EP1439949A1 - Verfahren zum einstellen bzw. überwachen eines pressen-werkzeugs und pressen-werkzeug bzw. pressen-steuereinrichtung dafür - Google Patents
Verfahren zum einstellen bzw. überwachen eines pressen-werkzeugs und pressen-werkzeug bzw. pressen-steuereinrichtung dafürInfo
- Publication number
- EP1439949A1 EP1439949A1 EP02782744A EP02782744A EP1439949A1 EP 1439949 A1 EP1439949 A1 EP 1439949A1 EP 02782744 A EP02782744 A EP 02782744A EP 02782744 A EP02782744 A EP 02782744A EP 1439949 A1 EP1439949 A1 EP 1439949A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press
- tool
- parameters
- control
- control device
- 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
Links
Classifications
-
- 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
- B30B15/26—Programme control arrangements
Definitions
- the invention relates to a method for setting or monitoring a press tool with the generic features of claims 1 and 5 as well as a press tool and a press control device therefor.
- presses are used with tools set up according to the pressings, press pressures of up to 800 t and more being used. Due to the high pressures, the individual press and tool components are compressed during the pressing process, which makes it difficult to make a final final fine adjustment of the required press pressures and height adjustments of individual press punches of the tool. The previous adjustment is made more difficult, particularly in the case of tools for finely structured compacts, since the number of press rams or tool axes which can be moved differently from one another can be ten or more.
- DE 197 17 217 C2 discloses a method and a device for producing pressings made of hard metal, ceramic, sintered metal or the like. Taking into account the material to be pressed and the filling, a pressing error is determined in a single process and compensated for by a pressure change in a special press stamp. To make this possible, a target curve is determined and saved as a force-displacement diagram using press tests. In later pressing processes, the actual curve is compared with this target curve. A possible error in the creation of a respective compact is thus compensated for by a target curve comparison.
- DE 37 15 077 C2 discloses a method for producing pressings or moldings from powdered or granular materials, this method being comparable in basic steps to that described above.
- the pulling force when the pressing tools are pulled off is measured and compared with predetermined comparison values, and that, depending on the comparison result, the further control of the press, that is to say for each subsequent pressing operation, is carried out.
- an interruption of the pull-off should be provided when the measured pull-off force is greater than a predetermined comparison value in order to enable tool cleaning or tool replacement.
- JP 07290294 A discloses a method for preparing operating data for a press.
- simulations are carried out arithmetically and displayed on a screen, the Simulations calculate a pressing process to be carried out later.
- the implementation in control operating data of the corresponding press takes place in a second process step.
- the machine is then operated with these control operating data, it finally being explicitly stated that the test processing, also referred to as a test stroke by a person skilled in the art, can be shortened with a large number of test strokes compared to the previous procedure.
- the risk of errors due to input errors, parameters not taken into account in the simulation program, implementation errors in the machine parameters and errors in the input of the machine parameters into the press remains problematic.
- the object of the invention is to propose methods for setting or monitoring a press tool, a press tool or a press control device that enable effective programming and / or monitoring of the programming and the tool.
- the computational simulation process of a press hub in a computer device enables a first check of the defined process sequence or the correspondingly carried out programming. Furthermore, by detecting operating parameters, a deviation of the actual values from the target values can be determined and corrected accordingly on the tool or in the programming. Accordingly, the number of emergency stops or even tool breaks be significantly minimized. In an advantageous manner, the simulation in a computer device allows optimal programming to be carried out before a tool is installed in the press, so that the actual downtime in the press can also be minimized.
- the determination of actual values in the virtual test hub enables a comparison with previously determined target values, so that the control program can be adjusted manually or automatically.
- the virtual test stroke is expediently repeated, this procedure being carried out until the actual value and the target value lie within a predetermined tolerance range.
- An automatic adaptation of parameters for programming is particularly advantageous, with minimization and e.g. iterative or interpolating methods can be used. If, in the event of a deviation greater than a predeterminable critical tolerance, an output is made to a programmer or other user, the programmer can then also check or manually correct parameters before further automatic adaptation of the programming is continued. In addition to taking into account special tool-specific parameters, this also enables manual correction in the event of a changed powder or granule composition.
