EP1138408A2 - Verfahren zur Herstellung von grossvolumigen Hohlkörpern - Google Patents
Verfahren zur Herstellung von grossvolumigen Hohlkörpern Download PDFInfo
- Publication number
- EP1138408A2 EP1138408A2 EP01105541A EP01105541A EP1138408A2 EP 1138408 A2 EP1138408 A2 EP 1138408A2 EP 01105541 A EP01105541 A EP 01105541A EP 01105541 A EP01105541 A EP 01105541A EP 1138408 A2 EP1138408 A2 EP 1138408A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrostatic
- die
- expansion
- welding
- opening
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 16
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000005242 forging Methods 0.000 abstract 2
- 239000002828 fuel tank Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 7
- 230000006978 adaptation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003811 curling process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/02—Making hollow objects characterised by the structure of the objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/049—Deforming bodies having a closed end
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/02—Making hollow objects characterised by the structure of the objects
- B21D51/10—Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49805—Shaping by direct application of fluent pressure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49904—Assembling a subassembly, then assembling with a second subassembly
Definitions
- the invention first relates to a method for Production of large-volume hollow bodies at least partly through hydrostatic forming of cold formable Metal within a mold cavity Die.
- Such a method is, for example, from known from DE 44 36 436 of the applicant.
- two become flat sheets of cold-formable metal using the Hydroforming process two matching halves a large-volume hollow body created in Area of their "equator line" all the way to a hollow body be welded.
- the object of the invention is therefore to a new process for the production of large-volume To create hollow bodies, which with less material as well as low costs, higher process reliability having.
- the method according to the invention has numerous advantages.
- the main advantage is that one against the background of the final shape of one to be created large-volume hollow body first a sheet metal blank can create after the forming of the Cutting sheet metal into a three-dimensional, pressure-tight one Body with at least one opening circumferentially and materially adapted to the final shape of the hollow body becomes.
- Provide body with a large cross section is in the areas in which the final shape of the hollow body has a smaller cross section, the body also has a small cross-section is.
- conical, cylindrical and sectionally conical or cylindrical Basic bodies are created, which are later hydrostatic be expanded.
- the invention further relates to a method for the production of large-volume hollow bodies according to Claim 2.
- this method according to the invention has the basic advantages cited to claim 1 on, in addition through the tubular Body more variation options with regard to Final shape of the hollow body exist.
- This method according to the invention avoids elaborate sealing through internal adaptation or External adaptation of two openings in that already an opening of the tubular body in front of the hydrostatic expansion is closed. This You can use a less technically elaborate die and is therefore cheaper.
- the body will die before the hydrostatic Widening pressed into a flat oval shape. This has the advantage that tubular bodies that actually are too large for the die's engraving cavity moving the die halves into the die fit in. Otherwise it would be disadvantageous Way necessary before inserting the body into the die the body in a separate device to bring the flat oval shape.
- Procedures will follow the expansion and before welding the closure piece inside the Hollow body installation parts arranged. This is with these Procedure due to the still existing opening possible in a simple manner, on the one hand none Precautions must be taken to include one of foreign bodies falling into the hollow body to avoid.
- Procedure already pre-assembled from the side Assemblies in the largely closed Body are retracted. This increases process reliability noticeably.
- a circumferential area of the intended opening Collar formed during hydrostatic expansion is used as a welded socket.
- Procedure is in the hollow body before its hydrostatic Widening a liquid displacing element introduced, which creates the procedural advantage that the filling and emptying times are significantly lower.
- a liquid displacing Element can be on the adapter, for example be attached.
- the invention also relates to a large volume Hollow body, in particular motor vehicle tank and Like. Made by using the aforementioned Method.
- a very special one on the space available in the motor vehicle body can have a coordinated shape, so that the available space is used optimally becomes.
- Such a hollow body 10 is made from a cold-formable one Sheet metal blank 11 (see FIG. 1) produced, which in a first process step by means of a Roll up or other process into a tubular Body 12 (see FIG. 2) with two openings A1 and A2 is reshaped.
- the connection of the opposite Sheet metal end faces are made using a Butt weld preferably with the help of a tungsten inert gas welding source, using other welding methods, such as. laser welding can be used (See weld S1 in Fig. 2).
