EP2513490A1 - Procédé permettant de faire fonctionner une machine de travail hydraulique - Google Patents

Procédé permettant de faire fonctionner une machine de travail hydraulique

Info

Publication number
EP2513490A1
EP2513490A1 EP10787317A EP10787317A EP2513490A1 EP 2513490 A1 EP2513490 A1 EP 2513490A1 EP 10787317 A EP10787317 A EP 10787317A EP 10787317 A EP10787317 A EP 10787317A EP 2513490 A1 EP2513490 A1 EP 2513490A1
Authority
EP
European Patent Office
Prior art keywords
fluid
time
variable
pressure
machine
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
EP10787317A
Other languages
German (de)
English (en)
Other versions
EP2513490B1 (fr
Inventor
Thomas Gellner
Bernd Siegler
Günther LANDGRAF
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2513490A1 publication Critical patent/EP2513490A1/fr
Application granted granted Critical
Publication of EP2513490B1 publication Critical patent/EP2513490B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
    • 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
    • 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
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • 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
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/25—Pressure control functions
    • F15B2211/251—High pressure control
    • 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
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6651—Control of the prime mover, e.g. control of the output torque or rotational speed

Definitions

  • the present invention relates to a method for operating a hydraulic motor
  • Machine tools the invention is not limited to these, but rather in all types of work machines can be used, in which a
  • variable-z. with time changing fluid pressure and / or volume flow (also referred to more generally below as fluid requirement) is needed.
  • the invention can be realized in hydraulic systems.
  • Electromechanical systems can therefore be more energy efficient; However, flexible processes with high process forces and a high power density can be realized less electromechanically.
  • a hybrid approach can be followed using, for example, Variable Speed Pump Drives (DvP).
  • DvP Variable Speed Pump Drives
  • a pump is used with a standard asynchronous motor or a synchronous servo motor and a fixed displacement pump, the energy supply depending on
  • the need to be adjusted For example, by a drive controller, the need to be adjusted.
  • the inventive solution includes a control of the fluid device by a control device of the working machine, in particular by a programmable logic controller, make.
  • Working machine can be operated by smaller, more energy-efficient and less powerful pumps. Such less powerful pumps can be driving without overload for a short time in overload mode to meet peak demands. As a consequence, for example, by the solution according to the invention Reduced noise emissions and an electrical energy saving potential can be realized. Furthermore, for example, cooling devices that naturally have to correlate their conductivity directly with the performance of the fluid device can be made smaller and less powerful. If necessary, can on a
  • Hydraulic systems also realize a significantly lower heat input into the hydraulic oil and thus less wear.
  • a variable-speed pump can be operated in partial load operation.
  • a drive controller reduces the speed of the electric motor and the pump.
  • the energy consumption, the hydraulic loss line introduced into the oil and the noise emissions decrease.
  • the drive controller adjusts the speed as needed.
  • the inventive method can be the use of highly dynamic
  • Servo motors include, which provide the required torque at a very short acceleration time at any time.
  • a drive controller which is assigned to this highly dynamic servomotor, decentralized setpoints and actual values are processed and analyzed.
  • a pressure cell can report the actual values to the inverter, which regulates the requested speed accordingly and forwards it to a constant pump.
  • Parameterized software can take hydraulic-specific control strategies into account. For example, the software can compensate for nonlinearities typical of hydraulics.
  • a standard asynchronous motor can be provided to provide the drive function.
  • a dynamic inverter can be used to control the speed of this motor.
  • FIG. 1 shows a diagram for illustrating time-variable fluid requirements and the provision of time-varying fluid pressures and / or volume flows in the prior art.
  • Figure 2 shows a schematic representation of a working machine according to a particularly preferred embodiment of the invention.
  • FIG. 3 shows a diagram for illustrating time-variable fluid requirements and the provision of time-variable fluid pressures and / or volume flows according to a particularly preferred embodiment of the invention.
  • FIG. 1 shows the operation of fluid requirements in the prior art by means of a diagram 100 by providing a time-variable fluid volume flow 30 at constant-time fluid pressure 40.
  • the diagram 100 is on an x-axis 10th a time in seconds, a fluid volume flow in liters / minute on a first y-axis 20 and a fluid pressure in bar on a second y-axis 21.
  • Diagram 100 illustrates a processing cycle completed within 60 seconds.
  • the machine cycle illustrated in diagram 100 includes, for example, three hydraulic functions 51, 52 and 53, each with a different fluid requirement.
