WO2008064669A2 - Dispositif de coussin hydraulique à entraînement hybride - Google Patents

Dispositif de coussin hydraulique à entraînement hybride Download PDF

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Publication number
WO2008064669A2
WO2008064669A2 PCT/DE2007/002167 DE2007002167W WO2008064669A2 WO 2008064669 A2 WO2008064669 A2 WO 2008064669A2 DE 2007002167 W DE2007002167 W DE 2007002167W WO 2008064669 A2 WO2008064669 A2 WO 2008064669A2
Authority
WO
WIPO (PCT)
Prior art keywords
die cushion
drive
cushion device
modules
piston rod
Prior art date
Application number
PCT/DE2007/002167
Other languages
German (de)
English (en)
Other versions
WO2008064669A3 (fr
Inventor
Markus Müller
Original Assignee
Müller Weingarten 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 Müller Weingarten AG filed Critical Müller Weingarten AG
Priority to DE502007003635T priority Critical patent/DE502007003635D1/de
Priority to AT07856049T priority patent/ATE465826T1/de
Priority to CN200780043901.7A priority patent/CN101594946B/zh
Priority to EP07856049A priority patent/EP2104578B1/fr
Publication of WO2008064669A2 publication Critical patent/WO2008064669A2/fr
Publication of WO2008064669A3 publication Critical patent/WO2008064669A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/02—Die-cushions

