EP1073534B1 - Procede et dispositif de compression a chaud de pieces - Google Patents

Procede et dispositif de compression a chaud de pieces Download PDF

Info

Publication number
EP1073534B1
EP1073534B1 EP99913052A EP99913052A EP1073534B1 EP 1073534 B1 EP1073534 B1 EP 1073534B1 EP 99913052 A EP99913052 A EP 99913052A EP 99913052 A EP99913052 A EP 99913052A EP 1073534 B1 EP1073534 B1 EP 1073534B1
Authority
EP
European Patent Office
Prior art keywords
ejector
hot
die
liquid
workpiece
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.)
Expired - Lifetime
Application number
EP99913052A
Other languages
German (de)
English (en)
Other versions
EP1073534A1 (fr
Inventor
Raymond SCHÖNENBERGER
Andreas Matt
Michael Suter
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.)
Hatebur Umformmaschinen AG
Original Assignee
Hatebur Umformmaschinen 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 Hatebur Umformmaschinen AG filed Critical Hatebur Umformmaschinen AG
Publication of EP1073534A1 publication Critical patent/EP1073534A1/fr
Application granted granted Critical
Publication of EP1073534B1 publication Critical patent/EP1073534B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/04—Shaping in the rough solely by forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B21J13/14—Ejecting devices

