EP3288696A1 - Outil pour poinçonneuse et procédé d'usinage d'une face frontale d'une pièce en forme de plaque - Google Patents

Outil pour poinçonneuse et procédé d'usinage d'une face frontale d'une pièce en forme de plaque

Info

Publication number
EP3288696A1
EP3288696A1 EP15735888.8A EP15735888A EP3288696A1 EP 3288696 A1 EP3288696 A1 EP 3288696A1 EP 15735888 A EP15735888 A EP 15735888A EP 3288696 A1 EP3288696 A1 EP 3288696A1
Authority
EP
European Patent Office
Prior art keywords
tool
workpiece
rolling body
face
tool part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15735888.8A
Other languages
German (de)
English (en)
Inventor
Martin Walz
Yakup Coskun
Markus Hees
Thomas Burzig
Peter Bytow
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.)
Filing date
Publication date
Application filed by Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Publication of EP3288696A1 publication Critical patent/EP3288696A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/005—Edge deburring or smoothing
    • 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
    • B21D28/34—Perforating tools; Die holders
    • 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
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • B21D28/265—Perforating, i.e. punching holes in sheets or flat parts with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet, e.g. holes punching with template

Definitions

  • the invention relates to a tool for a punching machine, in particular a tool for machining a front side of a plate-shaped workpiece and a method thereof.
  • a punching operation in a punching machine in which a plate-shaped workpiece, for example a sheet metal plate by means of nibbling, ie producing a cutting surface in several strokes, is processed, so-called nibbling marks are created on the cutting surface, which are caused by different edge indentations.
  • nibbling marks have a visually disturbing effect in certain fields of application or may also impair a function that is to be achieved by the cut surface.
  • burr formation occurs on one of the edges on the cut surface.
  • embossing tools to remove the burr.
  • An economic Deburring of the cut edges with any contour in a punching machine is not known.
  • the invention has for its object to provide a tool and a method which eliminates the above disadvantages and allows economical processing of a front side of a plate-shaped workpiece.
  • edges can be processed on the front side, for example, to remove a burr and / or to form a chamfer or a radius.
  • FIG. 1 shows a punching machine with a tool according to the invention.
  • FIG. 2 shows an embodiment of a tool with a rolling body mounted in a tool lower part, the rolling element also being mounted in an upper tool part;
  • FIG. 1 shows a punching machine with a tool according to the invention.
  • FIG. 2 shows an embodiment of a tool with a rolling body mounted in a tool lower part, the rolling element also being mounted in an upper tool part;
  • Fig. 3 shows an embodiment of a tool with in the
  • Rolling body mounted tool upper part, wherein the rolling body is also mounted in the lower tool part, and wherein the tool has a plurality of separate sliding elements on the tool lower or upper part;
  • Fig. 4 shows another embodiment of the tool in which the
  • Rolling body is stored with a cylindrical portion and a conical portion only in the lower tool part;
  • Fig. 5 shows an alternative embodiment of the tool of
  • Fig. 2 in which the rolling body additionally comprises two conical sections;
  • FIG. 6 shows a further alternative embodiment of the tool of FIG. 2 with a sprung ejector on the tool lower part
  • FIG. Fig. 7 shows a one-piece embodiment of the tool with a rolling body with two conical sections.
  • a punching machine 1 is 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 tool lower part 7 (see, eg, FIG. 2) of a tool 6 is provided.
  • the lower tool holder 5 is optionally provided with a drive, not shown, with which it can be moved in a Z-direction, ie up and down.
  • the plunger 4 On the upper inside of the C-frame 2, the plunger 4 is provided. With an upper tool holder 8, the plunger 4 receives a tool upper part 9 of the tool 6 in a form-fitting and play-free manner.
  • the punching machine 1 further comprises a workpiece moving device 16, which has a machine table 11 and a cross rail 12 with associated drives, not shown.
  • the actuators of the punching machine 1, for example, the plunger 4, the drive of the lower tool holder 5 and the drives of the workpiece moving device 16 for positioning a plate-shaped workpiece, here a metal plate 10 are controlled by a machine control device, not shown, which is provided in a separate cabinet. Processing programs and operating parameters are stored in a memory area of the control device.
  • the machine table 11, which has the cross rail 12 with a tool magazine 13, is arranged on the lower inner side of the C-frame 2.
  • clamping claws 14 arranged to hold the metal plate 10.
  • the clamping claws 14 can be fixed at suitable locations on the cross rail 12, and can be offset so that the metal plate 10 is held securely, but the metal plate 10 is not gripped on a surface to be machined.
  • In the tool magazine 13 a plurality of tool holders 15 for the tools 6 are present.
  • the machine table 11 travels in a Y direction to a programmed position together with the cross rail 12, to which the clamps 14 are fixed, with which the metal plate 10 is held, and the cross rail 12 moves in the X direction the programmed position, wherein the metal plate 10 slides over the machine table 11. Then, a punching stroke is performed by the plunger 4. Following this, the next punching position is approached with the same principle.
  • FIG. 2 shows an embodiment of the tool 6 with the tool lower part 7 and the tool upper part 9.
  • the lower tool part 7 has a rolling body 17.
  • the rolling body 17 is mounted in a first pivot bearing 18.
  • the first pivot bearing 18 is shown here as a plain bearing with a bushing as a radial bearing and a disc as thrust bearing.
  • the first pivot bearing 18 is formed as a rolling bearing, which supports the rolling body 17 in both the axial and in the radial direction.
  • the first pivot bearing 18 is arranged on a side facing the tool upper part 9 of the tool lower part 7 and has an axis of rotation 19.
