EP3144076A1 - Tool for a stamping machine for shaping sections of a platelike workpiece and method for same - Google Patents
Tool for a stamping machine for shaping sections of a platelike workpiece and method for same Download PDFInfo
- Publication number
- EP3144076A1 EP3144076A1 EP16189239.3A EP16189239A EP3144076A1 EP 3144076 A1 EP3144076 A1 EP 3144076A1 EP 16189239 A EP16189239 A EP 16189239A EP 3144076 A1 EP3144076 A1 EP 3144076A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- tool
- segments
- workpiece
- segment
- 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
- 238000000034 method Methods 0.000 title claims description 15
- 238000007493 shaping process Methods 0.000 title 1
- 238000005452 bending Methods 0.000 claims abstract description 187
- 238000004080 punching Methods 0.000 claims abstract description 27
- 230000003993 interaction Effects 0.000 claims abstract 2
- 125000006850 spacer group Chemical group 0.000 claims description 52
- 230000008569 process Effects 0.000 claims description 12
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005555 metalworking Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000000844 transformation Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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- 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
- 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
- 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
- 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 invention relates to a tool for forming portions of a plate-shaped workpiece, in particular a tool for forming portions of a plate-shaped workpiece for a punching machine.
- the document DE 200 18 936 U1 discloses a machine for sheet metal working with a rotary bending tool. With the aid of the tool, a single deformation of a section, in particular a tab, can be produced in a plate-shaped workpiece.
- the deformed portion has a width which corresponds to a maximum of one length of a punch and a bending roller. If narrower formations are to be created, the workpiece must be punched so far that the entire length of the punch and the bending roller are within the punched-out area. A reshaping of, for example, closely adjacent tabs is thus not possible. For such forming, it is necessary to provide task-specific special tools.
- the invention is based on the object to provide a forming tool for a punching machine, which does not have the above disadvantages, and makes it possible with little effort to produce transformations with different widths.
- the bending punch and the bending roller by constructing the bending punch and the bending roller with segments, starting from a maximum design-related length, it is possible to reduce an effective length of a bending roller to avoid unnecessarily large punched-out areas for creating a tab.
- Fig. 1 is an embodiment of a sheet metal working machine, namely a punching machine 1, shown.
- An essential part of the punching machine 1 is a C-frame 2.
- the C-frame 2 consists of a torsion-resistant welded steel construction.
- a hydraulic unit 3 is provided, with which a plunger 4 is hydraulically driven via a ram drive, not shown.
- a lower tool holder 5 for receiving a lower tool part of a punching or forming tool 12 is provided.
- the lower tool holder 5 is rotatable about a rotary drive, not shown, through 360 ° and lockable in any angular position.
- the plunger 4 On the upper inside of the C-frame 2, the plunger 4 is provided.
- the plunger 4 with an upper tool holder 6 receives a tool upper part of the punching or forming tool 12 positively and without play.
- the plunger 4 is also rotatable by 360 ° and can be detected in any angular position. For a second rotary drive, not shown, is present.
- a machine table 7 On the lower inside of the C-frame 2, a machine table 7 is further arranged, which has a transverse rail 8 with a linear magazine for the punching or forming tools 12. At the cross rail 8 clamping claws 9 for holding a plate-shaped workpiece 10, here a metal plate, arranged. In the linear magazine several, here three, tool holders 11 for several, here two, tools 12 are present.
- the machine table 7 travels in a Y direction together with the cross rail 8, to which the clamping claws 9 are fastened, with which the plate-shaped workpiece 10 is held, in a programmed position.
- the cross rail 8 moves to the programmed position, wherein the plate-shaped workpiece 10 slides over the machine table 7.
- a working stroke is performed by the plunger 4, in which the plate-shaped workpiece 10 is punched or formed in accordance with the recorded in the tool holders 5, 6 tool.
- the next punching position is approached according to the same principle.
- the punching or forming tools 12 are automatically changed by a machine control device, not shown, changed.
- a machine control device to change the tools 12 from the tool magazine travels the cross rail 8, driven by a linear drive, not shown, in a position in an X direction, so that the X position of the tool to be loaded 12 of the X position of the lower tool holder 5 corresponds.
- the cross rail 8 then moves together with the machine table 7, driven by a further linear drive, in 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 4th matches, so that the punching tool 12 can be received in the lower tool holder 5 and in the upper tool holder 6.
- Fig. 2 shows an isometric view of a tool shell 21 of a tool according to the invention.
- the tool upper part 21 has as a means for receiving in the upper tool holder 6 of the punching machine 1 a punch shaft 22.
- the upper tool part 21 also has a first adapter flange 23, via which the upper part of the tool can be received in one of the tool holders 11 of the tool magazine. Opposite the punch shaft 22, the upper tool part 21 on a punch 24.
- the bending punch 24 is subdivided into a plurality of first bending segments 25 in this embodiment.
- the bending punch 24 further has a bending edge, which is formed by aligned bending edges 34 on the bending segments 25. Between some of the first bending segments 25, first spacer segments 26 are provided. In each case one spacer segment 26 or a plurality of first spacer segments 26 may be provided.
- the first bending segments 25 and the spacer segments 26 are fastened to the tool upper part 21 via a clamping strip 27.
- first bending segments 25 and the first spacer segments 26 may be fastened to the tool upper part 21 in another manner, for example by screwing or via a dovetail connection.
- a segmentation of the punch 24 is not necessarily required. If on the top of the plate-shaped workpiece 10 no surveys are provided at the locations where no sections to be reshaped, the bending punch 24 may also be provided continuously with the bending edge 34.
- FIG. 3 an isometric view of an embodiment of a tool base 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 described later, on which are applied second bending segments 31 ', 31 ", namely bending segments of the bending roller 30. Between some of the second bending segments 31', 31" are provided second spacer segments 32 ', 32 " second spacer 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 tool top 21 and the second bending segments 31 ', 31 "of the tool base 28 cooperate to reshape portions of the plate-shaped workpiece 10, in this case to bend as tabs, as described later.
- the required position of the tool top 21 and the tool bottom 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 spacer segments 32', 32" in the tool lower part 28 are rotatable about a rotation axis 33.
