EP2641668A1 - Plieuse de tôle - Google Patents

Plieuse de tôle Download PDF

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Publication number
EP2641668A1
EP2641668A1 EP13160151.0A EP13160151A EP2641668A1 EP 2641668 A1 EP2641668 A1 EP 2641668A1 EP 13160151 A EP13160151 A EP 13160151A EP 2641668 A1 EP2641668 A1 EP 2641668A1
Authority
EP
European Patent Office
Prior art keywords
bending
bending machine
profile
machine
sheet 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.)
Withdrawn
Application number
EP13160151.0A
Other languages
German (de)
English (en)
Inventor
Gerald Leitenbauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trumpf Maschinen Austria GmbH and Co KG
Original Assignee
Trumpf Maschinen Austria GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Trumpf Maschinen Austria GmbH and Co KG filed Critical Trumpf Maschinen Austria GmbH and Co KG
Publication of EP2641668A1 publication Critical patent/EP2641668A1/fr
Withdrawn legal-status Critical Current

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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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/02—Die constructions enabling assembly of the die parts in different ways
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/20—Making tools by operations not covered by a single other subclass
    • 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
    • B21D9/08—Bending tubes using mandrels or the like in press brakes or between rams and anvils or abutments; Pliers with forming dies

Definitions

  • the invention relates to a sheet metal bending machine with a bending tool, which comprises a plurality of planar juxtaposed, mutually parallel aligned and connected to a disk set Biegellamellen whose edges form a generally cylindrical bending profile in a molding area.
  • Such sheet metal bending machines are in principle from the WO 2010/022426 A1 , of the DE 44 09 556 A1 and the US 5,878,619 A known. These reveal bending tools, in particular for the Gesenkbiegen, in the form of a punch and / or a Biegegesenkes from a package of composite lamellae. The lamellae are lined up in the direction of a bending axis of the tool one behind the other flat and assembled into a package, for example screwed.
  • a disadvantage of these known bending tools is that they can be used in each case only for a certain bending radius. If workpieces with different bending radii are to be produced, then the bending tools must be exchanged, which results in a high expenditure of time for the conversion of the sheet metal bending machine. In addition, separate lamellae must be made for each bending radius.
  • the object of the invention is therefore to provide an improved sheet metal bending machine, in particular one that is universally applicable.
  • the object of the invention is achieved by a sheet metal bending machine of the type mentioned, in which the bending blades are aligned parallel to a generatrix of the cylindrical bending profile.
  • the lamellae form along a workpiece-facing edge a molding area with a generally cylindrical bending profile.
  • different bending radii for example in a range of 50-150 mm
  • different bending radii can be provided by the molding area is set to a circular cylindrical bending profile, or even bending profiles of general shape, such as wave-shaped bending profiles are set.
  • the sheet metal bending machine can be designed, for example, as a press bending machine or press brake, whose punch and / or its die is formed by said disk set / are.
  • die bending also referred to as "folding”
  • the sheet to be bent is placed on a die (also referred to as a "die") with a V-shaped opening.
  • the punch also referred to as "upper tool” or "sword”
  • the sheet metal forming takes place.
  • different shapes in particular different bending radii, can be set for punch and / or die.
  • the plate bending machine can also be designed as a folding machine whose upper cheek is formed by said plate set.
  • a folding machine whose upper cheek is formed by said plate set.
  • each Biegelamelle faces the workpiece to be bent.
  • the totality of these edges of several or all lamellae forms a molding area with a generally cylindrical bending profile.
  • “generally cylindrical” means a shape that arises by displacement of a flat surface or a curve along a straight line transversely to said plane.
  • the straight lines which lead away from the edge of the flat surface or the curve in the direction of displacement are called “generators”.
  • the bending profile is formed by a circular arc segment, which is expanded to a cylinder jacket segment. The bending tool then has a bending radius in the molding area.
  • the bending blades are permanently connected to each other. This prevents the Biegellamellen slip during operation of the sheet metal bending machine or when handling the bending tool against each other.
  • said disk pack is suitable for realizing a large number of bending profiles, different bending profiles can be produced with a plurality of identical sets of disks, in contrast to the disk packages known from the prior art, in which only one specific bending profile can be selected from a set of disks can be produced.
  • the bending blades of the disk pack can be welded.
  • the bending blades are adjustable transversely to a generatrix of the cylindrical bending profile and the sheet bending machine comprises a tensioning device which presses the bending blades against each other.
  • the slats can be screwed into a package.
