EP1412105B1 - Method for separating sections during extrusion - Google Patents
Method for separating sections during extrusion Download PDFInfo
- Publication number
- EP1412105B1 EP1412105B1 EP02740259A EP02740259A EP1412105B1 EP 1412105 B1 EP1412105 B1 EP 1412105B1 EP 02740259 A EP02740259 A EP 02740259A EP 02740259 A EP02740259 A EP 02740259A EP 1412105 B1 EP1412105 B1 EP 1412105B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- extrusion
- extrusion molded
- combustion
- molded product
- product
- 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
Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 3
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 235000012438 extruded product Nutrition 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/12—Extruding bent tubes or rods
Definitions
- the invention relates to a method for separating partial lengths in Extrusion of rounded or curved metallic extruded products, wherein the Preßauer in a counter-spar of an extrusion press upstream Mold formed and then curved by the action of external forces or is bent.
- the invention is based on the object, a method of the type mentioned to create, with which desired without detriment to the extrusion product Separate part lengths.
- the Extruded product is cut to length by flame cutting.
- This can be advantageous a burner medium made of different gas compositions and Use mixing ratios. Suitable are the usual gases, such as oxygen, acetylene, propane, butane, natural gas, etc. and their mixtures.
- a preferred further proposal provides that the squeezed product in Production flow is cut to length by plasma cutting.
- join in realize the said burner inserts short cycle times when disconnecting what It allows a defined material condition and the economy of the Extrusion (extrusion rate) to adjust accordingly.
- the burner head - or the burner heads - as close as possible to the Extrusion product can be with regard to the separation time and the Quality of the cut to achieve optimized efficiency. It lies here in the context of the method according to the invention, the burner head depending on Component profile from the outset so adapt or interpret that a nationwide admission over the entire profile is guaranteed.
- Another proposal of the invention provides that the - in the starting position behind the rounding tool arranged - burner head during the separation process of a Robot according to the current radius of curvature of the extruded product is positioned.
- the already existing from an extruder on an extrusion line higher-level computer-controlled robot also allows that at high Extrusion speeds and large extrusion cross sections of the robot Burner head in the extrusion direction leads to the profile thus at a defined Place to separate.
- the combustion head is mounted on a linear axis - e.g. disposed on the rounding tool - guided and impinged with gas.
- the Jerky gas supply assists that the profile in no time is disconnected.
- the Passing a mark by a control loop an impulse on the Burner unit is triggered. Immediately upon reaching the mark becomes so, e.g. caused pneumatically, the profile applied to the separation medium.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Abtrennen von Teillängen beim Strangpressen von gerundeten bzw. gekrümmten metallischen Strangpreßprodukten, wobei das Preßprodukt in einer einem Gegenholm einer Strangpreßanlage vorgelagerten Matrize geformt und anschließend durch Einwirken äußerer Kräfte gekrümmt bzw. abgebogen wird.The invention relates to a method for separating partial lengths in Extrusion of rounded or curved metallic extruded products, wherein the Preßprodukt in a counter-spar of an extrusion press upstream Mold formed and then curved by the action of external forces or is bent.