Definitions

  • the invention relates to a die cushion device which, in combination of fluid and electric drive, is designed as a module and can be adapted as a drawing device in a press by the use of one or more modules on different part geometries.
  • hydraulic drawing devices are used to pull blanks, which are arranged in the press table and apply a defined force to the blank holder via press plates movable in the press table and via pressure pins, which presses the edge of the drawn part against the upper tool.
  • Complicated and large-scale drawn parts require a different force setting via the drawing part edge.
  • a drawing device which consists of a plurality of independently acting pressure cylinders and each pressure cylinder is associated with a pressure cheek, which applies an individually adjustable force on the blank holder and drawing edge.
  • the disadvantage here is the high control and control effort, which must be operated in particular for the synchronization during pre-acceleration and elevation and for the safety-oriented locking of the drawing device.
  • the use of complex hydraulic controls also requires the operator to have specially trained personnel for the maintenance and service of the die cushion device.
  • die cushion devices have been known which use only electric drives to control the cushion movements and to apply the counterforce force.
  • a compromise of high power density, an essential advantage of the hydraulic drive systems and a good maintainability and good controllability, a special property of the electric drives, are hybrid systems, as in WO 2006/000188 Al has become known.
  • hydraulically acting displacement cylinder take over the application of the counter-holding force during the drawing process and at least one electric cylinder, the control and regulation of the cushion movements outside the power flow with the press drive.
  • this hybrid-type die-cushion device only permits a limited design in the form of a module to a limited extent, since the two drive forms are not concentrated in one axis.
  • the previously known electrically driven die cushion devices with respect to the hydraulic die cushion do not have sufficient overload protection.
  • the electric drive is not able to correct a larger existing speed difference in the time of impact of the press ram on the die cushion device so that high accelerations on the inertia of the force act transmission mechanism and destroy it by high resulting forces.
  • Pneumatic drawing cushions have also been used for some time in forming technology.
  • pneumatic cylinders are located in the area of the press table. These pneumatic cylinders usually act on a pressure cheek and pressure pins on a blank holder.
  • the pressure chambers of the pneumatic cylinder are usually connected to a large-volume accumulator, which reduces the pressure increase to the lower reversal point.
  • the type of pneumatic cushions are closed systems and have no power control but no further control options. They are displaced by the press ram and immediately follow it in the downward movement, the force in the downward movement being equal to the force in the upward movement.
  • nitrogen cylinders are sometimes used in forming technology.
  • Nitro-Dyne gas spring system instead of steel springs, strips, sheets, tubes 11-1974
  • the applications of such nitrogen cylinders are described.
  • the nitrogen cylinder act similar to a mechanical spring, but offer some advantages, for example, acts in nitrogen springs
  • the force increase over the spring travel of a nitrogen spring is much lower than with conventional springs.
  • Yet advantage of nitrogen springs is the very high power density Forming technology used nitrogen cylinders there are different types.
  • piston and piston rod form one unit. The seal happens here on the piston. There is a scraper on the piston rod. The upper chamber is thus vented to the atmosphere.
  • the single-chamber system is characterized by a short stroke and a progressive force curve.
  • a tank system When such a system is connected to an external storage volume, it is referred to as a tank system.
  • a tank system In a tank system, it is possible to adapt the force increase of the spring over the spring travel to the requirements.
  • the invention is based on the object, starting from the prior art, to improve a die cushion device with hybrid drive such that for one of the drives a safe and easy-built overload protection is given and further that the space required for a single die cushion module is reduced ,
  • the first drive and the second drive form a die cushion module
  • the die cushion module comprises a component, by means of which the sinker holder of at least one of the drives with a lifting movement is movable upwards or with a lowering movement downwardly, while a a pulling operation of the upper tool on the component transferable, downwardly directed, a Niederfahrterrorism causing compressive force to avoid overstressing the second drive only by the first drive blockable or braked and wherein the component is decoupled from the second drive in the downward movement down.
  • the core of the invention is to integrate the second drive in the hybrid drive, that this can meet without any impairment of its tasks, in particular a sensitive control and regulation of a lifting movement of the board holder, but of forces or movements with which the upper tool on the board holder also acts on the hybrid drive or the die cushion module is decoupled.
  • Such a decoupling is achieved mechanically by a freewheel acting in a direction of movement between the second drive and the component which is directly or indirectly tucked with the sinker holder.
  • the freewheel protects the second drive from overloading, as this is caused by a
  • Utilization of the freewheeling function can not be transmitted to the second drive.
  • the invention provides, in particular, using the hybrid principle, the electric drive with his
  • the electric drive which is also referred to as a second drive
  • no immediate or no all forces and movements transmitting connection to the board holder or the pressure cheek has and at the moment of impact of the press ram on the board holder and disengaged in the event of an overload.
  • the electric drive preferably acts on a collar of the piston rod of the hydraulic cylinder via a ball or roller screw drive.
  • the hydraulic system consisting of cylinder, arranged on the outlet side proportional valve and pressure sensor, and arranged on the inlet side check valve and low-pressure accumulator, active and counteracts with a defined force the plunger.
  • the force is applied by a cylinder-controlled pressure acting on the piston surface.
  • the pressure is generated passively by oil displacement against a proportional valve.
  • the electric drive follows the piston rod and does not necessarily have to be in operative connection with it.
  • the overload protection is common as with hydraulic drawing cushion, given by a further discharge side arranged pressure relief valve.