- the axis of rotation 33 extends in a direction of the bending edge 34 of the punch 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 plunger 4.
- the second ejector 36 is opposite to the first ejector 35 with respect to the bending roller 30.
- the bending punch 24 is here in the tool upper part 21 and the bending roller 30 is contained in the tool lower part 28.
- the bending roller is in the tool upper part and the bending punch 24 is provided in the tool lower part.
- FIGS. 4a and 4b In each case, a schematic side view of the first bending segment 25 of the bending punch 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 a situation during the forming process shown.
- the first bending segment 25 has an approximately entire surface facing the plate-shaped workpiece 10 as a bearing surface 37. Excluded areas of the facing surface are merely a radius of the bending edge 34 and any radii or chamfers on the edges of the surface.
- the second bending segment 31 ' has a substantially circular cross-section here with a specific diameter about 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 further 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 portion 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 portion 40 with a transition region to the circular cross-section, in this case a radius.
- the sector-shaped recesses 38 of the second bending segments 31 ', 31 “have identical angles to respectively reshape the sections of the plate-shaped workpiece 10.
- the sector-shaped recesses 38 of the second bending segments 31', 31" may have different angles , so that, for example, tabs can be bent out of the workpiece 10, the different angles to 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 various embodiments of the first spacer segments 26 of the punch 24th
- the first spacer segment 26 'analogous to the first bending segment 25 an approximately entire surface facing the workpiece 10 during the forming process as a bearing surface 41 on the workpiece 10.
- Fig. 5b 1 shows the first spacer segment 26 "which, unlike the first spacer segment 26 ', has no bearing surface but a bevelled lower surface 43. Therefore, the surface 43 of the first spacer segment 26" facing the plate-shaped workpiece 10 is at a distance from the workpiece during the forming process 10th
- the spacer segment 26 '" has a cutout 42 on the surface facing the workpiece 10. Due to the cutout 42, the spacer segment 26"' has a bearing surface 41 in a section of the surface 43 facing the workpiece 10, whereas a further segment the workpiece 10 facing surface by the cutout 42 during the forming process at a distance from the plate-shaped workpiece 10 has.
- the spacer segment 26 "' is immediately adjacent the first bending segments 25 are used when upwardly directed transformations are present in non-formed areas near the deformed sections.
- Fig. 6 11 shows a side view of one embodiment of a second spacer segment 32 ', namely a spacer segment of the bending roller 30.
- the second spacer segment 32' is annular and has an outer diameter d a having a maximum dimension so that a plane through the second spacer segment 32 ' , in which the second leg 44 is located and which is parallel to the axis of rotation 33, is not cut.
- An inner diameter di of the second spacer segment 32 is adapted to the diameter of the later-described shaft of the bending roller 30.
- a position of the plate-shaped workpiece 10 is first approached by the punching machine 1, which is adapted to introduce the introduced formations at desired positions.
- the punching machine 1 which is adapted to introduce the introduced formations at desired positions.
- the bending roller 30 is in a rest position, ie in an orientation in which the sector-shaped recess 38 is directed in a direction towards the punch 24.
- an angle bisector of the sector-shaped recess 38 is perpendicular to the underside of the plate-shaped workpiece 10th
- 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 by the bearing surface 37 and the bending edge 34 of the first bending segment 25 on the actuating portion 40 of the second bending segment 31 'of the bending roller 30, so that the actuating portion 40 is acted upon.
- the second bending segment 31 'and thus the bending roller 30 is deflected from the rest position about the rotation axis 33 rotationally.
- the workpiece 10 is pressed into the recess 38 while a portion corresponding to a width of the second bending segment 31 ', bending deformed.
- the portion is "over-arched", ie, the first bending segment 25 is moved toward the second bending segment 31 'so far that the deformed portion deforms slightly more than at a right angle is, in which case when a moving apart of the first bending segment 25 and the second bending segment 31 'by a resilient spring back of the material, a right angle is formed.
- the number, spacing and dimensions of the formed portions are dependent on the number, arrangement and width of the second bending segments 31 '.
- next position of the plate-shaped workpiece 10 is approached, which is adapted to introduce the next to be introduced transformations at desired positions.
- Fig. 7 is a sectional side view of the tool base 28 of Fig. 3 shown.
- a second embodiment of the second bending segments 31 is provided.
- the second bending segment 31 also has the same as that in FIG Fig. 4a and 4b shown second bending segment 31 'on the sector-shaped recess 38 and the opening 45 for insertion of the wave described later.
- the actuating portion 40 does not consist of the second leg of the sector-shaped recess 38 and the transition region to the circular cross-section of the bending segment 31 'shown second bending segment 31'.
- the second bending segment 31 "has a cross section which is circular in a first sector about the rotation axis 33, like the second bending segment 31 ', with the specific diameter of the second bending segment 31', but here additionally a second sector is provided
- the second sector also has a second predetermined diameter which is larger than the first predetermined diameter in the first sector
- the tool lower part 28 has a recess which is complementary to the second sector, so that the second sector can move in the recess and stick to it supported, so that the shaft is supported in the opening 45.
- the first ejector 35 is disposed relative to the second bending segment 31 "such that the operating portion 40 of the second bending segment 31" lies below a portion of the first ejector 35 so that the first ejector 35 engages with the actuating portion 40 of the second flexion segment 31 " is.
- the first ejector 35 further has on its side facing away from the bending roller 30 a ramp, so that the workpiece 10 can easily drive onto the lower tool part 28.
- the actuating portion 40 of the second bending segment 31 "of the bending roller 30 is not actuated directly over the workpiece 10, as in the case of the bending segment 31 'of the first embodiment, but the actuating portion 40 of the bending segment 31" is the relative movement of the punch 24th to the bending roller 30 via the workpiece 10 and the first ejector 35 acted upon.
- the bending roller 30 is already moved from its rest position, before the plate-shaped workpiece 10 "impinges on the second bending segments 31", so that a beating of the workpiece is prevented on the stationary bending roller 30 and damage to the sheet by the bending segments 31 "reduced or prevented ,
- the second ejector 36 has, like the first ejector 35, on its side facing away from the bending roller 30 a bevel at the upper edge, so that the plate-shaped workpiece can easily drive on this side of the tool base 28.
