EP3144076B1 - Outil pour une poinçonneuse pour transformer des sections d'une piece usinee en forme de plaque et procede associe - Google Patents

Outil pour une poinçonneuse pour transformer des sections d'une piece usinee en forme de plaque et procede associe Download PDF

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Publication number
EP3144076B1
EP3144076B1 EP16189239.3A EP16189239A EP3144076B1 EP 3144076 B1 EP3144076 B1 EP 3144076B1 EP 16189239 A EP16189239 A EP 16189239A EP 3144076 B1 EP3144076 B1 EP 3144076B1
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EP
European Patent Office
Prior art keywords
bending
segments
workpiece
segment
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.)
Active
Application number
EP16189239.3A
Other languages
German (de)
English (en)
Other versions
EP3144076A1 (fr
Inventor
Martin Walz
Markus Hees
Yakup Coskun
Thomas Burzig
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 Werkzeugmaschinen SE and Co KG
Original Assignee
Trumpf Werkzeugmaschinen SE 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.)
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Publication of EP3144076A1 publication Critical patent/EP3144076A1/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
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • 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
    • B21D37/10—Die sets; Pillar guides
    • 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
    • B21D11/20—Bending sheet metal, not otherwise provided for
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/08—Stamping using rigid devices or tools with die parts on rotating carriers
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • 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
    • B21D37/04—Movable or exchangeable mountings for tools
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/042—With a rotational movement of the bending blade
    • 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
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers

Definitions

  • the document DE 200 18 936 U1 discloses a machine for sheet metal working with a turning tool.
  • the tool can be used to produce a single deformation of a section, in particular a tab, in a plate-shaped workpiece.
  • the deformed section has a width that corresponds at most to a length of a bending punch and a bending roller. If narrower deformations are to be created, the workpiece must be punched out so far that the entire length of the punch and the bending roller lie within the punched-out area. It is therefore not possible to reshape tabs lying closely next to one another. For such a forming, it is necessary to provide special tools specific to the task.
  • document DE 102 23 637 A1 discloses a bending tool having a swivel bending punch and an ejector. At the end of a bending process of a right angle of a workpiece, a recess in a bearing pin of the swivel bending punch provided in the lower tool is pressed by the ejector and the swivel bending punch is thereby pivoted, as a result of which the workpiece is bent over and then springs back into the right angle.
  • the invention is based on the object of providing a forming tool for a punching machine which does not have the disadvantages mentioned above and which enables forming with different widths to be carried out with little effort.
  • the invention is also based on the object of preventing the workpiece from striking the stationary bending roller.
  • the bending punch and the bending roller by constructing the bending punch and the bending roller with segments, it is possible, starting from a maximum design-related length, to reduce an effective length of a bending roller in order to avoid unnecessarily large punched-out areas for creating a tab.
  • FIG. 1 One embodiment of a sheet metal working machine, namely a punching machine 1, is shown.
  • An essential component of the punching machine 1 is a C-frame 2.
  • the C-frame 2 consists of a torsionally rigid welded structure made of steel.
  • a hydraulic unit 3 is provided, with which a tappet 4 is driven hydraulically via a tappet drive, not shown.
  • a lower tool holder 5 On the lower inside of the C-frame 2, a lower tool holder 5 is provided for receiving a lower tool part of a punching or forming tool 12.
  • the lower tool holder 5 can be rotated through 360 ° via a rotary drive, not shown, and can be locked in any angular position.
  • the tappet 4 is provided on the upper inside of the C-frame 2.
  • the plunger 4 with an upper tool holder 6 receives a tool upper part of the punching or forming tool 12 in a form-fitting manner and without play.
  • the plunger 4 can also be rotated through 360 ° and can be locked in any angular position. A second rotary drive, not shown, is available for this.
  • a machine table 7 On the lower inside of the C-frame 2 there is also a machine table 7, which has a cross rail 8 with a linear magazine for the punching or forming tools 12. Clamping claws 9 for holding a plate-shaped workpiece 10, here a sheet metal plate, are arranged on the cross rail 8. Several, here three, tool holders 11 for several, here two, tools 12 are present in the linear magazine.
  • the machine table 7 moves in a Y direction together with the cross rail 8, on which the clamping claws 9 are fastened, with which the plate-shaped workpiece 10 is held, into a programmed position.
  • the cross rail 8 moves into the programmed position, the plate-shaped workpiece 10 sliding over the machine table 7.
