EP1419030B1 - Verfahren und vorrichtung zum spitzenlosen rundschleifen - Google Patents
Verfahren und vorrichtung zum spitzenlosen rundschleifen Download PDFInfo
- Publication number
- EP1419030B1 EP1419030B1 EP02767332A EP02767332A EP1419030B1 EP 1419030 B1 EP1419030 B1 EP 1419030B1 EP 02767332 A EP02767332 A EP 02767332A EP 02767332 A EP02767332 A EP 02767332A EP 1419030 B1 EP1419030 B1 EP 1419030B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- grinding
- support
- support guide
- grinding process
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
- B24B5/307—Means for supporting work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
- B24B5/22—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding cylindrical surfaces, e.g. on bolts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
Definitions
- the invention relates to a method for centerless cylindrical grinding, according to the preamble of claim 1 and a device according to the preamble of Claim 5.
- a procedure of this kind which is often referred to as "centerless procedure” in company practice. is designated, is known for example from DE 32 02 341 A1.
- the regulating wheel also To cause the feed of the workpiece, it has a slight from the horizontal tilted location.
- the workpiece is in a not exactly defined Way between the regulating wheel and the support ruler; it will be in this position pressed in through the grinding wheel. It is advantageous, if that too Support ruler is slightly tilted out of the horizontal.
- the relevant settings When preparing the machine for the grinding process are the center distance between the grinding wheel and the regulating wheel as well as the height adjustment of the support ruler. The best for any workpiece diameter appropriate center distance of grinding wheel and regulating wheel, and this must again the most suitable height adjustment of the support ruler found out become. The tuning of these settings requires a lot of experience.
- each center distance between the grinding wheel and the Regulating disc assign a certain height adjustment of the support ruler.
- the regulating wheel is in the usual way in a headstock slide stored, which can be made in the direction of the grinding wheel.
- a mechanical one Forced coupling of the headstock carriage with the support ruler causes that when adjusting the grinding wheel and regulating wheel to a certain Center distance corresponding to a specific diameter of the workpiece at the same time a very definite value for the height adjustment of the Support ruler comes about.
- the said adjustment can be made according to the proposal DE 32 02 341 A1 are even made during the grinding process, when the pressure force of the grinding wheel has to be corrected. In the result is at each further approach of the regulating wheel to the grinding wheel at the same time raised the support ruler by a certain amount.
- the invention is therefore based on the object, a method for centerless To provide cylindrical grinding of the type mentioned, in which even with stronger Material removal during the entire grinding process one for an optimal Grinding result required position of the workpiece between the grinding wheel, the regulating wheel and the support ruler is guaranteed.
- Influence size used to determine the position of the support ruler during the grinding process adapt the changing contour of the workpiece.
- the correct processing position of the workpiece during the grinding process then leads to the largest possible Accuracy of the grinding result.
- An advantageous embodiment of the method according to the invention can therein exist that during the grinding process, the contour of the workpiece metrologically detected and adjusted the support ruler in accordance with the measurement result becomes.
- the diameter of the Workpiece be measured continuously or at intervals. It is also possible, during the grinding process continuously deviations of the workpiece contour to measure from the circular shape and when exceeding a certain Value of the deviation, the height adjustment and / or the inclination of the support ruler to correct this deviation.
- Possibility can with the ongoing measurement of the workpiece diameter be combined. Be used to adjust the support ruler just mentioned Factors used, this leads to a high accuracy and dimensional accuracy the finished workpieces. However, this working method is very expensive.
- the invention also relates to a device for centerless cylindrical grinding, according to claim 5.
- the device can advantageously be designed in such a way be that two actuators are provided which engage the support ruler, connected to the control device and by these independently are actuated, such that during the grinding process in addition also the inclination of the support bar relative to the horizontal is specifically adjustable.
- each adjusting spindle is controllable for itself.
- the Device according to the invention can be configured particularly advantageously by that it has a support with a tip, in the longitudinal direction of the support ruler arranged in front of this and on the center of rotation of the to be ground Workpiece is aligned.
- a device configured during the grinding process ensures a precise axial fixation of the workpiece, so that despite different outside diameter and also in the presence radial face or ring surfaces that are to be ground, an accurate result comes about.
- the support ruler In many cases, it will be sufficient for the support ruler to be a single continuous one Body is.
- Carrier body provided on which attack the actuators and on the two or more support bodies are arranged articulated transversely to the longitudinal direction the support body extending pivot axes in the manner of rockers with are connected to the carrier body and have different support heights.