Definitions

  • the present invention relates to a method for hot pressing workpieces and a hot forming machine to carry out this procedure as described in the preambles of independent claims 1 and 4 defined (see e.g. US-A-3 120 769).
  • a multi-stage hot forming machine in which the scale in the die of the first forming station is broken off from the workpiece is in Japanese Utility Model No. 2521909 described.
  • the flaking of the scale inside the die has the disadvantage that the tinder for the most part again is pressed into the workpiece. This has a worse one Surface quality resulted in what a more extensive Machining post-processing and more machining allowance required makes what the material requirement and thus the Cost per workpiece can be increased.
  • hot forming machines where descaling takes place in a separate first forming station he follows.
  • a hot forging press is in CH 594 454 described, in which the workpieces outside be pre-compressed by a die, which is also called free diving, the tinder breaks off and falls off the workpieces. That descaled and pre-compressed workpiece is then with a pair of pliers transported to the second forming station and into the die introduced there, in which it is molded.
  • JP-A-60030545 is a vertical forming machine for the forming of a workpiece in a closed die known.
  • a lowering sled presses first an upper outer stamp in a die against the previous one inserted workpiece. After that, become an upper inner Stamp and a lower inner stamp pressure monitored by pressed into the workpiece at the top or bottom. Ejecting the formed workpiece is finally done by means of of a lower outer stamp.
  • An upsetting of the Workpieces outside the die are not intended.
  • Descaling is the invention of the based on the following task.
  • a procedure has to be created for hot pressing workpieces of the type mentioned at the beginning, in which descaling of the workpieces outside of one Die is made without an additional forming station is needed.
  • Claim 4 relates to an inventive Hot forming machine for carrying out the Process. Preferred design variants result from the dependent claims.
  • the essence of the invention is that in a method for hot pressing of workpieces, in which a Forging temperature of a heated workpiece outside a die descaled by pre-compression using a stamp and then into one or more matrices in the desired shape is pressed, pre-upsetting and that Molding in the first or only die through the same Press stamp in the same movement cycle of the press stamp he follows.
  • a workpiece to be pressed in a single forming station with a single press ram in a movement cycle first outside one Matrix pre-compressed and descaled and then in a matrix be compression molded. Because the descaling outside a matrix, i.e. detached, is done, the chipped Tinder not pressed back into the workpiece, like this that its surface quality is not affected.
  • Hot forming machine saved a forming station and also a self-centering tongs is not necessary as the transport to the next one Forming station only after pressing in the die takes place, after which the workpieces have a defined outer contour have.
  • the hot pressing process according to the invention thus combines the advantages of the two known, described above Descaling processes without their disadvantages exhibit.
  • a preferred embodiment of a hot forming machine for carrying out the method according to the invention at least one die, a corresponding off and retractable ejector and a forward and backward movable Press temple.
  • means are available with which the retraction of the extended ejector through the forward moving ram about Workpiece arranged between ejector and ram is so delayed that the workpiece is outside the die is pre-compressible.
  • the means of delaying the ejector rebound and the insertion of the workpiece into the die for example hydraulic, pneumatic, mechanical or electromechanical means.
  • Hydraulic or pneumatic delay means include in a preferred embodiment, one in one Pressure chamber arranged, directly or indirectly with the ejector connected control piston and means for feeding and discharging liquid or gas into or out of the Pressure chamber.
  • the liquid or gas laxatives are formed such that the liquid or gas discharge partially delayed from the pressure chamber and the repulsion of the control piston and the ejector is delayed.
  • They advantageously comprise a liquid or Gas discharge line, in which a throttle or a pressure relief valve is arranged, which is only at one certain liquid or gas pressure opens, or with a control pin is opened and closed.
  • An advantageous hot forming machine according to the invention with mechanical delay means includes a rotatable Curve for controlling the extension and retraction of the ejector, which are shaped and their rotation with the forward and backward movement of the press stamp is coordinated that the The retracted ejector is pushed back with a delay.
  • the illustrated first embodiment of an inventive Hot-forming machine comprises one by means of a Die holder 6 between an anvil 15 and an anvil cover 18 arranged die 5, which for receiving and Compression molding of a workpiece 4 is used.
  • the bottom of the die 5 has a hole for an extendable and retractable Ejector 7 on, during the pre-upsetting as a pressing resistor for the adjacent workpiece 4, during compression molding as a shaping part for the workpiece 4 and after the compression molding for pushing out the formed workpiece from the die 5 is used.
  • the ejector 7 is with one slidably arranged in a pressure chamber 28
  • Control piston 8 connected to a pressure ring 12 for Adjustment of the ejector position is provided.