  • the dimensioning of the electric drive also depends on the value of the resulting force i. a. approx. 10% to 20% of the nominal force of the cylinder. This is a further advantage in order to reduce the space compared to purely electrically driven die cushion devices.
  • the lower required nominal force of the electric drive allows a more favorable dimensioning of the power transmission elements, leads to lower mass moment of inertia, to a better dynamics of the drive and at the same time reduces the heat development.
  • the strict division of tasks of hydraulic and electrical system, the known advantages of a hybrid drive arise: the generation of pulling force required for pulling done by the hydraulic system with its high power density and its compact design and not executed in contact with the press ram movements of the die cushion device by run the simpler electric drive. It accounts z. As the additionally required safety valves in the hydraulic system, as dangerous movements can be safely prevented by the electric drive with simpler means.
  • the invention also provides for the first drive to use a nitrogen cylinder instead of a hydraulic cylinder or a mechanical cylinder.
  • a nitrogen cushion module is produced, consisting of an electric drive and a nitrogen cylinder, which acts like a spring during the forming process.
  • the amount of nitrogen in the cylinder during the operation of the nitrogen pad module remains constant, since the cylinder can be decoupled from the nitrogen supply during operation.
  • the nitrogen supply system consisting essentially of a high-pressure accumulator, a low pressure accumulator and a pressure booster, serves for presetting a spring force by filling or discharging nitrogen outside of the operation.
  • Nitrogen cushion module can still be operated regulated.
  • the control is effected by a superimposition of the nitrogen spring force and a force resulting from the electric drive.
  • the electric drive can generate a force which counteracts the nitrogen spring force.
  • the effective force is thus reduced during the drawing process by the electric drive.
  • a braking effect can be achieved by the electric drive. Due to the generator operation of the
  • Fig. 1 Press with die cushion device
  • Fig. 2 Basic structure of a die cushion module
  • FIG. 3 movement cycle of the die cushion device
  • Fig. 4 Basic structure of another die cushion module
  • FIGS. 5, 6 detailed representations of the one shown in FIG.
  • FIG. 1 shows the schematic structure of a forming press 51 for drawing large-area parts 10, which are designed, for example, as blanks 53 made of plastic or sheet metal.
  • the press has a mechanical drive 1, which moves the plunger 2 with upper tool 3 up and down.
  • the press table 8 is a
  • Ziehkissenvorraum 50 arranged with hybrid drives 52, which consists of a press table 8 vertically displaceable pressure cheek 7 and several die cushion modules 9 and hybrid drives 52. Stand on the pressure cheek 7
  • the hydraulic system consists of a plunger cylinder or plunger cylinder 11 designed as a hydraulic cylinder with a piston rod 12 with splined shaft profile 13, a displacement measuring system 32 arranged on the bottom side and the proportional valve 21, pressure limiting valve 22 and pressure transmitter 23 arranged in the drainage line 24 the check valves 27 and 29 located in the supply line 30, the piston accumulator 28 and a pump 26 with a valve for pressure limiting 31.
  • the hydraulic cylinder 12 forms a first drive.
  • An electric drive 14, which forms a second drive includes a rotor 15 configured as a hollow shaft and optionally a spring-pressure safety brake 16.
  • a transmission for converting the rotational movement of the rotor 15 into a lifting and lowering movement of the piston rod 12 is a ball screw consisting of hollow Spindle 18 which is positively connected to the piston rod 12 and the spindle nut 17 which is fixedly connected to the rotor 15. About the collar 19 of the piston rod 12, the spindle 18 is in its downward movement with its collar 55 positively connected to the piston rod 12 in connection.
  • An anti-rotation device 20 connected to the housing of the hollow shaft or torque motor 14 fixes the piston rod 13 via the splined shaft profile and thus allows the translation of a rotational movement in a translational movement.
  • the pump 26 fills the piston accumulator 28 via a check valve 27 with hydraulic oil to a pressure value which corresponds to the sum of maximum possible mass and flow forces and the required force for lifting the drawn part 10 from the contour of the tool 5 ünterwerkmaschines. Excess pressure oil is z. B. returned to the tank via a pressure relief valve 31. At higher pressures, it will be used for energy reasons at this point a valve for accumulator charge control.
  • a check valve 29 connects the piston accumulator 28 with the supply line 30 of the cylinder 11 and prevents a return flow from the cylinder.
  • the electric drive is driven such that the piston rod can be moved to the desired position.
  • An arranged on the cylinder bottom displacement measuring system 32 detects the movement of the piston rod directly and supplies the actual value to the controller.
  • the hydraulic drive supplies the required energy.
  • the position is generally determined by the electric drive.
  • the proportional valve 21 remains closed.
  • the electric drive provides the kinetic energy and positions the piston rod as long as the plunger has not come into contact with the board holder. In this case, the proportional valve 21 must release the outflow from the cylinder.
  • the pressure in the cylinder is regulated to a value above the accumulator pressure.
  • the pressure transducer 23 provides the required actual pressure value.
  • a pressure-limiting valve 22 arranged on the outlet side prevents overloading of the cylinder and of the mechanical power transmission elements.
  • FIG. 3 describes a complete cycle of movement of the hybrid-type die-cushion device.
  • the electric drive assumes the positioning of the die cushion device. This preferably takes place synchronously with the movement of the plunger, in that corresponding to the torque motor or the hollow shaft motor corresponding position desired values are specified as a function of the crank angle of the press drive.
  • the electric drive of the piston rod runs, which is driven in this section by the plunger. This can be done by limiting the motor current or the torque to stay in contact with the piston rod with little force or by using another displacement measuring system which detects the position of the spindle. By comparing both position values, the spindle can be tracked without contact at a small distance.
  • the electric drive again takes over the guidance of the cushion movements and raises, for B.
  • the pressure cheek of the die cushion device delays to the plunger movement by a certain amount to allow transfer devices to remove the drawn part and then brings the die cushion device back to the starting position.
