EP3228396A1 - Outil de cintrage et installation de fabrication comprenant une cintreuse et un tel outil de cintrage - Google Patents

Outil de cintrage et installation de fabrication comprenant une cintreuse et un tel outil de cintrage Download PDF

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Publication number
EP3228396A1
EP3228396A1 EP17165253.0A EP17165253A EP3228396A1 EP 3228396 A1 EP3228396 A1 EP 3228396A1 EP 17165253 A EP17165253 A EP 17165253A EP 3228396 A1 EP3228396 A1 EP 3228396A1
Authority
EP
European Patent Office
Prior art keywords
bending
head part
bending tool
head
tool
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
Application number
EP17165253.0A
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German (de)
English (en)
Other versions
EP3228396B1 (fr
Inventor
Martin Jobst
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 EP3228396A1 publication Critical patent/EP3228396A1/fr
Application granted granted Critical
Publication of EP3228396B1 publication Critical patent/EP3228396B1/fr
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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
    • B21D37/08—Dies with different parts for several steps in a process
    • 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
    • B21D5/0254—Tool exchanging

Definitions

  • the invention relates to a bending tool, in particular a head-mounted bending punch and / or a head-mounted bending die and a production line with a bending press and a bending tool designed in this way.
  • a bending machine with a bending tool held thereon has become known from at least one bending punch and at least one bending die.
  • Each of the bending dies and each of the bending dies has a plate-shaped base body with flat sides arranged opposite one another and circumferentially arranged end faces.
  • the main body in turn has two oppositely arranged head parts for holding and securing to the bending machine.
  • a working section is also provided on the main body opposite one another.
  • each of the head parts also forms a working portion, whereby a multiple use of each such formed punch and bending die in mutually different insertion position is possible.
  • the bending punch and the bending die each have to be pivoted about an angle of 180 ° in the direction of the longitudinal extent of the bending punch and of the bending die.
  • the disadvantage here is that not in all positions of use a perfect and above all secure mounting of the punch or the bending die could be achieved on the bending machine.
  • one working section simultaneously forms the head part for the opposite working section.
  • bending tools in which a multiple use of the bending tool in different positions was possible are in the AT 271 141 B . AT 514 291 A1 . DE 354 146 A . FR 1 522 730 A or the US 4,866,975 A been described. In all of these, a part of the bending tool can be pivoted about a pivot axis extending in the direction of the longitudinal extension of the bending tool into the respective desired position.
  • Object of the present invention was to overcome the disadvantages of the prior art and to provide a bending tool and a production line with such a bending tool, by means of which a simple and secure attachment or support for a reusable bending tool in mutually different working positions allows becomes.
  • the bending tool according to the invention in particular a head-bearing bending punch and / or a head-mounted bending die, can be used for a bending press, in particular a press brake for the free-form bending of workpieces from a metal sheet.
  • the bending tool comprises a plate-shaped base body having a first and a second flat side and circumferentially arranged end faces, wherein the main body has a first head part and a first working portion and a second head part and a second working portion and the first head part and the first working portion and the second head part and the second working section are each arranged opposite one another on the end faces.
  • the first head part and the second head part are seen in the circumferential direction of the end faces of the base body arranged directly successive and at an angle to each other and define a corner of the body.
  • the advantage achieved thereby is that it can be used to create a bending tool that can be used in a number of application positions, which can be picked up and held in a tilt-proof manner on a bending machine. Due to the circumferentially immediately successive arrangement of the head parts to form a corner region of the base body, an unhindered design of the respective working sections can thus be made possible on each of the opposite end faces.
  • the tool change can be done simply by the fact that the bending tool or individual components thereof, in the YZ plane is adjusted or pivoted about the corner angle enclosed between the end faces or be and can be used in this bending position again in this new position or can.
  • the advantage can be achieved that at each of the individual circumferentially arranged end sides of the base body in each case on an end face only one element of the bending tool is formed.
  • either the two head parts are provided in each case one of the end sides and also only on one of the end sides of a corresponding working section.
  • it can also be used to create sufficient clearance around the bending tool, since no additional protruding shoulders or projections are present, especially in the case of head-mounted bending tools.
  • This can also be created a rich and especially large-scale support surface of the bending tool on its end face bounding the head part for support in the tool holder.
  • the end face of the first head part and the end face of the second head part form an angle of 90 ° between them.
  • a further embodiment provides that a first distance between the end face of the first head part and the end face of the first working section is designed to be the same length as a second distance between the end face of the second head part and the end face of the second working section.
  • Another embodiment is characterized in that the base body has a square plan view when viewed on one of its flat sides.
  • the base body has a square plan view when viewed on one of its flat sides.