- the Support ruler is so multi-part.
- each support body on both sides of its pivot axis via compression springs is supported on the support body, can easily a self-adjusting Zero position of the carrier body can be achieved.
- This embodiment can be further optimized by that between a support body and the support body located pivot axis the side of the support body and / or the support body in a vertically is mounted to the carrier body extending biased bearing.
- the multipart Support ruler becomes so adaptable that even workpieces with graded, different diameters can be ground. Thereby It becomes possible, entire parts families without retooling the support ruler on to grind the same grinder.
- control device of the invention is according to a further proposal characterized particularly advantageous that the support ruler a measuring device is assigned by which during the grinding process the diameter and / or deviations of the workpiece contour from the circular shape be measured, and that the measuring device with an evaluation is connected, in turn, for forwarding control signals of the control device connected is.
- the device according to the invention can also consist in that the Control device is connected to a program unit, the control unit in accordance with a time-dependent operating program for grinding a supplies required control signals for each type of workpiece and for each individual Repeated workpiece of this type.
- Fig. 1 is the process of centreless cylindrical grinding, centerless loops called, shown schematically.
- a grinding wheel 1 and a regulating wheel 2 arranged substantially parallel to the axis side by side.
- the Workpiece 3 is located on a support ruler 4, which with a wear-resistant Covering 5 is provided.
- the support ruler 4 is opposite to the machine stand 10 in the height adjustable, as indicated by the double arrow 6.
- 7, 8 and 9 are the central axes and thus also rotational axes of the workpiece 3, the Grinding wheel 1 and the regulating wheel 2 indicated.
- the regulating wheel 2 rotationally driven, that is, it rotates about its central axis 9.
- the grinding wheel 1 also offset in rotation about its central axis 8.
- the directions of rotation of Grinding wheel 1 and the regulating wheel 2 are by the curved directional arrows 11 and 12 illustrates.
- the grinding wheel 1 in a main spindle and the regulating wheel 2 is received in a regulating wheel spindle headstock.
- one or both headstocks can be displaced in the x direction on a common Machine stand 10 to be mounted.
- the x-direction is - as you know - The transverse to the longitudinal axis of the workpiece direction. Execution such headstocks and the drive of the discs are customary and therefore not shown further.
- the position of the workpiece 3 on the support ruler 4 is not as clearly defined as that they could suggest schematic representation of FIG. 1.
- the regulating wheel 2 with slightly from the horizontal tilted axis may be arranged. This also raises the workpiece slightly sloping down, which again by an inclination of the support ruler can be compensated.
- the workpiece must have a very specific location between the grinding wheel 1, the regulating wheel 2 and the support bar 4 occupy.
- a situation set at the beginning of the grinding process is so exact quickly changed again when the diameter and contour of the workpiece as Change sequence of the grinding process. This is especially the case with today's conventional CBN grinding wheels the case with which a strong removal is achieved in a short time.
- the remedy is that during the grinding process, the support ruler on raised and also its inclination is corrected until the optimal conditions are restored and the workpiece is ground round.
- FIG. 2 therefore explains with reference to a sectional view of FIG. 1, as the Adjusting the support ruler during the grinding process is going on.
- the support ruler 4 with the workpiece 3 rests on two actuators 15 and 16, the in turn are supported on the machine stand 10.
- the actuators are in Longitudinal direction of the support bar 4 spaced from each other.
- the actuators by adjusting spindles with CNC-controlled Axes formed, each control spindle is controllable for itself.
- a Parallel displacement of the support ruler upwards can be generated by the fact that the two adjusting spindles are controlled synchronously. If in addition a tilt of the support ruler 4 by the angle ⁇ relative to the horizontal required is, the actuator 16 must be adjusted more than the actuator 15. Die Adjustment directions of the actuators are shown in Fig. 2 by the double arrows 13 and 14 marked.
- Fig. 3 includes a representation corresponding to the section A-A of Fig. 1.
- the workpiece is here a valve body 17, in the known manner consists of a shaft 18 with the valve plate 19.
- the valve body 17 rests although here on a support ruler 4.
- On the machine frame 10 is here but In addition, a support 21 secured by screws 22, and on the support 21st a tip 20 is formed.
- the valve body 17 is supported with its front, located on the valve plate 19 end face. It can thus not occur here that the valve body 17 under the influence of the axial Grinding forces resulting from the grinding of the bevel on the valve seat, in axial direction emigrates from the grinding zone.