  • the padding operation is a special case, wherein the first portion of the run-up movement of the die cushion device takes place in contact with the plunger until the beginning of the braking phase.
  • the piston rods can create with the force of the hydraulic system against the board holder and plunger, the electric drive is performed with respect to the displacement measuring system of the plunger with a small distance above the collar 19 until the braking phase begins.
  • FIG. 4 shows the basic structure of a further die cushion module 101 according to the invention.
  • the die cushion module 101 essentially consists of two parts, namely the electric drive 102, which is also generally referred to as the second drive, and a spring 103, which is generally referred to as the first drive.
  • the spring 103 is preferably designed as a nitrogen cylinder, wherein the spring force of the spring 103 counteracts the pressing force.
  • the spring force of the nitrogen cylinder 103 can be regulated by filling or discharging nitrogen by means of a nitrogen supply unit 104.
  • This nitrogen supply unit 104 consists of a low-pressure accumulator 105, in which excess nitrogen can be discharged, a high-pressure accumulator 106, from which the nitrogen cylinder 3 can be filled with additional nitrogen, a pressure interrupter 107 connected therebetween and corresponding valve technology.
  • the nitrogen supply unit 104 can be arranged both directly on the nitrogen cylinder 103, as well as outside the press as a separate supply station. In that described in Figure 4
  • the electric drive 102 consists of a hollow shaft motor 108.
  • the gear for converting the rotational movement into a lifting and lowering movement of the piston rod 109 is a ball screw 110, consisting of a hollow spindle 18 which is positively connected to the piston rod 109 and a spindle nut 17th which is fixedly connected to a rotor 15 of the hollow shaft motor 108.
  • About a collar 19 of the piston rod 109 is the spindle 18 with its collar 55 during its downward movement form-fitting manner with the piston rod 109 in connection.
  • An anti-rotation 111 fixes the piston rod 109 via a spline shaft 13 and thus enables the translation of a rotational movement in one Translational motion.
  • the driving force of this translational movement is superimposed by the spring force of the nitrogen cylinder 103.
  • the nitrogen cylinder 103 is a closed system during operation, this superposition can solve all of the prior art control tasks for die cushions known in the art.
  • Figures 5 and 6 show detailed views of the die cushion module 9 shown in Figure 3, which is essentially formed by a hybrid drive 52, in different positions of the piston rod 12 and the hollow spindle 18.
  • the hybrid drive is used in particular the generation and control of a board holding force, with which a drawing part or a board of at least one board holder is pressed during the drawing operation against the upper tool.
  • the piston rod 12 has dropped in FIG. 5 with a lowering movement L in an arrow direction y '.
  • Such a lowering movement L of the piston rod 12, which is also generally referred to as component 12 results, for example, in the course of a drawing operation by a downward movement of the upper tool, which also acts indirectly on the piston rod 12.
  • the lowering movement L of the piston rod 12 along its axis a is independent of a position of the hollow spindle 18 of the electric drive 14.
  • a relative movement between the hollow spindle 18 and the spline 13 of the piston rod 12 is unimpeded, since the hollow spindle 18 on the spline 13th the piston rod 12 in the direction of the axis a can slide up and down unchecked.
  • the hollow spindle 18 is driven by the spindle nut 17 on the spline shaft 13 of the piston rod 12 in y- or y 'direction freely movable, but not with respect to the piston rod 12 about the longitudinal axis a rotatable.
  • the electric drive 14 also possible with its spindle 18, the piston rod 12 of the hydraulic drive formed by the cylinder 11, for example, to correct a struck position in the direction of arrow y 'to press down.
  • the force of the cylinder 11, with which this pushes the piston rod 12 upwards in the direction of arrow y preferably reduced.
  • the piston rod 12 at any time in y 'direction decrease without burdening the electric drive 14 when sinking.
  • the piston rod 12 which is a component 56 of the cylinder 11 which forms the first drive, is also used for the direct or indirect actuation of the board holder by the electric drive 14, which forms the second drive.
  • the invention is not limited to the described and illustrated embodiment. It also includes all expert embodiments within the scope of the inventive idea.
  • a common nitrogen pressure chamber can be used for several cushion modules, wherein a plurality of die cushion modules are connected to the common pressure chamber.
  • This common nitrogen pressure chamber can also be a pressure-tight cavity in the sliding table, this pressure chamber being provided in particular for a supply of several die cushion modules.
  • the invention also provides for arranging the nitrogen supply unit outside the press as set-up station. The invention also provides to control the amount of nitrogen in the nitrogen cylinder.
  • the amount of nitrogen in the nitrogen cylinder 103 not only as
  • Setup process can be changed, but also be regulated during operation.
  • the pressure cheek 7 shown in FIG. 1 can be designed to be split.
  • the die cushion modules 9 of the invention do not act on a common pressure cheek 7, but on individual pressure cheek segments. These segments in turn act on the board holder 4 via one or more pressure bolts 6.
  • the die cushion modules 9 are integrated in the mobile sliding table. That is, the die cushion modules 9 and the associated movement or force transmission means are housed in the sliding table body and at a
  • the invention further provides for the board holder (4) to be designed as a segment-elastic board holder. It is also envisaged that the die cushion modules in one or more
  • the invention provides to realize the electric drive functions of several die cushion modules via suitable motion transmission means of a common drive. It is also provided the hydraulic drive functions of several
  • Cushioning modules via suitable motion transmission means of a common drive to realize. Furthermore, the invention provides to control or regulate the electric drive functions of several die cushion modules individually and / or jointly. According to the invention, it is also provided to control or regulate the hydraulic drive functions of several die cushion modules individually and / or jointly. To increase safety, it is provided to allow by means of a spring-pressure safety brake locking the die cushion device in the upward direction. Finally, it is provided to prevent by means of safety-oriented valves in the discharge line of the cylinder rapid lowering movements of the die cushion device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