  • the bending blades are adjustable during operation of the sheet metal bending machine, that is, the disk set for setting does not have to be removed from the sheet metal bending machine.
  • screws for clamping the disk pack can also serve but also pneumatically, hydraulically, electrically or manually operated clamping devices.
  • the sheet metal bending machine is equipped or can be equipped with a profile gauge which can be brought into contact with the disk pack in the molding area or an inverse molding area opposite the molding area.
  • the slats can be easily brought into position.
  • the profile gauge consist of an elongated cuboid, in the top of a hollow cylindrical groove (ie, a negative profile) is incorporated. If this profile gauge is brought into position in the forming area of the bending tool (in the case of a bending punch of a press brake, that is, below the punch, which is usually arranged above the die), the profile of the profile gauge can be transferred to the bending tool.
  • the profile gauge it is also possible for the profile gauge to be brought into contact with the lamellae in an inverse-shaped area opposite the molding area (in the case of the already mentioned bending punch, that is to say on its upper side).
  • the profile gauge is provided with a positive profile, which is then transferred to the slats.
  • the bending blades are rounded in the molding area. In this way, a multiplicity of bending profiles can be realized with the disk pack without the individual disks pressing too strongly into the workpiece.
  • the disk set comprises at least three bending blades, in a more favorable embodiment, at least five bending blades and, in an even more favorable embodiment, at least seven bending blades.
  • bending radii can be approximated well.
  • the bending blades touch each other directly. As a result, the shearing force generated during the bending operation between the bending blades is transferred particularly well between them. It is also conceivable, of course, that further elements are arranged between the individual bending blades, for example thin plates made of a material with a high coefficient of friction. Preferably, this material also has a high shear modulus and high shear strength.
  • a bending blade is roughened on its contact surface to an adjacent bending blade and / or has a toothing, in particular a micro-toothing, and / or a groove structure or groove structure.
  • a toothing or a groove or groove structure for this purpose is aligned parallel to the generatrix of the bending profile.
  • the bending blades have substantially identical external dimensions. As a result, the bending tool can be produced particularly efficiently.
  • Biegellamellen are the same thickness. This is another measure for the particularly efficient production of the bending tool.
  • the slats can also be different in thickness.
  • the bending blades are wedge-shaped, tapered away from the mold area. In this way, a displacement of the bending blades with each other can be effectively avoided, since the Biegellamellen are increasingly pressed against each other due to the wedge effect with increasing (bending) pressing pressure.
  • Fig. 1 shows a schematic variant of a bending tool 1 in an oblique view.
  • the bending tool 1 comprises a plurality of planar juxtaposed, mutually parallel and mutually connected to a disk set Biegellamellen 2. Their edges form a generally cylindrical bending profile in a mold section 3, wherein the Biegellamellen 2 are aligned parallel to a generatrix 4 of the cylindrical bending profile.
  • the bending tool 1 also includes a holding portion 5, on which it, for example can be clamped in a bending machine.
  • FIGS. 2 and 3 now show how the bending tool 1 from the Fig. 1 can be used in a Gesenkbiegemaschine 6.
  • the punch / the sword of the Gesenkbiegemaschine 6 is formed by the disk set.
  • the die 8 is formed in a similar manner as the stamp 1 by a disk set.
  • the in Fig. 2 shown state is the still unbent workpiece 7 on the die 8 of the Gesenkbiegemaschine 6.
  • the punch 1 was moved in the direction of the die 8, so that the workpiece 7 has deformed accordingly.
  • the Fig. 4 further shows that the bending tool 1 from the Fig. 1 can also be used in a pivoting bending machine 9.
  • the upper beam of the pivoting bending machine 9 is formed by a disk set 1.
  • the Fig. 4 is shown a state in which between the upper beam 1 and the lower beam 10 clamped workpiece 7 has already been bent by a pivoting movement of the bending beam 11.
  • the bending tool 1 can be easily adjusted to different requirements. In particular, different bending radii can be adjusted.
  • the Fig. 5 shows a profile gauge 12, which can be brought into contact with the disk set 1 in the molding area 3, so that the shape of the profile gauge 12 is transmitted to the disk set 1.
  • the profile gauge 12 is brought under the disk set (sword) 1 in position and this lowered afterwards.
  • the profile gauge 12 could be raised to transmit the profile on the disk pack 1.
  • Fig. 6 additionally shows a profile gauge 12 with a slightly larger radius.
  • the disk set 1 can be adjusted very quickly to different bending radii. It is advantageous that the sword 1 remain in the bending press 6 and the upper beam 1 in the folding machine 9 can and must not be expanded.
  • the bending lamellae 2 are thus adjustable during operation of the sheet metal bending machine 6, 9.