- the sheet metal blank 11 is based on the desired Final shape of the hollow body 10 determined so that conical, cylindrical and / or sectionally conical or cylindrical bodies 12 arise after the curling process, it is important that at both ends of the Tubular body 12 cylindrical cross sections available are.
- the shape of the sheet metal blank 11 or itself resulting tube body 12 is tuned to the different sizes of the final shape of the hollow body 10 in certain areas.
- the goal is in everyone Area of the tubular body 12 with an expansion step and the maximum possible shaping of the material the final contour to reach the hollow body 10.
- the expansion of the tubular body 12 in one process step is important because it does not work hardening can arise and thus a complex intermediate annealing is avoided.
- tubular Body 12 by means of a weld S2 Cap 13 is welded.
- the cap 13 may vary their geometry also through a hydroforming process or be produced by deep drawing. Different to 3 and 4 is preferred in the tubular body 12 through the larger opening closed a cap because of the smaller diameter the other opening for adaptation and sealing requires lower side locking forces.
- the one shown in Fig. 4, one-sided by the Cap 13 sealed tube body 12 is then - how 5 - inserted into a die 14, which to a die upper part 15 and a lower die part 16 exists.
- the die 14 shows an engraving 17 of the Upper die part 15 and an engraving 18 of the lower die part 16 with which the final shape of the hollow body 10 is created shall be.
- FIG. 6 is the die with an inserted hollow body 10 after the so-called pressing of the tubular Body 12 shown in a flat oval state.
- the sealing surfaces 19 of FIG. 1 can be seen on the one hand Die upper part 15 and lower die part 16, the sealing lie on one another.
- the one displacer component 21 has. With the help of the displacer component 21 the amount of hydraulic fluid required for the hydroforming process significantly reduced, which reduces the filling and Emptying times are greatly reduced. After Filling the tubular body 12 with the pressure fluid ultimately finds the moving together of Upper part and lower part 15, 16 instead.
- Channels for the hydraulic fluid are available in the drawings are not shown.
- the end contour is from the tubular Body 12 emerging hollow body 10th still recognizable within the die 14.
- the outer peripheral surface has a pressure of up to approx. 1,000 bar of the tubular body 12 completely the engravings 17 and 18 of the upper die part 15 and lower die part 16 created.
- the removal the adapter 20, the removal of the hollow body 10 from die 14 as well as cleaning and drying of the hollow body 10 can in a further step in the present case through the opening A2
- Internals for a motor vehicle tank, namely for example a pump 22 and breakwater 23, can be installed (see Fig. 9). It is also possible - as not shown - that at that time or at the time shown in Fig. 8 next to the Separation of a sealing end 24 also additionally required openings, e.g. for the arrangement of a tank filler neck, be created.
- the final hollow body is in FIG. 10 10 to recognize that the opening A2 in the meantime by a weld S3 with a further cap 25 has been locked.
- This in the exemplary embodiment hollow body 10 provided as a motor vehicle tank naturally have a completely different shape and size than previously described and illustrated Embodiment.
- the example described serves just the simple representation and description of the method according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
Claims (10)
- Verfahren zur Herstellung von großvolumigen Hohlkörpern zumindest teilweise durch hydrostatische Umformung von kaltumformbarem Metall innerhalb einer Formhöhlung eines Gesenks, gekennzeichnet durch folgende Verfahrensschritte:a. Zuschnitt eines Blechesb. Umformung des Blechzuschnitts sowie Verschweißung der gegenüberliegenden Stoßflächen zur Schaffung eines dreidimensionalen druckdichten Körpers mit mindestens einer Öffnungc. Hydrostatische Aufweitung des Körpers innerhalb eines Gesenksd. Anschweißen mindestens eines Verschlussstücks
- Verfahren zur Herstellung von großvolumigen Hohlkörpern zumindest teilweise durch hydrostatische Umformung von kaltumformbarem Metall innerhalb einer Formhöhlung eines Gesenks, gekennzeichnet durch folgende Verfahrensschritte:a. Zuschnitt des Blechzuschnittsb. Umformung des Blechzuschnitts in einen dreidimensionaler, im weitesten Sinne rohrförmigen Körper mit zwei Öffnungenc. Hydrostatische Aufweitung des Körpers innerhalb eines Gesenksd. Anschweißen zweier Verschlussstücke
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass nach der Schaffung des rohrförmigen Körpers und vor der hydrostatischen Aufweitung durch Anschweißen eines Verschlussstücks bereits eine Öffnung druckdicht verschlossen wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass vor der hydrostatischen Aufweitung der Körper im Gesenk in eine flachovale Form gepresst wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass vorher eine Befüllung des Körpers mit der Druckflüssigkeit erfolgt.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass nach der Aufweitung des Körpers und vor dem Anschweißen des Verschlussstücks innerhalb des Hohlkörpers Einbauteile angeordnet werden.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass nach der Aufweitung des Körpers in letzteren mindestens eine Öffnung eingebracht wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass im Bereich der vorgesehenen Öffnungen während der hydrostatischen Aufweitung jeweils ein umlaufender Kragen ausgeformt wird, der als Anschweißstutzen dient.
- Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass in den Körper vor seiner hydrostatischen Aufweitung ein flüssigkeitverdrängendes Element eingeführt wird.
- Großvolumiger Hohlkörper, insbesondere Kraftfahrzeugtank od. dgl. hergestellt durch Anwendung eines der vorgenannten Verfahren.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10016025 | 2000-03-31 | ||
| DE10016025A DE10016025B4 (de) | 2000-03-31 | 2000-03-31 | Verfahren zur Herstellung von Hohlkörpern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1138408A2 true EP1138408A2 (de) | 2001-10-04 |
| EP1138408A3 EP1138408A3 (de) | 2002-06-26 |
Family
ID=7637111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01105541A Withdrawn EP1138408A3 (de) | 2000-03-31 | 2001-03-06 | Verfahren zur Herstellung von grossvolumigen Hohlkörpern |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6684475B2 (de) |
| EP (1) | EP1138408A3 (de) |
| JP (1) | JP2001353546A (de) |
| KR (1) | KR20010094972A (de) |
| DE (1) | DE10016025B4 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119634523A (zh) * | 2024-12-09 | 2025-03-18 | 无锡业恒金属制品有限公司 | 一种金属配件加工用冲压制造设备 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE375218T1 (de) * | 2001-10-17 | 2007-10-15 | Corus Staal Bv | Verfahren zum herstellen eines behälters für ein unter druck stehendes fluid, und solcher behälter |
| US8516947B1 (en) * | 2003-04-22 | 2013-08-27 | Food Equipment Technologies Company, Inc | Food equipment housing with arcuate panels |
| CN100431733C (zh) * | 2006-10-11 | 2008-11-12 | 梁雪华 | 一种液胀成型工艺 |
| US7832617B2 (en) * | 2007-03-30 | 2010-11-16 | Ashcroft, Inc. | Adapter assembly and method of manufacture |
| DE102009010490A1 (de) * | 2009-02-25 | 2010-09-02 | Amborn, Peter, Dr. Ing. | Verfahren zur Herstellung eines Hohlkörpers durch Beaufschlagung eines solchen in einer Kavität einliegenden Hohlkörperrohlings mit Innendruck unter erhöhter Temperatur |
| US10072797B2 (en) * | 2014-01-31 | 2018-09-11 | C.N.G.V. d.o.o. | Method to produce high-resistance composite vessels with inner metal liner and vessels made by said method |
| DE102016123265A1 (de) * | 2016-12-01 | 2018-06-07 | Linde + Wiemann SE & Co. KG | Verfahren und Halbzeug zur Herstellung eines wenigstens partiell gehärteten Profilbauteils |
| CN113319185B (zh) * | 2021-06-08 | 2023-04-11 | 哈尔滨工业大学 | 一种大直径薄壁筒形件流体压力成形装置及成形方法 |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE372360C (de) | 1923-03-27 | August Schwarzer | Selbsttaetiger Hebelverschluss fuer die innere Tuer der Heizoeffnung von Zimmeroefen | |
| BE474713A (de) * | ||||
| US2503190A (en) * | 1947-04-07 | 1950-04-04 | Mcnamar Boiler & Tank Company | Method of forming spherical containers |
| US3572073A (en) * | 1969-03-10 | 1971-03-23 | Walter B Dean | Method of shaping a thin-walled body |
| GB1374977A (en) * | 1970-12-02 | 1974-11-20 | Fairey Stainless Ltd | Double-walled containers and their manufacture |
| FR2228551A1 (en) * | 1973-05-08 | 1974-12-06 | Eta Sa | Method of forming hollow sheet metal sphere - metal cylinder deformed by internal water pressure within spherical mould |
| JPS5183062A (de) * | 1975-01-17 | 1976-07-21 | Yamaha Motor Co Ltd | |