  • a plunger 4 then carries out a working stroke in which the plate-shaped workpiece 10 is punched or shaped in accordance with the tool accommodated in the tool holders 5, 6. Then the next punching position is approached according to the same principle.
  • the punching or forming tools 12 are automatically changed, controlled by a machine control device, not shown.
  • the cross rail 8, driven by a linear drive, not shown moves into a position in an X direction, so that the X position of the tool 12 to be changed corresponds to the X position of the lower tool holder 5.
  • the cross rail 8 then moves together with the machine table 7, driven by a further linear drive, into a position in the Y direction in which an axis of the tool 12 with a central axis of the lower tool holder 5 and the plunger 4 coincides, so that the punch 12 can be accommodated in the lower tool holder 5 and in the upper tool holder 6.
  • Fig. 2 shows an isometric view of a tool upper part 21 of a tool according to the invention.
  • the upper tool part 21 has a punch shaft 22 as a device for receiving in the upper tool holder 6 of the punching machine 1.
  • the upper tool part 21 also has a first adapter flange 23, via which the upper tool part can be received in one of the tool holders 11 of the tool magazine.
  • the upper tool part 21 has a bending punch 24.
  • the bending punch 24 is divided into a plurality of first bending segments 25 in this embodiment.
  • the bending die 24 also has a bending edge, which is formed by aligned bending edges 34 on the bending segments 25.
  • First spacer segments 26 are provided between some of the first bending segments 25.
  • One spacer segment 26 or a plurality of first spacer segments 26 can be provided in each case.
  • the first bending segments 25 and the spacer segments 26 are fastened to the upper tool part 21 via a clamping strip 27.
  • the first bending segments 25 and the first spacing segments 26 can alternatively also be fastened to the tool upper part 21 in a different way, for example by screwing on or by means of a dovetail connection.
  • segmentation of the bending die 24 is not absolutely necessary. Unless there are any elevations on the top of the plate-shaped workpiece 10 At the points where there are no sections to be formed, the bending die 24 can also be provided with the bending edge 34 throughout.
  • FIG. 3 an isometric view of an embodiment of a lower tool part 28 of the tool according to the invention is shown.
  • the lower tool part 28 has a second adapter flange 29, by means of which the lower tool part 28 can be received in the lower tool holder 5 and also optionally together with the upper tool part 21 in one of the tool holders 11 of the tool magazine of the punching machine 1.
  • the lower tool part 28 also has a bending roller 30.
  • the bending roller has a shaft to be described later, on which second bending segments 31 ', 31 ", namely bending segments of the bending roller 30 are applied. Between some of the second bending segments 31', 31", second spacing segments 32 ', 32 "are provided. Several can be provided second spacing segments 32 ′, 32 ′′ may be provided between the second bending segments 31 ′, 31 ′′. Side guides 50 described later are provided at both ends of the bending roller 30.
  • the first bending segments 25 of the upper tool part 21 and the second bending segments 31 ′, 31 ′′ of the lower tool part 28 cooperate in order, as described later, to reform sections of the plate-shaped workpiece 10, in this case to bend them as tabs.
  • the first and second bending segments 25, 31 ', 31 are arranged at positions in the bending die 24 and the bending roller 30, so that the tabs in the desired number, Size and can be made in the desired intervals.
  • the required position of the upper tool part 21 and of the lower tool part 28 for forming the deformations in the desired positions of the plate-shaped workpiece 10 is determined by the programmed position of the plate-shaped workpiece 10.
  • the second bending segments 31 ', 31 "and the second spacing segments 32', 32" in the lower tool part 28 are rotatable about an axis of rotation 33.
  • the axis of rotation 33 runs in a direction of the bending edge 34 of the bending die 24.
  • the lower tool part 28 is also optionally provided with a first ejector 35 and a second ejector 36.
  • the ejectors 35, 36 are spring-loaded in one direction of the working stroke of the tappet 4.
  • the second ejector 36 is opposite the first ejector 35 with respect to the bending roller 30.
  • the bending die 24 is here in the upper tool part 21 and the bending roller 30 is contained in the lower tool part 28.
  • the bending roller is in the upper tool part and the bending punch 24 is provided in the lower tool part.
  • FIG. 4a A schematic side view of the first bending segment 25 of the bending die 24 and of a first embodiment of the second bending segment 31 'of the bending roller 30 are shown.