  • the rotation axis 19 is provided perpendicular to an upper side of the sheet metal plate 10.
  • the rolling body 17 is axially rotatably mounted in the first pivot bearing 18. For this purpose, it has at one end a section whose dimensions are matched to the pivot bearing 18.
  • the rolling body 17 further has an axis 21 which coincides with the axis of rotation 19 of the first pivot bearing 18.
  • the rolling body 17 also has a portion 20 which protrudes in the direction of the upper tool part 9 of the lower tool part 7.
  • the second pivot bearing 22 is also shown here as a sliding bearing, in the form of a bearing bush as a radial bearing. Again, a rolling bearing is possible borrowed alternatively.
  • the dimensions of the second pivot bearing 22 are matched with the dimensions of a bearing portion of the rolling body 17 so that an axial portion of the rolling body 17 can enter the pivot bearing and is stored therein.
  • the roller body 17 at a free end on a conical portion which acts as a Ein Industrieskegel 24 and supports insertion of the rolling body 17 in the second pivot bearing 22.
  • the rolling body 17 is made of a material harder than that of the workpiece 10.
  • the bearing bush of the second pivot bearing 22 is here additionally designed as a sliding element 23 which projects from the side of the tool upper part 9 facing the tool lower part 7.
  • an underside of the upper tool part 9 may also have a sliding surface, so that the lower tool part 7 has its lower side as a sliding element 23.
  • the sliding element 23 on the tool upper part 9 serves to support the metal plate 10 during the machining process and to hold it on the lower tool part 7.
  • the side of the tool lower part 7 having the roller body 17, which faces the metal plate 10 is designed as a sliding surface, so that the upper side of the tool lower part 7 forms a sliding element 23.
  • the sliding elements 23 on the lower tool part 7 are provided in order to avoid damage to the moving metal plate 10 by the lower tool part 7 in which the rolling element 17 is mounted.
  • the tool 6 shown in FIG. 3 differs from the tool 6 shown in FIG. 2 in that the rolling body 17 in this embodiment is mounted in the first rotary bearing 18 in the tool upper part 9. Further, here, instead of the bearing bush as the one sliding element 23, two separately arranged sliding elements 23 are shown in the lower tool part 7 for supporting the metal plate 10. Alternatively, only one sliding element 23 or more than two sliding elements 23 in the lower tool part 7 is possible. In the tool upper part 9 are on one of the metal plate 10 side facing two sliding elements 23 for
  • the rolling body 17 also has the section 20 in the embodiment shown in FIG. 3 and is inserted and supported with the correspondingly adapted bearing section in the second rotary bearing 22 in the lower tool part 7.
  • the portion 20 of the rolling body 17 in the various embodiments of the tool 6 serves to roll along an end face 25 of the sheet metal plate 10.
  • the rolling body 17 is positioned in a working position such that a plane on the upper side and a plane on an underside of the sheet metal plate 10 intersect the rolling body 17 in a cylindrical portion 32 of the portion 20.
  • the end face 25 of the metal plate 10 is formed at right angles to its top and bottom. Alternatively, it is also possible to reshape the end face into a different angle than the right angle or to produce a special contour of a cross section of the end face 25.
  • the end face 25 of the sheet metal plate 10 is a cutting edge of an opening 31 which has been punched out inside the sheet metal plate 10. Unless the opening
  • the cutting edge 25 may also be an outer edge of the sheet metal plate 10.
  • Fig. 4 shows an embodiment of the tool 6, in which the rolling body 17 is mounted only on one side.
  • the first pivot bearing 18 is provided for supporting the rolling body 17. This is sufficient compared to a two-sided storage, provided that no large lateral forces are applied to the roller body 17.
  • the first pivot bearing 18 is provided in the tool lower part 7, but may alternatively also be provided in the tool upper part 9.
  • the rolling body 17 also has the section 20 in this embodiment. In the section 20, the rolling body 17 has a first conical portion 26 and the cylindrical portion
  • the first conical portion 26 is disposed axially at a first end of the cylindrical portion 32 and has a tapered surface facing the cylindrical portion 32.
  • a length of the cylindrical portion 32 and the axial dimensions of the first conical portion 26 are selected depending on a thickness of the metal plate 10 so that one of the levels on the top or on the underside of the metal plate 10 in the working position of the tool 6 roll body 17 intersects the cylindrical portion 32 and the other of the planes intersects the rolling body 17 in the first conical portion 26.
  • the sliding element 23 is designed as a ball.
  • the sliding element 23 is arranged offset radially with respect to the rolling body 17 so that the metal plate 10 is supported laterally next to the rolling body 17 on the sliding element 23.
  • the rolling body 17 of the tool 6 is arranged in the tool lower part 7.
  • the rolling body 17 has the first conical portion 26 at the first end of the cylindrical portion 32.
  • the rolling body 17 has a second conical section 27 at a second end of the cylindrical region 32 which is axially opposite the first end.
  • An axial length of the cylindrical portion 32 and the axial dimensions of the first conical portion 26 and the second conical portion 27 are selected depending on the thickness of the metal plate 10 so that in the working position. tion of the tool 6, the planes on the top and the bottom of the metal plate 10, the conical sections 26, 27 intersect.
  • the tool 6 shown in FIG. 6 has a roller body 17 as shown in FIG. 4 in the lower tool part 7.
  • the lower tool part 7 has an ejector 28 in this embodiment.
  • the ejector 28 is movable in a direction of the rotation axis 19 of the rolling body 17.