Zur Herstellung von in verschiedensten industriellen Bereichen zu unterschiedlichsten Zwecken benötigten gerundeten Strangpreßprofilen, die vorrangig aus Aluminium und Magnesiumlegierungen bestehen, ist es für das Strangpressen von Hohlprodukten mit großen Wanddickenunterschieden durch die EP 0 706 843 B1 bekanntgeworden, in einem solch bestimmten Abstand vom Matrizenaustrittsende bzw. Gegenholm mit einem Druckmittel (Führungswerkzeug) eine Kraft auf den Strang auszuüben, daß sich eine Rückwirkung auf das in der Strangpreßmatrize geformte Profil ergibt. Bei dem Druckmittel kann es sich um eine Rolle, eine Querkraft erzeugende Gleitfläche, einen Rollenkäfig oder dergleichen Werkzeug handeln. Die Umformung des Strangpreßprofiles erfolgt hinter dem Strangpreßwerkzeug im plastischen Bereich des Werkstoffes.For the production of various industrial sectors in a variety of ways For purposes needed rounded Extrusions, the priority of Aluminum and magnesium alloys exist, it is for extruding Hollow products with large wall thickness differences by EP 0 706 843 B1 become known at such a certain distance from Matrizenaustrittsende or counter-member with a pressure medium (guide tool) a force on the Exercise strand that has a retroactive effect on the in the extrusion die shaped profile results. The pressure medium may be a roll, a Shear force generating sliding surface, a roller cage or the like tool act. The forming of the extruded profile takes place behind the extrusion die in the plastic region of the material.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art zu schaffen, mit dem sich ohne Nachteil für das Strangpreßprodukt gewünschte Teillängen abtrennen lassen.The invention is based on the object, a method of the type mentioned to create, with which desired without detriment to the extrusion product Separate part lengths.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Strangpreßprodukt im Pressenfluß unter Ausschaltung mechanischer Beanspruchung berührungsfrei abgelängt wird. Hiermit läßt sich erreichen, daß beim Trennvorgang keine äußeren Kräfte auf das Strangpreßprodukt einwirken können, die ansonsten ein außerordentlich nachteiliges Moment auf das Bauteil im plastischen Bereich ausüben würden. Mit dem erfindungsgemäß berührungsfreien Ablängen läßt sich vermeiden, daß der Rundungsradius des Strangpreßproduktes so stark beeinflußt wird, daß die Konturgenauigkeit schwankt und das Strangpreßprofil dann nur mit einem nachfolgenden, zusätzlichen Arbeitsgang, z.B. Kalibrieren durch Innenhochdruckumformen, in die gewünschte Endkontur gebracht werden könnte.This object is achieved in that the extruded product in Press flow under elimination of mechanical stress without contact is cut to length. Hereby can be achieved that during the separation process no external Forces can act on the extrusion, the otherwise a exert extremely adverse moment on the component in the plastic area would. With the contactless cutting according to the invention can be avoided that the rounding radius of the extruded product is so strongly influenced that the Contour accuracy fluctuates and the extruded profile then only with one subsequent, additional operation, e.g. Calibration by hydroforming, could be brought into the desired final contour.
Nach einer Ausgestaltung der Erfindung wird vorgeschlagen, daß das Strangpreßprodukt durch Brennschneiden abgelängt wird. Hierbei läßt sich vorteilhaft ein Brennermedium aus unterschiedlichen Gaszusammensetzungen und Mischungsverhältnissen verwenden. Als geeignet sind die üblichen Gase anzusehen, wie Sauerstoff, Acetylen, Propan, Butan, Erdgas, etc. und deren Gemischen.According to one embodiment of the invention, it is proposed that the Extruded product is cut to length by flame cutting. This can be advantageous a burner medium made of different gas compositions and Use mixing ratios. Suitable are the usual gases, such as oxygen, acetylene, propane, butane, natural gas, etc. and their mixtures.
Ein bevorzugter weiterer Vorschlag sieht vor, daß das ausgepreßte Produkt im Fertigungsfluß durch Plasmaschneiden abgelängt wird. In jedem Fall lassen sich bei den genannten Brennereinsätzen kurze Taktzeiten beim Trennen verwirklichen, was es ermöglicht, einen definierten Werkstoffzustand und die Wirtschaftlichkeit des Strangpressens (Strangpreßgeschwindigkeit) entsprechend einzustellen.A preferred further proposal provides that the squeezed product in Production flow is cut to length by plasma cutting. In any case, join in realize the said burner inserts short cycle times when disconnecting what It allows a defined material condition and the economy of the Extrusion (extrusion rate) to adjust accordingly.