  • Fig. 4a is a situation before a forming process and in Fig. 4b shown a situation during the forming process.
  • the first bending segment 25 has an almost entire surface facing the plate-shaped workpiece 10 as a support surface 37. Excluded areas of the facing surface are only a radius of the bending edge 34 and any radii or chamfers on the edges of the surface.
  • the second bending segment 31 ′ has an essentially circular cross section here with a specific diameter around a central axis, which corresponds to the axis of rotation 33.
  • the second bending segment 31 ' is provided with a recess 38 with a sector-shaped cross section, here a sector of 90 °.
  • the second bending segment 31 ' is also provided with an opening 45 into which a shaft described later can be inserted.
  • One leg of the sector-shaped recess 38 is a bending leg 39 with which the section of the plate-shaped workpiece 10 is formed.
  • a second leg 44 of the sector-shaped recess 38 acts here as an actuating leg, which acts as an actuating section 40 with a transition region to the circular cross section, here a radius.
  • the sector-shaped recesses 38 of the second bending segments 31 ', 31 "have identical angles in order to form the sections of the plate-shaped workpiece 10 into the same shape.
  • the sector-shaped recesses 38 of the second bending segments 31', 31" can have different angles , so that, for example, tabs can be bent out of the workpiece 10 at different angles have the workpiece 10.
  • the radius of the sector-shaped recess 38 near the axis of rotation 33 is selected as a function of the desired bending radius.
  • FIGS. 5a to 5c show schematic side views of different embodiments of the first spacer segments 26 of the bending die 24.
  • the first spacing segment 26 ′ has an almost entire surface facing the workpiece 10 during the shaping process as a contact surface 41 on the workpiece 10.
  • the first spacing segment 26 ' differs from the first bending segment 25 in that the first spacing segment 26' has a shape without a bending edge 34.
  • Fig. 5b shows the first spacing segment 26 ", which, in contrast to the first spacing segment 26 ', does not have a bearing surface, but instead has a beveled lower surface 43. Therefore, the surface 43 of the first spacing segment 26" facing the plate-shaped workpiece 10 has a distance from the workpiece during the forming process 10th
  • the spacing segment 26 '" is shown, which has a cutout 42 on the surface facing the workpiece 10. Due to the cutout 42, the spacing segment 26'" has a contact surface 41 in a section of the surface 43 facing the workpiece 10, whereas another section of the surface facing the workpiece 10 is at a distance from the plate-shaped workpiece 10 by the cutout 42 during the shaping process.
  • the spacing segment 26 "' is immediately adjacent the first bending segments 25 are used when upward deformations are present in non-deformed areas near the deformed sections.
  • Fig. 6 shows a side view of an embodiment of a second spacing segment 32 ', namely a spacing segment of the bending roller 30.
  • the second spacing segment 32' is ring-shaped and has an outer diameter d a , which has a maximum dimension, so that a plane through the second spacing segment 32 ' , in which the second leg 44 lies and which is parallel to the axis of rotation 33 is not cut.
  • An inner diameter di of the second spacing segment 32 is adapted to the diameter of the shaft of the bending roller 30 described later.
  • the punching machine 1 first moves to a position of the plate-shaped workpiece 10 which is suitable for introducing the deformations to be introduced at desired positions.
  • the workpiece 10 is in the appropriate position, as shown in FIGS Figures 4a and 4b shown, the working stroke of the plunger 4 performed by the punching machine 1.
  • the bending roller 30 is in a rest position, that is to say in an orientation in which the sector-shaped recess 38 is directed in a direction towards the bending die 24.
  • a bisector of the sector-shaped recess 38 is advantageously perpendicular to the underside of the plate-shaped workpiece 10.
  • the first bending segment 25 of the punch 24 moves relative to the second bending segment 31 'of the bending roller 30.
  • the plate-shaped workpiece 10 is pressed through the support surface 37 and the bending edge 34 of the first bending segment 25 onto the actuating section 40 of the second bending segment 31 ′ of the bending roller 30, so that the actuating section 40 is acted upon.
  • the second bending segment 31 'and thus the bending roller 30 is deflected from the rest position about the axis of rotation 33.
  • the workpiece 10 is pressed into the recess 38 and a section corresponding to a width of the second bending segment 31 'is bent.