- 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 be pushed down only by the plate-shaped workpiece 10 in the working stroke of the punching machine 1. There is a risk that the plate-shaped workpiece 10 is deformed unintentionally. Due to the coupling and the simultaneous movement there is also the possibility of making punched-out areas smaller in order to be deformed sections.
- a perspective view of a shaft 45 is shown.
- the shaft 45 has a length which is slightly larger than the length of the bending roller 30.
- the shaft 46 has a circular cross-section with a first flattening 47 and a second flattening 48. The size of the two flats is different.
- the shaft 46 fits positively into the opening 45 in the second bending segments 31 'and 31 ".
- the first, larger flattening 47 is a driving surface.
- a torque is primarily transmitted between the shaft 46 and the second bending segments 31 ', 31 "when the actuating portion 40 of the in Fig. 7 shown second bending segment 31 "is on the one hand via its actuating portion 40 of this second bending segment 31” rotationally deflected.
- the torque for the rotary deflection to the second bending segment 31' which itself has no engaging in the first ejector 35 operating portion transferred.
- the second, smaller flat 48 is an auxiliary surface. It serves as a coding so that the second bending segments 31 ', 31 "can not be mounted in a wrong orientation on the shaft 46.
- the shaft 46 need not necessarily have a circular cross section with flats, but may alternatively have a different cross section, as long as it is not symmetrical to an axis which is perpendicular to an axis 49 of the shaft 46.
- Fig. 9 is again a sectional side view of the tool base 28 of Fig. 3 shown. Here, the section is laid so that a second embodiment of one of the spacer segments 32 "is shown.
- the second spacer segment 32" also has a sector here Radius that is opposite the radius of the in Fig. 6 shown second distance segment 32 'is greater.
- the actuating portion 40 is also formed here, which is in engagement with the first ejector 35.
- the tool lower part 28 points in a movement range of the sector with the larger radius when rotating the second spacer segment 32 'and thus the bending roller 30 a recess which 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 spacer segment 32 ".
- the second spacer 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 the second spacer segment 32 "has the plane in which the second leg 44 of the sector-shaped recess 38 the adjacent second bending segments 31 ', 31 "and which is parallel to the axis of rotation 33 is not cut.
- the second spacer segment 32 "penetrates into the in Fig. 4b shown position of the second bending segment 31 ', in which the second leg 44 abuts an underside of the workpiece 10, not in the plate-shaped workpiece 10 and does not deform this.
- the second spacer segment 32 also has the opening 45, into which the shaft 46 is received in a form-fitting manner, whereby a torque can be transmitted to the second bending segments 31 ', 31" via the action of the actuating section 40 of the second spacer 32 " without the spacer segment 32 "itself performing a bending operation.
- a return element 49 is shown, with which the bending roller 30 is urged into its rest position.
- the return element 49 engages an engagement surface of the second spacer segment 32 ", so that in the rest position, when the actuating sections 40 are not acted upon, a defined orientation of the bending roller 30 is ensured prevents a collision of the bending roller 30 with the plate-shaped workpiece when driving over the lower tool part 28.
- Fig. 10 shows an isometric view of the already in Fig. 3
- the side guide 50 has in a shaft 46 facing surface on a circular segment-shaped groove 51, in each of which an end portion of the shaft 46 engages.
- the side guide 50 is arranged on both sides of the shaft 46 adjacent to the tool base 28, that the center of the circular segment-shaped groove 51 is located on the axis of rotation 33.
- the width of the first bending segments 25 may be different.
Abstract
Ein Werkzeug für eine Stanzmaschine (1), zum Umformen von mindestens einem Abschnitt eines plattenförmigen Werkstücks (10), mit einem ersten Werkzeugteil (21) und einem zweiten Werkzeugteil (28), wird bereitgestellt Das erste Werkzeugteil (21) weist eine erste Einrichtung (22) zum Aufnehmen in eine erste Werkzeugaufnahme (6) der Stanzmaschine (1) und einen Biegestempel (24) mit einer Biegekante (34) auf. Das zweite Werkzeugteil (28) weist eine zweite Einrichtung (29) zum Aufnehmen in eine zweite Werkzeugaufnahme (5) der Stanzmaschine (1) und eine mit dem Biegestempel (24) zusammenwirkende Biegerolle (30), die um eine in Richtung der Biegekante (34) verlaufende Drehachse (33) drehbar ist, auf. Die Biegerolle (30) weist längs der Drehachse (33) eine sektorförmige Aussparung (38) mit einem Biegeschenkel (39) und einem zweiten Schenkel (44) sowie einen Betätigungsabschnitt (40) auf, der bei einer Relativbewegung des Biegestempels (24) und der Biegerolle (30) in Form eines Arbeitshubs der Stanzmaschine (1) beaufschlagbar ist, so dass die Biegerolle (30) während eines Umformvorgangs bei einer biegenden Verformung des Werkstücks (10) durch das Zusammenwirken des Biegestempels (24) und der Biegerolle (30) aus einer Ruhelage drehend auslenkbar ist, wobei die Biegerolle (30) in Richtung der Drehachse (33) mehrere zweite Biegesegmente (31', 31") aufweist.A tool for a punching machine (1) for forming at least a portion of a plate-shaped workpiece (10) with a first tool part (21) and a second tool part (28) is provided. The first tool part (21) has a first device (FIG. 22) for receiving in a first tool holder (6) of the punching machine (1) and a bending punch (24) with a bending edge (34). The second tool part (28) has a second device (29) for receiving into a second tool holder (5) of the punching machine (1) and a bending roller (30) which cooperates with the bending punch (24) and which is wound in the direction of the bending edge (34 ) extending axis of rotation (33) is rotatable on. The bending roller (30) has along the axis of rotation (33) a sector-shaped recess (38) with a bending leg (39) and a second leg (44) and an actuating portion (40) in a relative movement of the punch (24) and the Bending roller (30) in the form of a working stroke of the punching machine (1) can be acted upon, so that the bending roller (30) during a forming operation in a bending deformation of the workpiece (10) by the interaction of the punch (24) and the bending roller (30) a bending rest position is rotationally deflectable, wherein the bending roller (30) in the direction of the axis of rotation (33) has a plurality of second bending segments (31 ', 31 ").
