EP1948371A1 - Machine pour la cambrage, le formage, le pliage ou le cintrage de barres, de fils ou de profiles et procede employant une telle machine - Google Patents
Machine pour la cambrage, le formage, le pliage ou le cintrage de barres, de fils ou de profiles et procede employant une telle machineInfo
- Publication number
- EP1948371A1 EP1948371A1 EP06808210A EP06808210A EP1948371A1 EP 1948371 A1 EP1948371 A1 EP 1948371A1 EP 06808210 A EP06808210 A EP 06808210A EP 06808210 A EP06808210 A EP 06808210A EP 1948371 A1 EP1948371 A1 EP 1948371A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- jaw
- tube
- machine according
- machine
- 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 174
- 238000000034 method Methods 0.000 title claims description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000009740 moulding (composite fabrication) Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 description 6
- 230000009747 swallowing Effects 0.000 description 4
- 229910001234 light alloy Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
-
- 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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
- B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
-
- 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
- B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
- B21D9/07—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only
- B21D9/073—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only with one swinging forming member
Definitions
- Machine for cambrag ⁇ forming, folding or bending bars, wires or profiles
- the invention relates to a machine for bending, forming, folding or bending bars, wires or profiles.
- the invention therefore aims to solve these major difficulties by providing a bending machine with a bending head of a new type.
- the present invention relates to a machine for bending, forming, folding or bending a tube, a bar, a wire or a profile having a bending form having a clamping system, a device for orienting the tube and a bending jaw, characterized in that:
- the bending jaw is prismatic and machined to the diameter of the tube on at least one of its faces
- the kinematics of displacement of the bending jaw in a peripheral area to the bending form is ensured by any combination of at least two movements, rectiiigne or rotary, the bending jaw is rotatable about a median axis perpendicular to the bending plane,
- the bending jaw is movable in the vertical direction to allow positioning to the right or left of the tube to be bent and the superposition of several shapes or diameters.
- the bending jaw can be moved in a peripheral area to the bending form so as to apply to the tube to be bent in multiple configurations.
- Figure 1 shows a swallowing machine according to the known prior art.
- Figure 2 illustrates a winding bending machine according to the known prior art.
- Figure 3 illustrates the two essential elements of the invention, the bending form and the bending jaw.
- Figure 4 shows the space of the horizontal plane in which the bending jaw can move during bending operations.
- Figures 5 and 6 show the possible movements of the bending jaw in rotation and along the vertical axis.
- FIGS 7, 8 and 9 illustrate a conventional operation of bending in the clockwise direction.
- Figures 10 and 11 show a bending operation in the counterclockwise direction.
- Figures 12 and 13 show the progress of a wide angle bending on the machine according to the invention.
- Figures 14 and 15 show the bending of a tube having ancillary parts.
- Figures 16, 17 and 18 show a bending with a two-stage bending jaw for a minimum straight segment, or zero, between two hangers.
- Figures 19, 20 and 21 show the particular displacement of the bending jaw in the case of bending a fragile tube.
- Figures 22 to 27 illustrate the different sequences of the bending of a fragile tube having an attachment.
- Figure 28 shows a variant of the invention.
- tube is used in the description below to generally designate a part that can be a bar, a wire, a profile or a tube before bending.
- the movements are presented in a horizontal plane, these achievements are of course reproducible in all work plans.
- a bending machine comprises a frame supporting the bending form, a clamping device for maintaining the tube throughout its shaping and a tube orientation device.
- FIGS. 3 to 28 show schematically only the essential elements of the machine, namely the bending form and the bending jaw.
- the prior art of the bending technique is known in two main forms, a so-called “swallowing” technique, shown in FIG. 1, and a so-called “winding” technique illustrated in FIG.
- the tube 1 is clamped on the bending form 2 and rotated by the latter.
- the tube 1 being maintained during bending by a strip 3 which can be fixed or sliding.
- This machine has several drawbacks in particular because for segments between weak hangers the jaw must be machined to the shape of the previous hanger, in that the bending head is unidirectional and thus the bending is only feasible in a clockwise direction or counterclockwise, and that the jaw to ensure the non-sliding of the tube during bending can print marks on it, especially in the case of light alloys.
- the tube 1 is flanged on the fixed part and a movable member carried by the head 4, for example a roller 5, winds the tube on the fixed form 6.
- FIG. 3 The two essential elements of the bending machine according to the invention are shown diagrammatically in FIG. 3.
- the bending form 7 is double in this representation and the bending jaw 8 has a particular prismatic shape.
- the bending form may be symmetrical or non-symmetrical. According to a variant of the invention illustrated in Figure 28 it is also envisaged the use of a simple bending form with a particular clamping device.
- the double bending form 7 allows folds in the clockwise or counterclockwise direction depending on the position of the bending jaw 8.
- the tube to be deformed being positioned in the center of the double shape and maintained inside thereof.
- the jaw 8 of bending is prismatic and machined to the radius of the tube on at least one of its faces.
