EP1149640A2 - Biegevorrichtung für dünnwandige Metallrohre - Google Patents
Biegevorrichtung für dünnwandige Metallrohre Download PDFInfo
- Publication number
- EP1149640A2 EP1149640A2 EP01108674A EP01108674A EP1149640A2 EP 1149640 A2 EP1149640 A2 EP 1149640A2 EP 01108674 A EP01108674 A EP 01108674A EP 01108674 A EP01108674 A EP 01108674A EP 1149640 A2 EP1149640 A2 EP 1149640A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mandrel
- bending device
- clamping
- clamping head
- bending
- 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.)
- Granted
Links
- 238000005452 bending Methods 0.000 title claims abstract description 46
- 239000002184 metal Substances 0.000 title claims description 3
- 238000000034 method Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 230000037303 wrinkles Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004804 winding Methods 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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
Definitions
- the invention relates to a bending device for thin-walled metal pipes from a straight pipe guide, one adjoining and opposite the Pipe guide with swiveling core template Terminal strip, and a mandrel, the mandrel shaft (5) and a mandrel part that is flexible in the area of the core template which is connected to the Mandrel shaft is spring-loaded.
- Bending devices of this and similar types are known (Journal “Werkstatt und strig 104 (1971) 4, pages 271 to 274 "," Prevention of Wrinkles and Bending of thin-walled tubes when bending "by Prof. Dr.-Ing. G. ⁇ hler, Bad Dürkheim).
- Thin-walled means in this context pipes, their wall thickness based on the diameter and the bending radius small is, e.g. B. Pipes with a wall thickness of approximately 0.8 mm a diameter of approx. 80 mm and a bending radius of approx. 120 mm.
- a bending device of the type mentioned Art known (DE 197 07 228 A1), but not for thin-walled pipes in the sense described above, but for Pipes with very small diameters is determined.
- This bending device consists of the flexible mandrel part several spherical joint members, which together with the Mandrel shaft resilient by means of the inner tension rope are tense.
- This bending device that becomes bending pipe in the not to be bent before the flexible section of the mandrel lying only from the outside between the core template and the terminal block clamped.
- the mandrel is not taken, but is axially fixed. You would try thin-walled with such a bending device To bend pipes, then the pipe would be due to the necessary large radial clamping forces radially be pushed in.
- the invention has for its object a To create bending device of the type mentioned in the introduction, the one with a short clamping length of the pipe start gets along and the making a curvature with over the entire length allows circular cross-section.
- the mandrel as flexible mandrel part has a coil spring that axially between a spherical clamping head and the Mandrel shaft is arranged, the tube to be bent between the clamping head and the core template with their Terminal block can be clamped non-positively.
- the Clamping head firmly clamps the beginning of the pipe relatively short length because of the spherical shape of the clamping head has a high clamping force can be easily applied. Because in the area of If there is no bend at the beginning of the pipe, this plays here Constriction problem as in the prior art with spherical inserts used in the bending area Joint members, occurs, does not matter.
- the coil spring should unbent condition at least on the outside a smooth form cylindrical support surface.
- the axial preload of the coil spring can be adjust that the pressure piece on a Compression spring is supported, which in turn on a Tensioning cable is supported.
- the clamping head can be made from a slotted Outer ring and an inner support and clamping cone consist of the self-tensioning on the bending process Outer ring works. This alternative is based on the Pulling force exerted on the tube during the bending process Tension ring and the tension cone transferred and in the sense an expansion of the outer ring and thus a firmer Clamping effect exploited, while that of the traction device Return the clamping head exerted force in the sense of solution works.
- the clamping head can also be made from consist of several, in particular two spherical links, which form a rigid structural unit. Because of the middle Constriction and rounding also occurs in this If there is no jamming in the elbow when Withdraw the clamping head. This solution stands out with a simple construction, especially by a optimal guidance and particularly good Post-profiling properties.
- this runs Tensioning rope eccentrically through the tube on the inner arch along. This ensures that the section of the pipe to be bent firmly against the Inside of the inner coil of the coil spring pressed becomes.
- the bending device consists of a fixed one straight pipe guide 1, an adjoining pivotable core template 2 with a terminal strip 3 and one arranged in the area of the core template 2 Mandrel 4 with it in the area of Pipe guide 1 located mandrel shaft 5.
- the mandrel 4 consists of a flexible mandrel part 4a in the form of a Coil spring and a spherical clamping head 4b preferably two spherical limbs that are rigid Form unit.
- the flexible part 4a of the mandrel 4 Clamping head 4b and the mandrel shaft 5 are axially over one Tensioning rope 6 biased with head piece 6a. This is what a between the mandrel shaft 5 and a tensioning screw 7 attached to the tensioning cable 6 arranged compression spring 8.
- the tension cable 6 engages Tension element 9, via which the mandrel 3 after Bending process can be withdrawn.
- the operation of the bending device according to the invention is the following:
- Figure 2 differs of that of Figure 1 only in the clamping head. So far Correspondences exist, are the same reference numerals used for the individual parts as in Figure 1.
- the tensioning head 14 consists of a slotted, spherical outer ring 14a and a support and tensioning cone 14b, on which the spring-loaded head piece 6a of the inner tensioning cable 6 acts.
