EP3253565A1 - Presse à poudre avec poinçon inférieur de forme conique, procédé pour faire fonctionner une presse à poudre, poinçon inférieur d'une presse à poudre et produit-programme informatique pour déplacer le poinçon inférieur d'une presse à poudre - Google Patents

Presse à poudre avec poinçon inférieur de forme conique, procédé pour faire fonctionner une presse à poudre, poinçon inférieur d'une presse à poudre et produit-programme informatique pour déplacer le poinçon inférieur d'une presse à poudre

Info

Publication number
EP3253565A1
EP3253565A1 EP16702397.7A EP16702397A EP3253565A1 EP 3253565 A1 EP3253565 A1 EP 3253565A1 EP 16702397 A EP16702397 A EP 16702397A EP 3253565 A1 EP3253565 A1 EP 3253565A1
Authority
EP
European Patent Office
Prior art keywords
powder press
punch
lower punch
press according
powder
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
EP16702397.7A
Other languages
German (de)
English (en)
Other versions
EP3253565B1 (fr
Inventor
Eberhard Ernst
Rainer Schmitt
Hasim Tekines
Christian Siegert
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.)
GKN Powder Metallurgy Engineering GmbH
Original Assignee
GKN Sinter Metals Engineering 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 GKN Sinter Metals Engineering GmbH filed Critical GKN Sinter Metals Engineering GmbH
Publication of EP3253565A1 publication Critical patent/EP3253565A1/fr
Application granted granted Critical
Publication of EP3253565B1 publication Critical patent/EP3253565B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B30B11/02—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
    • 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
    • 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
    • B22F2003/033—Press-moulding apparatus therefor with multiple punches working in the same direction

Definitions

  • the present invention relates to a powder press with conical lower punches and a manufacturing method and a compact produced with the above-mentioned powder press.
  • a press assembly is critical to the possibility of what parts can be pressed and pressed at what time.
  • DE 10 2014 003 726 of the Applicant discloses a press for producing dimensionally stable green compacts, in which the used tool assemblies have a design optimization for the compensation of elasticity between individual tool planes. For this purpose, a certain technical effort in the design as well as in the production of the tools is necessary.
  • the object of the present invention is to provide a simplified press assembly that can be achieved in the production by conventional methods and shortens a tool change in addition to time during setup.
  • each lower punch has a longitudinal extent, in particular a cylindrical longitudinal extent, which is guided by a die, preferably followed by a conical widening at each longitudinal extent.
  • a respective cone angle of the lower punch increases from the inside to the outside, while the respective longitudinal extent of the lower punch decreases from the inside to the outside.
  • a punch holder directly adjoins the conical widening.
  • An embodiment provides, for example, that the conical broadening of the lower punch merges into a cylindrical portion, wherein the cylindrical portion has fastening means for a punch holder.
  • a punch holder is connected directly to a lower punch by means of a bayonet closure.
  • a connection between punch holder and lower punch takes place without pressure plate and clamping plate.
  • Waiver of a perfect elasticity compensation the compensation is usually made by the position control of the machine.
  • the tool assemblies can be both one-piece, as well as multipoint by connection technology from possibly head piece, connecting element and foot piece.
  • the lower punches are constructed rotationally symmetrical.
  • a powder press in which a punch has a longitudinal extent, in particular a cylindrical longitudinal extension, which extends into the die, wherein at the longitudinal extension connects an extension.
  • a plurality of interleaved upper punches are constructed as the above or below described lower punches.
  • the upper punch and / or the lower punch are made in one piece. There is also the possibility that the upper punch and / or the lower punch is made in several parts.
  • a compact of metal powder is produced by the method or the powder press.
  • a lower punch of a powder press is proposed, wherein the lower punch is produced by means of a machining method, by means of a primary molding method, a pressing, a cold forming and / or a casting.
  • FIG. 3 shows an enlargement of the illustration from FIG. 2 about a correspondingly adapted upper punch
  • Fig. 4 A schematic view of the tool structure with a conical lower punch and attached punch holder.
  • Fig. 1 shows a powder press as known from the prior art. This has a tool with die, top and bottom punches as well as mandrels. Accessories include clamping plates, pressure plates and punch holders.
  • the structure of the stamp shows on the one hand the necessary size, which must be provided for such a powder press. On the other hand, the set-up requires a certain amount of effort, since the clamping plates and pressure plates have to be installed for this purpose.
  • Fig. 2 shows an exemplary, schematic tool structure with a conical base.
  • the lower punches have an upper portion, the punch head 1, which is preferably cylindrical and extends into the die.
  • Each lower punch then has a conical enlargement, followed by a cylindrical section in each case.
  • the respective cone angle ie the angle which is enclosed by the angle of the conical shape to the vertical axis 2, is preferably smaller from outside to inside In other words, a respective cone angle of the lower punches increases from the inside to the outside.
  • the respective upper area becomes smaller from the inside to the outside.
  • FIG. 3 shows a proposed tool design for tapered lower punches, consisting here of die M, three lower punches UE1, UE2, UE3 and upper punch OS. While the three lower punches are constructed analogously to those of FIG. 2, the upper punch OS can have a geometry which is the reverse of the lower punches but has comparable geometry.
  • FIG. 4 shows a tool structure for tapered lower punches, comprising a die and three lower punches, which are connected by a fastening means, here in the form of a bayonet closure 3.1, 3.2, 3.3, with the punch holders SH1, SH2, SH3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)