  • Another embodiment is characterized in that a respective retaining groove is arranged on each of the head parts in the first and second flat sides and each of the retaining grooves is delimited in its depth by a groove base. This allows each of the bending tools in his Working position fixed with the bending machine, in particular its tool holder, are kept clamped.
  • Another possible embodiment has the features that the two retaining grooves of the first head part and the two retaining grooves of the second head part are each arranged opposite one another. Thus, a centric and two-sided attachment or clamping of the respective bending tool can be created on the tool holder.
  • a further preferred embodiment is characterized in that each of the two head parts between the two flat sides has a first thickness identical to one another and at least one of the working sections between the two flat sides has a second thickness which is smaller relative to the first thickness of the head parts.
  • the second thickness of at least one of the working sections corresponds at most to a distance between the respective groove base from the respectively oppositely arranged retaining grooves of one of the head parts.
  • a weakening of the respective working section can be avoided by an otherwise arranged therein retaining.
  • Another alternative embodiment is characterized in that at least one securing device is arranged in at least one of the head parts in the base body.
  • the invention also relates to a production plant comprising a bending press, in particular a press brake for the free-form bending of workpieces from a sheet metal, with a press beam, and at least one bending tool, which at least one bending tool the press bar is held.
  • a bending tool in particular its bending punch and / or its bending die, an inventively designed bending tool is used.
  • a manufacturing plant in which the tool storage can be formed with a smaller footprint. Due to the possible multiple orientation and positioning of the individual bending tools in the bending machine so that the number of individual bending tools can be reduced by a certain extent. Furthermore, but so that the times for the Umrüstvor réelle can be minimized because in a tool change not the respective bending tool removed from a tool storage spend in the area of the bending machine and to arrange there and remove the no longer used bending tool from the bending machine and in the Tool memory is due. It is sufficient only a release of the bending tool and then pivoting in the other working position. Thus, a faster setup process and thus the possible operating time of the manufacturing plant, in particular the bending machine can be increased.
  • a production plant 1 is shown in a highly schematically simplified representation, which is formed in the present case, in particular for the free-form bending of workpieces 2 to be produced from a sheet metal by means of swaging.
  • the manufacturing plant 1 used in the present case for bending, in particular sheet metal bending comprises a bending machine, in the present embodiment a bending press 3, in particular a press brake or press brake, for producing the workpieces 2 or workpieces between at least one bending tool 4 which is adjustable relative to one another
  • Bending tool 4 comprises in the present embodiment, at least one bending punch 5, but usually a plurality of bending punch 5, and at least one bending die 6, but usually several cooperating bending dies 6.
  • the at least one bending punch 5 is arranged above the workpiece to be manufactured 2 on the bending press 3 and There also held accordingly, in particular clamped.
  • at least one bending die 6 is held on the bending press 3, in particular clamped.
  • the one or more bending dies 5 can also be referred to as the upper tool and the bending die 6 or the lower dies.
  • the design of the bending tool 4 will be described in more detail below.
  • X direction that runs in a horizontal plane and in a vertical orientation with respect to the longitudinal extension of the bending tool 4, in particular its punch 5 and bending die 6.
  • this is the direction which also corresponds to the feeding direction of the sheet or the discharge direction of the sheet or the workpiece 2.
  • Y direction the vertical direction is understood, which thus extends in the height direction of the bending tool 4.
  • Z direction is understood to be that direction which extends in the longitudinal direction or in the longitudinal extent of the bending tool 4, in particular its bending punch 5 and bending die 6. As a result, the longitudinal extent of the bending edge defined by the bending tool 4 in the "Z” direction is also aligned.
  • the bending punch 5 and / or the bending die 6 is formed in its intended connection region as a "shoulder-bearing tool".
  • the bending punch 5 and / or the bending die 6 in its insert position on the bending press 3 at least one projecting in the "X" direction over the main body shoulder, with which a support of the tool to the bending press 3 in "Y" direction for the bending process is possible.
  • connection region of the tool in particular the bending punch 5 and / or the bending die 6, is referred to as a "head-carrying tool".
  • the connection area is formed without any projecting shoulder or shoulder in the "X" direction.
  • the tool is supported directly with its frontally extending and averted from the work area end face on the bending press 3 in "Y" direction for the implementation of the bending process.
  • a machine frame 7 or a machine body of the bending press 3 comprises, for example, a base plate 8, on which are arranged vertically upstanding, spaced apart in the transverse direction and side cheeks 9, 10 oriented parallel to one another.
  • the side cheeks 9, 10 are preferably connected to each other by a solid, formed for example of a sheet metal part cross member 11 at their distance from the bottom plate 8 end portions.
  • the side cheeks 9, 10 may be formed to form a free space for forming the workpiece 2 or charging about C - shaped, wherein attached to front end faces 12 of bottom legs of the side cheeks 9, 10 a fixed, in particular on the bottom plate 8 upstanding pressing beam 13 is.