Wenn vorteilhaft mit mehreren Brennerköpfen gleichzeitig abgelängt wird, was sowohl beim autogenen Brennschneiden als auch beim Plasmaschneiden möglich ist, läßt sich die für das Unterteilen des ausgepreßten Strangprofils benötigte Zeit verringern, beispielsweise durch von beiden Strangprofilseiten her aufeinanderzufahrende Brennerköpfe.If advantageously cut with several burner heads at the same time, what Both autogenous flame cutting and plasma cutting possible is, can be used for dividing the extruded extruded profile time reduce, for example, by aufeinanderzufahrende from two extruded profile sides Burner heads.
Wenn der Brennerkopf - bzw.die Brennerköpfe - so nah wie möglich an das Strangpreßprodukt positioniert wird, läßt sich hinsichtlich der Trennzeit und der Qualität des Trennschnittes ein optimierter Wirkungsgrad erreichen. Es liegt hierbei im Rahmen des erfindungsgemäßen Verfahrens, den Brennerkopf je nach Bauteilprofil von vornherein so anzupassen bzw. auszulegen, daß eine flächendeckende Beaufschlagung über das gesamte Profil gewährleistet wird.When the burner head - or the burner heads - as close as possible to the Extrusion product is positioned, can be with regard to the separation time and the Quality of the cut to achieve optimized efficiency. It lies here in the context of the method according to the invention, the burner head depending on Component profile from the outset so adapt or interpret that a nationwide admission over the entire profile is guaranteed.
Ein weiterer Vorschlag der Erfindung sieht vor, daß der - in der Ausgangslage hinter dem Rundungswerkzeug angeordnete - Brennerkopf beim Trennvorgang von einem Roboter entsprechend dem aktuellen Rundungsradius des Strangpreßproduktes positioniert wird. Der von dem an einer Strangpreßanlage ohnehin vorhandenen übergeordneten Rechner gesteuerte Roboter erlaubt es zudem, daß bei hohen Strangpreßgeschwindigkeiten und großen Strangpreßquerschnitten der Roboter den Brennerkopf in Strangpreßrichtung führt, um das Profil somit an einer definierten Stelle zu trennen.Another proposal of the invention provides that the - in the starting position behind the rounding tool arranged - burner head during the separation process of a Robot according to the current radius of curvature of the extruded product is positioned. The already existing from an extruder on an extrusion line higher-level computer-controlled robot also allows that at high Extrusion speeds and large extrusion cross sections of the robot Burner head in the extrusion direction leads to the profile thus at a defined Place to separate.
Nach einer Alternative wird der Brennkopf auf einer Linearachse - z.B. angeordnet auf dem Rundungswerkzeug - geführt und stoßartig mit Gas beaufschlagt. Die stoßartige Gasbeaufschlagung unterstützt es, daß das Profil in kürzester Zeit getrennt wird.As an alternative, the combustion head is mounted on a linear axis - e.g. disposed on the rounding tool - guided and impinged with gas. The Jerky gas supply assists that the profile in no time is disconnected.
Nach einer anderen Maßnahme der Erfindung kann vorgesehen werden, daß beim Überfahren einer Markierung durch einen Regelkreis ein Impuls auf das Brenneraggregat ausgelöst wird. Sofort beim Erreichen der Markierung wird damit, z.B. pneumatisch veranlaßt, das Profil mit dem Trennmedium beaufschlagt.According to another measure of the invention can be provided that the Passing a mark by a control loop an impulse on the Burner unit is triggered. Immediately upon reaching the mark becomes so, e.g. caused pneumatically, the profile applied to the separation medium.
Weitere Merkmale und Einzelheiten der Erfindung ergeben sich aus den Ansprüchen. Auf jeden Fall wird mit dem erfindungsgemäßen berührungsfreien Trennen sichergestellt, daß gewünschte Teillängen schnell und exakt ohne nachteilige Einwirkungen auf das im plastischen Bereich gerundete Profil erreicht werden können.Further features and details of the invention will become apparent from the Claims. In any case, with the inventive non-contact Separating ensured that desired part lengths quickly and accurately without adverse effects on the rounded profile in the plastic range achieved can be.