  • the section is “bent over”, ie the first bending segment 25 is moved towards the second bending segment 31 ′ to such an extent that the deformed section deforms slightly more than to a right angle then, when the first bending segment 25 and the second bending segment 31 'move apart, an elastic spring back of the material creates a right angle.
  • the number, the distance and the dimensions of the formed sections depend on the number, the arrangement and the width of the second bending segments 31 '.
  • next position of the plate-shaped workpiece 10 is approached, which is suitable for introducing the next deformations to be introduced at desired positions.
  • FIG. 4 is a side sectional view of the tool base 28 of FIG Fig. 3 shown.
  • a second embodiment of the second bending segments 31 ′′ is provided in the lower tool part 28.
  • the second bending segment 31 "also points like that in FIG Fig. 4a and 4b shown second bending segment 31 'the sector-shaped cutout 38 and the opening 45 for introducing the shaft described later.
  • the second sector has a second predetermined diameter which is larger than the first predetermined diameter in the first sector
  • the tool base 28 has a recess in a range of motion of the second sector when the second bending segment 31 'is rotated, and thus the bending roller 30, which is complementary to the second sector, so that the second sector can move in the recess and stick to it supports, so that the shaft in the opening 45 is supported.
  • the first ejector 35 is arranged relative to the second bending segment 31 "such that the actuation section 40 of the second bending segment 31" lies below a section of the first ejector 35, so that the first ejector 35 engages with the actuation section 40 of the second bending segment 31 " is.
  • the first ejector 35 also has a run-up slope on its side facing away from the bending roller 30, so that the workpiece 10 can easily drive onto the lower tool part 28.
  • the actuating section 40 of the second bending segment 31 "of the bending roller 30 is not actuated directly via the workpiece 10, as in the case of the bending segment 31 'of the first embodiment, but the actuating section 40 of the bending segment 31" is actuated via the relative movement of the bending punch 24 to the bending roller 30 via the workpiece 10 and the first ejector 35.
  • the bending roller 30 is already moved out of its rest position before the plate-shaped workpiece 10 strikes the second bending segments 31 ", so that the workpiece is prevented from striking the stationary bending roller 30 and damage to the sheet metal by the bending segments 31" is reduced or prevented ,
  • the second ejector 36 like the first ejector 35, has a run-up slope on its side facing away from the bending roller 30 on the upper edge, so that the plate-shaped workpiece can also easily approach the lower tool part 28 from this side.
  • the second ejector 36 is coupled to the first ejector 35, so that the second ejector 36 moves simultaneously with the first ejector 35.
  • the second ejector 36 would only be pressed down by the plate-shaped workpiece 10 during the working stroke of the punching machine 1.
  • the plate-shaped workpiece 10 is deformed unintentionally.
  • the coupling and the simultaneous movement there is also the possibility of free-punched areas in order to make sections to be deformed smaller.
  • a perspective view of a shaft 45 is shown.
  • the shaft 45 has a length that is slightly greater than the length of the bending roller 30.
  • the shaft 46 has a circular cross section with a first flat 47 and a second flat 48. The size of the two flat is different.
  • the shaft 46 fits positively into the opening 45 in the second bending segments 31 'and 31 ".
  • the second, smaller flat 48 is an auxiliary surface. It serves as coding so that the second bending segments 31 ', 31 "cannot be mounted on the shaft 46 in an incorrect orientation.
  • the shaft 46 does not necessarily have to have a circular cross section with flats, but can alternatively also have a different cross section as long as it is not symmetrical to an axis that is perpendicular to an axis 49 of the shaft 46.
  • Fig. 9 is again a sectional side view of the lower tool part 28 of FIG Fig. 3 shown.
  • the section is made such that a second embodiment of one of the spacer segments 32 ′′ is shown.
  • the second spacing segment 32 here also has a sector that has one Radius that is opposite the radius of the in Fig. 6 shown second distance segment 32 'is larger.
  • the actuation section 40 is also formed here, which is in engagement with the first ejector 35.
  • the lower tool part 28 points in a movement area of the sector with the larger radius when the second spacing segment 32 ′ and thus the bending roller 30 are rotated a recess that is complementary to this sector, so that the sector can move in the recess and is supported on it.
  • the shaft 46 is supported via the second spacing segment 32 ′′.