Description
Die Erfindung betrifft ein Werkzeug zum Umformen von Abschnitten eines plattenförmigen Werkstücks, insbesondere ein Werkzeug zum Umformen von Abschnitten eines plattenförmigen Werkstücks für eine Stanzmaschine.The invention relates to a tool for forming portions of a plate-shaped workpiece, in particular a tool for forming portions of a plate-shaped workpiece for a punching machine.
Das Dokument
Der Erfindung liegt die Aufgabe zu Grunde, ein Umformwerkzeug für eine Stanzmaschine bereitzustellen, das die obigen Nachteile nicht aufweist, und das mit einem geringen Aufwand ermöglicht, Umformungen mit unterschiedlicher Breite herzustellen.The invention is based on the object to provide a forming tool for a punching machine, which does not have the above disadvantages, and makes it possible with little effort to produce transformations with different widths.
Die Aufgabe wird durch ein Werkzeug gemäß Anspruch 1 und ein Verfahren gemäß Anspruch 14 gelöst. Vorteilhafte Weiterentwicklungen der Erfindung sind Gegenstand der Unteransprüche.The object is achieved by a tool according to
Gemäß einem Aspekt der Erfindung, ist es durch einen Aufbau des Biegestempels und der Biegerolle mit Segmenten möglich, ausgehend von einer maximalen bauartbedingten Länge, eine wirksame Länge einer Biegerolle zu verringern, um unnötig große freigestanzte Bereiche zum Erstellen einer Lasche zu vermeiden. Zusätzlich ist es möglich, mehrere wirksame Abschnitte, mit denen in einem Hub mehrere nebeneinanderliegende Umformungen, beispielsweise Laschen in einem plattenförmigen Werkstück, erstellt werden können, individuell zu realisieren.According to one aspect of the invention, by constructing the bending punch and the bending roller with segments, starting from a maximum design-related length, it is possible to reduce an effective length of a bending roller to avoid unnecessarily large punched-out areas for creating a tab. In addition, it is possible to realize a plurality of effective sections with which a plurality of juxtaposed deformations, for example, tabs in a plate-shaped workpiece, can be created individually in one stroke.
Die Erfindung wird nun anhand von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Zeichnungen erläutert.The invention will now be explained by means of embodiments with reference to the accompanying drawings.
Insbesondere zeigen:
- Fig. 1
- eine Blechbearbeitungsmaschine in Form einer Stanzmaschine;
- Fig. 2
- eine isometrische Ansicht eines Werkzeugoberteils des erfindungsgemäßen Werkzeugs;
- Fig. 3
- eine isometrische Ansicht einer Ausführungsform eines Werkzeugunterteils des erfindungsgemäßen Werkzeugs;
- Fig. 4a
- eine schematische Seitenansicht eines Biegestempelsegments und eines Biegesegments vor einem Umformvorgang;
- Fig. 4b
- eine schematische Seitenansicht des Biegestempelsegments und des Biegesegments während eines Umformvorgangs;
- Fig. 5a bis
- schematische Seitenansichten von verschiedenen
- Fig. 5c
- Ausführungsformen von Abstandssegmenten des Biegestempels;
- Fig. 6
- eine Seitenansicht einer Ausführungsform eines Abstandssegments der Biegerolle;
- Fig. 7
- eine geschnittene Seitenansicht eines Segments des Biegestempels und des Werkzeugunterteils von
Fig. 3 mit einem Biegesegment der Biegerolle vor dem Umformvorgang, wobei ein Betätigungsabschnitt des Biegesegments mit einem Auswerfer im Eingriff ist; - Fig. 8
- eine perspektivische Darstellung einer Welle der Biegerolle;
- Fig. 9
- eine geschnittene Seitenansicht des Werkzeugunterteils von
Fig. 3 mit einem Abstandssegment der Biegerolle vor dem Umformvorgang, wobei ein Betätigungsabschnitt des Abstandssegments mit dem Auswerfer im Eingriff ist; und - Fig. 10
- eine isometrische Darstellung einer Seitenführung der Welle.
- Fig. 1
- a sheet metal working machine in the form of a punching machine;
- Fig. 2
- an isometric view of a tool upper part of the tool according to the invention;
- Fig. 3
- an isometric view of an embodiment of a tool lower part of the tool according to the invention;
- Fig. 4a
- a schematic side view of a bending punch segment and a bending segment before a forming process;
- Fig. 4b
- a schematic side view of the bending punch segment and the bending segment during a forming process;
- Fig. 5a to
- schematic side views of different
- Fig. 5c
- Embodiments of spacer segments of the punch;
- Fig. 6
- a side view of an embodiment of a spacer segment of the bending roller;
- Fig. 7
- a sectional side view of a segment of the punch and the lower tool part of
Fig. 3 with a bending segment of the bending roller before the forming operation, wherein an operating portion of the bending segment with an ejector is engaged; - Fig. 8
- a perspective view of a shaft of the bending roller;
- Fig. 9
- a sectional side view of the tool part of
Fig. 3 with a distance segment of Bending roller before the forming process, wherein an actuating portion of the spacer segment with the ejector is engaged; and - Fig. 10
- an isometric view of a side guide of the shaft.
