EP1566231A2 - Presse à poudre - Google Patents
Presse à poudre Download PDFInfo
- Publication number
- EP1566231A2 EP1566231A2 EP05001884A EP05001884A EP1566231A2 EP 1566231 A2 EP1566231 A2 EP 1566231A2 EP 05001884 A EP05001884 A EP 05001884A EP 05001884 A EP05001884 A EP 05001884A EP 1566231 A2 EP1566231 A2 EP 1566231A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- punches
- press
- hydraulic cylinder
- die
- powder press
- 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
Images
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
- 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
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0094—Press load monitoring means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/06—Platens or press rams
- B30B15/065—Press rams
- B30B15/067—Press rams with means for equalizing the pressure exerted by a plurality of press rams
-
- 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
-
- 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 powder press for the production of compacts from powdered press material according to the claim.
- molded parts made of hard metal, ceramic, sintered metals or the like to produce with the help of presses.
- the powdery or granular material is formed by pressing into a molding, which then undergoes a sintering process is subjected.
- a press has a top and a bottom stamp, with a die or a die hole in a die plate interact.
- the punches are driven by a suitable power drive, either mechanically or hydraulically via suitable hydraulic cylinders. It is known to arrange the die plate firmly and upper and lower punches too move or alternatively to move the die plate and the upper punch to while the lower punch remains stationary.
- Hydraulic presses have the advantage of being relatively freely programmable Press sequence can be achieved.
- DE 4 209 767 C1 discloses the pressing force Measure to obtain the most uniform density within a batch to reach. Depending on the measured pressing force is then a Correction made over the filling for the subsequent compacts. at This method determines the position of the stamps and the associated Pressing force measured. The approach of a certain position leads to a relative high dimensional accuracy, may cause different densities. If, however, the pressing process is terminated at a preset pressing force, there is a risk that the compact has different thicknesses.
- the aim of all procedures is to ensure, by means of appropriate regulatory that even with changing powder within a batch always one same press result is achieved.
- a production cycle consists of several phases: filling the material, moving together the stamp, compression of the press material, press holding time, extension of the compact and its removal.
- the removal is usually by a automatic removal system.
- To increase the output of the press an attempt is made to shorten the times of the individual phases.
- the times for compacting the powder, the press holding time and the time to extend the compact depends on the type of powder used and the geometry of the compact. Too short compaction, press holding and ejection times lead to hairline cracks in the compact, which must be avoided at all costs. For this reason, the output of modern hydraulic powder presses currently at max. 30 pieces per minute limited.
- the invention has for its object to provide a powder press for the production of To create compacts of powdered molding material with which the ejection performance can be significantly increased without a loss of press accuracy must be accepted.
- the powder press according to the invention is a fixed or movable Matrizenplatte provided with at least two matrices or a die with at least two die holes.
- at least two upper punch provided with the matrices or Matrizenbohronne cooperate and act individually or mechanically coupled are. They are operated by two or a single hydraulic cylinder.
- at least two lower punches are provided, which with the matrices or Matrizenbohronne cooperate and each have their own or a common Have drive by means of a hydraulic cylinder.
- the upper stamps are one or two position sensors and the lower one or two position sensors assigned.
- the hydraulic cylinders are assigned a force sensor.
- a process computer for the powder press according to the invention at least three regulators, namely a controller for the hydraulic cylinder of the upper or lower punch and one controller each for the hydraulic cylinders of the or upper stamp.
- the algorithm by which the individual controllers work can be in conventional Be formulated. So z. As a rule after a Kraftweg- or a Force time diagram or after the energy input possible. For all regulations is previously the target diagram with the help of suitable experiments and measurements determined during the actual production is regulated.
- the powder press according to the invention With the aid of the powder press according to the invention, two or more compacts be generated simultaneously, the pressing operations for the individual compacts be influenced separately, whereby z. B. powder variations and tool tolerances be compensated.
- the powder press according to the invention allows thus a large press accuracy by separately influencing the pressing operations.
- the removal of the manufactured compacts by the sampling system can in one or several steps, with the removal in one step because of the shorter cycle time is preferable.