  • the second spacing segment 32 ′′ has a maximum outer dimension in an angular range of the sector-shaped recess 38 of one of the adjacent second bending segments 31 ′, 31 ′′, so that through the second spacing segment 32 ′′ the plane in which the second leg 44 of the sector-shaped recess 38 of the adjacent second bending segments 31 ', 31 "and which is parallel to the axis of rotation 33 is not cut. This penetrates the second spacing segment 32 "in the in Fig. 4b shown position of the second bending segment 31 ', in which the second leg 44 rests on an underside of the workpiece 10, does not and does not deform the plate-shaped workpiece 10.
  • the second spacing segment 32 ′′ likewise has the opening 45, into which the shaft 46 is received in a form-fitting manner.
  • a torque can be transmitted to the second bending segments 31 ′, 31 ′′ via the actuation section 40 of the second spacing element 32 ′′ via the shaft 46 without the spacing segment 32 "itself performing a bending process.
  • a restoring element 49 is also shown, with which the bending roller 30 is urged into its rest position.
  • the restoring element 49 engages on an engagement surface of the second spacing segment 32 ′′, so that a defined orientation of the bending roller 30 is ensured in the rest position when the actuating sections 40 are not acted on. This ensures a collision of the bending roller 30 with the plate-shaped workpiece is prevented when the lower tool part 28 is passed over.
  • Fig. 10 shows an isometric representation of the already in Fig. 3
  • the side guide 50 has, in a surface facing the shaft 46, a circular segment-shaped groove 51, in each of which an end section of the shaft 46 engages.
  • the lateral guide 50 is arranged on both sides adjacent to the shaft 46 in the lower tool part 28 such that the center point of the groove 51 in the form of a segment of a circle lies on the axis of rotation 33. A roll movement of the shaft 46 is guided by the side guides 50 and an undesired escape of the bending roller 30 from the lower tool part 28 is prevented.
  • the width of the first bending segments 25 can be different.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (13)

  1. Outil pour une poinçonneuse (1) pour le façonnage d'au moins une section d'une pièce usinée (10) en forme de plaque, avec une première partie d'outil (21) et une deuxième partie d'outil (28), dans lequel
    la première partie d'outil (21) présente un premier dispositif (22) à loger dans un premier logement d'outil (6) de la poinçonneuse (1) et un poinçon de pliage (24) composé d'au moins un premier segment de pliage (25) avec un bord de pliage (34), et
    la deuxième partie d'outil (28) présente un deuxième dispositif (29) à loger dans un deuxième logement d'outil (5) de la poinçonneuse (1) et un rouleau de pliage (30), coopérant avec le poinçon de pliage (24), qui peut être amené en rotation autour d'un axe de rotation (33) s'étendant en direction du bord de pliage (34), dans lequel
    le rouleau de pliage (30) présente le long de l'axe de rotation (33) un évidement (38) en forme de secteur avec une branche de pliage (39) et une deuxième branche (44), et
    le rouleau de pliage (30) présente une section d'actionnement (40), qui, lors d'un mouvement relatif du poinçon de pliage (24) et du rouleau de pliage (30), peut être sollicitée sous forme d'une course de travail de la poinçonneuse (1), de sorte que le rouleau de pliage (30) peut être dévié en rotation à partir d'une position de repos pendant un processus de façonnage lors d'une déformation par flexion de la pièce usinée (10) par la coopération du poinçon de pliage (24) et du rouleau de pliage (30),
    dans lequel
    la deuxième partie d'outil (28) présente un premier éjecteur (35) monté de manière élastique en direction de la course de travail,
    caractérisé en ce que
    le rouleau de pliage (30) présente en direction de l'axe de rotation (33) plusieurs deuxièmes segments de pliage (31', 31"),
    la section d'actionnement (40) d'au moins un des deuxièmes segments de pliage (31") est en prise avec le premier éjecteur (35), de sorte que le rouleau de pliage (30) peut être dévié en rotation au moyen d'une sollicitation du premier éjecteur (35) par la course de travail de la poinçonneuse (1),
    le rouleau de pliage (30) présente une position de repos dans laquelle il est orienté de sorte que l'évidement (38) en forme de secteur est dirigé dans une direction vers le poinçon de pliage (28),
    et le rouleau de pliage (30) est conçu de sorte qu'il se déplace déjà à partir de sa position de repos par l'intermédiaire de la sollicitation avant que la pièce usinée (10) en forme de plaque ne rencontre les deuxièmes segments de pliage (31").
  2. Outil selon la revendication 1, dans lequel une zone angulaire de l'évidement (38) en forme de secteur d'au moins deux des segments de pliage (31', 31") individuels est différente.