  • a first function 51 that is to be executed three times is one
  • Tool clamping function with a pressure requirement of 100 bar at a flow rate of 15 l / min. Operation of function 51 results in the last three peaks 32 of one second each in fluid flow 30.
  • a clamping pressure for a workpiece in a chuck of the working machine with a pressure requirement of 50 bar with a permanent
  • a third function 53 is a two-time clamping (open / close) of a workpiece with a pressure requirement of 50 bar at a flow rate of 15 l / min done.
  • the operation of function 53 results in the first two peak values 32 of one second each in fluid flow 30.
  • Non-variable speed pumps always set the power of a given hydraulic unit to the maximum pressure / flow rate in order to meet the peak requirements, in this case the maximum value of 100 bar at 20 l / min.
  • a working machine is shown which has a hydraulic consumer 202, in particular a consumer with time variables
  • Control device 203 has.
  • FIG. 200 Although only one hydraulic consumer 202 is illustrated in FIG. 200, it should be understood that the present invention may be implemented particularly in systems having multiple hydraulic consumers 202.
  • the control device 203 is assigned to the working machine and controls the
  • the control device 203 therefore has detailed information about the program running in the work machine and thus about the sequence and times of the individual fluid requirements and their temporal variability. With particular advantage, therefore, the control device 203, for example via control means 242, for a control or control of
  • Fluid device 201 may be used.
  • the fluid device 201 has a control system 220.
  • the control system 220 interacts with a pump 230, such as a fixed displacement pump 230.
  • the pump 230 is connected via a clutch 233 to a controllable electric motor 231 which, as previously explained, may be provided as an asynchronous motor or servomotor.
  • the control of the electric motor 231 via other control means 243. on.
  • a cooling device 232 is provided. It should be emphasized that, in particular due to the measures according to the invention, this cooling device 232 may also be dispensed with.
  • Frequency converter 240 has an input 241 via which an actual value of a
  • Pressure cell 250 can be provided.
  • the fluid device 201 further has a pressure control system 270, which is designed for example in a conventional manner.
  • the pump 230 delivers fluid, for example hydraulic oil, via a line 262 from a fluid reservoir 260 and provides this after passing through the pump 230 to the hydraulic consumer 202 at a pressure ready.
  • a check valve 263 is provided in a pressure line P. Excess fluid is returned to the fluid reservoir 260 via a return line 261.
  • FIG. 3 shows in a diagram 300 the time-variable fluid pressure 40 resulting from the operation of time-variable fluid requirements of one or more hydraulic consumers in accordance with an embodiment of the invention in the case of time-variable fluid volume flow 30.
  • the machine cycle on which the diagram 300 is based also contains the three hydraulic functions 51, 52 and 53, each with a different fluid requirement.
  • the same elements are designated by the same reference numerals and will not be explained again at this point.
  • the time profile of the volume flow 30 corresponds in diagram 300 to that of
  • Diagram 100 i. There is a temporal change between a basic requirement 31 and a peak requirement 32.
  • FIG. 3 further illustrates how, with the use of the measures according to the invention, a demand-oriented adaptation to fluid requirements of a work machine by means of activation of a hydraulic unit by means of a
  • Control means e.g. the control device 203 of Figure 2, the machine can be done.
  • a fluid pressure of 50 bar is provided in the periods designated by 41 in order to supply both the
  • corresponding fluid device can be adapted with particular advantage leading to a fluid requirement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un procédé permettant de faire fonctionner une machine de travail hydraulique, en particulier une machine-outil, présentant un dispositif de commande associé pour la commande séquentielle de la machine de travail, un système hydraulique présentant au moins un consommateur hydraulique dont les besoins en fluide (51, 52, 53) sont variables dans le temps, ainsi qu'au moins un dispositif de fluide permettant de fournir une pression de fluide (40') et un débit volumétrique de fluide (30) permettant de répondre aux besoins en fluide variables dans le temps (51, 52, 53). Le ou les dispositifs de fluide comprennent une pompe à vitesse de rotation variable, une pression de fluide variable dans le temps (40') étant fournie pour répondre aux besoins en fluide variables dans le temps (51, 52, 53), suivant les instructions du dispositif de commande, au moyen d'un réglage variable dans le temps de la vitesse de rotation de la pompe à vitesse de rotation variable.
EP10787317.6A 2009-12-18 2010-12-03 Méthode d'exploitation d'une machine hydraulique Active EP2513490B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910059025 DE102009059025A1 (de) 2009-12-18 2009-12-18 Verfahren zum Betrieb einer hydraulischen Arbeitsmaschine
PCT/EP2010/007343 WO2011072808A1 (fr) 2009-12-18 2010-12-03 Procédé permettant de faire fonctionner une machine de travail hydraulique

