EP2554363A1 - Entraînement électrique pour une presse - Google Patents

Entraînement électrique pour une presse Download PDF

Info

Publication number
EP2554363A1
EP2554363A1 EP11176293A EP11176293A EP2554363A1 EP 2554363 A1 EP2554363 A1 EP 2554363A1 EP 11176293 A EP11176293 A EP 11176293A EP 11176293 A EP11176293 A EP 11176293A EP 2554363 A1 EP2554363 A1 EP 2554363A1
Authority
EP
European Patent Office
Prior art keywords
motor
press
drive
eccentric shaft
segment
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
EP11176293A
Other languages
German (de)
English (en)
Other versions
EP2554363B1 (fr
Inventor
Mike Fokken
Thilo Sporbert
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.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Priority to EP11176293.6A priority Critical patent/EP2554363B1/fr
Priority to CN201210265465.0A priority patent/CN102909874B/zh
Publication of EP2554363A1 publication Critical patent/EP2554363A1/fr
Application granted granted Critical
Publication of EP2554363B1 publication Critical patent/EP2554363B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/266—Drive systems for the cam, eccentric or crank axis

Definitions

  • the invention is in the field of forming technology and relates to an electric drive for a press. Moreover, the invention relates to a press with such a drive.
  • the drive has a first motor, which preferably acts directly, ie directly and without gear ratio, on the drive train of the press, as well as a second motor acting directly on the drive train, wherein this second motor is a segment motor equipped only partially is.
  • the first motor which is also referred to below as a press motor
  • the first motor can also act on the drive train via a gear stage.
  • the second engine which is also referred to below as an additional motor is a teilbe Publishingter segment motor, which acts as a direct drive, ie directly on the drive train.
  • the invention is based on the consideration that in a certain forming area (working area) for applying the forming forces, an increased torque is required.
  • This forming area in which the pressing forces applied by the press lead to changes in shape on the workpiece, is driven through slowly anyway, so that no highly dynamic plunger movements are necessary for this area.
  • Servo presses are typically around 30 ° before UT (bottom dead center).
  • a key idea of the invention is now to maintain the already existing press motor as a drive motor, and to use a specially adapted to the forming area additional motor.
  • the main features of these two engines are explained below.
  • the press motor serves, if at all, only to provide a comparatively small part of the required pressing force. Instead, depending on the design, it serves exclusively or essentially to accelerate the shock during the restart after the forming process. Before reaching the forming area again, the press motor slows down the ram and then slowly traverses the forming area. By such a highly dynamic movement of the plunger between the forming areas a high productivity of the press is ensured.
  • the press motor can be smaller than previously customary dimensioned.
  • a cost-optimized winding variant can be selected.
  • the additional motor is used exclusively for applying additional forces to generate the required pressing force. He intervenes when the forming process begins, that is after the deceleration of the plunger.
  • the auxiliary motor is energized only during the forming and then serves to support the press motor. To the movement of the plunger between the Umformbrugs contributes the auxiliary motor, depending on the design, not or only insignificantly.
  • the additionally used segment motor is not fully populated. This means, for example, in the case of a radial segment motor that it is not equipped over the entire circumference of its rotor (360 °).
  • the part assembly concerns both the windings or coils (primary part) and the permanent magnets (secondary part) of the motor.
  • the auxiliary motor is wound only in a partial area and provided with magnets.
  • This partial area preferably corresponds to the deformation area, that is to say for example a range of 30 °.
  • the size of the populated partial area is adapted to the size of the working area. This avoids unnecessary assembly of the segment motor beyond the working range.
  • a press drive in which pressing force and dynamics are combined with each other in an optimal manner.
  • the number of different engines to be kept ready can be reduced since the same press motors can always be used. Changing demands for higher torques can be achieved by a higher population of the additional motor.
  • the assembled section of the segment motor does not have to be a closed section.
  • two opposing segments of the additional motor are equipped, in other words, the populated segments are arranged on the rotor offset by 180 ° to each other.
  • a counterweight is attached to avoid an imbalance on the opposite side of the rotor.
  • the invention is not limited to drives for presses with servo drive technology. It can also be used for drives of other presses. Also on the number of motors used is not important. Thus, instead of a press motor and several press motors and / or several auxiliary motors can be used instead of an additional motor. Also, the invention is not limited to radial segment motors limited, but can also be realized when using other segment motors. In addition, the invention is also independent of the operation of the motors used. For example, it is irrelevant to the invention whether an internal rotor or external rotor arrangement is selected.
  • the invention will be explained by way of example with reference to an eccentric press which generates the pressing force with the aid of an eccentric shaft.
  • the drive train 1 a servo press with eccentric shaft 2, connecting rod 3 and plunger 4.
  • a press motor 5 is connected via a gear stage 6 with a low gear ratio with the eccentric shaft 2.
  • an auxiliary motor 7 is connected directly to the eccentric shaft 2.
  • the auxiliary motor 7 is designed as an electric direct drive with an immediate effect on the drive train. Transmission gears, gears or the like are not used.
  • the press motor 5 is a comparatively small dimensioned torque motor.
  • the auxiliary motor 7 is a radial segment motor.
  • the auxiliary motor 7 comprises a partially populated coil system (primary part) and a partially loaded permanent magnet system (secondary part) cooperating with the coil system.
  • the coils 8 and the permanent magnets 9 are combined into groups and thereby arranged in segments.
  • the coils 8 can be controlled separately in segments.
  • FIG. 2 shown is the time in which the auxiliary motor 7 is energized.
  • Primary and secondary parts 8, 9 overlap congruently in a forming area 11 of about 30 ° before UT.
  • two populated segments 12, 13 are used.
  • the segments are offset by 180 ° to each other, so that they are opposite each other. As a result, an imbalance of the rotor is avoided.
  • the required pressing force is applied by means of the additional motor 7. Subsequently, the press motor 5 is used to accelerate the plunger 4 again and decelerate before the next forming process. Then a renewed slow driving through the forming area 11 takes place.
  • press motors for example, several press motors, auxiliary motors and / or eccentrics are used, although in the figures, only one press motor and an additional motor are shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Press Drives And Press Lines (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
EP11176293.6A 2011-08-02 2011-08-02 Entraînement électrique pour une presse Not-in-force EP2554363B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11176293.6A EP2554363B1 (fr) 2011-08-02 2011-08-02 Entraînement électrique pour une presse
CN201210265465.0A CN102909874B (zh) 2011-08-02 2012-07-27 用于压力机的电驱动装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11176293.6A EP2554363B1 (fr) 2011-08-02 2011-08-02 Entraînement électrique pour une presse