  3. Outil selon la revendication 1 ou 2, dans lequel le poinçon de pliage (24) présente plusieurs premiers segments de pliage (25), et une surface quasi-totale, tournée vers la pièce usinée (10), d'au moins un des premiers segments de pliage (25) pendant le processus de façonnage est une surface d'appui (37) sur la pièce usinée (10).
  4. Outil selon l'une quelconque des revendications 1 à 3, dans lequel le poinçon de pliage (24) présente au moins un premier segment d'espacement (26).
  5. Outil selon la revendication 4, dans lequel une surface quasi-totale, tournée vers la pièce usinée (10), d'au moins un des premiers segments d'espacement (26'), est, pendant le processus de façonnage, une surface d'appui (41) sur la pièce usinée (10).
  6. Outil selon l'une quelconque des revendications 4 ou 5, dans lequel une surface, tournée vers la pièce usinée (10), d'au moins un des premiers segments d'espacement (26") présente pendant le processus de façonnage un espacement par rapport à la pièce usinée (10).
  7. Outil selon l'une quelconque des revendications 4 à 6, dans lequel au moins un des premiers segments d'espacement (26''') présente un évidement libre (42), de sorte qu'une partie de la surface, tournée vers la pièce usinée (10), d'au moins un des premiers segments d'espacement (26''') est, pendant le processus de façonnage, une surface d'appui sur la pièce usinée (10).
  8. Outil selon l'une quelconque des revendications précédentes, dans lequel
    au moins un deuxième segment d'espacement (32") est prévu entre deux deuxièmes segments de pliage (31', 31") du rouleau de pliage (30), dans lequel le deuxième segment d'espacement (32") présente dans une zone angulaire de l'évidement (38) en forme de secteur une dimension extérieure maximale perpendiculairement à l'axe de rotation (33), de sorte que le deuxième segment d'espacement (32") ne coupe pas un plan qui est parallèle à l'axe de rotation (33) et dans lequel la deuxième branche (44) se situe, et
    dans lequel le rouleau de pliage (30) présente un arbre (46) avec une section transversale prédéfinie, et
    les deuxièmes segments de pliage (31', 31") et les deuxièmes segments d'espacement (32") présentent une ouverture (45) qui est complémentaire de la section transversale prédéfinie de l'arbre (46).
  9. Outil selon l'une quelconque des revendications 1 à 7, dans lequel
    au moins un deuxième segment d'espacement (32') est prévu entre deux deuxièmes segments de pliage (31', 31") du rouleau de pliage (30), dans lequel le deuxième segment d'espacement (32') présente dans une zone angulaire de l'évidement (38) en forme de secteur une dimension extérieure maximale perpendiculairement à l'axe de rotation (33), de sorte que le deuxième segment d'espacement (32') ne coupe pas un plan qui est parallèle à l'axe de rotation (33) et dans lequel la deuxième branche (44) se situe, et
    dans lequel le rouleau de pliage (30) présente un arbre (46) avec une section transversale prédéfinie, et
    dans lequel au moins un des deuxièmes segments d'espacement (32') est annulaire avec un diamètre intérieur (di), qui est adapté au diamètre de l'arbre (46).
  10. Outil selon la revendication 8 ou 9, dans lequel la deuxième partie d'outil (28) présente respectivement de part et d'autre de manière adjacente à l'arbre (46) un guidage latéral (50), qui présente une rainure en forme de segment de cercle (51) dans une surface tournée vers l'arbre, dans lequel un mouvement de roulement de l'arbre (46) est guidé.
  11. Outil selon l'une quelconque des revendications 8 à 10, dans lequel la deuxième partie d'outil (28) présente un premier éjecteur (35) monté de manière élastique en direction de la course de travail et une section d'actionnement (40) d'au moins un des deuxièmes segments d'espacement (32") est en prise avec le premier éjecteur (35), de sorte que le rouleau de pliage (30) peut être dévié en rotation par la course de travail de la poinçonneuse (1) au moyen d'une sollicitation du premier éjecteur (35).
  12. Outil selon l'une quelconque des revendications précédentes, dans lequel la deuxième partie d'outil (28) présente un deuxième éjecteur (36) opposé au premier éjecteur (35) par rapport au rouleau de pliage (30), dans lequel un accouplement entre le premier éjecteur (35) et le deuxième éjecteur (36) est prévu, de sorte que le deuxième éjecteur (36) peut être déplacé simultanément avec le premier éjecteur (35).
