EP0963800B1 - Biegeanordnung zum Biegen kleiner und kleinerer oder werkzeugunabhängiger Biegeradien - Google Patents
Biegeanordnung zum Biegen kleiner und kleinerer oder werkzeugunabhängiger Biegeradien Download PDFInfo
- Publication number
- EP0963800B1 EP0963800B1 EP99107723A EP99107723A EP0963800B1 EP 0963800 B1 EP0963800 B1 EP 0963800B1 EP 99107723 A EP99107723 A EP 99107723A EP 99107723 A EP99107723 A EP 99107723A EP 0963800 B1 EP0963800 B1 EP 0963800B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- mandrel
- arrangement according
- feed
- bendable part
- 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
- 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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/10—Bending tubes using mandrels or the like by passing between rollers
Definitions
- the invention relates to a bending arrangement for bending small or tool-independent bending radii in a tubular bent part, the minimum has a ring and segment bending device in which the required to perform the bending function Bending tools are arranged, and the one feed device for feeding the bent part, the bending device in the feed direction of the bent part is arranged in front of the feed device.
- Such a bending arrangement is e.g. from the patent application DE-U-297 14 487 of the applicant is known.
- the bending device is here as Ring and segment bending device and a further bending device as a dome bending device educated.
- Such an arrangement has the advantage that in a simple way a spiral bending or a bending of three-dimensional Structures is made possible.
- the known bending arrangement enables a dome bending of the bent part, through the small and smallest bending radii can be produced, which are about one to four times the outer diameter of the bent part, a segment bending through which bending radii enter the bent part can be introduced, which are approximately three to six times the outer diameter of the tubular bent part, and a ring bending for large, tool-independent bend radii that are more than five times the outer diameter of the pipe to be bent.
- a disadvantage of the known Ring bending arrangement is that there is a risk that in the manufacture of small and small, tool-independent bending radii the tubular bent part is pressed in its cross section. So it is with the known Ring bending arrangement in a disadvantageous manner usually not possible bend tubular bent part without impairing its cross-sectional shape.
- the bending arrangement has a mandrel feed device, the mandrel insert in the through the bending tools specified bending range of the bending device can be inserted or is inserted, and that the bending arrangement is a device for compensation a pivoting movement of the bent part in the through the bending tools performed bending process.
- the measure according to the invention advantageously results in a Bending arrangement created that allows smaller and smaller bending radii in a bent part not by a classic dome bending process, but by a Bending process, in particular by means of a roll bending process, with the help one inserted into the tubular bent part, essentially up to to bring in the bending area advanced dome insert.
- a Bending process in particular by means of a roll bending process, with the help one inserted into the tubular bent part, essentially up to to bring in the bending area advanced dome insert.
- the wall material of the tubular Bent part and thus prevents undesirable indentation of the cross-sectional area of the bent part.
- FIG. 1-3 is an embodiment generally designated 1 Bending arrangement shown, which is in principle in a first bending device 2nd and divides a second bending device 3, preferably separated from this
- the first bending device 2 is a ring or segment bending device trained and has to carry out a ring or Segment bending process required bending tools, in particular two counter-holding rollers 4a, 4b and a bending roller 4c, by a bending cylinder 5 for the curvature of the tubular bent part 10 in the direction of the counter-holding rollers 4a, 4b is deliverable.
- the bending tools 4a, 4b, 4c, 5 are one preferably driven hydraulically or pneumatically operating drive unit 6, the control of the counter-holding rollers 4a, 4b and the bending roller 4c and motion bending cylinder 5 by a control device 7 Control signals S is controlled.
- the rollers 4a-4c can also serve to displace the bent part 10.
- Bending device 2 is intended for ring bending while segment bending the counter-holding rollers 4a, 4b by appropriate, known per se and segment bending tools not described in more detail to be replaced. It is also clearly apparent to the person skilled in the art. that instead of a three-reel operation the bending device 2 can also provide four-roll operation, in addition to the aforementioned rollers 4a, 4b, 4c, one in the figures Provides drive roller, not shown.