- Operating parameters are advantageously monitored during the test strokes and also during later operation. For this purpose, operating parameters can be determined or recorded at any time or at different times, in order to be able to compare such operating parameters with target values or actual values or operating parameters determined at an earlier point in time.
- an error program is advantageously started.
- the error program can carry out an automatic correction of the control program or the parameters used for it, or it can also cause the entire operation to be terminated.
- the error program can only evaluate and document the deviations determined.
- the error program expediently displays recorded parameters and deviations directly at a machine control station, a central control device or at a remote location.
- a monitoring device from the press or tool manufacturer, to which the corresponding data are communicated, for example via telecommunication connections, can in particular also be used as the remote point.
- the manufacturer of the press or the tool can carry out long-term monitoring in order to be able to prepare for cyclical maintenance work or to be able to recognize basic problems of the press or the tool in good time.
- Individual operating parameters can be recorded in various ways. In addition to the direct tapping of parameters by means of strain or compression measuring strips on individual components, e.g. B.
- Pressures can be used both purely mechanically and by means of appropriate pressure sensors in the hydraulic area of hydraulic presses.
- Such a reference method for monitoring the tool in particular thus enables the recording, documentation and evaluation of parameters and results achieved.
- a comparison of values can be carried out automatically and / or manually using lists and diagrams.
- the creation of recommendations for future procedures / construction and the creation of a database with data on success and failure regarding various findings are possible.
- the manual start of the monitoring is used to determine changes in the tool or the press after e.g. longer breaks or removal times of this tool.
- test tool can also be provided for testing a press as such.
- a database is expediently set up, which contains control and monitoring methods for each individual tool type or each individual tool. This means that, in particular, the manufacturer can also make accelerated adjustments to changed tools by using programs of comparable existing tools. In particular, users can draw conclusions about interim changes by using existing data from a tool's previous cycle of use.
- a monitoring or test cycle can thus advantageously be provided, after the end of which special analysis methods start automatically or manually.
- Fig. 2 is a flowchart for the programming and implementation of a virtual hub
- Fig. 3 is a flowchart for monitoring the operation of a corresponding press.
- a press or a tool 1 inserted therein have a large number of movable components.
- this includes a base plate 10, which is usually immovably mounted within a tool frame of the press.
- the base plate 10 serves to mount a large number of individual plates and stamp carriers 11 such that they can move relative to this base plate 10.
- individual stamps 12 can be supported directly on the base plate 10 and on the individual further plates or stamp carriers 11, which end as press stamps for pressing a powder or granulate in a die opening that can be filled with powder and serve there for the molding of the powder.
- the two subchambers of the cylinder chamber 14 are supplied with a corresponding hydraulic medium from a hydraulic pump P via hydraulic lines 16.
- piston / cylinder arrangements 13 a z. B. can also be arranged directly in the further plates or stamp carriers 11, as is illustrated by the stamp 12a, which is supported on a corresponding piston rod 15a.
- the movement of the plunger 12a relative to the base plate 10 thus takes place via a piston rod 15b which is movably mounted in the base plate 10 in a corresponding piston / cylinder arrangement 13b and additionally via the piston / cylinder arrangement 13a which is arranged in the plunger carrier 11.
- At least one central control device C which is advantageously coupled to a memory M for storing operating parameters and parameters for individual tools, is used to control the various hydraulic pumps P required for this purpose.
- the hydraulic pumps P as well as the central control device C and the storage device M can be all or part of the tool or also part of the press or a separate operating device coupled to the press.
- various measuring sensors are also arranged on the press and / or the tool 1 and its components.
- Such sensors can be, for example, measuring strips 21 which, for. B. on a piston rod 15 for detecting its compression during the press stroke.
- pressure transducers 22 which register the hydraulic pressure prevailing in the area of the cylinder chamber 14.
- pressure transducers in transition areas between e.g. B. a piston rod and a plate attached thereto.
