EP1199150A2 - Verfahren und Vorrichtung zum Bestimmen von Pressparametern zum Pressen komplex aufgebauter Presslinge - Google Patents
Verfahren und Vorrichtung zum Bestimmen von Pressparametern zum Pressen komplex aufgebauter Presslinge Download PDFInfo
- Publication number
- EP1199150A2 EP1199150A2 EP01124724A EP01124724A EP1199150A2 EP 1199150 A2 EP1199150 A2 EP 1199150A2 EP 01124724 A EP01124724 A EP 01124724A EP 01124724 A EP01124724 A EP 01124724A EP 1199150 A2 EP1199150 A2 EP 1199150A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressing
- height
- density
- compact
- hsi
- 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
- 238000003825 pressing Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims description 29
- 238000010276 construction Methods 0.000 title 1
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 claims 1
- 239000002994 raw material Substances 0.000 description 6
- 239000008188 pellet Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
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
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
Definitions
- the invention relates to a method for determining from pressing parameters to pressing complex structures Compacts with the generic features of the claim 1 and a device for performing such Process.
- Fig. 1 pellet shown do not start all three Segment sections on the same basic level, so that at corresponding calculations also the distances x1 or x3 from a support surface or a basic level are.
- a compact is considered below, in which all three segment sections S1, S2 and S3 differ from extend from a basic level upwards like this 2A can be seen.
- FIG. 2B there is an exemplary one Press device for pressing powdered raw materials to such compacts 9 in particular from a Stamp guide 1, in which in particular a main stamp 2, hereinafter also referred to as the upper bear, up and down to be led.
- a stamp guide 1 in which in particular a main stamp 2, hereinafter also referred to as the upper bear, up and down to be led.
- the segment stamp 6, 7 and 8 can by means of Pistons 3, 4 and 5, each relative to the main stamp 2 and be moved down.
- the segment stamps 6, 7 and 8 are in a press form, which here for the graphic Simplification identical to stamp guide 1 is adopted.
- the mold is used to hold one to be pressed granular or powdery base material and closes down with a bottom 10.
- a comparable press ram arrangement on the from below with a main stamp and / or one Large number of individual segment stamps a pressing force in the direction the press shape can be exercised.
- Fig. 2B position shown is the arrangement in the Press position with lowered main stamp 2 and lowered Segment stamps 6, 7 and 8.
- the compact 9 takes the Form of the compact shown in Fig. 2A.
- the arrangement of the path measuring systems does not have any effect later pressing operations, this arrangement is problematic however for determining the required pressing parameters. Due to the high pressures that are used to press the Powdery raw materials are used in the Also press the individual main and segment stamps 2, 6 - 8 compressed. Usual deflections of these components Press are in the mm range, while the Accuracy requirements for the compacts in the 0.01 mm range lie.
- the usual procedure for setting height and Density values of the individual segment sections S1, S2, S3 of a Presslings 9 comprises a large number, usually clearly more than 15 iterative approximate pressing tests.
- a compact 9 is first made manufactured with a density that allows the compact 9 to touch and measure. Then try with iterative pressing tests the required part height hs1, hs2 and set hs3. After reaching the required Part heights the required press position or Press height e.g. defined and set by fixed stops.
- the entire press device also springs due to the press force difference different, which also affects the Segment heights hs2, hs3 of the segment sections S2 and S3 as well transfers ⁇ 2 or ⁇ 3 to their densities.
- the values of the segment sections that are actually not affected S2 and S3 are reset accordingly if in the Area of segment section S1 changes in parameters required are. In other words at any position and / or change in density in a segment section Si this via appropriate interactions Changes in the parameters of the remaining segment sections Si.
- FIG. 2B For illustration purposes, a height h OB from a basic level to the path measuring system 11 of the main stamp 2 is shown in FIG. 2B, which allows the movement of the main stamp 2 in the upward and downward direction to be traced.
- the problem is, as stated, the section of the main punch 2, which lies in the upward or downward direction between the path measuring system 11 and the lower edge of the main punch 2, since this section of the main punch 2 is compressed differently when a first pressing pressure is applied than when a first one is applied in addition various second press pressure.
- the object of the invention is to provide a method for Determining press parameters for pressing complex structures Propose compacts where the number of Press attempts is reduced.