Abstract

L'invention concerne une presse à poudre équipée d'une structure d'outil, comportant un poinçon inférieur de forme conique (UE) équipé de poinçons inférieurs insérés les uns dans les autres, chaque poinçon inférieur comportant une extension longitudinale, en particulier une extension longitudinale cylindrique, qui est guidée à travers une matrice (M), un élargissement de forme conique étant raccordé à de préférence chaque extension longitudinale, chaque angle conique du poinçon inférieur augmentant de préférence de l'intérieur vers l'extérieur.
EP16702397.7A 2015-02-02 2016-01-29 Presse à poudre avec poinçon inférieur de forme conique, procédé pour faire fonctionner une presse à poudre, poinçon inférieur d'une presse à poudre et produit-programme informatique pour déplacer le poinçon inférieur d'une presse à poudre Active EP3253565B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015201785.0A DE102015201785A1 (de) 2015-02-02 2015-02-02 Pulverpresse mit kegeligem Unterstempel
PCT/EP2016/051932 WO2016124497A1 (fr) 2015-02-02 2016-01-29 Presse à poudre avec poinçon inférieur de forme conique, procédé pour faire fonctionner une presse à poudre, poinçon inférieur d'une presse à poudre et produit-programme informatique pour déplacer le poinçon inférieur d'une presse à poudre

Publications (2)

Publication Number Publication Date
EP3253565A1 true EP3253565A1 (fr) 2017-12-13
EP3253565B1 EP3253565B1 (fr) 2024-03-20

Family

ID=55273259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16702397.7A Active EP3253565B1 (fr) 2015-02-02 2016-01-29 Presse à poudre avec poinçon inférieur de forme conique, procédé pour faire fonctionner une presse à poudre, poinçon inférieur d'une presse à poudre et produit-programme informatique pour déplacer le poinçon inférieur d'une presse à poudre

Country Status (5)

Country Link
US (1) US20180022050A1 (fr)
EP (1) EP3253565B1 (fr)
CN (1) CN107427916B (fr)
DE (1) DE102015201785A1 (fr)
WO (1) WO2016124497A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014003726A1 (de) * 2014-03-18 2015-09-24 Gkn Sinter Metals Engineering Gmbh Presse zum Herstellen maßhaltiger Grünlinge und Verfahren zum Herstellen
DE102015201966A1 (de) 2015-02-04 2016-08-04 Gkn Sinter Metals Engineering Gmbh Pulverpresse mit kegeligem Unterbau
DE102015012004A1 (de) 2015-09-18 2017-03-23 Gkn Sinter Metals Engineering Gmbh Sinterpresse mit axial kontrollierter Verformung und Verfahren hierzu
DE102015012005A1 (de) 2015-09-18 2017-03-23 Gkn Sinter Metals Engineering Gmbh Stempelwerkzeug einer Sinterpresse und Verfahren hierzu
WO2018146181A1 (fr) 2017-02-08 2018-08-16 Gkn Sinter Metals Engineering Gmbh Ensemble d'outils à compensation de déviation