In
Am hinteren Ende des C-Rahmens 2 ist ein Hydraulikaggregat 3 vorgesehen, mit dem ein Stößel 4 über einen nicht gezeigten Stößelantrieb hydraulisch angetrieben wird.At the rear end of the C-
Auf der unteren Innenseite des C-Rahmens 2 ist eine untere Werkzeugaufnahme 5 zum Aufnehmen eines Werkzeugunterteils eines Stanz- oder Umformwerkzeugs 12 vorgesehen. Die untere Werkzeugaufnahme 5 ist über einen nicht gezeigten Drehantrieb um 360° drehbar und in jeder beliebigen Winkellage feststellbar.On the lower inside of the C-
Auf der oberen Innenseite des C-Rahmens 2 ist der Stößel 4 vorgesehen. Der Stößel 4 mit einer oberen Werkzeugaufnahme 6 nimmt ein Werkzeugoberteil des Stanz- oder Umformwerkzeugs 12 formschlüssig und spielfrei auf. Der Stößel 4 ist ebenfalls um 360° drehbar und kann in jeder beliebigen Winkellage festgestellt werden. Dafür ist ein nicht gezeigter zweiter Drehantrieb vorhanden.On the upper inside of the C-
Auf der unteren Innenseite des C-Rahmens 2 ist ferner ein Maschinentisch 7 angeordnet, der eine Querschiene 8 mit einem Linearmagazin für die Stanz- bzw. Umformwerkzeuge 12 aufweist. An der Querschiene 8 sind Spannpratzen 9 zum Festhalten eines plattenförmigen Werkstücks 10, hier einer Blechplatte, angeordnet. In dem Linearmagazin sind mehrere, hier drei, Werkzeugaufnahmen 11 für mehrere, hier zwei, Werkzeuge 12 vorhanden.On the lower inside of the C-
Im Betrieb fährt der Maschinentisch 7 in einer Y-Richtung gemeinsam mit der Querschiene 8, an der die Spannpratzen 9 befestigt sind, mit denen das plattenförmige Werkstück 10 gehalten wird, in eine programmierte Position. In X-Richtung fährt die Querschiene 8 in die programmierte Position, wobei das plattenförmige Werkstück 10 über den Maschinentisch 7 gleitet. Anschließend wird von dem Stößel 4 ein Arbeitshub durchgeführt, in dem das plattenförmige Werkstück 10 entsprechend dem in den Werkzeugaufnahmen 5, 6 aufgenommenem Werkzeug gestanzt oder umgeformt wird. Im Anschluss daran wird die nächste Stanzposition nach dem gleichen Prinzip angefahren.In operation, the machine table 7 travels in a Y direction together with the cross rail 8, to which the clamping claws 9 are fastened, with which the plate-shaped
Die Stanz- oder Umformwerkzeuge 12 werden automatisch, durch eine nicht gezeigte Maschinensteuerungsvorrichtung angesteuert, gewechselt. Zum Wechseln der Werkzeuge 12 aus dem Werkzeugmagazin fährt die Querschiene 8, angetrieben von einem nicht gezeigten Linearantrieb, in eine Position in einer X-Richtung, so dass die X-Position des einzuwechselnden Werkzeugs 12 der X-Position der unteren Werkzeugaufnahme 5 entspricht. Die Querschiene 8 fährt dann gemeinsam mit dem Maschinentisch 7, von einem weiteren Linearantrieb angetrieben, in eine Position in der Y-Richtung, in der eine Achse des Werkzeugs 12 mit einer Mittelachse der unteren Werkzeugaufnahme 5 und dem Stößel 4 übereinstimmt, so dass das Stanzwerkzeug 12 in die untere Werkzeugaufnahme 5 und in die obere Werkzeugaufnahme 6 aufgenommen werden kann.The punching or forming
Der Biegestempel 24 ist in dieser Ausführungsform in mehrere erste Biegesegmente 25 unterteilt. Der Biegestempel 24 weist ferner eine Biegekante auf, die durch fluchtende Biegekanten 34 an den Biegesegmenten 25 gebildet ist. Zwischen einigen der ersten Biegesegmente 25 sind erste Abstandssegmente 26 vorgesehen. Es können jeweils ein Abstandssegment 26 oder mehrere erste Abstandssegmente 26 vorgesehen sein. Die ersten Biegesegmente 25 und die Abstandssegmente 26 sind über eine Klemmleiste 27 an dem Werkzeugoberteil 21 befestigt.The bending
Die ersten Biegesegmente 25 und die ersten Abstandssegmente 26 können alternativ auch auf eine andere Art, beispielsweise über anschrauben oder über eine Schwalbenschwanzverbindung an dem Werkzeugoberteil 21 befestigt sein.Alternatively, the
In einer alternativen Ausführungsform ist nicht zwingend eine Segmentierung des Biegestempels 24 erforderlich. Sofern auf der Oberseite des plattenförmigen Werkstücks 10 keine Erhebungen an den Stellen vorgesehen sind, an denen keine umzuformenden Abschnitte sind, kann der Biegestempel 24 auch durchgehend mit der Biegekante 34 versehen sein.In an alternative embodiment, a segmentation of the
In
Das Werkzeugunterteil 28 weist einen zweiten Adapterflansch 29 auf, mittels dessen das Werkzeugunterteil 28 in die untere Werkzeugaufnahme 5 und auch optional gemeinsam mit dem Werkzeugoberteil 21 in einer der Werkzeugaufnahmen 11 des Werkzeugmagazins der Stanzmaschine 1 aufgenommen werden kann.The
Das Werkzeugunterteil 28 weist ferner eine Biegerolle 30 auf. Die Biegerolle weist eine später beschriebene Welle auf, auf der zweite Biegesegmente 31', 31", nämlich Biegesegmente der Biegerolle 30 aufgebracht sind. Zwischen einigen der zweiten Biegesegmente 31', 31" sind zweite Abstandssegmente 32', 32" vorgesehen. Es können mehrere zweite Abstandssegmente 32', 32" zwischen den zweiten Biegesegmenten 31', 31" vorgesehen sein. An beiden Enden der Biegerolle 30 sind später beschriebene Seitenführungen 50 vorgesehen.The