  • the pressure chamber 28 is formed in a clamping ring 13 to which the Die holder 6 screwed on a position wedge 19 is.
  • Control piston 8 with an ejector pin 9 and this with an ejector rod 17 connected in a known manner indirectly by means of a curve, not shown, in the direction Die 5 is slidable.
  • the ejector pin 9 is in a deposit 14 performed, which also for receiving Serves pressing forces and abuts a pressure plate 16.
  • a cooling channel 141 In the backing 14 is a cooling channel 141 and in the ejector pin 9, a cooling channel 91 is arranged, over which one axially extending in the control piston 8 and ejector 7 die hole 10 coolant can be supplied.
  • the ejector 7 Outlet openings 11 are provided.
  • the clamping ring 13 with a Coolant relief opening 159 provided by leads the anvil 15.
  • the clamping ring 13 and the anvil cover 18 are dashed with a shown liquid inlet bore 21 and a liquid outlet bore, also shown in dashed lines 24 provided.
  • a liquid supply line 20 is connected, in which a check valve 22 is arranged.
  • a liquid discharge line 23 connected in the one to one Pressure of 350 bar insertable throttle 25 for deceleration the liquid outflow from the pressure chamber 28 is arranged is.
  • the workpiece 4 is pressed by means of a press ram 1, each in two different positions is shown in half. In the upper position it is still undeformed workpiece 4 between one by means of a Tension spring 3 biased towards the die 5 holding pin 2 and the ejector 7 held.
  • the preload on the retaining pin 2 can alternatively also be done by means of air pressure.
  • the punch 1 has the workpiece in the lower position 4 pre-compressed and descaled and begins now to push this into the die 5.
  • the workpiece 4 is moved forward by the Press stamp 1 pre-compressed in that the ejector 7 due to the resistance of the throttle 25 to fluid drainage from the pressure chamber 28 through the control piston 8 is held in its extended position.
  • On easy yielding, i.e. Retracting the ejector 7 during pre-upsetting has no negative impact the descaling and removal of the scale outside of the Die 5.
  • the further moving die 1 in the Die 5 pushed, the resistance of the throttle 25th against a liquid drain through the increasing Pressure is overcome, and compression molded there.
  • the ejector 7 pushes the mold - driven by the Above-mentioned curve, not shown, over the ejector rod 17, the ejector pin 9 and the control piston 8 - the workpiece 4 out of the die 5 so that it for example, can be taken over by transport tongs can.
  • the illustrated second embodiment differs from the first in that in the liquid discharge line 23 instead of a throttle 25, a pressure relief valve 26 is arranged with a control line 27. It can for example a pressure relief valve for up to approx. 350 bar from Bieri, Bern.
  • a pressure relief valve 26 is arranged with a control line 27. It can for example a pressure relief valve for up to approx. 350 bar from Bieri, Bern.
  • the pressure on the control piston 8 and thus in the Pressure chamber 28 and liquid discharge line 23 so strong increases that the previously closed pressure relief valve 26 is opened via the control line 27 and so liquid can drain off.
  • the ejector 7 retracted and the workpiece 4 inserted into the die 5 and molded there.
  • the workpiece 4 and the stamp 1 are shown here at the end of the compression molding.
  • the pressing of the workpiece 4 is two shown at different times.
  • the rear part of the control pin 30 lies on the ejector pin 9 on and its front part closes the liquid discharge line 29 so no liquid from the Pressure chamber 28 can flow away.
  • the ejector rod 17 and the control pin 30 then begin to move backward and the workpiece 4 is then moved forward by the Press stamp 1 pre-compressed until finally the situation shown in the lower half of the figure is reached, i.e. the workpiece 4 pre-compressed and descaled and the control pin 30 is immediately in front of it, to open the liquid discharge line 29.
  • the ejector rod 17 and the control pin 30 are still moved further backward so that through the liquid discharge line 29 Drain liquid from the pressure chamber 28 can, whereby the control piston 8 and the ejector 7th Direction ejector rod 17 and the workpiece 4 in the die 5 can be pushed.
  • the length of the control pin 30 can be selected according to the desired pre-compression path become.
  • the control piston 8 and the ejector 7 can be moved backwards on the one hand indirectly controlling the ejector rod 17 Curve be designed so that they have such a backward movement permits, and on the other hand funds must be provided that are responsible for this backward movement.
  • the backward movement generated by a spring 32 is the backward movement generated by a spring 32.
  • the ejector rod 17 articulated to one over the To couple curve controlled ejector levers so they not only pushed forward by it, but also backwards is pulled.
  • the hot forming machine comprises a machine body 130 and a tool block 100 in which a die 105 and an associated extendable and retractable ejector 107, which is essentially the ejector 7 of the first embodiment corresponds, are arranged.
  • the ejector 107 is via an ejector pin 109 with an axially displaceable Ejector rod 117 connected.
  • One around an axis 152 rotatable ejector lever 150 has a pressure pin 151 for the ejector rod 117 and a freely rotatable roller 153, which abuts a curve 160.
  • the ejector lever 150 is biased by means of a tension spring 170, that the roller 153 is constantly on the curve 160.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Press Drives And Press Lines (AREA)