  • the profile gauge 12 has a wave profile. This is between sword 1 and die 8, which is also constructed in this example of a disk set in position, and the sword 1 and the die 8 then moved towards each other to the profile of the profile gauge 12 on the sword 1 and the die transferred to. In this way, the workpiece 7 can be provided, for example with a wave profile.
  • the Gesenkbiegemaschine 6 is thus even more universal.
  • the bending lamellae 2 can be the same thickness or different thicknesses and that a lamella packet 1 can have an even or odd number of bending lamellae 2. Furthermore, it can be seen that the bending blades 2 are not necessarily rounded in the form of area 3, even if this is advantageous in that then no or only small impressions of the bending tool 1 are formed in the workpiece 7.
  • Fig. 8 finally shows that the profile gauge 12 can be brought into contact with the sword 1 in an inverse molding area 13 opposite the molding area 3. In this case, the sword 1 is moved upwards and / or the profile gauge 12 down to transmit the profile of the profile gauge 12 to the sword 1.
  • the bending blades 2 have substantially identical outer dimensions, in particular the same height.
  • identical outside dimensions also offer advantages in the production of the bending tool 1, since the lamellae 2 can be produced particularly efficiently in this case.
  • the Biegellamellen 2 adjustable or permanently connected to each other for example, be welded or glued.
  • By joining rectangular plates of identical size bending tools 1 can be made particularly efficient with any bending profile.
  • the bending lamellae 2 can also be adjustable transversely to a generatrix 4 of the cylindrical bending profile.
  • Fig. 9 shows a variant of the bending tool 1, in which the blades 2 are screwed together by means of screws 14 and nuts, not shown. When adjusting the screws 14 are released, so that the Biegellamellen 2 against each other, or the screws 14 can be moved in the slots 15. For the bending process, the screws 14 are then tightened again.
  • a bending lamella 2 can be roughened at its contact surface to an adjacent bending lamella 2 and / or have a toothing, in particular a micro-toothing, and / or a groove structure or groove structure, as described in US Pat Fig. 9 is shown. It is easy to see that the Biegellamellen have 2 horizontally extending grooves to prevent slipping of the Biegellamellen 2 or at least complicate.
  • the Biegellamellen 2 touch each other directly. This is by no means absolutely necessary. It is also conceivable that between the Biegellamellen 2 intermediate plates are inserted, preferably made of a material with a high coefficient of friction, high shear modulus and high shear strength.
  • Fig. 10 further shows an example in which the sheet metal bending machine 6, 9 comprises a clamping device which presses the bending blades 2 against each other.
  • the sheet metal bending machine 6, 9 comprises a clamping device which presses the bending blades 2 against each other.
  • two hydraulic cylinders 16 are arranged on the bending tool 1, which press the Biegellamellen 2 via lever 17 against each other to prevent slippage thereof during the bending operation.
  • the in Fig. 10 shown variant purely illustrative, and there are still a number of jigs conceivable.
  • the hydraulic cylinders 16 are exchanged against spindle drives.
  • the lever 17 are arranged differently or even omitted, for example, when the hydraulic cylinders 16 are arranged horizontally and press directly on the disk set 1, as well as in the Fig. 11 variant shown is the case.
  • the bending tool in this case can be rigidly installed in a frame of a plate bending machine 6, 9 and accordingly the die 8 or the lower cheek 10 can be designed to be movable.
  • the bending lamellae 2 are additionally wedge-shaped, tapering away from the molding area 3. In this way, a displacement of the bending lamellae 2 with each other can also be prevented.
  • the embodiments show possible embodiments of a bending tool according to the invention 1 respectively a bending machine 6, 9, wherein it should be noted at this point that the invention is not limited to the specifically illustrated embodiments of the same / same, but also various combinations of the individual embodiments are possible with each other and this possibility of variation is due to the teaching of technical action by objective invention in the skill of those skilled in this technical field. So are all conceivable embodiments, which are possible by combinations of individual details of the illustrated and described embodiment variant, includes the scope of protection. For example, a screw connection after Fig. 9 even with wedge-shaped Biegellamellen 2, as in Fig. 3 are shown, be provided.
  • the variants shown for a punch 1 of a Gesenkbiegemaschine 6 are fully applicable for the die 8 and also for the upper beam 1 of a folding machine 9.
  • the holding portion 5 is not necessarily designed as in the Fig. 1 is shown, but may also have a shape adapted to the respective bending machine 6, 9 or omitted altogether, for example in the in Fig. 11 illustrated variant.
  • the illustrated devices may also comprise more or fewer components than shown and are sometimes shown in greatly simplified form in the figures.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP13160151.0A 2012-03-21 2013-03-20 Plieuse de tôle Withdrawn EP2641668A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT3472012A AT512191B1 (de) 2012-03-21 2012-03-21 Blechbiegemaschine