  • Springs 30 are provided in the tool base 7 to urge the ejector 28 into an extended position in a rest position so that the roller 17 does not protrude above the ejector 28 and allow the ejector 28 to spring into a retracted position such that the roller body 17 protrudes beyond the ejector 28 and the cylindrical portion 20 can roll on the end face 25 of the metal plate 10.
  • the ejector 28 is further provided with separate sliding elements 23. Alternatively, no separate sliding members 23 are provided, but an upper surface of the ejector 28 is formed as a sliding member 23.
  • the underside of the upper tool part 9 is also provided with a plurality of additional sliding elements 23, wherein also here only an additional sliding element 23 or the formation of the underside of the upper tool part 9 as the sliding element 23 is possible.
  • Fig. 7 shows a one-piece embodiment of the tool 6 with a rolling body 17 with two conical sections 26, 27.
  • the tool shown in Fig. 7 is not intended for flattening or embossing Nibbelmarken, but for the formation of a chamfer on the edge of Therefore, in this embodiment, a cylindrical portion is not necessarily provided on the rolling body 17.
  • the tool 6 has on the sheet metal plate 10 side facing the first pivot bearing 18.
  • the axis of rotation 19 of the pivot bearing 18 is arranged perpendicular to the surface of the metal plate 10.
  • the rolling body 17 is mounted in the first pivot bearing 18 so that the axis 21 of the rolling body 17 also coincides here with the axis of rotation 19 of the first pivot bearing 18.
  • the rolling body 17 projects in the direction of the metal plate 10 from the tool 6.
  • the rolling body 17 has the first conical portion 26 and the axially offset second conical portion 27, wherein the conical surfaces of the conical portions 26, 27 each other are facing.
  • a section between the conical sections 26, 27 is not absolutely necessary and can, if present, be of any desired shape as long as it does not touch the end face 25 of the metal plate 10 in the working position.
  • the distance between the conical section 26, 27 is selected so that, in the working position, the plane on the upper side of the metal plate 10, the rolling body 17 in one of the conical sections 26, 27 and the plane on the underside of the metal plate 10 in the other of the conical sections 26, 27 intersects.
  • the rolling body 17 of the embodiment shown in Fig. 7 may alternatively be provided in the lower tool part.
  • the sliding elements 23 are provided in those tool parts 7, 9, which do not contain the rolling body 17, in order to support the workpiece 10 during the forming so that it is held on the tool part with the rolling body and can not move away from it.
  • the slide members 23 on the tool parts 7, 9 containing the rolling body 17 serve to prevent damage to the surface of the workpiece 10 by scratching.
  • the sliding elements 23 may be provided with crowned or flat rigid sliding surfaces. Alternatively, the sliding elements 23 may also be equipped with movable sliding bodies, such as balls or barrel rolling bodies, or be designed as spherical pressure pieces.
  • the plate-shaped workpiece 10 is first provided in the punching machine 1 on the machine table 11.
  • the tool part 7, 9, in which the rolling body 17 is arranged, but no scraper is provided is driven by the plunger drive or the drive of the lower tool holder 5 in the Z direction in the working position and the Häposi- tion, ie the height position of the upper tool holder 8 or the lower tool holder 5 is maintained during processing.
  • the planes on the upper side and the lower side of the sheet metal plate 10 provided in the punching machine 1 intersect either the cylindrical region 32 of the rolling element 17 (FIGS. 2, 3), both the cylindrical region 32 and the first conical section 26 ( Figure 4), or the first conical section 26 and the second conical section 27 ( Figures 5, 7).
  • the tool part 7, 9, in which the rolling body 17 is not arranged moved by the plunger drive or the drive of the lower tool holder in the Z direction so that the sliding member 23 or the sliding elements 23 of this tool part on the metal plate 10th lie or are positioned at a small distance from it. This position is then retained during editing.
  • the tool part 9 in which the rolling body 17 is not disposed, is moved to a corresponding position, so that this tool part 9, the sheet metal plate 10 raises or lowers, so that the scraper 28 is pushed back and the rolling body 17 comes into the working position.
  • the sheet metal plate 10 is moved by the workpiece moving device 16 on a predetermined path, so that the roller body 17 rolls on the end face 25 of the metal plate 10 with a predetermined overlap.
  • the roller body 17 penetrates into the material of the sheet metal plate and thereby deforms the end face 25 of the sheet metal plate 10, the sheet metal plate 10 possibly being placed on the plate
  • Metal plate 10 penetrates when a machining result is insufficient.
  • the predetermined path can be selected such that the processing result, namely smoothing or deburring of the end faces or attachment of a chamfer or a radius, or alternatively, generating a predetermined dimension of the metal plate 10 or the punched opening 31 within the
  • Sheet metal 10 is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un outil (6) destiné à une poinçonneuse (1) pour usiner une face frontale (25) d'une pièce (10) en forme de plaque. L'outil (6) comprend un premier élément d'outil (7, 9). Dans le premier élément d'outil (7, 9), un coussinet de pivotement (18) pourvu d'un axe de rotation (19) perpendiculaire à un côté supérieur de la pièce (10) est prévu sur un côté dirigé vers la pièce (10) et un corps de roulement (17) est monté à rotation libre dans le premier coussinet de pivotement (18). Le corps de roulement (17) comporte une partie (20) qui fait saillie du premier élément d'outil (7, 9) en direction du second élément d'outil (7, 9) et qui est conçu pour rouler le long de la face frontale (25) de la pièce (10) et la déformer.
EP15735888.8A 2015-06-30 2015-06-30 Outil pour poinçonneuse et procédé d'usinage d'une face frontale d'une pièce en forme de plaque Withdrawn EP3288696A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/064819 WO2017000989A1 (fr) 2015-06-30 2015-06-30 Outil pour poinçonneuse et procédé d'usinage d'une face frontale d'une pièce en forme de plaque