- Additional sensors can, for example, determine the conductivities of individual compressed components or the finished compacts, or use ultrasound or laser beams to measure heights and the like.
- the time sequence can also be recorded, for example to record the required pressing time from the initiation of the pressing to the end of the compression process.
- a few to several dozen or more individual components of a tool can be controlled relative to one another.
- the number of recordable measured values can also range from zero to a few dozen or more parameters.
- all parameters relating to the individual tool components and also all parameters that can be determined by measuring sensors are advantageously taken into account.
- control method or control program is described broken down into two modules, both of which can also be used advantageously as independent control programs.
- 2 represents a control program or module with which a first setting and generation of the actual control program for the press stroke is described.
- 3 describes a reference program or an expanded control program, which is designed to monitor the functions and optimally to take measures in the event of deviations and errors.
- Solid lines indicate process sequences, dotted lines control data or data to be saved.
- the program or method for setting a press tool begins with the start 41 of the method, the press tool not only being used for hydraulic or mechanical powder presses but also for other types of presses, in particular in powder metallurgy and Ceramic area, are to be understood.
- a flow chart is created.
- the flow chart is implemented in a corresponding control method, target values for individual components and measurable operating parameters being determined and taken into account in an advantageous manner.
- target values for individual components and measurable operating parameters being determined and taken into account in an advantageous manner.
- the flowchart is drawn up, it is expedient to use a large number of parameters which are stored in a memory device M. It is also possible to create and store a complete schedule or a correspondingly programmed control method or control program separately in a storage device, e.g. the storage device M.
- the output of the individual method steps and parameters is advantageously provided on a screen and / or as a graphic printout for the operator of the tool for illustration and testing purposes.
- the sequence method already takes into account procedural steps with plausibility checks that prevent the permissible limit values or pressures from being exceeded, as can occur, for example, in situations in which the piston / cylinder arrangement 13a moves the plunger 12a, the piston / cylinder arrangement 13a in turn is arranged in the plate 11 movable by the further piston / cylinder arrangement 13b.
- a test hub 43 is carried out, which is also referred to below as a virtual hub 43.
- the individual movements are simulated in this virtual hub 43, the results being output as actual values.
- the individual forces of the various components acting in this way can also advantageously be taken into account in terms of surface technology.
- the output can take place either as numerical values and / or graphically for visual checks.
- a query 45 in which the target values determined in the course of the schedule 42 are compared with the actual values 44 determined in the virtual hub 43.
- a new determination or adaptation of the corresponding parameters or of the control method is carried out in a further adaptation step 46.
- the adaptation can be carried out automatically, in particular iteratively, but can also be carried out manually by manually entering new parameters or changing the method steps.
- a combination of automatic and manual adjustment is also possible, for example if it is specified for individual parameters that automatic adjustment is permitted or not permitted. According to that
- Flow chart creation step 42 again determines ideal target values if a necessary change in the target values should emerge.
- the determined parameters and method steps are, as in the case of the creation of the schedule 42, also advantageously stored in the adaptation device 46 in the memory device M.
- a first test stroke 47 is carried out, which is advantageously designed to be optically monitorable.
- query step 49 returns to adaptation step 46 or a comparable adaptation step to include individual parameters and / or the process sequence for the individual components of the press -Adjust tool accordingly.
- the process sequence described below can be carried out as a separate process, in particular a separate software program, but can also be integrated into a control process for controlling the pressing and thus become part of the general control process.
- a reference method or reference program is described below as an example, which is used as an independent program in addition to the actual control program.
- Reference program 62a can be carried out in a corresponding control device C.
- Both reference parameters for an existing reference program and a tool-specific reference program can be entered manually, but can also be taken from a memory device M.
- the storage device M can be part of a tool, part of a press or a separate storage device M in a separate control device.
- Both reference parameters and a reference program can advantageously be taken from a method for setting the press tool, as is described, for example, with reference to the sequence in FIG. 2.
- a general redefinition of the individual required parameters and process steps is also possible.
- the generation of a reference program or Reference parameters can in particular also take place using measured values which are recorded or ascertained when the press tool is set and / or during later operation.