- the central axis of the tip 20 is located at substantially the same elevation like the center axis of the grinding wheel.
- the axis of rotation of the valve body 17 corresponds approximately to the central axis 23 of the tip 20, as long as the support body horizontally.
- Fig. 5 illustrates a support ruler 24 in a multi-part design. It exists first from a carrier body 25, which in the manner of the support ruler shown in Fig. 2 supported by two actuators 15 and 16 on the machine frame 10 is. By different adjustment of the actuators 15 and 16 can also be achieve an inclination of the carrier body 25 here. Different, however, is that on the carrier body 25 two support body 26, 27 articulated are. These are transverse to the longitudinal axis of the support body extending pivot axes 28, 29 provided.
- the support body 26, 27 are characterized in the manner of Rockers connected to the carrier body 25; their pivoting mobility is illustrated by the round arrows 35 and 36.
- the support bodies can be different Pad heights have.
- the support body 26, 27 to a certain extent Adjust the dimension of workpieces where deviations of the workpiece diameter of the nominal size.
- the Oscillating motion compensated by the process forces acting on the support body, which superimpose the spring forces.
- Another advantage of the multi-part support ruler according to FIG. 5 is that that on this ruler by the pendulum movement of the support body 26, 27 Workpieces with different diameters can be ground. Thereby It is possible, entire parts families without retooling the support ruler on the same Machine to grind. Even stronger diameter differences can be be compensated by that between a support body 26, 27 and the support body 25 located pivot axis 28, 29 by adjusting by the two actuators 15,16 is brought into different height position.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
- Fig. 1
- veranschaulicht grundsätzlich den Vorgang des spitzenlosen Rundschleifens, wobei der Maschinenständer, das Stützlineal sowie die Schleif- und Regelscheibe zusammen mit dem Werkstück nur schematisch dargestellt sind.
- Fig. 2
- enthält eine schematische Darstellung zum Verstellen des Stützlineals mittels zweier Stellantriebe entsprechend dem Schnitt A-A in Fig. 1.
- Fig. 3
- hat das Schleifen eines rotationssymmetrischen Werkstücks mit unterschiedlichen Durchmesserbereichen zum Gegenstand, ebenfalls entsprechend dem Schnitt A-A in Fig. 1.
- Fig. 4
- ist eine Ansicht entsprechend dem Pfeil B in der Fig. 3.
- Fig. 5
- erläutert das Prinzip eines mehrteiligen Stützlineals entsprechend dem Schnitt A-A in der Fig. 1.
Claims (11)
- Verfahren zum spitzenlosen Rundschleifen, bei dem sich das rotationssymmetrische Werkstück (3) beim Schleifvorgang zwischen der Schleifscheibe (1), der Regelscheibe (2) und dem Stützlineal (4) befindet und bei dem der Abstand zwischen der Schleifscheibe (1) und der Regelscheibe (2) sowie die Höheneinstellung und/oder die Schräglage des Stützlineals (4) während des Schleifvorganges nach Maßgabe des fortschreitenden Schleifvorganges selbsttätig gezielt veränderbar sind, dadurch gekennzeichnet, dass die Höheneinstellung und/oder die Schräglage des Stützlineals (4) durch ein festgelegtes Betriebsprogramm gesteuert wird, das die für einen bestimmten Werkstücktyp erforderlichen Änderungen berücksichtigt, in Abhängigkeit von der Schleifzeit abläuft und für jedes einzelne Werkstück (3) wiederholt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die unterschiedliche Schrägstellung des Stützlineals (4) in einer Neigung in seiner Längsrichtung gegenüber der Waagerechten erfolgt.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass während des Schleifvorganges das Werkstück (3) mit seiner einen Stirnfläche in seinem Rotationszentrum durch eine ortsfeste Spitze (20) in axialer Richtung abgestützt und um diese als Schwenkmittelpunkt nach oben verschwenkt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittelachse (9) der Regelscheibe (2) gegenüber der Waagerechten geneigt ist und dass der Neigungswinkel der Mittelachse (9) nach Maßgabe des fortschreitenden Schleifvorganges gleichfalls selbsttätig verstellt wird.