- simultaneous Pressing and removal of several compacts is the output of the press multiplied according to the number of simultaneously pressed compacts without the pressing accuracy suffers.
- a press for pressing powdery press material is schematic shown. It has a fixed die plate 10, the two Matrices 12, 14 each includes a die bore. Above the die plate 10, two upper punches 16 are arranged, which cooperate with the dies 12, 14. The upper punches 16 are mechanically interconnected by a block 18 coupled. The block 18 is actuated by a hydraulic cylinder 20.
- Two lower punches 22 cooperate with the dies 12, 14 and are respectively actuated by a hydraulic cylinder 24 and 26, respectively.
- the upper stamp 16 is a Assigned to position sensor 28 and the hydraulic cylinder 20 is a force sensor 30th assigned.
- the actuation of the hydraulic cylinder and the upper punch 16 takes place by means of a regulator 32 in accordance with the values of force sensor 30 and position sensor 28 according to a predetermined algorithm, for example a force path or force time chart.
- As an actuator serves a control valve 34 for the Hydraulic cylinder 20.
- the lower punches 22 each have their own position sensor 36 or assigned to 38 and applied by the hydraulic cylinders 24, 26 force is determined with separate force sensors 40 and 42, respectively.
- the algorithm for the controllers 44, 46 corresponds to z. B. the after the Regulator 32 works.
- the manipulated variables of the controllers 44 and 46 are via control valves 48 and 50 are given to the hydraulic cylinders 24, 26.
- a hydraulic drive assembly 50 has two concentrically arranged annular piston 52, 56 which in corresponding Ring cylinders are guided.
- annular piston 52, 56 which in corresponding Ring cylinders are guided.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004008322A DE102004008322B4 (de) | 2004-02-20 | 2004-02-20 | Pulverpresse |
DE102004008322 | 2004-02-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1566231A2 true EP1566231A2 (fr) | 2005-08-24 |
EP1566231A3 EP1566231A3 (fr) | 2007-01-03 |
EP1566231B1 EP1566231B1 (fr) | 2010-09-08 |
Family
ID=34706867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05001884A Not-in-force EP1566231B1 (fr) | 2004-02-20 | 2005-01-29 | Presse à poudre |
Country Status (4)
Country | Link |
---|---|
US (1) | US7351048B2 (fr) |
EP (1) | EP1566231B1 (fr) |
AT (1) | ATE480351T1 (fr) |
DE (2) | DE102004008322B4 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010081650A1 (fr) * | 2009-01-15 | 2010-07-22 | Gkn Sinter Metals Holding Gmbh | Procédé pour faire fonctionner une presse pour produire des ébauches de compact de hauteur constante à partir de substances pulvérulentes, appareil de commande pour presse de ce type et presse appropriée |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BRPI0710071A2 (pt) * | 2006-02-22 | 2011-08-02 | Hydraform Developments Proprietary Ltd | máquina automática de fabricar blocos |
DE102006020213B4 (de) * | 2006-05-02 | 2009-09-10 | Fette Gmbh | Presse zur Herstellung von Preßlingen aus Pulvermaterial |
DE102008035301B3 (de) * | 2008-07-29 | 2010-03-25 | Fette Gmbh | Pulverpresse |
US9314842B2 (en) * | 2011-12-02 | 2016-04-19 | Wildcat Discovery Technologies, Inc. | Hot pressing apparatus and method for same |
DE102012019312A1 (de) * | 2012-10-01 | 2014-04-03 | Dorst Technologies Gmbh & Co. Kg | Verfahren zum Steuern einer Keramik- und/oder Metallpulver-Presse bzw. Keramik- und/oder Metallpulver-Presse |
