EP1287977A3 - Verfahren und Vorrichtung zur Minimierung der Streuung der maximalen Presskräfte in einer Pulverpresse - Google Patents

Verfahren und Vorrichtung zur Minimierung der Streuung der maximalen Presskräfte in einer Pulverpresse Download PDF

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Publication number
EP1287977A3
EP1287977A3 EP02017261A EP02017261A EP1287977A3 EP 1287977 A3 EP1287977 A3 EP 1287977A3 EP 02017261 A EP02017261 A EP 02017261A EP 02017261 A EP02017261 A EP 02017261A EP 1287977 A3 EP1287977 A3 EP 1287977A3
Authority
EP
European Patent Office
Prior art keywords
maximum pressing
minimizing
powder press
pressing forces
spread
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
EP02017261A
Other languages
English (en)
French (fr)
Other versions
EP1287977A2 (de
EP1287977B1 (de
Inventor
Jürgen Hinzpeter
Ulrich Zeuschner
Ingo Schmidt
Thomas Pannewitz
Udo Baltruschat
Thorsten Ehrich
Ulf Hauschild
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
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 filed Critical Fette GmbH
Publication of EP1287977A2 publication Critical patent/EP1287977A2/de
Publication of EP1287977A3 publication Critical patent/EP1287977A3/de
Application granted granted Critical
Publication of EP1287977B1 publication Critical patent/EP1287977B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B22F3/004—Filling molds with powder
    • 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
    • B30B11/022—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 whereby the material is subjected to vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/22—Control arrangements for fluid-driven presses controlling the degree of pressure applied by the ram during the pressing stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Control Of Presses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Verfahren zur Minimierung der Streuung der maximalen Presskräfte beim Verpressen von Pulver, insbesondere Metallpulver, mit Hilfe einer Pulverpresse, die eine Matrizenplatte, einen Oberstempel und mindestens einen Unterstempel aufweist, die einer Matrizenbohrung zugeordnet und jeweils von einem hydraulischen Pressenzylinder betätigbar sind sowie einen auf der Matrizenplatte entlang eines vorgegebenen Weges bewegbaren Füllschuh für die Befüllung der Matrizenbohrung mit dem Pulver, bei dem die maximale Presskraft zumindest des Oberstempels bei Erreichen einer vorgegebenen Position gemessen wird, der Füllschuh, die Matrizenplatte, Ober- und/oder Unterstempel bei der Befüllung und/oder zu Beginn des Pressvorgangs mit einer vorgegebenen Frequenz und Amplitude gerüttelt werden und bei der ferner die Füllzeit bzw. der zeitliche Bewegungsablauf des Füllschuhs vorgegeben ist, wobei in Intervallen die Häufigkeitsverteilung der maximalen Presskraftwerte ermittelt wird und daraus die Standardabweichung für die maximale Presskraft, die Standardabweichung ggf. mit einem vorgegebenen Wert verglichen wird, die Rüttelparameter, die Füllzeit, der zeitliche Bewegungsablauf und/oder der Wegverlauf des Füllschuhs nach einem vorgegebenen Programm geändert werden, bis die Standardabweichung den vorgegebenen Wert bzw. ein Minimum erreicht hat.
EP02017261A 2001-08-31 2002-08-01 Verfahren und Vorrichtung zur Minimierung der Streuung der maximalen Presskräfte in einer Pulverpresse Expired - Lifetime EP1287977B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10142623A DE10142623C2 (de) 2001-08-31 2001-08-31 Verfahren und Vorrichtung zur Minimierung der Streuung der maximalen Presskräfte in einer Pulverpresse
DE10142623 2001-08-31

Publications (3)

Publication Number Publication Date
EP1287977A2 EP1287977A2 (de) 2003-03-05
EP1287977A3 true EP1287977A3 (de) 2004-01-28
EP1287977B1 EP1287977B1 (de) 2008-03-12

Family

ID=7697203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02017261A Expired - Lifetime EP1287977B1 (de) 2001-08-31 2002-08-01 Verfahren und Vorrichtung zur Minimierung der Streuung der maximalen Presskräfte in einer Pulverpresse

Country Status (5)