- the second bending device 3 is designed as a dome bending device, which has a bending table 32 on which a feed slide 35 in the feed direction of the bent part 10 is arranged to be movable.
- This feed carriage 35 is preferably shown only schematically in FIG Chain drive 36 moves, it being clear to the person skilled in the art that it is on special way of driving the feed carriage 35 does not arrive. Rather, it is also possible for the feed carriage 35 to be driven by an electric motor or to drive hydraulically or pneumatically.
- the feed carriage 35 has furthermore a clamping / rotating unit 37 through which the bent part 10 in the feed slide 35 can be tensioned and / or rotated about its longitudinal direction.
- the second bending device 3 has a mandrel unit 40 which in in a manner known per se from a mandrel insert 43 and a Mandrel linkage 42 exists.
- the second bending device has a dome bending head known per se 33 with dome bending tools 34. This dome bending head 33 becomes described bending process is not used.
- the second bending device 3 all other necessary to carry out a mandrel bending process Units, the provision of a "classic" bending head 33 a useful addition, since the bending arrangement 1 described then for chipless forming of a tubular bent part 10 by means of the classic one Mandrel bending process can be used.
- the structure described above the bending arrangement 1 and its two bending devices 2, 3 is on and for is known and therefore no longer needs to be explained.
- the mandrel linkage 42 of the Dome unit 40 is so long that the mandrel insert 43 in the bending area the bending rollers 4a-4c ends.
- This for simple bending constellations sufficient possibility has the disadvantage that the There is a risk that during the bending phase of the bent part 10 by the bending rollers 4a-4c the mandrel insert 43 located in this area breaks off.
- the bent part 10 is designed to be displaceable, so that at the beginning of the bending phase of the bent part 10 by the bending rollers 4a-4c of the mandrel insert 43 withdrawn from the bending area of the bending rollers 4a-4c and during the bending phase can be gradually pushed forward to the tubular Fill bent part 10 in the bending area and support it so that a Cross-sectional change of the tubular bent part 10 through the dome insert 43 is prevented.
- dome feed unit is 40 formed as a hydraulically or pneumatically actuated cylinder 47, the can be controlled by the control device 7. It is also quite possible to get one to use dome feeder 40 other than a cylinder.
- the mandrel insert 43 of the mandrel stand 42 as far as possible into the curved Being able to insert a bent part is preferred - as best shown in the figure 3 can be seen - provided that the mandrel insert 43 preferably as a link dome is formed, which in the case shown here has three dome members 43a-43c, which are hinged together.
- the first Bending device 2 is movable about a vertical axis, so that the on a Bending table 2a arranged bending tools 4a-4c, 5 as a result of the Mobility of the first bending device 2 given rotational mobility itself can align with the bent part 10 during the bending process.
- the bending table 2a of the first bending device 2 rotatable on a roller 20 having lower part 2b of the first Bending device 2 is arranged, the rollers 20 being transverse to the feed direction of the bending part 10 extending rails S1, S2 are displaceable.
- the mandrel feed unit 40 in this area transverse to Feed direction of the bent part 10 is movable. This is preferred achieved that the mandrel feed unit 40 is movably arranged in this direction is.
- the tubular bending part 10 also a compensating movement performs in its longitudinal direction, it is provided that during the bending process either the tension of the bent part 10 in the feed carriage 35 is released or the feed carriage 35 as a whole is decoupled from its drive unit 36 is so that the feed carriage 35 of the compensating movement of the bent part 10 can follow in its longitudinal direction, or it is provided that the Feed carriage 35 actively participates in the compensating movement of the bent part 10, by the feed slide 35 controlled by the control device 7 is updated accordingly.
- the operation of the bending assembly 1 is now as follows after the mandrel insert 43 of the dome device 40 is inserted into the tubular bent part 10 and the bent part 10 clamped in the clamping / rotating unit 36 of the feed carriage 35 the bent part 10 is pushed forward by the feed slide 35 until until the front end 10a of the bent part 10 between the counter-holding rollers 4a, 4b and the bending roller 4c.