DE102014105172B4 (de) * | 2014-04-11 | 2023-06-15 | Vacuumschmelze Gmbh & Co. Kg | Verfahren zur simultanen herstellung von wenigstens zwei permanentmagneten |
DE102015101586B4 (de) * | 2015-02-04 | 2019-02-21 | Fette Compacting Gmbh | Pulverpresse zur Herstellung von Presslingen aus pulverförmigem Pressmaterial |
JP6308195B2 (ja) * | 2015-10-06 | 2018-04-11 | トヨタ自動車株式会社 | 粉末成形装置の制御方法 |
CN109822964A (zh) * | 2019-03-08 | 2019-05-31 | 萍乡鹏华液压机械制造有限公司 | 全自动碳化钨、碳化钛粉液压机 |
CN110385882B (zh) * | 2019-06-17 | 2021-07-23 | 国网湖南省电力有限公司 | 氧化锌粉料压接成型装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1759429C3 (de) * | 1968-04-30 | 1973-12-20 | Villeroy & Boch Keramische Werke Kg, 6642 Mettlach | Vorrichtung zum gleichzeitigen Pressen mehrerer plattenförmiger Presslinge |
US3890413A (en) * | 1974-08-15 | 1975-06-17 | Hydramet American Inc | Apparatus and method for compacting particulate materials |
US4184827A (en) * | 1975-12-16 | 1980-01-22 | General Electric Company | Apparatus for monitoring and controlling the operation of a dual platen press |
DE3939956A1 (de) * | 1989-12-02 | 1991-06-06 | Fette Wilhelm Gmbh | Verfahren und einrichtung zum ueberwachen der presskraefte einer tablettiermaschine |
DE4209767C1 (fr) * | 1992-03-23 | 1993-05-06 | Mannesmann Ag, 4000 Duesseldorf, De | |
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 |
DE19717217C2 (de) * | 1997-04-24 | 1999-12-02 | Fette Wilhelm Gmbh | Verfahren und Vorrichtung zur Herstellung von Preßlingen aus Hartmetall, Keramik, Sintermetall oder dergleichen |
JP4144072B2 (ja) * | 1998-07-09 | 2008-09-03 | 日立金属株式会社 | 磁性粉体成形装置及び磁性粉体成形方法 |
JP2975346B1 (ja) * | 1998-07-29 | 1999-11-10 | 株式会社菊水製作所 | 粉末圧縮成形機 |
US6531090B2 (en) * | 2000-02-17 | 2003-03-11 | Sumitomo Special Metals Co., Ltd. | Method for producing powder compact and method for manufacturing magnet |
DE10010671C2 (de) * | 2000-03-04 | 2002-03-14 | Fette Wilhelm Gmbh | Verfahren zur Herstellung von Preßteilen durch Pressen von Metallpulver und anschließendes Sintern des Preßlings |
AU2002219865A1 (en) * | 2000-11-14 | 2002-05-27 | Materials Innovation Inc. | Hydraulic modular manufacturing system |
DE10142772C2 (de) * | 2001-08-31 | 2003-09-25 | Fette Wilhelm Gmbh | Verfahren zur Herstellung von Pressteilen in einer Pulverpresse |
US7150617B1 (en) * | 2003-11-17 | 2006-12-19 | The United States Of America As Represented By The Secretary Of The Navy | Multiple position press |
-
2004
- 2004-02-20 DE DE102004008322A patent/DE102004008322B4/de not_active Expired - Fee Related
-
2005
- 2005-01-29 AT AT05001884T patent/ATE480351T1/de active
- 2005-01-29 EP EP05001884A patent/EP1566231B1/fr not_active Not-in-force
- 2005-01-29 DE DE502005010195T patent/DE502005010195D1/de active Active
- 2005-02-16 US US11/058,967 patent/US7351048B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010081650A1 (fr) * | 2009-01-15 | 2010-07-22 | Gkn Sinter Metals Holding Gmbh | Procédé pour faire fonctionner une presse pour produire des ébauches de compact de hauteur constante à partir de substances pulvérulentes, appareil de commande pour presse de ce type et presse appropriée |
Also Published As
Publication number | Publication date |
---|---|
DE102004008322A1 (de) | 2005-09-08 |
EP1566231A3 (fr) | 2007-01-03 |
US7351048B2 (en) | 2008-04-01 |
US20050186300A1 (en) | 2005-08-25 |
ATE480351T1 (de) | 2010-09-15 |
DE102004008322B4 (de) | 2008-11-27 |
EP1566231B1 (fr) | 2010-09-08 |
DE502005010195D1 (de) | 2010-10-21 |
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