Claims (9)
- Method for separating sectional lengths upon extrusion molding of rounded or curved metallic extrusion molded products, whereby the extruded product is formed in a mold upstream of counter beam of an extrusion molding assembly and subsequently curved or bent by the effects of external forces, characterized in that the extrusion molded product in the press flow is trimmed contact-free with switching-off of mechanical loading.
- Method of claim 1, characterized in that the extrusion molded product is trimmed by flame cutting.
- Method of claim 2, characterized in that a combustion medium of different gas compositions and mixing ratios is used.
- Method of one of claims 1 through 3, characterized in that trimming is performed by plasma cutting.
- Method of one of claims 2 through 4, characterized in that the trimming is performed simultaneously with multiple combustion heads.
- Method of one of claims 2 through 5, characterized in that the combustion head is position as near as possible to the extrusion molded product.
- Method of one of claims 2 through 6, characterized in that the combustion head is positioned by a robotic device according to the actual curvature radius of the extrusion molded product.
- Method of one of claims 2 through 7, characterized in that the combustion head is guided on a linear axis and is impinged percussively with gas.
- Method of claim 8, characterized in that upon crossing a marking, an impulse is released to the combustion apparatus by means of a control circuit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10120953 | 2001-04-27 | ||
| DE10120953A DE10120953A1 (en) | 2001-04-27 | 2001-04-27 | Process for cutting off partial lengths during extrusion |
| PCT/DE2002/001409 WO2002087798A1 (en) | 2001-04-27 | 2002-04-17 | Method for separating sections during extrusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1412105A1 EP1412105A1 (en) | 2004-04-28 |
| EP1412105B1 true EP1412105B1 (en) | 2005-08-24 |
Family
ID=7683118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02740259A Expired - Lifetime EP1412105B1 (en) | 2001-04-27 | 2002-04-17 | Method for separating sections during extrusion |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1412105B1 (en) |
| AT (1) | ATE302657T1 (en) |
| DE (2) | DE10120953A1 (en) |
| WO (1) | WO2002087798A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10241028B3 (en) * | 2002-09-05 | 2004-07-29 | Erbslöh Ag | Process for the production of curved (rounded) structural components from an extruded profile |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3040235A1 (en) * | 1980-10-24 | 1982-05-06 | Friedrich Wilhelm Dipl.-Ing. 5600 Wuppertal Elhaus | Extruded section separator - where section esp. of aluminium (alloy) is heated locally, and separated by tensile force |
| NL9200138A (en) * | 1992-01-24 | 1993-08-16 | Reynolds Aluminium Bv | EXTRUSION METHOD AND EXTRUSION DEVICE. |
| DE4428827A1 (en) * | 1994-08-17 | 1996-03-14 | Kleiner Matthias Prof Dr Ing H | Process for the production of curved workpieces by a combination of extrusion and bending |
| US5484981A (en) * | 1994-08-24 | 1996-01-16 | Honda Giken Kogyo Kabushiki Kaisha | Method of cutting a hollow metallic material |
| DE19717066C1 (en) * | 1997-04-23 | 1998-02-26 | Daimler Benz Ag | Local injections of structural aluminium- or plastic foam into anticipated separation points |
-
2001
- 2001-04-27 DE DE10120953A patent/DE10120953A1/en not_active Withdrawn
-
2002
- 2002-04-17 AT AT02740259T patent/ATE302657T1/en not_active IP Right Cessation
- 2002-04-17 WO PCT/DE2002/001409 patent/WO2002087798A1/en not_active Application Discontinuation
- 2002-04-17 DE DE50204040T patent/DE50204040D1/en not_active Expired - Fee Related
- 2002-04-17 EP EP02740259A patent/EP1412105B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002087798A1 (en) | 2002-11-07 |
| DE50204040D1 (en) | 2005-09-29 |
| ATE302657T1 (en) | 2005-09-15 |
| DE10120953A1 (en) | 2002-10-31 |
| EP1412105A1 (en) | 2004-04-28 |
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