Die ersten Biegesegmente 25 des Werkzeugoberteils 21 und die zweiten Biegesegmente 31', 31" des Werkzeugunterteils 28 wirken zusammen, um, wie später beschrieben, Abschnitte des plattenförmigen Werkstücks 10 umzuformen, in diesem Fall als Laschen zu biegen. Die ersten und zweiten Biegesegmente 25, 31', 31" sind an Positionen in dem Biegestempel 24 und der Biegerolle 30 angeordnet, so dass die Laschen in der gewünschten Anzahl, Größe und in den gewünschten Abständen angefertigt werden können. Die erforderliche Position des Werkzeugoberteils 21 und des Werkzeugunterteils 28 zum Bilden der Umformungen in den gewünschten Positionen des plattenförmigen Werkstücks 10 wird durch die programmierte Position des plattenförmigen Werkstücks 10 festgelegt.The
Die zweiten Biegesegmente 31', 31" und die zweiten Abstandssegmente 32', 32" in dem Werkzeugunterteil 28 sind um eine Drehachse 33 drehbar. Die Drehachse 33 verläuft in einer Richtung der Biegekante 34 des Biegestempels 24.The
Das Werkzeugunterteil 28 ist ferner optional mit einem ersten Auswerfer 35 und einem zweiten Auswerfer 36 versehen. Die Auswerfer 35, 36 sind in einer Richtung des Arbeitshubs des Stößels 4 gefedert gelagert. Der zweite Auswerfer 36 liegt dem ersten Auswerfer 35 bezüglich der Biegerolle 30 gegenüber.The
Der Biegestempel 24 ist hier in dem Werkzeugoberteil 21 und die Biegerolle 30 ist in dem Werkzeugunterteil 28 enthalten. In einem alternativen Werkzeug ist die Biegerolle in dem Werkzeugoberteil und der Biegestempel 24 ist in dem Werkzeugunterteil vorgesehen.The bending
In den
Das erste Biegesegment 25 weist eine annähernd gesamte dem plattenförmigen Werkstück 10 zugewandte Fläche als eine Auflagefläche 37 auf. Ausgeschlossene Bereiche der zugewandten Fläche sind lediglich ein Radius der Biegekante 34 und eventuelle Radien oder Fasen an den Kanten der Fläche.The
Das zweite Biegesegment 31' weist einen hier im Wesentlichen kreisförmigen Querschnitt mit einem bestimmten Durchmesser um eine Mittelachse auf, die der Drehachse 33 entspricht. Längs der Drehachse 33 ist das zweite Biegesegment 31' mit einer Aussparung 38 mit einem sektorförmigen Querschnitt, hier einen Sektor von 90°, versehen.The second bending segment 31 'has a substantially circular cross-section here with a specific diameter about a central axis, which corresponds to the axis of
Das zweite Biegesegment 31' ist ferner mit einem Durchbruch 45 versehen, in den eine später beschriebene Welle eingeführt werden kann.The second bending segment 31 'is further provided with an
Ein Schenkel der sektorförmigen Aussparung 38 ist ein Biegeschenkel 39, mit dem der Abschnitt des plattenförmigen Werkstücks 10 umgeformt wird. Ein zweiter Schenkel 44 der sektorförmigen Aussparung 38 wirkt hier als ein Betätigungsschenkel, der mit einem Übergangsbereich zu dem kreisförmigen Querschnitt, hier einem Radius, als ein Betätigungsabschnitt 40 wirkt.One leg of the sector-shaped
In dieser Ausführungsform haben die sektorförmigen Aussparungen 38 der zweiten Biegesegmente 31', 31" identische Winkel, um die Abschnitte des plattenförmigen Werkstücks 10 jeweils in eine gleiche Form umzuformen. Alternativ können die sektorförmigen Aussparungen 38 der zweiten Biegesegmente 31', 31" unterschiedliche Winkel aufweisen, so dass z.B. Laschen aus dem Werkstück 10 herausgebogen werden können, die unterschiedliche Winkel zu dem Werkstück 10 aufweisen. Der Radius der sektorförmigen Aussparung 38 nahe der Drehachse 33 wird in Abhängigkeit von dem gewünschten Biegeradius gewählt.In this embodiment, the sector-shaped
Die
In
In
Im Betrieb wird durch die Stanzmaschine 1 zunächst eine Position des plattenförmigen Werkstücks 10 angefahren, die dazu geeignet ist, die einzubringenden Umformungen an gewünschten Positionen einzubringen. Wenn das Werkstück 10 in der geeigneten Position ist, wird, wie in den
Während des Verfahrens des Werkstücks 10 ist die Biegerolle 30 in einer Ruhelage, d.h. in einer Orientierung, in der die sektorförmige Aussparung 38 in einer Richtung zu dem Biegestempel 24 hin gerichtet ist. Günstigerweise ist eine Winkelhalbierende der sektorförmigen Aussparung 38 dabei senkrecht zu der Unterseite des plattenförmigen Werkstücks 10.During the process of the
Dann wird, wie in
Die Anzahl, der Abstand und Abmessungen der umgeformten Abschnitte sind abhängig von der Anzahl, der Anordnung und der Breite der zweiten Biegesegmente 31'.The number, spacing and dimensions of the formed portions are dependent on the number, arrangement and width of the second bending segments 31 '.