L'invention concerne un dispositif de coussin hydraulique (50) pour une presse de formage (51), destiné à créer une force de maintien de platine (F53) entre un outil inférieur (5) et un outil supérieur (3), le dispositif de coussin hydraulique (50) comportant au moins un entraînement hybride (52). L'entraînement hybride (52) agit sur au moins un porte-platine (4) de l'outil inférieur (5) et est constitué par au moins un premier entraînement et au moins un deuxième entraînement. Le premier entraînement et le deuxième entraînement forment un module de coussin hydraulique (9) comportant un composant permettant de déplacer le porte-platine (4) vers le haut ou vers le bas au moyen d'un des entraînements. Une force de pression provoquant un mouvement de déplacement vers le bas, dirigée vers le bas, pouvant être transmise de l'outil supérieur (3) au composant lors du processus de traction, destinée à éviter une surcharge du deuxième entraînement, peut uniquement être bloquée ou freinée par le premier entraînement, et le composant peut être désaccouplé du deuxième entraînement lors du mouvement de déplacement vers le bas, dirigé vers le bas.
PCT/DE2007/002167 2006-11-30 2007-11-30 Dispositif de coussin hydraulique à entraînement hybride WO2008064669A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502007003635T DE502007003635D1 (de) 2006-11-30 2007-11-30 Ziehkissenvorrichtung mit modularem hybridantrieb
AT07856049T ATE465826T1 (de) 2006-11-30 2007-11-30 Ziehkissenvorrichtung mit modularem hybridantrieb
CN200780043901.7A CN101594946B (zh) 2006-11-30 2007-11-30 具有混合驱动装置的拉伸垫装置
EP07856049A EP2104578B1 (fr) 2006-11-30 2007-11-30 Dispositif de coussin hydraulique à entraînement hybride modulaire

