EP0403038A3 - Method and apparatus for making dimensionally stable pressed articles - Google Patents

Method and apparatus for making dimensionally stable pressed articles Download PDF

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Publication number
EP0403038A3
EP0403038A3 EP19900250137 EP90250137A EP0403038A3 EP 0403038 A3 EP0403038 A3 EP 0403038A3 EP 19900250137 EP19900250137 EP 19900250137 EP 90250137 A EP90250137 A EP 90250137A EP 0403038 A3 EP0403038 A3 EP 0403038A3
Authority
EP
European Patent Office
Prior art keywords
dies
pressed articles
dimensionally stable
carrying
theoretical
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
EP19900250137
Other languages
German (de)
French (fr)
Other versions
EP0403038A2 (en
EP0403038B1 (en
Inventor
Gerd Dr.-Ing. Hinzmann
Norbert Dipl.-Ing. Nies
Siegfried Ing. Radewahn (Grad.)
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to AT90250137T priority Critical patent/ATE94464T1/en
Publication of EP0403038A2 publication Critical patent/EP0403038A2/en
Publication of EP0403038A3 publication Critical patent/EP0403038A3/en
Application granted granted Critical
Publication of EP0403038B1 publication Critical patent/EP0403038B1/en
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
    • B22F3/02—Compacting only
    • 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

Abstract

The invention relates to a method and an apparatus for making dimensionally stable pressed articles from pulverulent compositions, in particular from metal powder, on a press in a mould under the action of at least one lower die and one upper die, the position of the components carrying the dies and/or of the mould being measured relative to a fixed point and the components carrying the dies being moved, in each case, into a theoretical position relative to each other, these positions corresponding to the theoretical dimensions of the pressed article in the pressing direction, taking into account the lengths of the dies. In order to provide a method, and an apparatus for carrying out the method, by means of which the accuracy of the geometry of the pressed articles can be further improved, even in the case of pressed articles with a plurality of vertical steps, it is proposed that, in the final pressing position, the theoretical position of at least one of the components carrying the dies is corrected, in the pressing direction, by an amount which corresponds to the elastic deformation of the die or dies as a consequence of the action of the compressive force. <IMAGE>
EP90250137A 1989-06-15 1990-05-28 Method and apparatus for making dimensionally stable pressed articles Expired - Lifetime EP0403038B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90250137T ATE94464T1 (en) 1989-06-15 1990-05-28 METHOD AND APPARATUS FOR THE MANUFACTURE OF MEASUREMENT PRESSINGS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3919821A DE3919821C2 (en) 1989-06-15 1989-06-15 Method and device for producing dimensionally stable compacts
DE3919821 1989-06-15

Publications (3)

Publication Number Publication Date
EP0403038A2 EP0403038A2 (en) 1990-12-19
EP0403038A3 true EP0403038A3 (en) 1991-03-27
EP0403038B1 EP0403038B1 (en) 1993-09-15

Family

ID=6382945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90250137A Expired - Lifetime EP0403038B1 (en) 1989-06-15 1990-05-28 Method and apparatus for making dimensionally stable pressed articles

Country Status (5)

Country Link
US (1) US5043111A (en)
EP (1) EP0403038B1 (en)
JP (1) JPH0780073B2 (en)
AT (1) ATE94464T1 (en)
DE (2) DE3919821C2 (en)

Families Citing this family (33)

