EP1048450A2 - Procédé pour déterminer la position d'un poinçon dans une presse à poudre - Google Patents

Procédé pour déterminer la position d'un poinçon dans une presse à poudre Download PDF

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Publication number
EP1048450A2
EP1048450A2 EP00103757A EP00103757A EP1048450A2 EP 1048450 A2 EP1048450 A2 EP 1048450A2 EP 00103757 A EP00103757 A EP 00103757A EP 00103757 A EP00103757 A EP 00103757A EP 1048450 A2 EP1048450 A2 EP 1048450A2
Authority
EP
European Patent Office
Prior art keywords
die
press
press ram
computer
displacement sensor
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.)
Withdrawn
Application number
EP00103757A
Other languages
German (de)
English (en)
Other versions
EP1048450A3 (fr
Inventor
Jürgen Hinzpeter
Ingo Schmidt
Jörg Reitberger
Ulrich Gathmann
Klaus Peter R-Ssmann
Thomas Pannewitz
Stephan Mallon
Alexander Oldenburg
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.)
Fette GmbH
Original Assignee
Fette GmbH
Wilhelm Fette GmbH
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 Fette GmbH, Wilhelm Fette GmbH filed Critical Fette GmbH
Publication of EP1048450A2 publication Critical patent/EP1048450A2/fr
Publication of EP1048450A3 publication Critical patent/EP1048450A3/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Definitions