Claims (12)

  1. Procédé de compression à chaud de pièces, dans lequel une pièce (4) chauffée à la température de forgeage est décalaminée à l'extérieur d'une matrice (5; 105) par pré-compression au moyen d'un piston de presse (1) et est ensuite comprimée dans une ou plusieurs matrices (5; 105) en la forme souhaitée, caractérisé en ce que la pré-compression et le forgeage dans la première matrice, respectivement la matrice individuelle (5; 105) se font par le même piston de presse (1) dans le même cycle de déplacement du piston de presse (1).
  2. Procédé selon la revendication 1, caractérisé en ce que la pièce (4) est maintenue, lors de la pré-compression, par un éjecteur déployé (7; 107) de la première matrice, respectivement la matrice individuelle (5; 105) à l'extérieur de celle-ci et, après la pré-compression, est transportée par la pression du piston de presse (1) se déplaçant en avant dans la matrice (5; 105), où elle est forgée par l'autre déplacement en avant du piston de presse (1).
  3. Procédé selon la revendication 2, caractérisé en ce que la pièce (4) est déplacée vers la matrice (5; 105) déjà au cours de la pré-compression, mais sa vitesse de déplacement est faible en comparaison de sa vitesse de déplacement après la pré-compression.
  4. Machine de forgeage à chaud pour réaliser le procédé selon la revendication 1, 2 ou 3, comprenant au moins une matrice (5; 105), un éjecteur (7; 107) y appartenant qui peut se déployer et rentrer et un piston de presse (1) qui peut se déplacer en avant et en arrière, caractérisée en ce qu'il est prévu des moyens avec lesquels le refoulement de l'éjecteur déployé (7; 107) par le piston de presse (1) se déplaçant en avant sur une pièce (4) disposée entre l'éjecteur (7; 107) et le piston de presse (1) peut être retardé de manière que la pièce (4) puisse ainsi être pré-comprimée à l'extérieur de la matrice (5; 105).
  5. Machine de forgeage à chaud selon la revendication 4, caractérisée en ce que les moyens de retard précités comprennent un piston de commande (8) agencé dans une chambre de pression (28) et directement ou indirectement relié à l'éjecteur (7) ainsi que des moyens pour introduire un liquide ou un gaz dans la chambre de pression (28) et l'en évacuer, les moyens d'évacuation de liquide ou de gaz étant conformés de sorte que l'évacuation du liquide ou du gaz de la chambre de pression (28) se fasse en partie avec un certain retard et retarde le refoulement du piston de commande (8) et dudit éjecteur (7).
  6. Machine de forgeage selon la revendication 5, caractérisée en ce que les moyens d'évacuation de liquide ou de gaz comprennent une conduite (23) d'évacuation de liquide ou de gaz dans laquelle est aménagé un étranglement (25).
  7. Machine de forgeage selon la revendication 5, caractérisée en ce que les moyens d'évacuation de liquide ou de gaz comprennent une conduite (23) d'évacuation de liquide ou de gaz, dans laquelle est aménagée une vanne de limitation de pression (26), qui ne s'ouvre qu'à une certaine pression du liquide ou du gaz.
  8. Machine de forgeage à chaud selon la revendication 5, caractérisée en ce que les moyens d'évacuation de liquide ou de gaz comprennent une conduite (29) d'évacuation de liquide ou de gaz, qui est ouverte et fermée par une tige de commande (30).
  9. Machine de forgeage à chaud selon la revendication 8, caractérisée en ce que la tige de commande (30) est reliée à une barre d'éjection (17) qui peut se déplacer en avant et en arrière pour déployer l'éjecteur (7), des moyens (32) étant prévus pour déplacer en arrière la barre d'éjection (17) avant la rentrée de l'éjecteur (7).
  10. Machine de forgeage à chaud selon la revendication 4, caractérisée en ce qu'elle comprend une came rotative (160) pour commander le déploiement et la rentrée de l'éjecteur (107), qui est conformée et dont la rotation est coordonnée avec le déplacement en avant et en arrière du piston de presse de telle sorte que le refoulement de l'éjecteur déployé (107) se fasse avec un certain retard.
  11. Machine de forgeage à chaud selon la revendication 10, caractérisée en ce que la position de la came rotative (160) peut être réglée par rapport à la position du piston de presse.
  12. Machine de forgeage à chaud selon la revendication 10 ou 11, caractérisée en ce que la came (160) permet de déplacer en va-et-vient un levier d'éjection (150), avec lequel l'éjecteur (107) peut être déployé et à nouveau rentré via une barre d'éjection (117) et éventuellement une tige d'éjection (109).
EP99913052A 1998-04-24 1999-04-19 Procede et dispositif de compression a chaud de pieces Expired - Lifetime EP1073534B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH93498 1998-04-24
CH93498 1998-04-24
PCT/CH1999/000155 WO1999055475A1 (fr) 1998-04-24 1999-04-19 Procede de compression a chaud de pieces

Publications (2)

Publication Number Publication Date
EP1073534A1 EP1073534A1 (fr) 2001-02-07
EP1073534B1 true EP1073534B1 (fr) 2002-10-23

Family

ID=4198579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99913052A Expired - Lifetime EP1073534B1 (fr) 1998-04-24 1999-04-19 Procede et dispositif de compression a chaud de pieces

Country Status (13)