- This task is accomplished by a method for determining Pressing parameters for pressing complex compacts, especially powder metallurgical or ceramic Compacts, with the features of claims 1 and 2 solved.
- an automated Device with the features of claim 6 automatically perform such a procedure.
- the measured density value ⁇ measurement is compared with the target value for the density ⁇ target . If the measured value for the density ⁇ measurement and the target value for the density ⁇ target differ for one or all of the segment sections Si, the press mold is again filled with powder.
- the product from the old powder height H PulverAlt and the quotient of the target density value ⁇ setpoint and the measured density value ⁇ measured for the individual segments to determine the new powder height H PulverNeu is determined i.
- the individual press punches 2, 6 - 8 each being moved to the previous height h OB , h1 - h3, so that the individual height values h OB , h1 - h3 on the press are kept constant ,
- the height values on the compact usually change.
- the variable for the old powder level H PulverAlt is assigned with the now used powder level H PulverNeu . The method then goes back to determining the density values ⁇ i for the compact segments Si.
- the method proceeds to the next method step.
- the individual heights hsi for the individual compact segments Si are determined. If these measured height values hsi, measurement for the compact segments Si do not match the target height values hsi, target , the mold is again filled with powder in order to carry out a further pressing test.
- the new powder height H PulverNeu determined time by the product of the old powder height H recently used PulverAlt and the quotient of the nominal height hsi, Soll and the measured height hsi, measured for the individual segments Si.
- the filled powder is pressed with a constant pressing pressure or constant pressing force compared to the last pressing step.
- the tag for the most recently used powder height H PulverAlt is again filled with the last-used height value H PulverNeu.
- the process sequence for determining the individual heights hsi then goes back for the compact segments Si.
- the procedure is suitably equipped Device with a pressing device with a variety of Press punches (2, 6 - 8) which move forward and in one pressing direction are movable back, distance measuring devices (11 - 14) for Measure the movements of the punches (2, 6 - 8), one Pellet parameter determining device for determining Density and / or height parameters ( ⁇ 1 - ⁇ 3, hs1-hs3) of one Presslings (9) and a calculation device for calculating one level for the next one Press test can be partially or fully automated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
- Fig. 1
- einen komplex aufgebauten Pressling mit mehreren Segmentabschnitten unterschiedlicher Höhe;
- Fig. 2A
- ein Beispiel für einen vereinfacht aufgebauten Pressling mit mehreren unterschiedlich hohen Segmentabschnitten;
- Fig. 2B
- eine Pressenanordnung zum Pressen eines pulverförmigen Grundstoffes zu einem Pressling und
- Fig. 3
- ein Ablaufdiagramm für ein Pressverfahren gemäß dem bevorzugten Ausführungsbeispiel.
Claims (7)
- Verfahren zum Bestimmen von Pressparametern zum Pressen von Presslingen aus einem zu verpressenden Grundstoff, bei dem
die Höhe eines Versuchspresslings erst nach dem Erreichen einer Solldichte eingestellt wird. - Verfahren zum Bestimmen von Pressparametern zum Pressen von Presslingen (9) aus einem zu verpressenden Grundstoff mit den Schritten:Pressen eines Versuchspresslings (9) undsolange eine Messdichte (ρMess) außerhalb eines Toleranzmaßes von einer Solldichte (ρSoll) liegt, Fertigen eines weiteren Versuchspresslings (9) mit jeweils einer neuen Pressguthöhe (HPulverNeu), danachBestimmen der Presslingshöhe (hsi) und Vergleichen mit einer Sollhöhe (hsi,Soll) undsolange Sollhöhe (hsi,Soll) und Messhöhe (hsi,Mess) nicht innerhalb einer Toleranz abweichen, erneutes Pressen mit einer neuen Pressguthöhe (HPulverNeu) bei konstanter Presskraft.