  13. Procédé d'obtention d'un façonnage de sections d'une pièce usinée (10) en forme de plaque avec un outil selon l'une quelconque des revendications 1 à 12, avec l'étape
    - de réalisation d'une course de travail par une poinçonneuse (1),
    dans lequel la section d'actionnement (40) des deuxièmes segments de pliage (31', 31") est sollicitée par le mouvement relatif du poinçon de pliage (24) par rapport au rouleau de pliage (30), de sorte que les plusieurs deuxièmes segments de pliage (31', 31") du rouleau de pliage (30) sont déviés à partir d'une position de repos, de sorte que la branche de pliage (39) du deuxième segment de pliage (31', 31") respectif, en relation avec le poinçon de pliage (24), déforme par pliage la section de la pièce usinée (10),
    dans lequel la section d'actionnement (40) du deuxième segment de pliage (31") ou du deuxième segment d'espacement (32") est sollicitée par le mouvement relatif du poinçon de pliage (24) par rapport au rouleau de pliage (30) au moyen de la pièce usinée (10) et du premier éjecteur (35), de sorte que le rouleau de pliage (30) se déplace déjà à partir de sa position de repos, avant que la pièce usinée (10) en forme de plaque ne rencontre les deuxièmes segments de pliage (31").
EP16189239.3A 2015-09-17 2016-09-16 Outil pour une poinçonneuse pour transformer des sections d'une piece usinee en forme de plaque et procede associe Active EP3144076B1 (fr)

Applications Claiming Priority (1)

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DE102015217887.0A DE102015217887A1 (de) 2015-09-17 2015-09-17 Werkzeug für eine Stanzmaschine zum Umformen von Abschnitten eines plattenförmigen Werkstücks und Verfahren dazu

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EP3144076B1 true EP3144076B1 (fr) 2019-12-18

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IT201800010409A1 (it) * 2018-11-16 2020-05-16 Cml Int S P A Macchina per curvare un pezzo allungato senza formazione di grinze
SE543070C2 (en) * 2019-03-22 2020-09-29 Lumeo Tech Ab Fastening device for removably attaching an object, as well as a method for removably attaching an object
DE102019119848A1 (de) * 2019-07-23 2021-01-28 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Werkzeug und Verfahren zum Bearbeiten von plattenförmigen Werkstücken, insbesondere Blechen
RU2766613C1 (ru) * 2021-06-02 2022-03-15 Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" Универсальный штамп для гибки листового металла

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US5404742A (en) * 1993-07-09 1995-04-11 Ready Tools Inc. Rotary hemming device
EP2143507B1 (fr) * 1999-01-13 2015-08-12 Amada Company, Limited Système de presse plieuse, procédé de montage d'outils sur un tel système et procédé de fabrication de produits de presse plieuse
JP2000317529A (ja) * 1999-05-14 2000-11-21 Eiko Seisakusho:Kk 回転式折り曲げ加工機
DE20018936U1 (de) 2000-11-07 2001-01-25 Trumpf Gmbh & Co Maschine für die Bearbeitung von Werkstücken, insbesondere Maschine für die Blechbearbeitung sowie Drehbiegewerkzeug für eine derartige Maschine
DE10223637B4 (de) * 2002-05-28 2007-11-08 Pass Stanztechnik Ag Biege-Werkzeug
DE20310428U1 (de) * 2003-07-07 2003-09-18 Trumpf Werkzeugmaschinen Gmbh Biegewerkzeug mit einstellbaren Werkstückwiderlagersegmenten sowie Biegemaschine mit einem derartigen Biegewerkzeug
US20090071223A1 (en) * 2007-09-19 2009-03-19 Rogers Bryan L Staged Tooling Technology
CN102009094B (zh) * 2010-09-30 2014-05-28 厦门正黎明冶金机械有限公司 转轴式翻转折边机
DE102015000959A1 (de) * 2015-01-27 2015-07-02 Daimler Ag Vorrichtung und Verfahren zum Abkanten von Blechen
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US10486214B2 (en) 2019-11-26
EP3144076A1 (fr) 2017-03-22
US20170080471A1 (en) 2017-03-23
DE102015217887A1 (de) 2017-03-23
CN106825231A (zh) 2017-06-13
CN106825231B (zh) 2021-05-14

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