Country Link
US (1) US6286350B1 (fr)
EP (1) EP1073534B1 (fr)
JP (1) JP3524496B2 (fr)
KR (1) KR100400706B1 (fr)
CN (1) CN1089653C (fr)
AU (1) AU3135399A (fr)
CZ (1) CZ296945B6 (fr)
DE (1) DE59903173D1 (fr)
EA (1) EA002505B1 (fr)
ES (1) ES2182502T3 (fr)
TW (1) TW453913B (fr)
UA (1) UA54590C2 (fr)
WO (1) WO1999055475A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100386166C (zh) * 2006-07-10 2008-05-07 北京科技大学 非晶合金精密零件一锻多件超塑性成形装置
CN101885033B (zh) * 2009-05-11 2012-08-29 福光企业股份有限公司 锻造部品成型机的顶托通出装置
JP5556649B2 (ja) * 2010-12-22 2014-07-23 三菱自動車工業株式会社 熱間鍛造プレス成形方法及びその装置
RU2552819C1 (ru) * 2011-05-23 2015-06-10 Ниппон Стил Энд Сумитомо Метал Корпорейшн Способ горячего прессования и форма для горячего прессового формования
GB201116668D0 (en) * 2011-09-27 2011-11-09 Imp Innovations Ltd A method of forming parts from sheet steel
NL2011052C2 (nl) 2013-06-27 2015-01-05 Bosch Sprang Beheer B V Thermovorminrichting.
CN103769860A (zh) * 2013-11-27 2014-05-07 山东建筑大学 一种高速铁路桥梁支座的模锻成形方法
KR102264554B1 (ko) * 2019-11-29 2021-06-14 대산전자(주) 버스 바의 제조방법 및 이를 통해 제조된 버스 바, 및 릴
CN111673586A (zh) * 2020-06-17 2020-09-18 龙岩市武平县谨行科技有限公司 一种新型不锈钢制品生产用表面毛刺清理装置
CN113245492B (zh) * 2021-05-19 2023-07-04 中国第二重型机械集团德阳万航模锻有限责任公司 大型整体框锻造模具的制备方法及挤压扩孔方法
CN116372071B (zh) * 2023-06-06 2023-08-08 江苏金源高端装备股份有限公司 一种轨道交通变速箱行星齿轮箱支撑组件的铸造设备
CN117696817B (zh) * 2024-02-05 2024-05-10 山西天宝集团有限公司 新能源风力发电法兰锻造用智能自动旋转工作台及其方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120848B (de) * 1959-04-30 1961-12-28 Fritz Bernhard Hatebur Presse zur Verformung von Stangenabschnitten durch Stauchen
US3120769A (en) * 1960-08-29 1964-02-11 Hatebur Fritz Bernhard Pressing device for cold forming or hot forming workpieces
US3584498A (en) * 1967-11-09 1971-06-15 Hans Beche Fluid-operated drop-forge press
US3748887A (en) * 1971-10-01 1973-07-31 Ladish Co Method and apparatus for locating stock in forming dies
JPS5118259A (en) 1974-08-06 1976-02-13 Tomio Ishida Netsukanfuoomaaniokeru naigairindojiseizosochi
JPS57177845A (en) * 1981-02-07 1982-11-01 Aida Eng Ltd Press-forming method for bevel gear and its die
JPS6030545A (ja) * 1983-07-28 1985-02-16 Sumitomo Heavy Ind Ltd 閉塞鍛造装置

Also Published As

Publication number Publication date
KR20010042922A (ko) 2001-05-25
JP2002512888A (ja) 2002-05-08
US6286350B1 (en) 2001-09-11
CZ296945B6 (cs) 2006-08-16
UA54590C2 (uk) 2003-03-17
EP1073534A1 (fr) 2001-02-07
TW453913B (en) 2001-09-11
AU3135399A (en) 1999-11-16
CN1089653C (zh) 2002-08-28
JP3524496B2 (ja) 2004-05-10
DE59903173D1 (de) 2002-11-28
KR100400706B1 (ko) 2003-10-08
WO1999055475A1 (fr) 1999-11-04
EA200001100A1 (ru) 2001-04-23
ES2182502T3 (es) 2003-03-01
CZ20003924A3 (en) 2001-05-16
EA002505B1 (ru) 2002-06-27
CN1298329A (zh) 2001-06-06