  • This fixedly arranged and fixed pressing beam 13 can also be referred to as a press table, on which parts of the bending tool 4 are arranged and also held.
  • At front end faces 14 of the legs removed from the bottom plate 8 is in linear guides 15 to a table beam forming the pressing beam 13 relatively adjustable further pressing bar 16, in particular a pressure bar, guided guided.
  • On opposite, mutually parallel end faces 17, 18 of the two pressing bars 13, 16 can be arranged 19 tool holders 19, 20 for assembly with the bending tools or.
  • the one or more bending tools 4 can also be held with the interposition of an adapter not shown on the tool holders 19, 20.
  • the bending press 3 shown has as drive arrangement 21 for the adjustable pressing beam 16, namely the pressure beam, e.g. two powered by electric energy drive means 22, which are conductively connected to a fed from a power grid 23 control device 24.
  • the operation of the bending press 3, in particular the changing operation of the bending tool 4 can be controlled via an input terminal 25 communicatively connected to the control device 24.
  • the drive means 22 may be, for example, electromotive spindle drives 26, as are well known, of which adjusting means 27 for a reversible actuating movement of the upper beam formed by the pressure bar 16 with this, for example, are drive-connected. Regardless of this, it would also be possible to form the drive means 22 by means of hydraulically and / or pneumatically actuatable actuating means. It can find cylinder-piston arrangements application. But there would also be other drive means, such as eccentric drives, toggle drives, rack drives, etc. conceivable. For a plurality of drive means 22, attention must be paid to an exact same adjustment of the same, so as to prevent tilting of the upper press bar 16 on the linear guides 15 or to avoid a different bending angle over the bending length. Further details required for the operation of such a bending press 3, such as safety devices, supply devices and / or control devices, are omitted in the subject description to avoid unnecessary length of the description.
  • the manufacturing plant 1 may also include a manipulator not shown here, which at least a piece of it takes from a supply stack of sheets to be deformed or preciselykantenden and spends in the work area or the operating side of the bending press 3.
  • the manipulator can in turn comprise a gripping tongs, which in turn has gripping fingers.
  • the gripping fingers have clamping surfaces on the side facing the workpiece 2 to be produced.
  • the bending tool 4 may comprise at least one bending punch 5 and at least one cooperating bending die 6.
  • the following description refers to a possible embodiment of the bending punch 5, wherein it should be pointed out that the bending die 6 can also be designed analogously. Therefore, for the formation of the bending die 6 is dispensed with a detailed description and reference to the execution of the description of the formation of the bending punch 5 reference.
  • head-bearing trained bending tools 4 there are head-bearing trained bending tools 4 and shoulder bearing trained bending tools 4.
  • head-mounted bending tools 4 For reasons of space for the available space for performing the bending operations for a particular reusable bending tool 4 are preferably used head-mounted bending tools 4. It would also be possible to form shoulder-bearing trained bending tools 4 according to the following description.
  • the bending tool 4, in the presently illustrated embodiment of the bending punch 5, comprises a plate-shaped base body 28, which has a first flat side 29 and a second flat side 30 remote from it and remote from it.
  • the base body 28 is determined in its thickness or material thickness. It should be pointed out that the two flat sides 29, 30 can be arranged at a different distance from each other over the surface extension of the main body 28.
  • the plate-shaped basic body 28 may also have different material thicknesses or wall thicknesses in the direction of its thickness.
  • the plate-shaped base body 28 is circumferentially bounded by a plurality of end faces 31 to 34.
  • the end faces 31 to 34 thus limit the plate-shaped main body 28 in the region of its outer narrow sides.
  • the term "front side" for the peripheral boundary of the main body 28 in the region of its narrow sides was chosen because it does not necessarily have to be a planar boundary surface, but defines the end face the area of the outer boundary of the base body 28 in its peripheral region.
  • the two flat sides 29, 30 represent the larger surface area of the main body 28 and basically define the thickness thereof. Thickness differences between individual surface regions of the main body 28 between the two flat sides 29, 30 are also possible.
  • the main body 28 has a first head part 35 and a second head part 36.
  • the first head part 35 is arranged opposite a first working section 37 on the main body 28 or trained.
  • the second head part 36 is likewise associated with a second working section 38 opposite or arranged or formed on the main body 28.
  • the head parts 35, 36 and the working sections 37, 38 in the outer peripheral region of the main body 28 of the first head portion 35 and the first working portion 37 and the second head portion 36 and the second working portion 38 are each opposite each other at the end faces 31 bis 34 of the main body 28 is arranged or formed. Furthermore, it is still provided here that the first head part 35 and the second head part 36 seen in the circumferential direction of the end faces 31 to 34, are arranged directly following one another. Thus, the first head part 35 and the second head part 36 together define a corner of the base body 28. Furthermore, it may be advantageous if the end face 31 of the first head part 35 is parallel with respect to the opposite end face 32 of the first working section 37. The same also applies to the end face 33 of the second head part 36 and the end face 34 of the second working section 38.
  • the end face has been assigned to the first head part 35 by the reference numeral 31, the further end side by the reference numeral 32 to the first working section 37, the further end face 33 to the second head part 36 and finally the end face by the reference numeral 34 to the second working section 38.