Im Anschluss an diesen Vorgang wird die nächste Position des plattenförmigen Werkstücks 10 angefahren, die dazu geeignet ist, die nächsten einzubringenden Umformungen an gewünschten Positionen einzubringen.Following this process, the next position of the plate-shaped
In
Das zweite Biegesegment 31" weist ebenfalls wie das in
Im Unterschied zu dem in
Der erste Auswerfer 35 ist relativ zu dem zweiten Biegesegment 31" so angeordnet, dass der Betätigungsabschnitt 40 des zweiten Biegesegments 31" unterhalb eines Abschnitts des ersten Auswerfer 35 liegt, so dass der erste Auswerfer 35 mit dem Betätigungsabschnitt 40 des zweiten Biegesegments 31" im Eingriff ist.The
Der erste Auswerfer 35 weist ferner auf seiner der Biegerolle 30 abgewandten Seite eine Auflaufschräge auf, so dass das Werkstück 10 problemlos auf das Werkzeugunterteil 28 auffahren kann.The
Im Betrieb wird hier der Betätigungsabschnitt 40 des zweiten Biegesegments 31" der Biegerolle 30 nicht, wie im Falle des Biegesegments 31' der ersten Ausführungsform, direkt über das Werkstück 10 betätigt, sondern der Betätigungsabschnitt 40 des Biegesegments 31" wird über die Relativbewegung des Biegestempels 24 zu der Biegerolle 30 über das Werkstück 10 und den ersten Auswerfer 35 beaufschlagt.In operation, the actuating
Dadurch wird die Biegerolle 30 bereits aus ihrer Ruhelage bewegt, bevor das plattenförmige Werkstück 10 auf die zweiten Biegesegmente 31" auftrifft, so dass ein Aufschlagen des Werkstücks auf die ruhende Biegerolle 30 verhindert wird und Beschädigungen des Blechs durch die Biegesegmente 31" verringert oder verhindert werden.As a result, the bending
Der zweite Auswerfer 36 weist, wie der erste Auswerfer 35, an seiner der Biegerolle 30 abgewandten Seite eine Auflaufschräge an der Oberkante auf, so dass das plattenförmige Werkstück auch von dieser Seite problemlos auf das Werkzeugunterteil 28 auffahren kann.The
Der zweite Auswerfer 36 ist mit dem ersten Auswerfer 35 gekoppelt, so dass sich der zweite Auswerfer 36 simultan mit dem ersten Auswerfer 35 bewegt. In einem Fall, in dem der zweite Auswerfer 36 nicht mit dem ersten Auswerfer 35 gekoppelt wäre, würde der zweite Auswerfer 36 bei dem Arbeitshub der Stanzmaschine 1 lediglich durch das plattenförmige Werkstück 10 nach unten gedrückt. Dabei besteht die Gefahr, dass das plattenförmige Werkstück 10 ungewollt verformt wird. Durch die Kopplung und das simultane Bewegen besteht auch die Möglichkeit freigestanzte Bereiche um zu verformende Abschnitte kleiner zu gestalten.The
In
Die erste, größere Abflachung 47 ist eine Mitnehmerfläche. Dadurch wird in erster Linie ein Drehmoment zwischen der Welle 46 und den zweiten Biegesegmenten 31', 31" übertragen. Bei der Beaufschlagung des Betätigungsabschnitts 40 des in
Die zweite, kleinere Abflachung 48 ist eine Hilfsfläche. Sie dient als Codierung, so dass die zweiten Biegesegmente 31', 31" nicht in einer falschen Orientierung auf die Welle 46 montiert werden können.The second, smaller flat 48 is an auxiliary surface. It serves as a coding so that the
Die Welle 46 muss nicht zwingend eine kreisrunden Querschnitt mit Abflachungen aufweisen, sondern kann alternativ auch einen anderen Querschnitt aufweisen, solange dieser nicht symmetrisch zu eine Achse ist, die senkrecht zu einer Achse 49 der Welle 46 ist.The
In
Wie das zweite Biegesegment 31" im Vergleich zu dem zweiten Biegesegment 31' den zweiten Sektor aufweist, in dem der zweite vorbestimmte Durchmesser größer als der erste vorbestimmte Durchmesser des ersten Sektors ist, weist auch das zweite Abstandssegment 32" hier einen Sektor auf, der einen Radius hat, der gegenüber dem Radius des in
Das zweite Abstandssegment 32" weist in einem Winkelbereich der sektorförmigen Aussparung 38 eines der benachbarten zweiten Biegesegmente 31', 31" eine maximale äußere Abmessung auf, so dass durch das zweite Abstandssegment 32" die Ebene, in der der zweite Schenkel 44 der sektorförmigen Aussparung 38 der benachbarten zweiten Biegesegmente 31', 31" liegt und die parallel zu der Drehachse 33 ist, nicht geschnitten wird. Dadurch dringt das zweite Abstandssegment 32" in der in
Das zweite Abstandssegment 32" weist ebenfalls den Durchbruch 45 auf, in den die Welle 46 formschlüssig aufgenommen ist. Dadurch kann über das Beaufschlagen des Betätigungsabschnitts 40 des zweiten Abstandselements 32" über die Welle 46 ein Drehmoment an die zweiten Biegesegmente 31', 31" übertragen werden, ohne dass das Abstandssegment 32" selbst einen Biegevorgang durchführt.The
In
Die Breite der ersten Biegesegmente 25 kann unterschiedlich sein. Ebenso kann die Breite der zweiten Biegesegmente 31', 31" unterschiedlich sein.The width of the
Alle in der Beschreibung, den Ansprüchen und der Zeichnung dargestellten Merkmale können sowohl einzeln als auch in beliebiger Kombination miteinander erfindungswesentlich sein.All features shown in the description, the claims and the drawing can be essential to the invention both individually and in any combination.
Claims (15)
das erste Werkzeugteil (21) eine erste Einrichtung (22) zum Aufnehmen in eine erste Werkzeugaufnahme (6) der Stanzmaschine (1) und einen Biegestempel (24) mit einer Biegekante (34) aufweist, und
das zweite Werkzeugteil (28) eine zweite Einrichtung (29) zum Aufnehmen in eine zweite Werkzeugaufnahme (5) der Stanzmaschine (1) und eine mit dem Biegestempel (24) zusammenwirkende Biegerolle (30), die um eine in Richtung der Biegekante (34) verlaufende Drehachse (33) drehbar ist, aufweist, wobei
the first tool part (21) has a first device (22) for receiving into a first tool receptacle (6) of the punching machine (1) and a bending punch (24) with a bending edge (34), and
the second tool part (28) has a second device (29) for receiving in a second tool holder (5) of the punching machine (1) and a bending roller (30) which cooperates with the bending punch (24) and moves in the direction of the bending edge (34). extending axis of rotation (33) is rotatable, wherein
mindestens ein zweites Abstandssegment (32") zwischen zwei zweiten Biegesegmenten (31', 31") der Biegerolle (30) vorgesehen ist, wobei das zweite Abstandssegment (32") in einem Winkelbereich der sektorförmigen Aussparung (38) eine maximale Außenabmessung senkrecht zu der Drehachse (33) hat, so dass das zweite Abstandssegment (32") eine Ebene, die parallel zu der Drehachse (33) ist und in der der zweite Schenkel (44) liegt, nicht schneidet, und
wobei die Biegerolle (30) eine Welle (46) mit einem vorbestimmten Querschnitt aufweist, und
die zweiten Biegesegmente (31', 31") und die zweiten Abstandssegmente (32") einen Durchbruch (45) aufweisen, der zu dem vorbestimmten Querschnitt der Welle (46) komplementär ist.Tool according to one of the preceding claims, wherein
at least one second spacer segment (32 ") is provided between two second bending segments (31 ', 31") of the bending roller (30), wherein the second spacer segment (32 ") has a maximum outer dimension perpendicular to the angular sector of the sector-shaped recess (38) Pivot axis (33) so that the second spacer segment (32 ") does not intersect a plane parallel to the axis of rotation (33) and in which the second leg (44) lies, and
wherein the bending roller (30) has a shaft (46) with a predetermined cross section, and
the second bending segments (31 ', 31 ") and the second spacer segments (32") have an aperture (45) that is complementary to the predetermined cross section of the shaft (46).