Similar Documents

Publication Publication Date Title
EP1073534B1 (fr) Procede et dispositif de compression a chaud de pieces
DE102006003268B4 (de) Verfahren sowie Tiefziehvorrichtung zum Tiefziehen von Metallblechen
DE19929163C1 (de) Vorrichtung zum Feinschneiden von Werkstücken aus einem Blech
EP3242760B1 (fr) Dispositif et procédé pour poser un élément de liaison sur une pièce
DE2600512A1 (de) Vorrichtung zum abstreifen eines topffoermigen werkstueckes vom ende eines hin- und hergehenden stempels
DE1577951A1 (de) Zufuehrvorrichtung fuer Platinen bei einer Presse
EP2335841A1 (fr) Procédé de fabrication de pièces pliées et outil correspondant
DE925566C (de) Kaltschlag-Kopfstauchpresse mit Werkzeugeinrichtung zum Herstellen eines glatten oder fassonierten Sacklochs in Bolzen-oder Schraubenkoepfen
DE8021267U1 (de) Lastausgleichsvorrichtung fuer pressenwerkzeuge
EP3283243B1 (fr) Dispositif à cylindres annulaires comportant des paliers à roulement axialement fixes
DE2723109A1 (de) Abstreifverfahren und abstreifer
DE19629853A1 (de) Antriebsanordnung für eine Metallstrangpresse
DE10346661B4 (de) Verfahren zur Warmumformung von Blechplatinen sowie Vorrichtung zur Durchführung des Verfahrens
EP1345715B1 (fr) Presse a forger dotee d'un dispositif de reglage situe cote matrice
EP1984132A1 (fr) Pince d'usinage hydraulique
DE1677088B1 (de) Vorrichtung zum gratfreien Kalt- oder Warmverpressen,insbesondere auch durch Vorwaertsfliesspressen,von Stangenabschnitten
WO2014001198A1 (fr) Machine de forage profond, adaptateur et procédé de forage profond
WO2023240371A1 (fr) Procédé et dispositif de formage pour la fabrication de pièces moulées annulaires
EP4355511A1 (fr) Procédé et dispositif de formage pour la fabrication de pièces moulées annulaires
DE468050C (de) Herstellung von Bolzenkoepfen, Kugeln u. dgl.
DE596999C (de) Selbsttaetige Mehrfachdruckpresse, insbesondere Doppeldruckpresse
DE2856842A1 (de) Umformpresse fuer die herstellung von abzugratenden und nicht abzugratenden pressteilen
DE10208720B4 (de) Stempelseitige Auswerfvorrichtung für Werkstücke bei Ein- oder Mehrstufenpressen
DE1627678C (de) Vorrichtung zum überwiegenden Kalt pressen außen hinterschnittener, vorge preßter Zwischenpreßlinge
DE2825988C2 (de) Verfahren und Kaltformpresse zum Kaltformen zylindrischer Drahtabschnitte zu kugelförmigen, zylindrischen oder ähnlichen Werkstücken

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20001113

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES FR GB IT LI NL

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RTI1 Title (correction)

Free format text: METHOD AND APPARATUS FOR HOT PRESSING WORKPIECES

17Q First examination report despatched

Effective date: 20020423

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES FR GB IT LI NL

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20021023

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: A. BRAUN, BRAUN, HERITIER, ESCHMANN AG PATENTANWAE

REF Corresponds to:

Ref document number: 59903173

Country of ref document: DE

Date of ref document: 20021128

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2182502

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030724

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: HATEBUR UMFORMMASCHINEN AG

Free format text: HATEBUR UMFORMMASCHINEN AG#GENERAL GUISAN-STRASSE 21#CH-4153 REINACH (CH) -TRANSFER TO- HATEBUR UMFORMMASCHINEN AG#GENERAL GUISAN-STRASSE 21#CH-4153 REINACH (CH)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20090408

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20090424

Year of fee payment: 11

Ref country code: IT

Payment date: 20090415

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20090508

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20090423

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090409

Year of fee payment: 11

Ref country code: DE

Payment date: 20090629

Year of fee payment: 11

BERE Be: lapsed

Owner name: *HATEBUR UMFORMMASCHINEN A.G.

Effective date: 20100430

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20101101

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100419

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100430

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101103

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100430

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100419

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100419

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110718

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100420

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100430

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090421

Year of fee payment: 11