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JPH07112638B2 (en) * 1991-05-02 1995-12-06 株式会社ヨシツカ精機 Pressure control method for powder molding press
USRE35506E (en) * 1991-11-12 1997-05-13 Chemplex Industries, Inc. Powder compacting press apparatus and methods
US5202067A (en) * 1991-11-12 1993-04-13 Chemplex Industries, Inc. Powder compacting press apparatus and methods
CH683243A5 (en) * 1991-11-15 1994-02-15 Laeis & Bucher Gmbh Method for controlling and / or regulating the pressing operation of a stone press.
US5455002A (en) * 1992-03-12 1995-10-03 Aida Engineering, Ltd. Plastic working method for holed metal parts
DE4209767C1 (en) * 1992-03-23 1993-05-06 Mannesmann Ag, 4000 Duesseldorf, De
EP0680404B1 (en) * 1993-11-24 2000-03-29 Stackpole Limited Undercut split die
EP0680405B1 (en) * 1993-11-24 1999-08-04 Stackpole Limited Phased split die
US5580586A (en) * 1994-03-17 1996-12-03 Tamagawa Machinery Co., Ltd. Die control speed rate conversion device for powder mold press
DE19502596C2 (en) * 1995-01-28 1997-08-28 Fette Wilhelm Gmbh Measuring device and computer for checking the tablets of the current production made on a rotary press
US5840348A (en) * 1995-09-15 1998-11-24 Ultrapure Systems, Inc. Automated carbon block molding machine and method
US6165400A (en) * 1996-05-09 2000-12-26 Stackpole Limited Compacted-powder opposed twin-helical gears and method
US6440357B1 (en) 1996-05-09 2002-08-27 Stackpole Limited Compacted-powder opposed twin-helical gears and method
DE19717217C2 (en) * 1997-04-24 1999-12-02 Fette Wilhelm Gmbh Method and device for producing compacts from hard metal, ceramic, sintered metal or the like
DE19846210A1 (en) * 1998-10-07 2000-04-13 Dorst Masch & Anlagen Press for the production of moldings
US6294113B1 (en) * 1998-11-16 2001-09-25 General Electric Company Touch sensing method
DE10010671C2 (en) 2000-03-04 2002-03-14 Fette Wilhelm Gmbh Process for producing pressed parts by pressing metal powder and then sintering the compact
GB2360825B (en) * 2000-03-30 2004-11-17 Formflo Ltd Gear wheels roll formed from powder metal blanks
JP3687492B2 (en) * 2000-06-21 2005-08-24 株式会社村田製作所 Press molding method of dielectric block
DE10051236A1 (en) 2000-10-16 2002-04-25 Dorst Masch & Anlagen Method and device for determining press parameters for pressing complex compacts
DE10135283C2 (en) * 2001-07-19 2003-09-18 Fette Wilhelm Gmbh Process for pressing powder material
DE10135523C2 (en) * 2001-07-20 2003-07-31 Dorst Masch & Anlagen Press device for producing dimensionally stable compacts from powdered metal
DE10142623C2 (en) * 2001-08-31 2003-11-06 Fette Wilhelm Gmbh Method and device for minimizing the spread of the maximum pressing forces in a powder press
DE10142773C1 (en) * 2001-08-31 2003-03-06 Fette Wilhelm Gmbh Hydraulic press for pressing metal powder
DE10151858A1 (en) * 2001-10-24 2003-05-08 Dorst Masch & Anlagen Method for setting or monitoring a press tool and press tool or press control device therefor
DE10212315B4 (en) * 2002-03-20 2004-04-29 Wilhelm Fette Gmbh Position measuring system for a powder press
DE10254656B4 (en) 2002-11-22 2005-10-13 Dorst Technologies Gmbh & Co. Kg Press device for producing dimensionally stable compacts with central punch support
DE10355963A1 (en) * 2002-12-02 2004-06-24 Mold-Masters Limited, Georgetown Valve pin actuating apparatus for injection molding apparatus includes actuator, linkage element with mechanically upstream/downstream connectors and stop configured to engage a limit surface to limit the rotation angle of linkage element
DE10301224A1 (en) * 2003-01-15 2004-08-05 Maschinenfabrik Lauffer Gmbh & Co Kg Process for regulating the end position of a press for dimensionally accurate moldings
EP1849590B1 (en) * 2006-04-29 2013-05-15 Fette GmbH Press
DE102010008986A1 (en) * 2010-02-24 2011-08-25 Dorst Technologies GmbH & Co. KG, 82431 Method for press parameter adjustment of a ceramic or metal powder press and ceramic or metal powder press for carrying out the method
US9283693B2 (en) * 2010-07-30 2016-03-15 Lg Innotek Co., Ltd. Hot press sintering apparatus and press element
CN102248705B (en) * 2011-07-01 2014-01-01 宁波市北仑新港冶金机械有限公司 Multi-feeding compound powder forming mechanism for powder forming machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455823A (en) * 1948-03-03 1948-12-07 E J Lavino & Co Control apparatus for molding presses
FR1068723A (en) * 1952-07-25 1954-06-30 L Morane Ets Brick or chipboard press
GB1173235A (en) * 1966-04-18 1969-12-03 Cincinnati Shaper Co Load Indicating Devices for Compacting Press
GB1216397A (en) * 1968-04-02 1970-12-23 Keith Marshall Improvements in or relating to tablet forming machines
DE2924704A1 (en) * 1979-06-19 1981-01-15 Dorst Keramikmasch DEVICE FOR DETERMINING THE HEIGHT OF PRESSED PARTS ON A PRESS, IN PARTICULAR FOR PRESSING PRESSED PARTS FROM POWDER-BASED INITIAL MATERIAL