| CH620166A5 (de) * | 1976-08-25 | 1980-11-14 | Udo Schuetz | |
| AT347207B (de) * | 1976-12-21 | 1978-12-11 | Voest Ag | Verfahren zum senkrecht-stumpfschweissen von blechen, insbesondere von vertikalstoessen von grossraumbehaeltern |
| JPS5396963A (en) * | 1977-02-04 | 1978-08-24 | Yamaha Motor Co Ltd | Manufacturing method of fuel tank for autoobicycle |
| US4744237A (en) * | 1987-05-06 | 1988-05-17 | Ti Automotive Division Of Ti Canada Inc. | Method of forming box-like frame members |
| DE3906957A1 (de) * | 1988-12-05 | 1990-09-06 | Kuhn Rainer | Verfahren zur herstellung von rohrartigen bauteilen |
| GB9114444D0 (en) * | 1991-07-04 | 1991-08-21 | Cmb Foodcan Plc | Apparatus and method for reshaping containers |
| DE4436436C2 (de) * | 1994-10-12 | 1996-08-22 | Hde Metallwerk Gmbh | Verfahren zum hydrostatischen Umformen von insbesondere ebenen Blechen aus kaltumformbarem Metall und Vorrichtung durch Durchführung des Verfahrens |
| EP0761365B1 (de) * | 1995-09-04 | 2000-10-18 | Elpatronic Ag | Verfahren und Vorrichtung zum Rollnahtschweissen von Behältern |
| DE19719531A1 (de) * | 1997-05-09 | 1998-11-12 | Huber & Bauer Gmbh | Verfahren zum Herstellen eines im ganzen quaderförmigen Blechgehäuses, insbesondere einer Backröhre |
| US6182487B1 (en) * | 1998-02-18 | 2001-02-06 | Nippon Sanso Corporation | Metal vessel and a fabrication method for the same |
| JPH11225890A (ja) * | 1998-02-18 | 1999-08-24 | Nippon Sanso Kk | 金属製容器とその製造方法 |
| US6216509B1 (en) * | 1998-08-25 | 2001-04-17 | R.J. Tower Corporation | Hydroformed tubular member and method of hydroforming tubular members |
| DE19851259A1 (de) * | 1998-11-06 | 2000-05-18 | Alcan Gmbh | Verfahren und Zwischenprodukt zum Herstellen eines Hohlkörpers sowie ein durch ein derartiges Verfahren hergestellter Hohlkörper |
| DE10014619B4 (de) * | 1999-03-26 | 2007-07-05 | Nissan Motor Co., Ltd., Yokohama | Verfahren und Vorrichtung zum Formen eines röhrenförmigen Werkstücks in ein geformtes Hohlprodukt unter Verwendung einer Röhren-Hydroformung |
| AU6221200A (en) | 1999-07-23 | 2001-02-13 | University Of Massachusetts | Antitumor antibodies, proteins, and uses thereof |
| DE10016206C1 (de) * | 2000-03-31 | 2001-10-04 | Schuler Hydroforming Gmbh & Co | Formwerkzeug für nach dem Innenhochdruck-Umformen herzustellende hohle Bauteile aus zwei Blechplatinen |
-
2000
- 2000-03-31 DE DE10016025A patent/DE10016025B4/de not_active Expired - Fee Related
-
2001
- 2001-03-06 EP EP01105541A patent/EP1138408A3/de not_active Withdrawn
- 2001-03-14 KR KR1020010013079A patent/KR20010094972A/ko not_active Withdrawn
- 2001-03-23 JP JP2001128419A patent/JP2001353546A/ja active Pending
- 2001-03-26 US US09/817,749 patent/US6684475B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119634523A (zh) * | 2024-12-09 | 2025-03-18 | 无锡业恒金属制品有限公司 | 一种金属配件加工用冲压制造设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001353546A (ja) | 2001-12-25 |
| EP1138408A3 (de) | 2002-06-26 |
| KR20010094972A (ko) | 2001-11-03 |
| DE10016025B4 (de) | 2005-06-16 |
| US6684475B2 (en) | 2004-02-03 |
| DE10016025A1 (de) | 2001-10-18 |
| US20020029456A1 (en) | 2002-03-14 |
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