- Vorrichtung zum spitzenlosen Rundschleifen, mit einer angetriebenen Schleifscheibe (1) und einer angetriebenen Regelscheibe (2), von denen mindestens eine in einem Spindelstockschlitten gelagert ist , der quer zu der Axialrichtung des Werkstücks (3) verstellbar ist, und mit einem das Werkstück (3) abstützenden Stützlineal (4), das sich zwischen der Schleifscheibe (1) und der Regelscheibe (2) befindet und dessen Höheneinstellung durch mindestens einen Stellantrieb (15,16) verstellbar ist, wobei eine Steuereinrichtung vorgesehen ist, die während des Schleifvorganges selbsttätig den Stellantrieb (15,16) des Stützlineals (4) im Sinne einer für den Schleifvorgang optimalen Einstellung betätigt, insbesondere zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Steuereinrichtung mit einer Programmeinheit verbunden ist, die der Steuereinrichtung nach Maßgabe eines zeitabhängigen Betriebsprogramms die zum Schleifen eines bestimmten Werkstück-Typs erforderlichen Steuersignale liefert und für jedes einzelne Werkstück (3) dieses Typs wiederholt.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass zwei Stellantriebe (15,16) vorgesehen sind, die an dem Stützlineal (4) angreifen, mit der Steuereinrichtung verbunden und durch diese unabhängig voneinander betätigbar sind, derart, dass während des Schleifvorganges zusätzlich auch die Neigung des Stützlineals (4) gegenüber der Waagerechten gezielt einstellbar ist.
- Vorrichtung nach Anspruch 6, gekennzeichnet durch zwei in lotrechter Richtung wirkende Stellantriebe (15,16), die in Längsrichtung des Stützlineals (4) beabstandet an diesem angreifen.
- Vorrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass als Stellantriebe (15,16) Verstellspindeln mit CNC-gesteuerten Achsen vorgesehen sind und dass jede Verstellspindel für sich steuerbar ist.
- Vorrichtung nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass sie eine Auflage (21) mit einer Spitze (20) aufweist, die in Längsrichtung des Stützlineals (4) vor diesem angeordnet und auf das Rotationszentrum des zu schleifenden Werkstücks ausgerichtet ist.
- Vorrichtung nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass ein etwa über die gesamte Länge des Stützlineals (24) reichender Trägerkörper (25) vorgesehen ist, an dem die Stellantriebe (15,16) angreifen, und dass auf dem Trägerkörper (25) zwei oder mehr Auflagekörper (26,27) gelenkig angeordnet sind, die über quer zu der Längsrichtung des Trägerkörpers (25) verlaufende Schwenkachsen (28,29) nach Art von Wippen mit dem Trägerkörper (25) verbunden sind und unterschiedliche Auflagehöhen haben.
- Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass jeder Auflagekörper (26,27) beiderseits seiner Schwenkachse (28,29) über Druckfedern (30,31; 32,33) auf dem Trägerkörper (25)abgestützt ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10139894 | 2001-08-14 | ||
DE10139894A DE10139894B4 (de) | 2001-08-14 | 2001-08-14 | Verfahren und Vorrichtung zum spitzenlosen Rundschleifen |
PCT/EP2002/008779 WO2003015983A1 (de) | 2001-08-14 | 2002-08-06 | Verfahren und vorrichtung zum spitzenlosen rundschleifen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1419030A1 EP1419030A1 (de) | 2004-05-19 |
EP1419030B1 true EP1419030B1 (de) | 2005-03-02 |
Family
ID=7695412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02767332A Expired - Lifetime EP1419030B1 (de) | 2001-08-14 | 2002-08-06 | Verfahren und vorrichtung zum spitzenlosen rundschleifen |
Country Status (11)
Country | Link |
---|---|
US (1) | US7258594B2 (de) |
EP (1) | EP1419030B1 (de) |
JP (1) | JP3995653B2 (de) |
KR (1) | KR100955131B1 (de) |
CN (1) | CN100506479C (de) |
AT (1) | ATE289894T1 (de) |
CZ (1) | CZ296364B6 (de) |
DE (2) | DE10139894B4 (de) |
ES (1) | ES2236578T3 (de) |
RU (1) | RU2298467C2 (de) |