- the continuous machine cycle is checked.
- the check can be carried out continuously in the sense that continuous monitoring is carried out with each individual press stroke. However, regular monitoring is also possible after a predetermined number of press strokes or a predetermined period of time between individual checking steps 63. In preferred embodiments, the checking is triggered manually as required.
- a comparison is made in a query 64, in which previous target values are used.
- the previous target values can, for example, be specified as reference parameters or recorded or determined at previous times.
- this check 63 of the machine cycle is continued until the end of the cycle 65 before the reference method ends 66.
- the corresponding data can also be transmitted via a telecommunications device T to a remote monitoring device.
- a remote monitoring device can be, in addition to a control center for the operator of the press or the press tool, also the manufacturer of the press or the press tool. In the shortest possible way, this serves for continuous monitoring of the individual components by the manufacturer, who in turn can prepare and implement appropriate measures when a malfunction is detected or a change is detected, in particular a continuous change.
- a general transfer of the Values from the memory device M with the individual reference parameters and / or reference programs out of the memory device M or into it via a corresponding data transmission line or telecommunication interface T are possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Presses (AREA)
- Forging (AREA)
- Press Drives And Press Lines (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10151858A DE10151858A1 (de) | 2001-10-24 | 2001-10-24 | Verfahren zum Einstellen bzw. Überwachen eines Pressen-Werkzeugs und Pressen-Werkzeug bzw. Pressen-Steuereinrichtung dafür |
DE10151858 | 2001-10-24 | ||
PCT/DE2002/003983 WO2003037610A1 (de) | 2001-10-24 | 2002-10-22 | Verfahren zum einstellen bzw. überwachen eines pressen-werkzeugs und pressen-werkzeug bzw. pressen-steuereinrichtung dafür |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1439949A1 true EP1439949A1 (de) | 2004-07-28 |
EP1439949B1 EP1439949B1 (de) | 2009-12-02 |
Family
ID=7703178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02782744A Expired - Lifetime EP1439949B1 (de) | 2001-10-24 | 2002-10-22 | Verfahren zum einstellen bzw. überwachen eines pressen-werkzeugs und pressen-werkzeug bzw. pressen-steuereinrichtung dafür |
Country Status (6)
Country | Link |
---|---|
US (1) | US20040195715A1 (de) |
EP (1) | EP1439949B1 (de) |
AT (1) | ATE450368T1 (de) |
DE (2) | DE10151858A1 (de) |
ES (1) | ES2337560T3 (de) |
WO (1) | WO2003037610A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4070942A1 (de) | 2021-04-06 | 2022-10-12 | Osterwalder AG | Verfahren zum erstellen und verifizieren eines programms zum steuern der komponenten einer mehrplatten-pulverpresse unter verwendung einer numerischen steuerung |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10342645A1 (de) * | 2003-09-16 | 2005-04-07 | Komage-Gellner Maschinenfabrik Kg | Presse für die Herstellung von Formlingen aus pulverförmiger Masse |
DE10360530A1 (de) * | 2003-12-22 | 2005-03-10 | Siemens Ag | Virtuelle Inbetriebnahme einer Maschine |
US20070088454A1 (en) * | 2004-10-25 | 2007-04-19 | Ford Motor Company | System and method for troubleshooting a machine |
DE102005052158B4 (de) * | 2005-11-02 | 2008-01-03 | Fette Gmbh | Verfahren und Meßsystem zur Bildung einer Referenz bei einer Pulverpresse |
DE102005052748A1 (de) * | 2005-11-04 | 2007-05-10 | Dorst Technologies Gmbh & Co. Kg | Pressenanordnung und Verfahren zum Pressen von Pressteilen |