- the bending table is 2a of the first bending device 2 oriented such that the rollers 4a, 4b and 4c are arranged essentially parallel to the tubular bent part 10. Then the bending roller 4c is fed by the bending cylinder 5.
- the mandrel insert 43 is outside the bending area defined by the rollers 4a-4c. It is therefore from the initial Curvature of the bent part 10 is not detected and therefore cannot break off. Moved by the action of the bending roller 4c on the bending part 10 the bending table 2a about its vertical axis, so that the first bending device 2 reaches the position shown in the figures. Then the mandrel insert 43 and the dome linkage 42 advanced by the mandrel feed device 40, until its front end, as can best be seen from FIG. 3, in reaches the bending area of the bending rollers 4a-4c. This ensures that the mandrel insert supports the wall area of the tubular bent part 10, so that it is also possible to bend small bending radii without the Wall of the tubular bent part 10 is deformed.
- the dome feed unit 40 can be detected by a position measuring system (not shown) is.
- Such a constellation also makes it easier to pull out the dome insert 43 from the bent part 10 after completion of the bending process.
- the mandrel bending device 2 and the mandrel linkage 42 supporting device 3 are supported against each other, because preferably it is provided that the bending device 2 is mounted on rollers 48 in order to enable a lateral movement of the bending device 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
- Figur 1
- eine Draufsicht auf ein Ausführungsbeispiel einer Biegeanordnung,
- Figur 2
- eine vergrößerte Darstellung des linken Bereichs der Figur 1,
und - Figur 3
- eine vergrößerte Darstellung der in den Figuren 1 und 2 linken Biegeeinrichtung.
Claims (15)
- Biegeanordnung zum Biegen kleiner oder werkzeugunabhängiger Biegeradien in ein rohrförmiges Biegeteil (10), die mindestens eine Ring- und Segment biegeeinrichtung (2, 3) aufweist, in der die zur Durchführung der Biegefunktion erforderlichen Biegewerkzeuge (4a, 4b, 4c; 5) angeordnet sind, und die eine Vorschubeinrichtung (35; 4a-4c) zum Vorschub des Biegeteils (10) aufweist, wobei die Biegeeinrichtung (2) in Vorschubrichtung des Biegeteils (10) vor der Vorschubeinrichtung (35) angeordnet ist, dadurch gekennzeichnet, daß die Biegeanordnung (1) eine Domvorschubeinrichtung (40) aufweist, deren Domeinsatz (43) in den durch die Biegewerkzeuge (4a-4c; 5) festgelegten Biegebereich der Biegeeinrichtung (2) einschiebbar oder eingeschoben ist, und daß die Biegeeinrichtung (2) eine Einrichtung zum Ausgleich einer Ausschwenkbewegung des Biegeteils (10) bei dem durch die Biegewerkzeuge (4a-4c; 5) durchgeführten Biegevorgang des Biegeteils (10) aufweist.
- Biegeanordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Dorneinsatz (43) über ein Domgestänge (42) mit dem der Biegeeinrichtung (2) gegenüberliegenden Endbereich einer die Domvorschubeinrichtung (40) tragenden Einrichtung (3) verbunden ist.
- Biegeanordnung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Dorneinsatz (43) in Vorschubrichtung des Biegeteils (10) durch eine Domvorschubeinheit (40) verschiebbar ist.
- Biegeanordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Dornvorschubeinheit (40) einen hydraulisch oder pneumatisch betätigbaren Zylinder (47) aufweist, der mit einem Ende (42") des Domgestänges (42) verbunden ist.
- Biegeanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Ausgleichseinrichtung der Biegeeinrichtung (2) dadurch ausgebildet ist, daß ein die Biegewerkzeuge (4a-4c; 5) tragende Biegetisch (2a) um eine senkrecht zur Vorschubrichtung des Biegeteils (10) verlaufende Achse gegenüber einem Unterteil (2b) der Biegeeinrichtung (2) beweglich ist.
- Biegeanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Biegeeinrichtung (2) in Vorschubrichtung des Biegeteils (10) in einem durch den Biegevorgang im wesentlichen nicht veränderlichen Abstand zur Einrichtung (3) angeordnet ist.
- Biegeanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Einrichtung (3) einen Vorschubschlitten (35) für das Biegeteil (10) aufweist, durch den das Biegeteil (10) in Vorschubrichtung verschiebbar ist.
- Biegeanordnung nach Anspruch 7, dadurch gekennzeichnet, daß der Vorschubschlitten (35) von einer Antriebseinheit (36) antreibbar ist.
- Biegeanordnung nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, daß der Vorschubschlitten (35) zum Ausgleich einer Ausgleichsbewegung des Biegeteils (10) von der Antriebseinheit (36) entkoppelbar ist.
- Biegeanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Verbindung zwischen dem Biegetisch (2a) und dem Unterteil (2b) der Biegeeinrichtung derart ausgestaltet ist, daß die Beweglichkeit des Biegetischs (2a) gegenüber dem Unterteil (2b) in der zur Einbringung des Biegeradius in das Biegeteil (10) erforderlichen Richtung gegeben ist, daß aber ein Rückdrehen des Biegetischs (2a) erschwert oder verhindert ist.
- Biegeanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Dorneinsatz (43) als ein Gliederdom mit mehreren Dorngliedern (43a-43c) ausgebildet ist.
- Biegeanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Biegeeinrichtung (2) und die das Domgestänge (42) tragende Einrichtung (3) gegeneinander abgestützt sind.
- Biegeanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Biegeeinrichtung (2) Rollen (48) aufweist.
- Biegeanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Einrichtung (3) als zweite Biegeeinrichtung ausgestaltet ist.
- Biegeanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Vorschubeinrichtung für das Biegeteil (10) durch die Walzen (4a-4c) der Biegeeinrichtung (2) ausgebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29806872 | 1998-04-17 | ||
DE29806872U | 1998-04-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0963800A2 EP0963800A2 (de) | 1999-12-15 |
EP0963800A3 EP0963800A3 (de) | 2000-04-05 |
EP0963800B1 true EP0963800B1 (de) | 2003-06-18 |
Family
ID=8055814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99107723A Expired - Lifetime EP0963800B1 (de) | 1998-04-17 | 1999-04-19 | Biegeanordnung zum Biegen kleiner und kleinerer oder werkzeugunabhängiger Biegeradien |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0963800B1 (de) |
DE (2) | DE59905974D1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19956796A1 (de) * | 1999-11-25 | 2001-06-13 | Palima W Ludwig & Co | Biegevorrichtung für das 2- und 3-dimensionale Profilbiegen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1227122B (it) * | 1988-09-30 | 1991-03-15 | Blm Spa | Macchina per curvare automaticamente tubi e materiali simili |
DE4041668A1 (de) * | 1990-12-22 | 1992-07-02 | Walter E Spaeth | Verfahren zum biegen von metall-hohlprofilen und vorrichtung zur ausuebung des verfahrens |
DE29714487U1 (de) * | 1997-08-13 | 1997-10-16 | Rasi Maschinenbau u. -handels-GmbH, 75428 Illingen | Biegemaschine mit mindestens zwei Biegefunktionen |
-
1999
- 1999-04-19 DE DE59905974T patent/DE59905974D1/de not_active Expired - Fee Related
- 1999-04-19 EP EP99107723A patent/EP0963800B1/de not_active Expired - Lifetime
- 1999-04-19 DE DE29906785U patent/DE29906785U1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0963800A2 (de) | 1999-12-15 |
DE59905974D1 (de) | 2003-07-24 |
DE29906785U1 (de) | 1999-11-25 |
EP0963800A3 (de) | 2000-04-05 |
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