WO (1) | WO2003015983A1 (de) |
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DE102005035581A1 (de) * | 2005-07-29 | 2007-02-01 | Rosink Gmbh + Co. Kg Maschinenfabrik | Vorrichtung zum Schleifen von Spinnzylindern |
JP4718298B2 (ja) * | 2005-10-24 | 2011-07-06 | 光洋機械工業株式会社 | 棒状工作物のセンタレス研削方法およびセンタレス研削装置 |
US7677954B2 (en) * | 2007-05-21 | 2010-03-16 | Hall David R | O.D. centerless grinding machine |
JP5057947B2 (ja) * | 2007-12-03 | 2012-10-24 | ミクロン精密株式会社 | センタレス研削方法 |
US8277279B2 (en) * | 2007-12-14 | 2012-10-02 | Rolls-Royce Corporation | Method for processing a work-piece |
KR101620500B1 (ko) * | 2008-10-29 | 2016-05-12 | 보르그워너 인코퍼레이티드 | 샤프트를 기계가공하기 위한 방법 및 장치 |
CN101596691B (zh) * | 2009-04-23 | 2012-12-05 | 贵州航天精工制造有限公司 | 一种沉头零件的无心磨削方法及装置 |
DE102009023234A1 (de) * | 2009-05-29 | 2010-12-02 | Rheinisch-Westfälische Technische Hochschule Aachen | Auflageschiene einer Spitzenlos-Schleifmaschine und Verfahren zur Durchführung eines Schleifvorgangs |
DE102010036065B4 (de) * | 2010-09-01 | 2014-02-06 | Erwin Junker Grinding Technology A.S. | Verfahren zum Rundschleifen eines Werkstücks, das Werkstück enthaltendes System und Vorrichtung zum spitzenlosen Rundschleifen des Systems |
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CN115431114B (zh) * | 2022-10-08 | 2023-06-20 | 河南国疆新材料科技有限公司 | 一种超高直线度同心度的陶瓷管棒的制作装置及方法 |
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FR13761E (fr) | 1908-03-12 | 1911-06-30 | Physikalisch Tech Lab | Appareil de chauffage pour fers à friser et autres objets analogues |
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IT976470B (it) | 1973-02-09 | 1974-08-20 | Finike Italiana Marposs | Metodo e relativa apparecchiatura per il controllo delle condizioni di lavorazione durante le operazio ni di rettifica in rettificatrici senza centri |
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US20030074680A1 (en) * | 1993-03-19 | 2003-04-17 | Johns Hopkins University School Of Medicine | Growth differentiation factor-8 |
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-
2001
- 2001-08-14 DE DE10139894A patent/DE10139894B4/de not_active Expired - Lifetime
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2002
- 2002-08-06 JP JP2003520526A patent/JP3995653B2/ja not_active Expired - Lifetime
- 2002-08-06 US US10/487,511 patent/US7258594B2/en not_active Expired - Lifetime
- 2002-08-06 WO PCT/EP2002/008779 patent/WO2003015983A1/de active IP Right Grant
- 2002-08-06 EP EP02767332A patent/EP1419030B1/de not_active Expired - Lifetime
- 2002-08-06 CZ CZ20040226A patent/CZ296364B6/cs not_active IP Right Cessation
- 2002-08-06 ES ES02767332T patent/ES2236578T3/es not_active Expired - Lifetime
- 2002-08-06 KR KR1020047000875A patent/KR100955131B1/ko active IP Right Grant
- 2002-08-06 RU RU2004107511/02A patent/RU2298467C2/ru active
- 2002-08-06 AT AT02767332T patent/ATE289894T1/de not_active IP Right Cessation
- 2002-08-06 CN CNB028137175A patent/CN100506479C/zh not_active Expired - Lifetime
- 2002-08-06 DE DE50202390T patent/DE50202390D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE10139894B4 (de) | 2009-09-10 |
DE50202390D1 (de) | 2005-04-07 |
DE10139894A1 (de) | 2003-03-13 |
EP1419030A1 (de) | 2004-05-19 |
CZ2004226A3 (cs) | 2004-07-14 |
CN100506479C (zh) | 2009-07-01 |
JP3995653B2 (ja) | 2007-10-24 |
CZ296364B6 (cs) | 2006-02-15 |
ATE289894T1 (de) | 2005-03-15 |
KR100955131B1 (ko) | 2010-04-28 |
RU2004107511A (ru) | 2005-06-10 |
KR20040030822A (ko) | 2004-04-09 |
CN1525899A (zh) | 2004-09-01 |
US7258594B2 (en) | 2007-08-21 |
JP2004538164A (ja) | 2004-12-24 |
RU2298467C2 (ru) | 2007-05-10 |
US20040209558A1 (en) | 2004-10-21 |
WO2003015983A1 (de) | 2003-02-27 |
ES2236578T3 (es) | 2005-07-16 |
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