EP2613930A2 - Presse électrique pour poudres métalliques ou céramiques, ainsi que procédé de commande correspondant - Google Patents

Presse électrique pour poudres métalliques ou céramiques, ainsi que procédé de commande correspondant

Info

Publication number
EP2613930A2
EP2613930A2 EP11804926.1A EP11804926A EP2613930A2 EP 2613930 A2 EP2613930 A2 EP 2613930A2 EP 11804926 A EP11804926 A EP 11804926A EP 2613930 A2 EP2613930 A2 EP 2613930A2
Authority
EP
European Patent Office
Prior art keywords
spindle
press
control
stroke
punch
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
EP11804926.1A
Other languages
German (de)
English (en)
Other versions
EP2613930B1 (fr
Inventor
Roland Menzel
Herbert Ludwig GRÖBL
Axel Heinemann
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.)
DORST Technologies GmbH and Co KG
Original Assignee
DORST Technologies GmbH and Co KG
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 DORST Technologies GmbH and Co KG filed Critical DORST Technologies GmbH and Co KG
Publication of EP2613930A2 publication Critical patent/EP2613930A2/fr
Application granted granted Critical
Publication of EP2613930B1 publication Critical patent/EP2613930B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B22F3/03—Press-moulding apparatus therefor
    • 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
    • B30B1/18—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 screw means
    • B30B1/186—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/005—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/14—Control arrangements for mechanically-driven presses