  • the invention relates to a method for determining the position of a Press ram of a powder press, preferably a metal powder press according to the preamble of claim 1.
  • the positioning accuracy is from Upper and lower punches of a powder press, for example one Metal powder press, important. It is an accuracy of ⁇ 0.01 mm to adhere to.
  • the invention is therefore based on the object of a method for Specify the position of a ram of a powder press, the works precisely and is largely independent of press deformation due to pressing forces.
  • Upper and lower stamps have a so-called absolute Displacement system that can work in a conventional manner. It works with relatively low accuracy for the rough travel range, a measuring accuracy of 0.01 mm is sufficient.
  • an incremental is in the inventive method Travel sensor used, the z. B. a measurement accuracy of 0.25 microns having. This is actuated directly by the press ram, for example via a bracket on the press ram.
  • the measuring range of such incremental encoder is relatively short. It is sufficient if the Position determination with the help of the incremental encoder shortly before The ram is immersed in the die.
  • the switch from one to the other Position transducers at the highest travel speed e.g. B. 500 mm / sec.
  • the computer processes the measured values a reference measure is saved.
  • This reference measure gives one specified distance of the press ram to the upper edge of the die or Lower edge of the die again.
  • the measure can be obtained in that a corresponding teaching is arranged between the stamp and the die table and the stamp at very low speed against the teaching is driven. Since the distance measure is known, it can be in the computer as Reference dimension can be saved. A so-called. Reference offset saved.
  • the ram is continued from the reference dimension from the die and the number of Pulses are counted until a so-called index pulse is reached be generated. Indexing is done using the incremental Displacement sensor. Therefore, during the pressing process of the incremental Displacement sensor that only actuates when the reference offset is reached If the index pulse is triggered, the distance between the Stamp and the die known, and the incremental displacement sensor can then the position of the press ram when the pressing process is continued specify. Is the number of impulses covered, which results from the sum of reference measure and reference offset, the number corresponds to Subsequent pulses of the respective position of the ram in the Die hole.
  • the number of pulses stored in the process of Press stamps are generated from the reference dimension to the reference offset.
  • a second counter is the respective actual position by the incremental Position transducer recorded.
  • the sum of the reference dimension and reference offset is stored in a buffer before the second counter.
  • the Index pulse the buffer content is transferred to the second counter for the sole determination of the position by the incremental displacement sensor.
  • the switchover takes place on the one hand from the absolute to the incremental transducer controlled by the Calculation within the scope of its process cycle time without loss of position.
  • the reference value reference dimension + Reference offset
  • the switchover takes place on the one hand from the absolute to the incremental transducer controlled by the Calculation within the scope of its process cycle time without loss of position.
  • the reference value reference dimension + Reference offset
  • Loss of position or falsification by electrical Interference can be prevented, especially when the press is in continuous operation and with it corresponding measurement errors.
  • Machine frames are an upper press cylinder 12 and a lower one Press cylinder 14 attached.
  • Each press cylinder has a piston 16 or 18 to actuate a ram 20 or 22.
  • the cylinder 12 or 14, an absolute displacement sensor 24 or 26 is assigned.
  • the Press die 20 has a boom 28 and the press die 22 one Extension arm 30.
  • the arms 28, 30 act with an incremental Position measuring system 32 together.
  • Upper stamp 20 and lower stamp 22 work together with a die 34, which is arranged in a die table 36.
  • a die 34 which is arranged in a die table 36.
  • At 38a is a compact indicated, which arises from the interaction of the ram 20, 22 and consists for example of metal powder.
  • Fig. 2 the upper absolute displacement sensor 24 is indicated as well as his Position above the upper edge 38 of the die. You can also see the incremental displacement transducer 32 with a button 40, which is from the boom 28th is operated. A row of lines is indicated by 42, which represents should be that with an adjustment of the button 40 along the Double arrow 44 per stroke a pulse is generated. At 46 is in the Dash row 42 indicated a so-called index pulse, its meaning will be described below.
  • FIG. 3 shows a computer at 50, which has a first counter 52 or Z1 and a second counter 54 or Z2.
  • the counter Z2 is on Upstream of buffer 54a.
  • block 56 is an add and Comparison unit provided, in which a reference measure is also stored.
  • the computer 50 determines the position of the press ram can, for example, the ram 20 of FIG. 1, it is a Pass the reference dimension for the ram 20.
  • the ram 20 from the cylinder 12 on a so-called. Reference dimension 58 (Fig. 2) driven. This is done with the help of e.g. B. one special teaching, the dimension of which is generated with high accuracy.
  • a gauge can, moreover, the position of the ram relative to Upper die edge 38 are checked.
  • the absolute Position transducer 24 is the absolute at any time after this command Position.
  • the cylinder 12 moves the ram at a slow speed upwards until the incremental displacement sensor 32 receives the index pulse 46 reached.
  • the counter Z1 detects the counting pulses from the reference dimension to Index pulse. The number of these pulses or the distance is shown in FIG 60 and is also given below as a reference offset.
  • the sum of reference dimension 58 and reference offset is calculated in the computer and stored in the buffer 54a.
  • the absolute Position transducers 24 and 26 the actual position on the computer 50. Simultaneously the computer finds a comparison between the two every millisecond Counter reading Z2 of the incremental displacement sensor 32 and the sum measure (Reference measurement + reference offset) instead. If the value of the counter Z2 is less than the sum measure, the computer takes the actual position from the counter Z2 and therefore works exclusively with high-precision incremental ones Sensor.
  • the Boom 28 or 30 with the incremental displacement sensor 32 in Contact. This then activates the counter via the index pulse generated Z2 for taking over the content of the buffer 54a (reference dimension + Reference offset).
  • the press die 20 is moved further in the direction of the upper edge 38 of the die, the counter value is reduced before Z2 and after that described above In comparison, the incremental measuring system for positioning becomes active.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Control Of Presses (AREA)
EP00103757A 1999-04-30 2000-02-23 Procédé pour déterminer la position d'un poinçon dans une presse à poudre Withdrawn EP1048450A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19919693 1999-04-30
DE19919693A DE19919693C2 (de) 1999-04-30 1999-04-30 Verfahren zur Positionsbestimmung eines Preßstempels einer Pulverpresse

Publications (2)

Publication Number Publication Date
EP1048450A2 true EP1048450A2 (fr) 2000-11-02
EP1048450A3 EP1048450A3 (fr) 2002-09-04

Family

ID=7906413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103757A Withdrawn EP1048450A3 (fr) 1999-04-30 2000-02-23 Procédé pour déterminer la position d'un poinçon dans une presse à poudre

Country Status (3)

Country Link
US (1) US6442859B1 (fr)
EP (1) EP1048450A3 (fr)
DE (1) DE19919693C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1277564A3 (fr) * 2001-07-19 2004-01-28 Fette GmbH Procédé de compression de matériaux en poudre
EP1782943A3 (fr) * 2005-11-02 2009-06-03 Fette GmbH Procédé et système de mesure pour produire une référence dans une presse à poudre
WO2019212999A1 (fr) * 2018-04-30 2019-11-07 Wilson Tool International Inc. Ensemble de suivi d'outil et de collecte de données
WO2020207645A1 (fr) * 2019-04-09 2020-10-15 Kramer W Dieter Procédé et dispositif de mesure servant à mesurer ou à étalonner des ustensiles de presses