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045039B2 (en) * 1981-06-12 1985-10-07 株式会社ヨシツカ精機 Abnormality monitoring method in powder molding press
JPS57209798A (en) * 1981-06-19 1982-12-23 Toyota Motor Corp Die position controlling device for liquid pressure type powder press
DE3142126A1 (en) * 1981-10-23 1983-05-11 Dorst-Keramikmaschinen-Bau Otto Dorst U. Dipl.-Ing. Walter Schlegel, 8113 Kochel "PRESS FOR THE PRODUCTION OF TAILORED PRESSINGS FROM POWDER-SHAPED MATERIAL"
JPS59183998A (en) * 1983-04-02 1984-10-19 Hitachi Powdered Metals Co Ltd Device for controlling powder molding press
SE460460B (en) * 1983-07-01 1989-10-16 Convey Teknik Ab PROCEDURE AND DEVICE FOR REGULATED PRESSURE OF POWDER MATERIAL
SE456458B (en) * 1983-07-12 1988-10-03 Nobel Elektronik Ab control loop
FR2570020B1 (en) * 1984-09-11 1988-07-22 Commissariat Energie Atomique AUTOMATIC PRESS
JPS63256296A (en) * 1987-04-13 1988-10-24 Hitachi Metals Ltd Nc mechanical press for powder molding

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455823A (en) * 1948-03-03 1948-12-07 E J Lavino & Co Control apparatus for molding presses
FR1068723A (en) * 1952-07-25 1954-06-30 L Morane Ets Brick or chipboard press
GB1173235A (en) * 1966-04-18 1969-12-03 Cincinnati Shaper Co Load Indicating Devices for Compacting Press
GB1216397A (en) * 1968-04-02 1970-12-23 Keith Marshall Improvements in or relating to tablet forming machines
DE2924704A1 (en) * 1979-06-19 1981-01-15 Dorst Keramikmasch DEVICE FOR DETERMINING THE HEIGHT OF PRESSED PARTS ON A PRESS, IN PARTICULAR FOR PRESSING PRESSED PARTS FROM POWDER-BASED INITIAL MATERIAL

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 68 (M-201)[1213], 19. März 1983; & JP-A-57 209 798 (TOYOTA) 23-12-1982 *
PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 42 (M-359)[1765], 22. Februar 1985; & JP-A-59 183 998 (HITACH) 19-10-1984 *

Also Published As

Publication number Publication date
EP0403038A2 (en) 1990-12-19
DE3919821C2 (en) 1994-04-07
JPH0318499A (en) 1991-01-28
US5043111A (en) 1991-08-27
JPH0780073B2 (en) 1995-08-30
DE59002707D1 (en) 1993-10-21
DE3919821A1 (en) 1990-12-20
EP0403038B1 (en) 1993-09-15
ATE94464T1 (en) 1993-10-15

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