8 independently of one another.
  • the use of such a pressure cylinder 1 thus lends itself wherever high forces are required in a small footprint, in addition to rolling stands, for example. without limitation also for forging presses or upsetting frames.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Color Printing (AREA)
  • Pens And Brushes (AREA)
  • Control Of Fluid Pressure (AREA)
  • Lubricants (AREA)
EP05769977A 2004-07-02 2005-06-16 Druckmittelzylinder mit druckübersetzung Not-in-force EP1763638B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0112304A AT500476B8 (de) 2004-07-02 2004-07-02 Druckmittelzylinder mit druckübersetzung
PCT/EP2005/006476 WO2006002772A1 (de) 2004-07-02 2005-06-16 Druckmittelzylinder mit druckübersetzung

Publications (2)

Publication Number Publication Date
EP1763638A1 EP1763638A1 (de) 2007-03-21
EP1763638B1 true EP1763638B1 (de) 2008-05-07

Family

ID=35045434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05769977A Not-in-force EP1763638B1 (de) 2004-07-02 2005-06-16 Druckmittelzylinder mit druckübersetzung

Country Status (12)

Country Link
US (1) US7698893B2 (ru)
EP (1) EP1763638B1 (ru)
JP (1) JP4668991B2 (ru)
CN (1) CN100532865C (ru)
AT (2) AT500476B8 (ru)
BR (1) BRPI0512936A (ru)
CA (1) CA2572486C (ru)
DE (1) DE502005004029D1 (ru)
RU (1) RU2377446C2 (ru)
SA (1) SA05260195B1 (ru)
UA (1) UA84088C2 (ru)
WO (1) WO2006002772A1 (ru)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392842A (zh) * 2011-10-27 2012-03-28 中联重科股份有限公司 破碎机及液压控制***、液压缸
DE102012008902A1 (de) 2012-05-08 2013-11-14 Tox Pressotechnik Gmbh & Co. Kg Hydropneumatische Vorrichtung zur Druckübersetzung und Nietvorrichtung
WO2016079251A1 (en) * 2014-11-21 2016-05-26 Des S.R.L. Fluid flow rate multiplier
CN104595275B (zh) * 2014-11-30 2017-02-22 贵州红林机械有限公司 一种三位置精密气缸
CN104525581A (zh) * 2014-12-31 2015-04-22 太原磬泓机电设备有限公司 一种轧辊辊距在线动态调整装置
EP3150292A1 (de) * 2015-10-02 2017-04-05 Primetals Technologies Austria GmbH Anstellvorrichtung
US10138729B2 (en) * 2016-10-20 2018-11-27 Deere & Company Drive assembly with pressure force aggregating piston arrangement for hydraulic motor speed/torque selector
WO2018190756A1 (en) * 2017-04-11 2018-10-18 Saab Ab A fluid actuator arrangement and a method for control of a fluid actuator arrangement
CN111729614A (zh) * 2020-07-06 2020-10-02 郑州康拜特超硬材料有限公司 一种六面顶压机及其制造方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE613343C (de) * 1935-05-17 Reineke Regler Vertriebsgesell Mehrfachkaliberwalzwerk zum gleichzeitigen Walzen mehrerer Adern
DE1253660B (de) * 1962-02-15 1967-11-09 Neumann O H G Walzgeruest mit geschlossenen Staendern und einer Regeleinrichtung zum toleranzhaltigen Walzen
CA923790A (en) * 1970-10-30 1973-04-03 J. Beneteau Donald Pressure intensifier cylinder
US3883938A (en) * 1974-03-04 1975-05-20 Alfred W Schmidt Fluid-powered crimping press
US4481800A (en) * 1982-10-22 1984-11-13 Kennecott Corporation Cold rolling mill for metal strip
GB8513553D0 (en) * 1985-05-29 1985-07-03 Davy Mckee Poole Hydraulic ram assembly
KR960007629B1 (ko) * 1990-08-09 1996-06-07 도오시바 기까이 가부시기가이샤 다이캐스트머신의 사출제어방법
DE59301338D1 (de) * 1993-03-29 1996-02-15 Siemens Ag Verfahren und Anordnung zur hydraulischen Walzspaltregelung
JP2000009104A (ja) * 1998-06-19 2000-01-11 Akio Wada 油圧機構
JP3034862B1 (ja) * 1999-02-23 2000-04-17 三菱電機株式会社 シ―ム溶接機
JP3417475B2 (ja) * 2000-03-02 2003-06-16 マイクロハード株式会社 圧延機油圧圧下用シリンダ装置
JP3474840B2 (ja) * 2000-09-11 2003-12-08 株式会社南武 油圧シリンダの増圧装置
JP3364215B1 (ja) * 2002-03-12 2003-01-08 有限会社本田製作所 複動式増圧シリンダ及びシリンダ内増圧方法

Also Published As

Publication number Publication date
CA2572486A1 (en) 2006-01-12
RU2007104052A (ru) 2008-08-10
JP4668991B2 (ja) 2011-04-13
AT500476B1 (de) 2006-07-15
WO2006002772A1 (de) 2006-01-12
JP2008504499A (ja) 2008-02-14
US20070289440A1 (en) 2007-12-20
UA84088C2 (ru) 2008-09-10
US7698893B2 (en) 2010-04-20
CN100532865C (zh) 2009-08-26
BRPI0512936A (pt) 2008-04-15
RU2377446C2 (ru) 2009-12-27
CA2572486C (en) 2013-08-20
ATE394599T1 (de) 2008-05-15
SA05260195B1 (ar) 2008-03-29
DE502005004029D1 (de) 2008-06-19
CN1989349A (zh) 2007-06-27
AT500476B8 (de) 2007-02-15
EP1763638A1 (de) 2007-03-21
AT500476A1 (de) 2006-01-15

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