Definitions

  • the invention relates to a metal or
  • press drive is a top-side and a press drive
  • hydraulic or mechanical drives are used to drive such presses.
  • Tool or press die which dips for pressing as a punch in a filled with powder die opening.
  • the traverse follows according to a predetermined nominal path.
  • assemblies having two or more punches which are retracted from above and / or below the die opening are realizable, the individual punches being moved relative to one another at different speeds and / or stroke distances.
  • Adjusting tool components are referred to as axes.
  • a number of graphic drawings corresponding to the number of axes is made in a first step in order to clarify the required sequence of movement of the individual punches relative to a base plane of the press or of the tool.
  • the movements are nominal paths of the stamp or
  • probe hub to determine whether the programming in machine readable program code has been done correctly.
  • effects such as a compression during compression, but also due to the complex movement patterns of the individual axes or stamp relative to each other, often show in this first stroke errors or inaccuracies in the programming and / or
  • Procedure sometimes requires an emergency stop during the first trial strokes. In particular, it can also lead to tool breakages, especially if in sample strokes with
  • stamps used and in the die opening of such a tool filled powder does not occur in time an emergency stop.
  • EP 1 439 949 Bl proceeds from a method for adjusting a ceramic or metal powder press tool in the field of hydraulic and mechanical presses, in which a machine tool control method of a
  • Machine tool programming for parallel control of a variety of controllable tool devices is created, which is on a schedule for a press stroke for a
  • Target or target values for tooling parameters are determined. Subsequently, the tool is used as a probe hub to check the created
  • expected movements with the thus prepared control process in the form of a machine control program for the press and the tool are not performed in the tool, but simulated in advance in a computer device on the basis of the coded for the machine control program as a simulated probe stroke. Only when this step is satisfactory, the sample stroke is carried out with the tool in the press.
  • the object of the invention is to provide a metal or ceramic powder electric press with at least one spindle and a control method therefor, which the
  • a first stroke or sample stroke should be able to be carried out as well as possible in a controllable manner.
  • a metal or ceramic powder electric press or a press tool of such a press is accordingly preferred with a stamping device, which is designed to be pressed into a pressing part for pressing a powder and / or granules in a die by means of at least one stamp - in particular by means of a plurality in the axial direction relative adjustable punch - with at least one spindle device which a spindle and a Spindle, wherein the at least one spindle device, the punch device or relative to each other adjustable components of the stamping device is adjustable depending on the drive direction in or against a pressing direction, with at least one spindle drive, which the spindle or the spindle wheel is arranged drivable, and with a control device, the is configured or programmed, after programming control parameters as a hub stroke or a sample stroke with an interruptible before the end of the first stroke or sample stroke movement of the
  • Control component the hub steplessly stepless, at least in sections.
  • the motion sequence is not just a start or from a predefined stop point to a next
  • the hub is steplessly steerable, at least in sections, means that not necessarily the entire mobile one
  • Movement must be controlled by means of manual operation. It is also possible to have an automatic experience one or more preprogrammed points by means of the control device, to then from such a point one
  • Such a manually operable control component can be designed in a simple manner for transmitting a pulse or other control signal to the control device.
  • the powder and / or granules consists at least
  • Household goods are thus pressable, e.g. Cups and plates.
  • the stamping device can consist in the simplest way of a single stamp, which in the pressing operation, e.g.
  • Stamping device may, according to preferred embodiments, but also have a plurality of punches, which are arranged differently adjustable in a separate framework relative to each other to the pressing operation, for example. to press a gearwheel with several height steps in the pressing direction.
  • the motor shaft e.g. is coupled by means of a front-side screw or by means of a gear with a spindle or a spindle wheel to enable the spindle or the spindle wheel in a rotation.
  • control component and the control device are designed or programmed, with manual actuation of the Control component the stroke gradually to each continue at least one step.
  • control device is
  • stepwise process understandable because all controls clocked at least in parts of the controller and thus performed in at least minimal processing steps.
  • Movement initiation understood independently of the direction of movement.
  • the stroke can be continued at each step a predetermined or predetermined spatial offset amount of a spatial distance of one of the tool components.
  • the stroke can advantageously have a predefinable or predefined time interval at each step
  • Offset amount of a temporal expiration period are continued.
  • the stroke is thus defined depending on the embodiment of a spatial or particularly preferably a temporal measure.
  • a step size of the offset amount can be adjustable by means of a step size input device. This allows, as needed by means of a
  • a mechanical actuator or an electronic Keyboard, such as numeric keypad serve the controller.
  • each of the steps is adjustable.
  • actuable control component an electric or
  • a signal of the control device can be applied, which then a targeted control of the spindle drive by e.g. makes such a predefined step.
  • the control device initiates a movement of the tool components, in particular a single such step. This allows the
  • tool components can be traversed step by step in temporal or spatial steps.
  • the manually operable control component is a mechanical adjusting element, in particular a handwheel.
  • a mechanical adjusting element in particular a handwheel.
  • Such electrical or electronic control element can by means of a handwheel depending on the amount of rotation one pulse or more pulses or corresponding
  • Control signals are output to the control device, wherein the control device then a movement of the adjustable components of the tool by a corresponding number of steps by means of the electric
  • Drive components triggers or controls.
  • Cylinder / piston arrangements are to be converted, u.a.
  • Valves are to be switched differently, in an electric drive by switching a drive direction of the electric drive motors or drive actuators, the adjustment of the tool components can be relatively easily switched to a backward movement and then to a new forward movement.
  • the changeover to the renewed forward movement can, depending on the embodiment, be carried out automatically when the direction signal is not repeated repeatedly or preferably only after the direction signal has been entered again.
  • a step movement distance can in particular be predeterminable within the entire movement distance of the tool components, within which the movement takes place continuously, in particular stepwise.
  • control method which is carried out in a particularly metal or ceramic powder electric press or in a press tool of such a press with a stamping device, wherein the metal or ceramic powder electric press or the
  • Press tool is designed adjustable for pressing a powder and / or granules in a die by means of at least one punch - in particular by means of a plurality in the axial direction relative to each other adjustable punch - to a pressing part with at least one spindle device having a spindle and a spindle wheel, wherein the at least one spindle device, the stamp device or relative to each other adjustable components of