  • the end face 31 of the first head part 35 and the end face 33 of the second head part 36 of the base body 28 are arranged at an angle to each other.
  • the two end faces 31, 33 of the two head parts 35, 36 preferably enclose an angle of 90 ° between them.
  • a viewing direction here is a view in the vertical direction on a plane arranged in one of the flat sides 29, 30 is selected.
  • the head part 35, 36 of the bending tool 4 is understood to be that edge section of the main body 28 which is arranged or formed to extend along the respective end faces 31, 33.
  • Each of the head parts 35, 36 serves to form the fastening section of the bending tool 4, in particular the bending punch 5 and / or the bending die 6, on the bending press 3.
  • a holding groove 39 to 42 is arranged or formed on each of the head parts 35, 36 in the first and second flat sides 29, 30 is.
  • the two first retaining grooves 39, 40 are assigned to the first head part 35 and the further retaining grooves 41, 42 are assigned to the second head part 36 or respectively arranged or formed in the main body 28 in the region of the first head part 35 and the second head part 36.
  • Each of the retaining grooves 39 to 42 is limited in its depth by its own groove base.
  • groove cross-section can, as best of the Fig. 4 and 5 can be seen, a V-shaped cross-section can be selected. But it would also be other groove sections, such as polygonal as square, rectangular or part of a hexagon or octagon, possible.
  • the two retaining grooves 39, 40 of the first head part 35 are each formed recessed extending from the first and second flat sides 29, 30 in the base body 28, and arranged in their longitudinal extent parallel to each other and opposite each other. The same also applies to the other two retaining grooves 41, 42 in the region of the second head part 36.
  • the end face 31 of the first head part 35 and the end face 33 of the second head part 36 are formed in this embodiment, the base body 28 as planar support surfaces.
  • these support surfaces forming the end faces 31, 33 form those regions of the main body 28, with which the corresponding supports in the Y direction on one of the pressing beams 13, 16 or the tool holders arranged on the pressing beams 13, 16 are mounted on the head-carrying bending tools 4 19, 20 takes place.
  • the two end faces 31, 33 in particular the support surfaces formed by these, at right angles (90 °) with respect to the two flat sides 29, 30 aligned therebetween.
  • first retaining grooves 39, 40 and the two further retaining grooves 41, 42 described above, these likewise have a parallel longitudinal course with respect to the respective end face 31, 33 or through the latter formed supporting surfaces. Furthermore, the first two retaining grooves 39, 40 and the two other retaining grooves 41, 42 are arranged at a predetermined distance starting from the respective end face 31, 32 in the direction of the respectively oppositely arranged working section 37, 38 extending.
  • a first distance 43 between the end face 31 of the first head part 35 and the end face 32 of the first working section 37 is of equal length, such as a second distance 44 between the end face 33 of the second head part 36 and the end face 34 of the second working portion 38.
  • the end face 31 of the first head part 35 and the end face 32 of the first working portion 37 aligned parallel to each other. The same also applies to the end face 33 of the second head part 36 and the end face 34 of the second working section 38.
  • the end face 31 of the first head part 35 and the end face 33 of the second head part 36 can enclose a right angle between them. Furthermore, if the first distance 43 and the second distance 44 have the same length in their longitudinal extent, the base body 28 has a square plan view when viewed on one of its flat sides 29 or 30. In this way, exactly the same tool height in "Y" direction can be achieved in both use positions of the bending tool 4.
  • the two head parts 35, 36 of the same bending tool 4, in particular bending punch 5, can be arranged and held in two mutually different working positions in the bending press 3, in particular their tool receivers 19, 20.
  • each of the two head parts 35, 36 between the two flat sides 29, 30 has a first thickness 45 which is identical to one another.
  • the two working sections 37 and / or 38 likewise have a second thickness 46 in the same direction between the two flat sides 29, 30.
  • the second thickness 46 is made smaller in extent than the first thickness 45 of the head portions 35, 36. This is best shown in FIGS FIGS. 5 and 6 to see.
  • the respectively associated first retaining grooves 39, 40 and second retaining grooves 41, 42 in the region of the two head parts 35, 36 each extend from the flat sides 29, 30 into the base body 28.
  • the second thickness 46 corresponds to at least one of the working sections 37 and / or 38 to the maximum value of the distance 47 between the respective groove bottoms.
  • At least one securing device 48 is arranged or provided on at least one of the head parts 35 and / or 36 in the main body 28.
  • a plurality of the securing devices 48 can also be provided per head part 35, 36.
  • the individual securing devices 48 serve, after releasing the clamping of the bending tool 4 in the region of the head part 35 or 36, to prevent unintentional falling down of the bending tool 4, in particular of the bending punch 5.
  • the design of the securing device 48 can be chosen freely and is known in various embodiments from the prior art. In this connection, as a possible embodiment, one's own and patented training according to the AT 515 526 B1 referred or referred.
  • the base body 28 is formed with respect to a centrally between the two flat sides 29, 30 extending center plane symmetrical or mirror image.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP17165253.0A 2016-04-07 2017-04-06 Outil de cintrage et installation de fabrication comprenant une cintreuse et un tel outil de cintrage Active EP3228396B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50284/2016A AT518273B1 (de) 2016-04-07 2016-04-07 Biegewerkzeug sowie Fertigungsanlage mit einer Biegepresse und einem derartigen Biegewerkzeug