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102006057053 2006-11-30
DE102006057053.7 2006-11-30
DE102007016359.4 2007-04-03
DE102007016359 2007-04-03

Publications (2)

Publication Number Publication Date
WO2008064669A2 true WO2008064669A2 (fr) 2008-06-05
WO2008064669A3 WO2008064669A3 (fr) 2008-08-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/002167 WO2008064669A2 (fr) 2006-11-30 2007-11-30 Dispositif de coussin hydraulique à entraînement hybride

Country Status (6)

Country Link
EP (1) EP2104578B1 (fr)
CN (1) CN101594946B (fr)
AT (1) ATE465826T1 (fr)
DE (1) DE502007003635D1 (fr)
ES (1) ES2343700T3 (fr)
WO (1) WO2008064669A2 (fr)

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* Cited by examiner, † Cited by third party
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CN107366656A (zh) * 2017-09-02 2017-11-21 上海魁殊自动化科技有限公司 一种无级闭锁结构及其闭锁柱的制作方法

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CN102166595A (zh) * 2010-12-30 2011-08-31 一重集团大连设计研究院有限公司 可用于压力机拉伸气垫的下限位装置
US20180264533A1 (en) * 2014-10-06 2018-09-20 Tom Thang Stamping Press Bolster Adaptor For Suiting Different Die Binder Pin Patterns
CN104454783A (zh) * 2014-12-24 2015-03-25 济南二机床集团有限公司 压力机单顶冠单主缸纯气式拉伸垫结构
JP6059291B2 (ja) * 2015-06-03 2017-01-11 アイダエンジニアリング株式会社 プレス機械のダイクッション装置
CN105057432B (zh) * 2015-08-31 2017-01-25 西安交通大学 一种交流伺服同步电机驱动行星滚柱丝杠的液压拉伸垫
TWI625176B (zh) * 2017-07-28 2018-06-01 連傑油壓工業股份有限公司 節能液壓成形設備
CN107671164A (zh) * 2017-10-30 2018-02-09 天津普越金属制品有限公司 冲压机反冲底座及其制造工艺
EP3736061A1 (fr) * 2019-05-06 2020-11-11 Lapmaster Wolters GmbH Système de découpage fin et son procédé de fonctionnement
JP2022112954A (ja) * 2021-01-22 2022-08-03 本田技研工業株式会社 ダイクッション装置

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Publication number Priority date Publication date Assignee Title
DE4100716A1 (de) * 1991-01-14 1992-07-16 Erfurt Umformtechnik Gmbh Einrichtung zum blechhalten in einfachwirkenden pressen
WO2006000188A1 (fr) * 2004-06-24 2006-01-05 Müller Weingarten AG Dispositif coussin de serre-flan a entrainement hybride
DE102005028903A1 (de) * 2004-06-18 2006-02-09 Komatsu Ltd. Ziehkissenvorrichtung
DE102006010648A1 (de) * 2005-03-07 2006-09-14 Müller Weingarten AG Ziehkissen-Vorrichtung mit NC-Antrieb und hydraulischem Polster
WO2006094485A1 (fr) * 2005-03-07 2006-09-14 Müller Weingarten AG Ensemble coussin d'emboutissage a entrainement par commande numerique et a coussin hydraulique
WO2006098257A1 (fr) * 2005-03-16 2006-09-21 Komatsu Ltd. Contrôleur d’amortissement de filière

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CN100377866C (zh) * 2003-11-11 2008-04-02 一重集团大连设计研究院 多连杆机械压力机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100716A1 (de) * 1991-01-14 1992-07-16 Erfurt Umformtechnik Gmbh Einrichtung zum blechhalten in einfachwirkenden pressen
DE102005028903A1 (de) * 2004-06-18 2006-02-09 Komatsu Ltd. Ziehkissenvorrichtung
WO2006000188A1 (fr) * 2004-06-24 2006-01-05 Müller Weingarten AG Dispositif coussin de serre-flan a entrainement hybride
DE102006010648A1 (de) * 2005-03-07 2006-09-14 Müller Weingarten AG Ziehkissen-Vorrichtung mit NC-Antrieb und hydraulischem Polster
WO2006094485A1 (fr) * 2005-03-07 2006-09-14 Müller Weingarten AG Ensemble coussin d'emboutissage a entrainement par commande numerique et a coussin hydraulique
WO2006098257A1 (fr) * 2005-03-16 2006-09-21 Komatsu Ltd. Contrôleur d’amortissement de filière

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107366656A (zh) * 2017-09-02 2017-11-21 上海魁殊自动化科技有限公司 一种无级闭锁结构及其闭锁柱的制作方法

Also Published As

Publication number Publication date
DE502007003635D1 (de) 2010-06-10
CN101594946A (zh) 2009-12-02
ATE465826T1 (de) 2010-05-15
ES2343700T3 (es) 2010-08-06
WO2008064669A3 (fr) 2008-08-14
EP2104578A2 (fr) 2009-09-30
CN101594946B (zh) 2013-05-01
EP2104578B1 (fr) 2010-04-28

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