  • Stamping device is designed to be adjustable depending on the drive direction in or against a pressing direction, with at least one spindle drive, which is arranged to drive the spindle or the spindle wheel, and with a
  • Control device that is designed or programmed, after programming control parameters as a hub stroke or a sample stroke with an interruptible before the end of the first stroke, or sample stroke movement of the
  • Tool components from the field of tool making by means of a press, the main press drive is electrically operated, wherein pressing forces not only in force ranges of 50 - 1500 kN, but especially of 10,000 kN, 15,000 kN, 20,000 kW or more achievable at the same time high stroke rates are .
  • Such an arrangement can be used in conjunction with a single main press drive in order to use the
  • Fig. 1 shows schematically various components of a metal or ceramic powder electric press with a drivable for pressing spindle and with a control device and various manual
  • Fig. 2 steps of a preferred spreader method for such a press or such a tool.
  • an exemplary press 1 which is constructed as a metal or ceramic powder electric press, consists essentially of itself
  • a press base 10 supports via guide rods 11 from an upper press structure.
  • a die 13 either fixedly mounted or along the guide rods 11 slidably mounted.
  • the die 13 has a central die opening 14 into which powder or granules to be pressed are pressed into the pressed part.
  • the supplied from a powder container 17 powder is in the
  • Pressing direction down or up is adjustable.
  • the upper-side press drive is designed as a spindle device 20.
  • the one or more lower punch 15 * are attached to a lower punch means or part of a lower punch means, which below the
  • Press frame or press structure be arranged or arranged in an insertable in the press frame adapter, as is known per se.
  • the spindle drive 22 is part of a spindle device and is designed via at least one spindle 21 and at least one spindle wheel 23 of the spindle device 20, the components of the upper
  • the spindle drive 22 is fixed in position with a trained as a carrier 12 upper press frame, the guide rods 11 or any other positionally fixed relative to the environment of the press 1 component.
  • the spindle drive 22 can thus offset the spindle wheel 23 in a rotation ⁇ and about the seated in or on the spindle wheel 23 spindle 21 in a rotationally fixed, lateral, axial movement
  • the components of the upper punch device 16 are adjusted by means of the seated spindle 21 in or counter to the direction of the die opening 14.
  • a spindle drive 22 can also set a spindle in rotation, in which case the spindle is the spindle wheel
  • the press base 10 itself or arranged in this
  • Carrier 12 form a closed frame.
  • a control device C serves to control the press drive 20 such that the adjustable components of the press 1 are controlled and adjusted by suitable amounts and at suitable times.
  • the control device C is programmed for this purpose by means of a machine-readable program, which controls individual drives.
  • Starting time t 0 corresponds to a basic state in which the punches 15, 15 * are pulled out of the die opening 14 in order to fill the die opening 14 with the powder from the powder container 17. After filling the die opening 14, the stamp 15, 15 * along
  • a further movement path which, for example, a movement of a center pin, the die 13 in the case of an adjustable die or other
  • the upper of the punch 15 is stationary for a relatively long time before being moved downwards at a relatively high speed of movement.
  • the punch 15 comes into contact with the powder located in the die opening 14 and begins to press it. From this point in time t n , the speed of movement of the upper punch 15 is reduced, until finally an end pressing force is reached and no further adjustment of the upper one
  • control device C is able to control, for example, a sample stroke or first stroke after programming not only fixed predefined points for an intermediate stop of the movement can.
  • the illustrated embodiment is of the
  • Time t n will thus be the further movement of the
  • Control device C driven. Instead of up to a previously preprogrammed further intermediate point or an end time t end of the further movement sequence of the relatively adjustable components by means of
  • the press 1 has, in addition to the control device C and usually for the operation of existing display and input elements additional input elements or
  • buttons operable buttons, inductive input components or For example, be designed and give currently emerging touch-sensitive display devices
  • a control component for example, a button 24th
  • Design may be the offset amount ⁇ as a
  • spatial offset amount Ah or preferably defined as a time offset amount At.
  • the stepless progression of the movement is preferably continued only up to a time window end point ti, at which time a particularly critical phase of the sample stroke is completed. Thereafter, the controller C takes over the other
  • Manual control of the spindle drive 22 may also include further control components for a stepwise movement from a time t n to a respectively subsequent time t n + i be advantageously provided. Shown is, for example, a direction button 25 as a
  • Control component for inputting a direction signal which adjusts the direction of movement of the spindle drive 22 or the components driven thereby. This makes it possible to manually control a backward movement within the movement, so that
  • Hydraulic cylinders an always defined physical condition of the press and all components also at
  • a handwheel 26 as a rotatable switch as a control component.
  • a rotation ⁇ of the spindle wheel 23 or, in the case of another embodiment of the spindle, by a predefined amount can be performed in one direction by a rotation angle ⁇ of the handwheel 26 in one direction.
  • a backward rotation of the hand wheel 26 in the opposite direction for example, at the same time.
  • Press sequence during the sample stroke but at the same time also allows for a return or backward movement of the components along the predetermined pressing sequence.
  • the step size ⁇ t n -t n + i) is preferably the distance between two smallest possible triggerable times t n , t n + i, but can preferably be to one also during the manual
  • FIG. 2 shows a control method for such a control on the basis of exemplary steps S1-S12.
  • a first step Sl is in a conventional manner
  • a hub is started.
  • a final twelfth step S12 acts in which a manual control is desired. If not, a final twelfth step S12 is advanced, and either a stop or a regular pressing operation is performed.
  • a sample stroke is to be performed manually, in a fourth step S4 an input of data is made which may be necessary for the execution of the manual sample stroke.
  • an input of data is made which may be necessary for the execution of the manual sample stroke.
  • the starting time t 0 , the offset amount, in particular, time offset amount ⁇ t, the first time point t n are input after the start timing of the manual control and the end time t end .
  • a time window end time t i or a pause duration t p can be entered. Then the sample hub starts up to
  • Control signal ss is obtained from one of the control components 24, 26 by the control device C.
  • the control device C automatically moves to the next step after the predetermined pause duration t p has elapsed, with clearly time-delayed movement steps.
  • step S6 it is checked whether an emergency stop is required. If not, in an eighth step S8, the motion sequence until either one end time t end or the next
  • Step S9 interrupted the movement. In both cases, it is preferably checked in a tenth step S10 whether a correction input of control parameters for the
  • correction input is not required, it is checked in an eleventh step Sil, whether the end time t en d the press end position or a pressing process is reached. If not, the next step is started in step S5, from manual input to manual input by the user