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556951A (en) * 1944-06-05 1951-06-12 Stokes Machine Co Powdered material compacting press
US4153399A (en) * 1977-09-08 1979-05-08 Ptx-Pentronix, Inc. Multiple punch tool set for powder compacting press
DE3241383C2 (de) * 1982-11-09 1986-09-04 Institut po Metalosnanie i Technologia na Metalite, Sofia/Sofija Vorrichtung zum Umformen von Metall durch Fließpressen
GB2129724B (en) * 1982-11-11 1986-01-29 Inst Po Metalloznanie I Tekno Extrusion and stamping of material
JPH05140609A (ja) * 1991-02-08 1993-06-08 Keita Hirai 段付品汎用成型プレス
JPH0788699A (ja) * 1993-09-24 1995-04-04 Mitsubishi Materials Corp 金型装置
JP3158244B2 (ja) * 1996-11-22 2001-04-23 三菱マテリアル株式会社 多段ヘリカルギアの製造方法及びその粉末成形用金型
SE515822C2 (sv) * 1999-12-30 2001-10-15 Skf Nova Ab Metod och anordning för kompaktering av pulvermetallkroppar
JP2004291046A (ja) * 2003-03-27 2004-10-21 Sumitomo Denko Shoketsu Gokin Kk 粉末成形における成形体のクラック防止方法及び装置
DE102005044759B4 (de) * 2005-09-20 2007-07-12 Sms Meer Gmbh Vorrichtung zum Herstellen eines Formteils
DE102007010360A1 (de) * 2007-03-03 2008-09-04 Dorst Technologies Gmbh & Co. Kg Pressstempel-Befestigungsvorrichtung und Verfahren zum Befestigen eines Stempels in einer Presse
DE102010051513A1 (de) * 2010-11-16 2012-05-16 Dorst Technologies Gmbh & Co. Kg Keramikpulver- und/oder Metallpulver-Pressenwerkzeug, Keramikpulver- und/oder Metallpulver-Presse, modulares System mit einem solchen Pressenwerkzeug, Verfahren zum Zusammensetzen eines solchen Pressenwerkzeugs
DE102013006831B4 (de) * 2013-04-22 2015-05-28 Schuler Pressen Gmbh Spannsystem zum Spannen eines Stempels an einem Stößel einer Fließdruckpresse
CN103331444B (zh) * 2013-07-05 2015-09-30 益阳市新纪元粉末冶金有限公司 粉末冶金制品压制成型模具及应用和成型脱模方法
CN203651029U (zh) * 2013-12-24 2014-06-18 北京国药龙立自动化技术有限公司 单工位等密度压机
DE102014003726A1 (de) 2014-03-18 2015-09-24 Gkn Sinter Metals Engineering Gmbh Presse zum Herstellen maßhaltiger Grünlinge und Verfahren zum Herstellen
DE102015201966A1 (de) * 2015-02-04 2016-08-04 Gkn Sinter Metals Engineering Gmbh Pulverpresse mit kegeligem Unterbau
DE102015012004A1 (de) * 2015-09-18 2017-03-23 Gkn Sinter Metals Engineering Gmbh Sinterpresse mit axial kontrollierter Verformung und Verfahren hierzu
DE102015012005A1 (de) * 2015-09-18 2017-03-23 Gkn Sinter Metals Engineering Gmbh Stempelwerkzeug einer Sinterpresse und Verfahren hierzu

Also Published As

Publication number Publication date
CN107427916A (zh) 2017-12-01
EP3253565B1 (fr) 2024-03-20
WO2016124497A1 (fr) 2016-08-11
US20180022050A1 (en) 2018-01-25
DE102015201785A1 (de) 2016-08-04
CN107427916B (zh) 2020-09-29

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