DE102010044688A1 (de) | 2010-09-08 | 2012-03-08 | Dorst Technologies Gmbh & Co. Kg | Metall- oder Keramikpulver-Elektropresse und Steuerverfahren dafür |
CZ305959B6 (cs) * | 2015-02-24 | 2016-05-18 | České vysoké učení technické v Praze, Fakulta strojní, Ústav technologie obrábění, projektování a metrologie | Experimentální stroj pro testování otěruvzdornosti, zejména při lisování žárovzdorných materiálů |
DE202015103051U1 (de) * | 2015-04-20 | 2016-07-21 | Korsch Ag | Tablettiermaschine mit einer Vorrichtung zur Ausführung einer Dashboard- Anwendung |
DE102016015543B4 (de) | 2016-12-27 | 2018-10-18 | Audi Ag | Verfahren zur Auslegung eines Umformwerkzeugs für eine Umformpresse |
US10068455B1 (en) * | 2017-04-13 | 2018-09-04 | Steven Label Corporation | Machine press data monitoring and analysis system |
DE102017004803A1 (de) * | 2017-05-18 | 2018-11-22 | Cosateq Gmbh | Verfahren zum Betrieb einer Pulverpresse mit Lagenregelung und Pulverpresse zur Ausführung des Verfahrens |
DE102017119342A1 (de) * | 2017-08-24 | 2019-02-28 | COSATEQ GmbH & Co. KG | Verfahren zur Steuerung einer Metall- oder Keramikpulverpresse mit automatischer Trajektorien-Generierung |
DE102021121991A1 (de) | 2021-08-25 | 2023-03-02 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Bestimmen eines Betriebsparameters eines Werkzeugs zum Formen von Bauteilen in einer Presse |
CN116811343B (zh) * | 2023-08-25 | 2023-11-10 | 湘潭新云科技有限责任公司 | 一种电动直驱cnc压机智能操作系统 |
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IT1107475B (it) * | 1978-07-24 | 1985-11-25 | Merisinter Spa | Complesso di pressa e porta-stampo per la compattazione nella metallurgia delle polveri |
DE3142126A1 (de) * | 1981-10-23 | 1983-05-11 | Dorst-Keramikmaschinen-Bau Otto Dorst U. Dipl.-Ing. Walter Schlegel, 8113 Kochel | "presse zum herstellen masshaltiger presslinge aus pulverfoermigem material" |
DE3715077A1 (de) * | 1987-05-06 | 1988-12-01 | Netzsch Maschinenfabrik | Verfahren zum steuern einer presse |
DE3919847A1 (de) * | 1989-06-15 | 1990-12-20 | Mannesmann Ag | Verfahren und vorrichtung zur herstellung masshaltiger presslinge |
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-
2001
- 2001-10-24 DE DE10151858A patent/DE10151858A1/de not_active Withdrawn
-
2002
- 2002-10-22 ES ES02782744T patent/ES2337560T3/es not_active Expired - Lifetime
- 2002-10-22 DE DE50214055T patent/DE50214055D1/de not_active Expired - Lifetime
- 2002-10-22 WO PCT/DE2002/003983 patent/WO2003037610A1/de active Application Filing
- 2002-10-22 AT AT02782744T patent/ATE450368T1/de active
- 2002-10-22 EP EP02782744A patent/EP1439949B1/de not_active Expired - Lifetime
-
2004
- 2004-04-23 US US10/830,756 patent/US20040195715A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO03037610A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4070942A1 (de) | 2021-04-06 | 2022-10-12 | Osterwalder AG | Verfahren zum erstellen und verifizieren eines programms zum steuern der komponenten einer mehrplatten-pulverpresse unter verwendung einer numerischen steuerung |
WO2022214334A1 (de) | 2021-04-06 | 2022-10-13 | Osterwalder Ag | Verfahren zum erstellen und verifizieren eines programms zum steuern der komponenten einer mehrplatten-pulverpresse unter verwendung einer numerischen steuerung |
Also Published As
Publication number | Publication date |
---|---|
DE10151858A1 (de) | 2003-05-08 |
ES2337560T3 (es) | 2010-04-27 |
ATE450368T1 (de) | 2009-12-15 |
WO2003037610A1 (de) | 2003-05-08 |
EP1439949B1 (de) | 2009-12-02 |
US20040195715A1 (en) | 2004-10-07 |
DE50214055D1 (de) | 2010-01-14 |
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