Country Link
US (1) US7147820B2 (de)
EP (1) EP1287977B1 (de)
AT (1) ATE388809T1 (de)
DE (2) DE10142623C2 (de)
ES (1) ES2304236T3 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1964664B1 (de) * 2007-02-27 2013-11-20 Maschinenfabrik Lauffer GmbH & Co. KG Verfahren zur Pressensteuerung einer Pulverpresse bei der Herstellung von Formlingen
JP6281482B2 (ja) * 2013-12-24 2018-02-21 信越化学工業株式会社 希土類焼結磁石の製造方法及び成形装置
JP6402615B2 (ja) * 2013-12-24 2018-10-10 信越化学工業株式会社 希土類焼結磁石の製造方法及び成形装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100598A (en) * 1975-09-05 1978-07-11 Hoffmann-La Roche Inc. Tablet press related instrumentation for use in development and control of formulations of pharmaceutical granulations
US4238431A (en) * 1977-09-22 1980-12-09 Wilhelm Fette Gmbh Method for the production of tablets and a tablet press
DE19903417A1 (de) * 1999-01-29 2000-08-10 Fette Wilhelm Gmbh Verfahren zum Befüllen von Hydraulikpressen mit Pulvern

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549642A (en) * 1945-08-24 1951-04-17 Gen Bronze Corp Press with vibrating die for forming powder metal blanks
US3593366A (en) * 1968-12-11 1971-07-20 Wolverine Pentronix Multiple punch tool set for powder compacting press
US3640654A (en) * 1970-06-25 1972-02-08 Wolverine Pentronix Die and punch assembly for compacting powder and method of assembly
US4041123A (en) * 1971-04-20 1977-08-09 Westinghouse Electric Corporation Method of compacting shaped powdered objects
US3730659A (en) * 1971-10-04 1973-05-01 Wolverine Pentronix Powder dispenser for a powder compacting press
US3788787A (en) * 1971-11-26 1974-01-29 H Silbereisen Hydraulic metal powder press
US4008023A (en) * 1972-03-27 1977-02-15 United Technologies Corporation Mold pack for making metal powder articles
BG18244A1 (de) * 1973-04-25 1974-10-25
US3890413A (en) * 1974-08-15 1975-06-17 Hydramet American Inc Apparatus and method for compacting particulate materials
FR2302287A1 (fr) * 1975-02-27 1976-09-24 Commissariat Energie Atomique Procede et appareillage de frittage sous charge
US4260346A (en) * 1979-10-09 1981-04-07 Anderson Jr Raymond B Press assembly for powder material
US4583966A (en) * 1982-10-13 1986-04-22 Beloit Corporation Method of filling calender/embosser rolls using vibrations
DE3639918A1 (de) * 1986-03-26 1987-10-08 Thomas Eng Inc Vorrichtung zur steuerung und ueberwachung einer rotationstablettierpresse
JPH0780069B2 (ja) * 1986-11-25 1995-08-30 敏彦 朝見 振動プレス成形機
US4946634A (en) * 1987-04-16 1990-08-07 Gte Products Corporation Powder compacting press to control green density distribution in parts
DE3919821C2 (de) * 1989-06-15 1994-04-07 Mannesmann Ag Verfahren und Vorrichtung zum Herstellen von maßhaltigen Preßlingen
US5672363A (en) * 1990-11-30 1997-09-30 Intermetallics Co., Ltd. Production apparatus for making green compact
US5211964A (en) * 1991-05-20 1993-05-18 Westinghouse Electric Corp. Press machine with means to adjust punching force
DE19717217C2 (de) * 1997-04-24 1999-12-02 Fette Wilhelm Gmbh Verfahren und Vorrichtung zur Herstellung von Preßlingen aus Hartmetall, Keramik, Sintermetall oder dergleichen
US6432158B1 (en) * 1999-10-25 2002-08-13 Sumitomo Special Metals Co., Ltd. Method and apparatus for producing compact of rare earth alloy powder and rare earth magnet
DE19955196A1 (de) * 1999-11-16 2001-05-23 Korsch Pressen Ag Verfahren zum Konstanthalten der Bruchhärte von Tabletten
KR20010086905A (ko) * 2000-03-04 2001-09-15 김영정 양압 성형시스템

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100598A (en) * 1975-09-05 1978-07-11 Hoffmann-La Roche Inc. Tablet press related instrumentation for use in development and control of formulations of pharmaceutical granulations
US4238431A (en) * 1977-09-22 1980-12-09 Wilhelm Fette Gmbh Method for the production of tablets and a tablet press
DE19903417A1 (de) * 1999-01-29 2000-08-10 Fette Wilhelm Gmbh Verfahren zum Befüllen von Hydraulikpressen mit Pulvern

Also Published As

Publication number Publication date
DE50211876D1 (de) 2008-04-24
US7147820B2 (en) 2006-12-12
ATE388809T1 (de) 2008-03-15
ES2304236T3 (es) 2008-10-01
EP1287977A2 (de) 2003-03-05
DE10142623A1 (de) 2003-04-03
US20030047089A1 (en) 2003-03-13
EP1287977B1 (de) 2008-03-12
DE10142623C2 (de) 2003-11-06

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