Publications (2)

Publication Number Publication Date
EP2554363A1 true EP2554363A1 (fr) 2013-02-06
EP2554363B1 EP2554363B1 (fr) 2016-09-28

Family

ID=45374421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11176293.6A Not-in-force EP2554363B1 (fr) 2011-08-02 2011-08-02 Entraînement électrique pour une presse

Country Status (2)

Country Link
EP (1) EP2554363B1 (fr)
CN (1) CN102909874B (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1453384A (en) * 1974-10-17 1976-10-20 Mo Avtomekh Inst Crank press drives systems
EP1541330A1 (fr) * 2002-06-18 2005-06-15 Amada Company, Ltd. Systeme d'entrainement asservi et systeme de finissage en continu pour presse
WO2005071817A1 (fr) * 2004-01-23 2005-08-04 Heinz Leiber Moteur segmente
WO2008087130A1 (fr) * 2007-01-18 2008-07-24 Siemens Aktiengesellschaft Mécanisme d'entraînement en rotation pourvu de segments de partie primaire droits
DE102009032231A1 (de) * 2009-07-08 2011-01-13 Schuler Pressen Gmbh & Co. Kg Direktantrieb für hin und her gehende Bewegung
DE102010031100A1 (de) * 2010-07-08 2011-02-24 Raster-Zeulenroda Werkzeugmaschinen Gmbh Umformpresse mit einem Direktantrieb mittels Segmentmotoren
DE102009051939A1 (de) * 2009-11-04 2011-05-05 Dieffenbacher Gmbh + Co. Kg Presse mit einem direkt angetriebenen Kurbeltrieb, Pressenstraße aus derartigen Pressen und ein Verfahren zur Herstellung einer Presse mit zumindest einem Direktantrieb.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2638974Y (zh) * 2003-08-04 2004-09-08 银川西部大森数控技术有限公司 数控压力机
CN2855721Y (zh) * 2006-01-23 2007-01-10 许晓华 一种电动压机

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1453384A (en) * 1974-10-17 1976-10-20 Mo Avtomekh Inst Crank press drives systems
EP1541330A1 (fr) * 2002-06-18 2005-06-15 Amada Company, Ltd. Systeme d'entrainement asservi et systeme de finissage en continu pour presse
WO2005071817A1 (fr) * 2004-01-23 2005-08-04 Heinz Leiber Moteur segmente
WO2008087130A1 (fr) * 2007-01-18 2008-07-24 Siemens Aktiengesellschaft Mécanisme d'entraînement en rotation pourvu de segments de partie primaire droits
DE102009032231A1 (de) * 2009-07-08 2011-01-13 Schuler Pressen Gmbh & Co. Kg Direktantrieb für hin und her gehende Bewegung
DE102009051939A1 (de) * 2009-11-04 2011-05-05 Dieffenbacher Gmbh + Co. Kg Presse mit einem direkt angetriebenen Kurbeltrieb, Pressenstraße aus derartigen Pressen und ein Verfahren zur Herstellung einer Presse mit zumindest einem Direktantrieb.
DE102010031100A1 (de) * 2010-07-08 2011-02-24 Raster-Zeulenroda Werkzeugmaschinen Gmbh Umformpresse mit einem Direktantrieb mittels Segmentmotoren

Also Published As

Publication number Publication date
CN102909874A (zh) 2013-02-06
CN102909874B (zh) 2016-12-28
EP2554363B1 (fr) 2016-09-28

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