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10212315B4 (de) * 2002-03-20 2004-04-29 Wilhelm Fette Gmbh Wegmeßsystem für eine Pulverpresse
US7194820B2 (en) * 2005-05-09 2007-03-27 Mate Precision Tooling Inc. Punch press alignment instrument
US7484312B2 (en) * 2005-05-09 2009-02-03 Mate Precision Tooling, Inc. Punch press alignment instrument
CN100415502C (zh) * 2006-10-16 2008-09-03 许阳 干粉压机专用程序式电调系统及其控制方式
CN101422970B (zh) * 2007-11-02 2012-10-17 北京中科三环高技术股份有限公司 位置控制双向压制成型压机
DE102008015820B4 (de) * 2008-03-27 2013-02-28 Fette Compacting Gmbh Vorrichtung und Verfahren zur Messung der vertikalen Position von Ober- und Unterstempeln einer Rundläufer-Tablettenpresse
FR2951989B1 (fr) * 2009-10-30 2012-02-03 Medelpharm Installation pour la realisation d'un produit solide a partir d'un ou de plusieurs materiaux pulverulents
JP5032690B1 (ja) * 2011-07-27 2012-09-26 住友電気工業株式会社 圧粉成形体
DE102016120195A1 (de) * 2016-10-24 2018-04-26 Dorst Technologies Gmbh & Co. Kg Presseneinrichtung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542938A (en) * 1949-06-29 1951-02-20 David L Morris Tool setter for lathes
SE398981B (sv) * 1976-05-11 1978-01-30 Malmberg Sven Kurt B Forfarande vid fastsettning och centrering av stansverktyg och anordning for genomforande av forfarandet
DE2924704A1 (de) * 1979-06-19 1981-01-15 Dorst Keramikmasch Einrichtung zur festlegung der hoehe von pressteilen an einer presse, insbesondere zum pressen von pressteilen aus pulverfoermigem ausgangsmaterial
JPS5838258B2 (ja) * 1979-12-01 1983-08-22 双葉電子工業株式会社 金型の型合せ方法及び型合せ装置
CH646895A5 (fr) * 1982-05-18 1984-12-28 Bobst Sa Dispositif pour confectionner les matrices d'une presse a platines.
US4485660A (en) * 1982-12-29 1984-12-04 Toyota Jidosha Kabushiki Kaisha Press sublifter with a movable gauge
SE456458B (sv) * 1983-07-12 1988-10-03 Nobel Elektronik Ab Reglerkrets
DE3930475A1 (de) * 1989-09-12 1991-03-14 Dorst Masch & Anlagen Presse zur herstellung masshaltiger presslinge aus pulverfoermigem material
DE4040410C1 (en) * 1989-12-21 1991-11-07 Bernhard Dr.-Ing. 4782 Erwitte De Juergenhake Tooling for crimping electrical connectors - comprises crank press with spring-loaded plunger, connected torsionally to transducer providing displacement measurement
JPH08155694A (ja) * 1994-11-30 1996-06-18 Yoshitsuka Seiki:Kk 粉末成形プレスにおける金型位置確認方法
DE19846210A1 (de) * 1998-10-07 2000-04-13 Dorst Masch & Anlagen Presse zum Herstellen von Formkörpern

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1277564A3 (fr) * 2001-07-19 2004-01-28 Fette GmbH Procédé de compression de matériaux en poudre
EP1782943A3 (fr) * 2005-11-02 2009-06-03 Fette GmbH Procédé et système de mesure pour produire une référence dans une presse à poudre
US7803294B2 (en) 2005-11-02 2010-09-28 Fette Gmbh Method and measuring system for obtaining a reference for a powder press
WO2019212999A1 (fr) * 2018-04-30 2019-11-07 Wilson Tool International Inc. Ensemble de suivi d'outil et de collecte de données
US11204596B2 (en) 2018-04-30 2021-12-21 Wilson Tool International Inc. Tool tracking and data collection assembly
WO2020207645A1 (fr) * 2019-04-09 2020-10-15 Kramer W Dieter Procédé et dispositif de mesure servant à mesurer ou à étalonner des ustensiles de presses
US11897220B2 (en) 2019-04-09 2024-02-13 Dietmar W Kramer Method for measuring or calibrating utensils used in a press

Also Published As

Publication number Publication date
DE19919693C2 (de) 2001-08-23
EP1048450A3 (fr) 2002-09-04
DE19919693A1 (de) 2000-11-23
US6442859B1 (en) 2002-09-03

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