- Verfahren nach Anspruch 1 oder 2, bei dem
das Bestimmen der neuen Pressguthöhe (HPulverNeu) beim Bestimmen der Presslingdichte als Produkt der vorherigen Pressguthöhe (HPulverAlt) mit dem Quotienten aus Solldichte (ρSoll) und Messdichte (ρMess) und erneutem Pressen mit konstanter Presshöhe (hOB, h1 - h3) erfolgt. - Verfahren nach einem vorstehenden Anspruch, bei dem
das Bestimmen der neuen Pressguthöhe (HPulverNeu) nach Erreichen der Solldichte (ρSoll) als Produkt der zuletzt verwendeten Pressguthöhe (HPulverAlt) mit dem Quotienten aus Sollhöhe (hsi,Soll) und Messhöhe (hsi,Mess) erfolgt. - Verfahren nach einem vorstehenden Anspruch, bei dem
die Vergleichmessungen, Vergleiche und Neubestimmungen für unterschiedliche Segmente (S1 - S3) komplex aufgebauter Presslinge (9) für jedes Segment (S1 - S3) durchgeführt werden. - Vorrichtung zum automatisierten Bestimmen von Pressparametern zum Pressen von Presslingen aus einem Pressgut miteiner Pressvorrichtung mit einer Vielzahl von Pressstempeln (2, 6 - 8) die in einer Pressrichtung vor- und zurückbewegbar sind,Wegmesseinrichtungen (11 - 14) zum Messen der Bewegungen der Stempel (2, 6 - 8),einer Presslingparameter-Bestimmungseinrichtung zum Bestimmen von Dichte- und/oder Höheparametern (ρ1 - ρ3, hs1-hs3) eines Presslings (9) undeiner Berechnungseinrichtung zum Berechnen einer Pressgutfüllhöhe für einen jeweils nächsten Pressversuch,wobei die Pressversuche mit einem Verfahren nach einem der vorstehenden Ansprüche durchgeführt werden.
- Verfahren bzw. Vorrichtung nach einem vorstehenden Anspruch, bei dem der zu verpressende Grundstoff bzw. das Pessgut ein granulat- oder pulverförmiges Material ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10051236 | 2000-10-16 | ||
DE10051236A DE10051236A1 (de) | 2000-10-16 | 2000-10-16 | Verfahren und Vorrichtung zum Bestimmen von Pressparametern zum Pressen komplex aufgebauter Presslinge |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1199150A2 true EP1199150A2 (de) | 2002-04-24 |
EP1199150A3 EP1199150A3 (de) | 2003-04-02 |
EP1199150B1 EP1199150B1 (de) | 2009-12-02 |
Family
ID=7659961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01124724A Expired - Lifetime EP1199150B1 (de) | 2000-10-16 | 2001-10-16 | Verfahren zum Bestimmen von Pressparametern zum Pressen komplex aufgebauter Presslinge |
Country Status (4)
Country | Link |
---|---|
US (1) | US6656395B2 (de) |
EP (1) | EP1199150B1 (de) |
AT (1) | ATE450369T1 (de) |
DE (2) | DE10051236A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE10254656B4 (de) | 2002-11-22 | 2005-10-13 | Dorst Technologies Gmbh & Co. Kg | Presseneinrichtung zum Herstellen maßhaltiger Presslinge mit zentraler Stempelabstützung |
DE10355963A1 (de) * | 2002-12-02 | 2004-06-24 | Mold-Masters Limited, Georgetown | Hubbegrenzer für einen Nadelventilbetätigungsmechanismus |
US20050196710A1 (en) * | 2004-03-04 | 2005-09-08 | Semiconductor Energy Laboratory Co., Ltd. | Method for forming pattern, thin film transistor, display device and method for manufacturing the same, and television apparatus |
US9101982B2 (en) * | 2009-01-12 | 2015-08-11 | Metec Powder Metal Ab | Multilevel parts from agglomerated spherical metal powder |
DE102010008986A1 (de) * | 2010-02-24 | 2011-08-25 | Dorst Technologies GmbH & Co. KG, 82431 | Verfahren zur Pressparameteranpassung einer Keramik- oder Metallpulverpresse und Keramik- oder Metallpulverpresse zum Durchführen des Verfahrens |