Publications (2)

Publication Number Publication Date
EP2513490A1 true EP2513490A1 (fr) 2012-10-24
EP2513490B1 EP2513490B1 (fr) 2016-09-28

Family

ID=43608698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10787317.6A Active EP2513490B1 (fr) 2009-12-18 2010-12-03 Méthode d'exploitation d'une machine hydraulique

Country Status (5)

Country Link
EP (1) EP2513490B1 (fr)
CN (1) CN102782337B (fr)
DE (1) DE102009059025A1 (fr)
PL (1) PL2513490T3 (fr)
WO (1) WO2011072808A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5486633B2 (ja) * 2012-04-17 2014-05-07 住友ゴム工業株式会社 タイヤ加硫機の油圧システム
DE102012104125A1 (de) * 2012-05-10 2013-11-14 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren zum Betreiben einer hydraulischen Presse und eine hydraulische Presse
DE102013212004A1 (de) * 2013-06-25 2015-01-08 Robert Bosch Gmbh Hydraulische Anordnung und Verfahren zu deren Steuerung
AT524485B1 (de) * 2020-12-10 2022-07-15 Engel Austria Gmbh Hydrauliksystem für eine zyklisch arbeitende Formgebungsmaschine und Verfahren zum Betreiben eines solchen Hydrauliksystems
DE102021200407A1 (de) 2021-01-18 2022-07-21 Zf Friedrichshafen Ag Hydraulikvorrichtung für ein elektrifiziertes Nutzfahrzeug, Steuereinrichtung für eine Hydraulikvorrichtung und Verfahren zum Betreiben einer Hydraulikvorrichtung

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Publication number Priority date Publication date Assignee Title
DE4335403C1 (de) * 1993-10-18 1994-12-15 Karl Hehl Hydraulikeinrichtung
BE1009184A6 (fr) * 1995-03-09 1996-12-03 Techno Assistance Et Services Systeme de regulation d'un generateur de pression hydraulique.
DE19524395C1 (de) * 1995-07-04 1996-10-10 Battenfeld Gmbh Hydraulisches Betriebssystem für Kunststoffverarbeitungsmaschinen, insbesondere für Spritzgießmaschinen
DE10031892A1 (de) * 2000-06-30 2002-01-10 Bosch Gmbh Robert Verfahren zur Steuerung der Geschwindigkeit eines elektrohydraulischen Hubantriebs
DE10110398A1 (de) * 2001-03-03 2002-09-26 Mannesmann Rexroth Ag Verfahren zur Regelung der Druckmittelzufuhr zu einem hydraulisch betätigten Aktor
US7281918B2 (en) * 2004-12-15 2007-10-16 Hsiao Ting Lu Injection molding system
JP4916121B2 (ja) * 2005-03-24 2012-04-11 コマツ産機株式会社 油圧式加工機械、油圧式プレスブレーキおよびその制御方法
DE102006041041B4 (de) * 2005-09-08 2008-07-17 Smc K.K. Verfahren zur Steuerung der Betätigung einer Zylindervorrichtung
JP4425253B2 (ja) * 2006-08-30 2010-03-03 ダイキン工業株式会社 油圧ユニットおよび油圧ユニットにおけるモータの速度制御方法
DE102007007005B4 (de) * 2007-02-08 2021-12-02 Robert Bosch Gmbh Elektrohydraulische Steueranordnung

Non-Patent Citations (1)

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Title
See references of WO2011072808A1 *

Also Published As

Publication number Publication date
DE102009059025A1 (de) 2011-06-22
CN102782337B (zh) 2016-11-09
WO2011072808A1 (fr) 2011-06-23
PL2513490T3 (pl) 2017-03-31
CN102782337A (zh) 2012-11-14
EP2513490B1 (fr) 2016-09-28

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