Publications (1)

Publication Number Publication Date
EP3288696A1 true EP3288696A1 (fr) 2018-03-07

Family

ID=53539669

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15735888.8A Withdrawn EP3288696A1 (fr) 2015-06-30 2015-06-30 Outil pour poinçonneuse et procédé d'usinage d'une face frontale d'une pièce en forme de plaque

Country Status (3)

Country Link
EP (1) EP3288696A1 (fr)
CN (1) CN107735189A (fr)
WO (1) WO2017000989A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107649573A (zh) * 2017-08-23 2018-02-02 中国第汽车股份有限公司 适用于冲压自动化生产线的气动冲孔模具
CN113523088A (zh) * 2021-08-05 2021-10-22 一汽解放汽车有限公司 一种冲孔定位加工装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB613486A (en) * 1945-06-26 1948-11-29 Glenn L Martin Co Improvements in or relating to a dimpling tool
DE3806025A1 (de) * 1988-02-26 1989-08-31 Wf Maschinenbau Blechformtech Vorrichtung zur vorbehandlung von ronden
DE102004020483A1 (de) * 2004-04-26 2005-11-17 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Werkzeug, Maschine sowie Verfahren zum Entgraten von Schnittkanten an Werkstücken
JP5427491B2 (ja) * 2009-07-02 2014-02-26 株式会社アマダ バリ除去方法及び装置
JP6035174B2 (ja) * 2012-10-04 2016-11-30 株式会社アマダホールディングス バリ除去装置

Also Published As

Publication number Publication date
WO2017000989A1 (fr) 2017-01-05
CN107735189A (zh) 2018-02-23

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