CN112408004A (zh) * | 2020-11-16 | 2021-02-26 | 哈尔滨科友半导体产业装备与技术研究院有限公司 | 一种用于坩埚中粉料平整与孔隙率控制的装置与方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2951716A1 (de) * | 1979-12-19 | 1981-07-02 | Mannesmann AG, 4000 Düsseldorf | Verfahren und vorrichtung zum pressen von formkoerpern |
US5043111A (en) * | 1989-06-15 | 1991-08-27 | Mannesmann Ag | Process and apparatus for the manfuacture of dimensionally accurate die-formed parts |
EP0490148A2 (de) * | 1990-12-13 | 1992-06-17 | Lindemann Maschinenfabrik GmbH | Verfahren und Vorrichtung zum Betreiben einer Brikettierpresse |
DE4209767C1 (de) * | 1992-03-23 | 1993-05-06 | Mannesmann Ag, 4000 Duesseldorf, De | |
US5288440A (en) * | 1991-05-02 | 1994-02-22 | Yoshizuka Seiki Co., Ltd. | Method and apparatus for controlling powder molding press |
US5476631A (en) * | 1992-06-09 | 1995-12-19 | Cincinnati Incorporated | Method and apparatus for adaptive powder fill adjustment on powder metal compacting presses |
JP2000042793A (ja) * | 1998-07-29 | 2000-02-15 | Kikusui Seisakusho Ltd | 粉末圧縮成形機 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4849142A (en) * | 1986-01-03 | 1989-07-18 | Jupiter Technologies, Inc. | Superplastic forging of zirconia ceramics |
FR2600675B1 (fr) * | 1986-06-24 | 1988-08-26 | Pechiney Aluminium | Procede de reglage de la teneur en brai des anodes destinees a la production d'aluminium par electrolyse |
DE4009608A1 (de) * | 1989-04-07 | 1990-10-11 | Laeis & Bucher Gmbh | Verfahren zur herstellung von formlingen aus koernigem und pulverfoermigem werkstoff und vorrichtung zur durchfuehrung des verfahrens |
DE4009609A1 (de) | 1989-12-20 | 1991-06-27 | Gedib Ingbuero Innovation | Vorrichtung zur schwingungserregung |
-
2000
- 2000-10-16 DE DE10051236A patent/DE10051236A1/de not_active Withdrawn
-
2001
- 2001-10-16 US US09/982,505 patent/US6656395B2/en not_active Expired - Lifetime
- 2001-10-16 DE DE50115241T patent/DE50115241D1/de not_active Expired - Lifetime
- 2001-10-16 AT AT01124724T patent/ATE450369T1/de active
- 2001-10-16 EP EP01124724A patent/EP1199150B1/de not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2951716A1 (de) * | 1979-12-19 | 1981-07-02 | Mannesmann AG, 4000 Düsseldorf | Verfahren und vorrichtung zum pressen von formkoerpern |
US5043111A (en) * | 1989-06-15 | 1991-08-27 | Mannesmann Ag | Process and apparatus for the manfuacture of dimensionally accurate die-formed parts |
EP0490148A2 (de) * | 1990-12-13 | 1992-06-17 | Lindemann Maschinenfabrik GmbH | Verfahren und Vorrichtung zum Betreiben einer Brikettierpresse |
US5288440A (en) * | 1991-05-02 | 1994-02-22 | Yoshizuka Seiki Co., Ltd. | Method and apparatus for controlling powder molding press |
DE4209767C1 (de) * | 1992-03-23 | 1993-05-06 | Mannesmann Ag, 4000 Duesseldorf, De | |
US5476631A (en) * | 1992-06-09 | 1995-12-19 | Cincinnati Incorporated | Method and apparatus for adaptive powder fill adjustment on powder metal compacting presses |
JP2000042793A (ja) * | 1998-07-29 | 2000-02-15 | Kikusui Seisakusho Ltd | 粉末圧縮成形機 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 05, 14. September 2000 (2000-09-14) & JP 2000 042793 A (KIKUSUI SEISAKUSHO LTD), 15. Februar 2000 (2000-02-15) * |
Also Published As
Publication number | Publication date |
---|---|
DE50115241D1 (de) | 2010-01-14 |
EP1199150B1 (de) | 2009-12-02 |
US6656395B2 (en) | 2003-12-02 |
US20030141619A1 (en) | 2003-07-31 |
EP1199150A3 (de) | 2003-04-02 |
ATE450369T1 (de) | 2009-12-15 |
DE10051236A1 (de) | 2002-04-25 |
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