- the operation of the bending device of the embodiment of Figure 2 largely corresponds to that of the embodiment of Figure 1, so that only the different effect of the clamping head is discussed:
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
Die Arbeitsweise der Biegevorrichtung des Ausführungsbeispieles der Figur 2 entspricht weitgehend derjenigen des Ausführungsbeispiels der Fig. 1, so daß nur noch auf die unterschiedliche Wirkung des Spannkopfes eingegangen wird:
Claims (6)
- Biegevorrichtung für dünnwandige Metallrohre (R) aus einer geraden Rohrführung (1), einer sich daran anschließenden und gegenüber der Rohrführung (1) verschwenkbaren Kernschablone (2) mit Klemmleiste (3), und einem Dorn (4), der einen Dornschaft (5) und einen im Bereich der Kernschablone (2) biegsamen Dornteil (4a) aufweist, der mittels eines inneren Spannseils (6) mit dem Dornschaft (5) federelastisch verspannt ist,
dadurch gekennzeichnet , daß der Dorn (4) als biegsamen Dornteil (4a) eine Schraubenfeder aufweist, die axial zwischen einem kugeligen Spannkopf (4b, 14) und dem Dornschaft (5) angeordnet ist, wobei das zu biegende Rohr (R) zwischen dem Spannkopf (4b, 14)) und der Kernschablone (2) mit ihrer Klemmleiste (3) kraftschlüssig einklemmbar ist. - Biegevorrichtung nach Anspruch 1,
dadurch gekennzeichnet , daß die Schraubenfeder (4a) im ungebogenen Zustand zumindest außenseitig eine glatte zylindrische Stützfläche bildet.. - Biegevorrichtung nach Anspruch 1 oder 2
dadurch gekennzeichnet , daß das Druckstück (5) an einer Druckfeder (8) abgestützt ist, die ihrerseits an einer am Spannseil (6) widergelagerten Spannschraube (7) abgestützt ist. - Biegevorrichtung nach einem der Ansprüche 1 bis 3
dadurch gekennzeichnet , daß der Spannkopf (14) aus einem geschlitzten Außenring (14a) und einem inneren Stütz- und Spannkonus (14b) besteht, der beim Biegevorgang selbstspannend auf den Außenring (14a) wirkt. - Biegevorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet , daß der Spannkopf (14b) aus mehreren kugeligen Gliedern besteht, die eine starre Baueinheit bilden. - Biegevorrichtung nach einem der Ansprüche 1 bis 5
dadurch gekennzeichnet , daß das Spannseil (6) exzentrisch durch das Rohr (R) am Rohrinnenbogen entlang verläuft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10020727 | 2000-04-27 | ||
| DE10020727A DE10020727C1 (de) | 2000-04-27 | 2000-04-27 | Biegevorrichtung für dünnwandige Metallrohre |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1149640A2 true EP1149640A2 (de) | 2001-10-31 |
| EP1149640A3 EP1149640A3 (de) | 2002-10-09 |
| EP1149640B1 EP1149640B1 (de) | 2004-06-23 |
Family
ID=7640152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01108674A Expired - Lifetime EP1149640B1 (de) | 2000-04-27 | 2001-04-06 | Biegevorrichtung für dünnwandige Metallrohre |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1149640B1 (de) |
| AT (1) | ATE269763T1 (de) |
| DE (2) | DE10020727C1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115016032A (zh) * | 2022-06-24 | 2022-09-06 | 华电国际电力股份有限公司邹县发电厂 | 一种电厂锅炉受热面管道通球试验装置及异物检查方法 |
| US11577048B2 (en) | 2019-03-01 | 2023-02-14 | Argon Medical Devices, Inc. | Medical device bending tool |
| CN120347097A (zh) * | 2025-06-26 | 2025-07-22 | 张家港乔昇精密机械制造有限公司 | 一种三工位异型弯管机 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10246977B4 (de) | 2002-10-09 | 2007-06-28 | Thyssenkrupp Steel Ag | Vorrichtung zum 3D-Freiformbiegen von Profilen |
| CN110893427B (zh) * | 2019-12-23 | 2024-04-26 | 江苏金鑫电器有限公司 | 一种螺旋焊管的弯曲工装 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1675574A (en) * | 1927-04-25 | 1928-07-03 | William K Mykins | Plumber's lead-pipe-bending spring |
| US2760545A (en) * | 1952-06-23 | 1956-08-28 | Solemslie Sverre | Pipe bending tool |
| DE3824312A1 (de) * | 1988-07-18 | 1990-01-25 | Rolf Dipl Ing Euler | Vorrichtung zur formung von werkstuecken und betaetigungsvorrichtung |
| DE19707228A1 (de) * | 1997-02-24 | 1998-08-27 | Rudi Maas | Biegedorn |
-
2000
- 2000-04-27 DE DE10020727A patent/DE10020727C1/de not_active Expired - Fee Related
-
2001
- 2001-04-06 AT AT01108674T patent/ATE269763T1/de not_active IP Right Cessation
- 2001-04-06 DE DE50102653T patent/DE50102653D1/de not_active Expired - Fee Related
- 2001-04-06 EP EP01108674A patent/EP1149640B1/de not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11577048B2 (en) | 2019-03-01 | 2023-02-14 | Argon Medical Devices, Inc. | Medical device bending tool |
| CN115016032A (zh) * | 2022-06-24 | 2022-09-06 | 华电国际电力股份有限公司邹县发电厂 | 一种电厂锅炉受热面管道通球试验装置及异物检查方法 |
| CN120347097A (zh) * | 2025-06-26 | 2025-07-22 | 张家港乔昇精密机械制造有限公司 | 一种三工位异型弯管机 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50102653D1 (de) | 2004-07-29 |
| EP1149640B1 (de) | 2004-06-23 |
| ATE269763T1 (de) | 2004-07-15 |
| EP1149640A3 (de) | 2002-10-09 |
| DE10020727C1 (de) | 2001-10-04 |
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