mindestens ein zweites Abstandssegment (32') zwischen zwei zweiten Biegesegmenten (31', 31") der Biegerolle (30) vorgesehen ist, wobei das zweite Abstandssegment (32') in einem Winkelbereich der sektorförmigen Aussparung (38) eine maximale Außenabmessung senkrecht zu der Drehachse (33) hat, so dass das zweite Abstandssegment (32') eine Ebene, die parallel zu der Drehachse (33) ist und in der der zweite Schenkel (44) liegt, nicht schneidet, und
wobei die Biegerolle (30) eine Welle (46) mit einem vorbestimmten Querschnitt aufweist, und
wobei mindestens eines der zweiten Abstandssegmente (32') ringförmig mit einem inneren Durchmesser (di), der dem Durchmesser der Welle (46) angepasst ist, ist.Tool according to one of claims 1 to 7, wherein
at least one second spacer segment (32 ') is provided between two second bending segments (31', 31 ") of the bending roller (30), the second spacer segment (32 ') having a maximum outer dimension perpendicular to the angular sector of the sector-shaped recess (38) Pivot axis (33) has, so that the second spacer segment (32 ') a plane which is parallel to the axis of rotation (33) and in which the second leg (44) is located, does not intersect, and
wherein the bending roller (30) has a shaft (46) with a predetermined cross section, and
wherein at least one of the second spacer segments (32 ') is annular with an inner diameter (d i ) adapted to the diameter of the shaft (46).
Applications Claiming Priority (1)
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DE102015217887.0A DE102015217887A1 (en) | 2015-09-17 | 2015-09-17 | Tool for a punching machine for forming portions of a plate-shaped workpiece and method thereof |
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EP3144076A1 true EP3144076A1 (en) | 2017-03-22 |
EP3144076B1 EP3144076B1 (en) | 2019-12-18 |
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US (1) | US10486214B2 (en) |
EP (1) | EP3144076B1 (en) |
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IT201800010409A1 (en) * | 2018-11-16 | 2020-05-16 | Cml Int S P A | Machine for bending an elongated piece without creasing |
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 (en) * | 2019-07-23 | 2021-01-28 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Tool and method for processing plate-shaped workpieces, in particular sheet metal |
RU2766613C1 (en) * | 2021-06-02 | 2022-03-15 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Universal die for bending sheet metal |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE20018936U1 (en) | 2000-11-07 | 2001-01-25 | Trumpf Gmbh & Co | Machine for the processing of workpieces, in particular machine for sheet metal processing and turning tool for such a machine |
DE10223637A1 (en) * | 2002-05-28 | 2003-12-11 | Pass Stanztechnik Ag | Bending tool for processing sheet metal plates comprises an upper tool and a lower tool which move along a common plane relative to each other, bending jaws, a stripper positioned to slide in the lower tool, and a pivoting bending stamp |
DE102015000958A1 (en) * | 2015-01-27 | 2015-07-02 | Daimler Ag | Device and method for folding sheet metal |
DE102015000959A1 (en) * | 2015-01-27 | 2015-07-02 | Daimler Ag | Apparatus and method for folding sheet metal |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5404742A (en) * | 1993-07-09 | 1995-04-11 | Ready Tools Inc. | Rotary hemming device |
WO2000041824A1 (en) * | 1999-01-13 | 2000-07-20 | Amada Company, Limited | Bending press system |
JP2000317529A (en) * | 1999-05-14 | 2000-11-21 | Eiko Seisakusho:Kk | Rotary type bending machine |
DE20310428U1 (en) * | 2003-07-07 | 2003-09-18 | Trumpf Werkzeugmaschinen Gmbh | Bending tool with adjustable workpiece abutment segments and bending machine with such a bending tool |
US20090071223A1 (en) * | 2007-09-19 | 2009-03-19 | Rogers Bryan L | Staged Tooling Technology |
CN102009094B (en) * | 2010-09-30 | 2014-05-28 | 厦门正黎明冶金机械有限公司 | Rotating shaft type turnover flanging method and flanging machine |
-
2015
- 2015-09-17 DE DE102015217887.0A patent/DE102015217887A1/en not_active Ceased
-
2016
- 2016-09-14 CN CN201610969511.3A patent/CN106825231B/en active Active
- 2016-09-16 EP EP16189239.3A patent/EP3144076B1/en active Active
- 2016-09-16 US US15/267,797 patent/US10486214B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20018936U1 (en) | 2000-11-07 | 2001-01-25 | Trumpf Gmbh & Co | Machine for the processing of workpieces, in particular machine for sheet metal processing and turning tool for such a machine |
DE10223637A1 (en) * | 2002-05-28 | 2003-12-11 | Pass Stanztechnik Ag | Bending tool for processing sheet metal plates comprises an upper tool and a lower tool which move along a common plane relative to each other, bending jaws, a stripper positioned to slide in the lower tool, and a pivoting bending stamp |
DE102015000958A1 (en) * | 2015-01-27 | 2015-07-02 | Daimler Ag | Device and method for folding sheet metal |
DE102015000959A1 (en) * | 2015-01-27 | 2015-07-02 | Daimler Ag | Apparatus and method for folding sheet metal |
Also Published As
Publication number | Publication date |
---|---|
CN106825231B (en) | 2021-05-14 |
US10486214B2 (en) | 2019-11-26 |
EP3144076B1 (en) | 2019-12-18 |
DE102015217887A1 (en) | 2017-03-23 |
CN106825231A (en) | 2017-06-13 |
US20170080471A1 (en) | 2017-03-23 |
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