Publications (2)

Publication Number Publication Date
EP3228396A1 true EP3228396A1 (fr) 2017-10-11
EP3228396B1 EP3228396B1 (fr) 2018-12-12

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Application Number Title Priority Date Filing Date
EP17165253.0A Active EP3228396B1 (fr) 2016-04-07 2017-04-06 Outil de cintrage et installation de fabrication comprenant une cintreuse et un tel outil de cintrage

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EP (1) EP3228396B1 (fr)
AT (1) AT518273B1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62254923A (ja) * 1986-04-30 1987-11-06 Amada Co Ltd 金型交換装置を備えた折曲げ機
DE3914762A1 (de) * 1989-05-05 1990-11-08 Masch Griebel Gmbh Kombimaschine mit wenigstens zwei werkzeugen
WO2006067282A1 (fr) * 2004-12-20 2006-06-29 Janne Leinonen Procede de cintrage de toles et machine a cintrer les toles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT514291A1 (de) * 2013-07-02 2014-11-15 Trumpf Maschinen Austria Gmbh Biegewerkzeug

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62254923A (ja) * 1986-04-30 1987-11-06 Amada Co Ltd 金型交換装置を備えた折曲げ機
DE3914762A1 (de) * 1989-05-05 1990-11-08 Masch Griebel Gmbh Kombimaschine mit wenigstens zwei werkzeugen
WO2006067282A1 (fr) * 2004-12-20 2006-06-29 Janne Leinonen Procede de cintrage de toles et machine a cintrer les toles

Also Published As

Publication number Publication date
AT518273B1 (de) 2017-09-15
EP3228396B1 (fr) 2018-12-12
AT518273A4 (de) 2017-09-15

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