- the jaw will be machined on its two lateral faces 9, 10 so as to allow bending in the two possible directions in the plane of the bending form.
- the inner shape of the jaw 8 is generally concave and advantageously of complementary shape with dimensions adapted to fit the semicircle of the bending form.
- the bending jaw according to the invention also has the particularity of being able to be positioned according to very many configurations:
- the jaw 8 for bending is also rotatable about an axis 12 passing through it in its median part and located perpendicularly to the plane of the two shapes and therefore the bending plane, as shown in Figure 5.
- the bending jaw 8 is movable in the vertical direction, along the axis 12, to allow multiple bending, as shown in Figure 6.
- the bending jaw 8 can move in three dimensions around the bending form and adopt a multitude of positions to achieve the bends.
- Figures 7 to 27 illustrate particular cases of bends and specific achievements.
- Figures 7 to 9 show a bending in the clockwise direction with a fixation of the bending jaw very close to the bending form.
- Figures 10 and 11 show the positioning of the jaw 8 for a bending in the counterclockwise direction and the position of said jaw 8 at the end of bending.
- Figures 12 and 13 show a displacement of the. 8 jaws bending along the axis of the tube 1, the winding around the shape is accordingly more pronounced.
- FIGS. 14 and 15 show an example of bending taking into account an auxiliary part 13 placed on the tube, additional parts that can be carried by tubes before bending are for example flanges, valves, connectors, etc. in this example the jaw 8 retains its position relative to the ancillary part throughout the bending by describing a circular arc.
- Figures 16 to 18 illustrate a bending using a two-stage bending jaw 14 to support the previous hanger to meet a minimum straight segment between hangers. It can also be provided a recess arranged in the form of bending in the case of chained or nested hangers.
- the jaw can move in rotation about its median axis 12 and along this same vertical axis, in fact it is advantageous to place different machined shapes on the sides of the jaw so as to achieve different bends with the same bit.
- a two-stage bending jaw 14 may have a stage 15 used in a first bend and a second stage 16, in the vertical direction, used for a second bending once. retracted said stage 15, the reoriented tube and the jaw 14 moved upwards.
- This retraction of one or more stages can be achieved in different ways, for example by pivoting the stage about an axis 18.
- the bending machine may comprise a jaw having at least one retractable facet, and said retractable facet is retracted by tilting or pivoting about a hinge disposed on the jaw itself.
- Figures 19 to 21 show a variant of the invention in which the behavior of the bending tube does not tolerate the free winding of the tube, for example in a case where there is a risk of waves or breakage of a tube to thin wall, in this situation it is advantageous to manufacture a very long bending jaw 19 for maintaining the tube 1 during bending.
- the bending jaw 19 operates a rocking movement respecting the tangency of the curvature of the hanger so that there is no sliding of the bending jaw relative to the bent tube.
- the jaw can move in a peripheral area in the form of double bending, this is particularly advantageous in the case where obstacles are on the part to be made and that the bending must be particularly pronounced.
- FIGS. 22 to 27 it is possible to move the jaw and execute the bending by successive sequences of weak angles, these sequences are determined by the developed length that allows the length of the bending jaw.
- the invention also relates to a method of bending a tube employing a machine as described above wherein the jaw is moved at least once on said tube during the shaping operation.
- the jaw can be moved in a peripheral area 11 to the bending form.
- the jaw can be moved in a vertical direction or in rotation about a vertical axis therethrough, perpendicular to the bending plane, or a combination of the two previous movements.
- FIG. 22 to 27 An example of displacement of the jaw during the bending is illustrated in Figures 22 to 27, Figures 22 and 23 showing the bending of the first sector of a tube 1 having an obstacle 20, Figures 24 and 25 showing the clearance of the jaw 8 and its repositioning on the tube after the obstacle 20. Finally, Figures 26 and 27 illustrate the bending of the second sector.
- FIG. 28 An important variant of the invention is shown in FIG. 28.
- This variant consists in providing a symmetrical or non-symmetrical simple bending form, stepped or unstaged 21, with a clamping device for the tube 1 mounted on a rocker 22 and comprising two jaws that can be straight or have a stepped or unstaged form 23 and 24.
- the bending jaws 23 and 24 may themselves be equipped with bending shapes, so as to multiply the possible combinations.
- the bending jaw 8 is prismatic and machined to the radius of the tube on at least one of its faces, the movement kinematics of the bending jaw is effected in a peripheral area at the bending form and the jaw is steerable both in rotation and movable on a vertical axis.
- clamping jaws 23 and 24 allow an alternating clamping on the right or left and the tilting device allows to completely retract the jaw inoperative of the work area and allowing the realization of bending up to 180 °.
- the rocker 22 comprises two crank pins ensuring the guide of the balance and its trajectory in a form 25.
- Which form 25 having flanges so as to ensure precisely the desired movement.
- the rocker 22 is driven by a crankshaft assembly, pin and square nut sliding in a groove of the balance.