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Control Of Presses (AREA)
  • Press Drives And Press Lines (AREA)
  • Powder Metallurgy (AREA)

Abstract

L'invention concerne une presse électrique pour poudres métalliques ou céramiques, ou encore un moule de pressage pour une telle presse, comportant un dispositif de poinçon (16) qui est conçu comme mobile afin de presser une poudre et/ou des granulés dans une matrice (13) à l'aide d'au moins un poinçon pour donner une pièce moulée; au moins un dispositif à broche (20) comprenant une broche (21) et une roue de broche (23), le dispositif à broche (20) déplaçant le dispositif de poinçon (16), suivant la direction d'entraînement, dans la direction de pressage ou à l'inverse; au moins un mécanisme d'entraînement de broche (22) qui entraîne la broche (21) ou la roue de broche (23); et un dispositif de commande (C) qui, après programmation de paramètres de commande, réalise comme course une première course ou course d'essai avec une séquence de déplacement du dispositif à broche et du dispositif de poinçon qui peut être interrompue avant la fin de la première course ou course d'essai. Ce faisant, il est avantageux d'avoir un organe de commande (24, 26) qui peut être actionné manuellement et qui, en liaison avec le dispositif de commande (C), est conçu ou programmé pour commander la course, au moins sur certains tronçons, de manière continue ou pas par pas lorsque l'organe de commande a été actionné manuellement.
EP11804926.1A 2010-09-08 2011-09-08 Presse électrique pour poudres métalliques ou céramiques, ainsi que procédé de commande correspondant Active EP2613930B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010044688A DE102010044688A1 (de) 2010-09-08 2010-09-08 Metall- oder Keramikpulver-Elektropresse und Steuerverfahren dafür
PCT/DE2011/001707 WO2012037925A2 (fr) 2010-09-08 2011-09-08 Presse électrique pour poudres métalliques ou céramiques, ainsi que procédé de commande correspondant

Publications (2)

Publication Number Publication Date
EP2613930A2 true EP2613930A2 (fr) 2013-07-17
EP2613930B1 EP2613930B1 (fr) 2019-07-03

Family

ID=45445667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11804926.1A Active EP2613930B1 (fr) 2010-09-08 2011-09-08 Presse électrique pour poudres métalliques ou céramiques, ainsi que procédé de commande correspondant

Country Status (4)

Country Link
EP (1) EP2613930B1 (fr)
DE (1) DE102010044688A1 (fr)
ES (1) ES2746483T3 (fr)
WO (1) WO2012037925A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102896804B (zh) * 2012-10-31 2015-11-04 南通皋液液压机有限公司 液压机行程控制装置
DE102017119342A1 (de) * 2017-08-24 2019-02-28 COSATEQ GmbH & Co. KG Verfahren zur Steuerung einer Metall- oder Keramikpulverpresse mit automatischer Trajektorien-Generierung
EP4070942A1 (fr) 2021-04-06 2022-10-12 Osterwalder AG Procédé de création et de vérification d'un programme de commande des composants d'une presse à poudre pour plaques multiples à l'aide d'une commande numérique

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Publication number Priority date Publication date Assignee Title
BE791465A (fr) * 1971-11-16 1973-05-16 Upjohn Co Dispositif de prearmement pour pastilleuse
US4463430A (en) * 1981-08-31 1984-07-31 Beta Corporation Microprocessor based pellet mill control
DE3625420A1 (de) 1986-07-28 1988-02-11 Radex Deutschland Ag Vorrichtung zur herstellung keramischer formteile
JP4093379B2 (ja) * 1996-05-21 2008-06-04 蛇の目ミシン工業株式会社 電動プレス
DE19705462C2 (de) * 1997-02-13 2002-01-10 Schmidt Feinmech Verfahren zum Betreiben einer Elektropresse
JP4153097B2 (ja) * 1998-08-14 2008-09-17 株式会社アマダ電子 曲げ加工機における角度出し方法およびその装置
DE10135523C2 (de) 2001-07-20 2003-07-31 Dorst Masch & Anlagen Presseneinrichtung zum Herstellen maßhaltiger Presslinge aus pulverförmigen Metall
DE10151858A1 (de) 2001-10-24 2003-05-08 Dorst Masch & Anlagen Verfahren zum Einstellen bzw. Überwachen eines Pressen-Werkzeugs und Pressen-Werkzeug bzw. Pressen-Steuereinrichtung dafür
JP4932407B2 (ja) * 2006-09-21 2012-05-16 三菱マテリアルテクノ株式会社 粉末成形装置
EP2078604A1 (fr) * 2008-01-10 2009-07-15 Siemens Aktiengesellschaft Elément de commande pour une presse et presse dotée d'un élément de commande

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See references of WO2012037925A2 *

Also Published As

Publication number Publication date
WO2012037925A2 (fr) 2012-03-29
ES2746483T3 (es) 2020-03-06
WO2012037925A3 (fr) 2012-06-07
DE102010044688A1 (de) 2012-03-08
EP2613930B1 (fr) 2019-07-03

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