Publications (1)

Publication Number Publication Date
EP2641668A1 true EP2641668A1 (fr) 2013-09-25

Family

ID=47900934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13160151.0A Withdrawn EP2641668A1 (fr) 2012-03-21 2013-03-20 Plieuse de tôle

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EP (1) EP2641668A1 (fr)
AT (1) AT512191B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI643770B (zh) * 2018-07-31 2018-12-11 捷將科技有限公司 Automobile floor mat automatic folding device, automobile floor mat automatic folding component and automobile floor mat automatic folding method
CN113751593A (zh) * 2021-09-24 2021-12-07 安徽东海机床制造有限公司 一种折弯机非平行折弯的上下组合模

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1019073A (en) * 1909-08-04 1912-03-05 John Nazel Forming-machine.
DE670332C (de) * 1936-08-07 1939-01-17 Otto Nitzschke Richt- und Biegemaschine fuer profilierte Koerper mit Druckstueck und Widerlagern
US2372418A (en) * 1938-01-29 1945-03-27 Saint Gobain Apparatus for bending glass sheets
US2783815A (en) * 1952-12-11 1957-03-05 Virginia P Tegarden Forming machine
FR2484297A1 (fr) * 1980-06-13 1981-12-18 Durlumen Sarl Ets Outil d'emboutissage permettant d'obtenir notamment un profile de section droite parabolique
JPH07290149A (ja) * 1994-04-28 1995-11-07 Showa Alum Corp 曲げ加工用金型装置及び曲げ加工方法
WO2001064367A1 (fr) * 2000-02-29 2001-09-07 Northrop Grumman Corporation Systeme et procede pour former du metal en feuille au moyen d'un outil reconfigurable

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474657A (en) * 1966-04-26 1969-10-28 Raymond J Spiegel Laminated press brake die
JP4526696B2 (ja) * 2000-12-19 2010-08-18 本田技研工業株式会社 積層成形型
DE10142098A1 (de) * 2001-08-30 2003-03-20 Claas Saulgau Gmbh Formwerkzeug zur Formung von Werkstücken
GB2392861A (en) * 2002-09-16 2004-03-17 Truflo Air Movement Ltd Press Tool
DE20315726U1 (de) * 2003-10-14 2004-01-29 Ehp Blechbearbeitungsmaschinen Gmbh Lamelliertes Biegewerkzeug
EP1854563A1 (fr) * 2006-05-12 2007-11-14 Yamazaki Mazak Corporation Procédé de fabrication d'un outillage pour une presse plieuse et outillage obtenu par un tel procédé

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1019073A (en) * 1909-08-04 1912-03-05 John Nazel Forming-machine.
DE670332C (de) * 1936-08-07 1939-01-17 Otto Nitzschke Richt- und Biegemaschine fuer profilierte Koerper mit Druckstueck und Widerlagern
US2372418A (en) * 1938-01-29 1945-03-27 Saint Gobain Apparatus for bending glass sheets
US2783815A (en) * 1952-12-11 1957-03-05 Virginia P Tegarden Forming machine
FR2484297A1 (fr) * 1980-06-13 1981-12-18 Durlumen Sarl Ets Outil d'emboutissage permettant d'obtenir notamment un profile de section droite parabolique
JPH07290149A (ja) * 1994-04-28 1995-11-07 Showa Alum Corp 曲げ加工用金型装置及び曲げ加工方法
WO2001064367A1 (fr) * 2000-02-29 2001-09-07 Northrop Grumman Corporation Systeme et procede pour former du metal en feuille au moyen d'un outil reconfigurable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI643770B (zh) * 2018-07-31 2018-12-11 捷將科技有限公司 Automobile floor mat automatic folding device, automobile floor mat automatic folding component and automobile floor mat automatic folding method
CN113751593A (zh) * 2021-09-24 2021-12-07 安徽东海机床制造有限公司 一种折弯机非平行折弯的上下组合模

Also Published As

Publication number Publication date
AT512191B1 (de) 2013-06-15
AT512191A4 (de) 2013-06-15

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