- the bending machine can for example be envisaged a conformation of the jaw 8 of simple or complex bending, with one or more facets, which facets can be articulated in different ways on the jaw, and it can be provided a jaw with several floors without departing from the scope of the invention.
- the tubes, bars, wires or profiles can be of various sizes and natures without departing from the scope of the invention.
- the machine comprising the features of the invention may also be numerically controlled or not.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Basic Packing Technique (AREA)
- Package Frames And Binding Bands (AREA)
- Ropes Or Cables (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0511016A FR2892648B1 (fr) | 2005-10-28 | 2005-10-28 | Machine pour la cambrage, le fromage, le pliage ou le cintrage de barres, de fils ou de profiles |
| PCT/FR2006/002197 WO2007048893A1 (fr) | 2005-10-28 | 2006-09-28 | Machine pour la cambrage , le fromage , le pliage ou le cintrage de barres , de fils ou de profiles et procede employant une telle machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1948371A1 true EP1948371A1 (fr) | 2008-07-30 |
| EP1948371B1 EP1948371B1 (fr) | 2009-01-21 |
Family
ID=36939249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06808210A Active EP1948371B1 (fr) | 2005-10-28 | 2006-09-28 | Machine pour la cambrage, le formage, le pliage ou le cintrage de barres, de fils ou de profiles et procede employant une telle machine |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US8220304B2 (fr) |
| EP (1) | EP1948371B1 (fr) |
| AT (1) | ATE421392T1 (fr) |
| BR (1) | BRPI0617825A2 (fr) |
| CA (1) | CA2625872A1 (fr) |
| DE (1) | DE602006005011D1 (fr) |
| ES (1) | ES2321656T3 (fr) |
| FR (1) | FR2892648B1 (fr) |
| WO (1) | WO2007048893A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRM20130259A1 (it) | 2013-05-02 | 2014-11-03 | Cml Int Spa | Macchina curvatrice del tipo a matrice e contromatrice per curvare a destra e a sinistra un pezzo allungato |
| CN107005134B (zh) | 2014-12-26 | 2019-02-26 | 日立汽车系统株式会社 | 线圈成形装置和旋转电机的线圈 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2389937A (en) * | 1943-03-29 | 1945-11-27 | Schmitt Alfred | Tube bending machine |
| US4206629A (en) * | 1979-03-05 | 1980-06-10 | American Machine & Hydraulics, Inc. | Back shoe for a tube bender |
| DE3616302A1 (de) * | 1986-05-14 | 1987-11-19 | Schwarze Rigobert | Rohrbiegemaschine |
| US4833907A (en) * | 1987-12-04 | 1989-05-30 | Samuel Grimaldo | Consolidated backshoe die for a tube bender machine |
| FR2715334B1 (fr) * | 1994-01-21 | 1996-03-08 | Automatisation Ste Francaise | Machine pour cintrer un matériau se présentant sous une forme sensiblement rectiligne. |
| US6155091A (en) * | 1999-02-26 | 2000-12-05 | Arvin Industries, Inc. | Mandrel assembly for tube-bending apparatus |
| FR2806943B1 (fr) * | 2000-04-03 | 2002-08-16 | Macsoft | Machine de cintrage de barres a nez de pliage effacable |
| US6651475B1 (en) * | 2002-05-03 | 2003-11-25 | Beckett Gas, Inc. | Tube bending apparatus |
| FR2841162B1 (fr) * | 2002-06-25 | 2005-01-14 | Silfax | Support de reglette pour machine a cintrer les tubes |
-
2005
- 2005-10-28 FR FR0511016A patent/FR2892648B1/fr not_active Expired - Fee Related
-
2006
- 2006-09-28 AT AT06808210T patent/ATE421392T1/de not_active IP Right Cessation
- 2006-09-28 BR BRPI0617825-1A patent/BRPI0617825A2/pt not_active IP Right Cessation
- 2006-09-28 US US12/091,044 patent/US8220304B2/en active Active
- 2006-09-28 ES ES06808210T patent/ES2321656T3/es active Active
- 2006-09-28 DE DE602006005011T patent/DE602006005011D1/de active Active
- 2006-09-28 WO PCT/FR2006/002197 patent/WO2007048893A1/fr not_active Ceased
- 2006-09-28 EP EP06808210A patent/EP1948371B1/fr active Active
- 2006-09-28 CA CA002625872A patent/CA2625872A1/fr not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007048893A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2625872A1 (fr) | 2007-05-03 |
| US8220304B2 (en) | 2012-07-17 |
| ATE421392T1 (de) | 2009-02-15 |
| US20080295559A1 (en) | 2008-12-04 |
| BRPI0617825A2 (pt) | 2011-08-09 |
| WO2007048893A1 (fr) | 2007-05-03 |
| DE602006005011D1 (de) | 2009-03-12 |
| FR2892648A1 (fr) | 2007-05-04 |
| FR2892648B1 (fr) | 2007-12-14 |
| ES2321656T3 (es) | 2009-06-09 |
| EP1948371B1 (fr) | 2009-01-21 |
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