EP0952008A2 - Procédé, dispositif et outil de pression pour la production des marquages - Google Patents

Procédé, dispositif et outil de pression pour la production des marquages Download PDF

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Publication number
EP0952008A2
EP0952008A2 EP99107239A EP99107239A EP0952008A2 EP 0952008 A2 EP0952008 A2 EP 0952008A2 EP 99107239 A EP99107239 A EP 99107239A EP 99107239 A EP99107239 A EP 99107239A EP 0952008 A2 EP0952008 A2 EP 0952008A2
Authority
EP
European Patent Office
Prior art keywords
sheet
pressure forming
forming tool
sheet metal
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.)
Withdrawn
Application number
EP99107239A
Other languages
German (de)
English (en)
Other versions
EP0952008A3 (fr
Inventor
Mahmoud Al-Obaidi
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.)
Gerhard Flemming & Hermann Pehrsson GmbH
Original Assignee
Gerhard Flemming & Hermann Pehrsson GmbH
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 Gerhard Flemming & Hermann Pehrsson GmbH filed Critical Gerhard Flemming & Hermann Pehrsson GmbH
Publication of EP0952008A2 publication Critical patent/EP0952008A2/fr
Publication of EP0952008A3 publication Critical patent/EP0952008A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0004—Machines or apparatus for embossing decorations or marks, e.g. embossing coins characterised by the movement of the embossing tool(s), or the movement of the work, during the embossing operation
    • B44B5/0019—Rectilinearly moving embossing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/008—Machines or apparatus for embossing decorations or marks, e.g. embossing coins in layered material; connecting a plurality of layers by embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0095—Machines or apparatus for embossing decorations or marks, e.g. embossing coins using computer control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/022—Devices for holding or supporting work

Definitions

  • the invention relates to a method for marking deep-drawable sheets according to the preamble of claim 1 and a tool and a device to carry out the procedure.
  • the tool tip of the pressure forming tool penetrating into the workpiece surface which is solid at least in the penetration area, is a two-stage cone formed with a tip angle of 160 °. For the subsequent one frustoconical area, a cone angle of 100 ° is provided.
  • the summit the tool consists of a hard metal alloy.
  • Damage to the coating is found by investigations by the inventors apparently caused by the fact that using the known method on the Surface layer impermissibly high friction forces and resulting tensile and Shear stresses occur and the process is somewhat chipping Forming process represents. This will tear open the surface coating and partially removed. Material cold welding occurs on the tool tip on the one hand, which lowers the quality of the marking and the likelihood of damage to the surface layer further increased and on the other hand the tool life is reduced.
  • the invention is therefore based on the object of a method of the beginning mentioned type and a tool and a device for performing the Procedure to indicate the creation of a sharply contoured marking Allow on a coated sheet without damaging the coating.
  • the invention includes the knowledge that when marking the surface of a coated sheet with a solid tool has a sharp contour achieved and damage to the surface layer can be avoided can, if by appropriate training and type of exposure of the A deep drawing-like forming process is realized and the essentially frictional forces acting tangentially to the sheet surface and resulting from it Tension and shear effects are limited.
  • the sheet is held in a sheet holding device in particular in such a way that from its shape and material elasticity and an optionally given Elasticity of the bracket itself the penetration and displacement of the
  • Pressure forming tool counteracting counterpressure force with predetermined Normal and tangential components result. This is advantageous the layer binding forces are exceeded even when force peaks occur with tool feed (for example when changing direction with very small radii etc.) prevented.
  • the process becomes such when marking a coated sheet trained pressure forming tool used that the labeling with a almost ideal deep-drawing-like forming process, in which the coating forming material is only plastically deformed and at least in Partial areas is compressed.
  • the coefficient of sliding friction between the tool tip and the sheet surface below one for the concrete material properties of the sheet to be determined limit.
  • the proposed processing method is particularly for sheet metal or Shaped sheet metal parts cheap, which is a relative for reasons of corrosion protection wear a thin coating, such as zinc, if damaged, a Formation of local corrosion nests is inevitable.
  • a sheet metal holding device used in accordance with the method makes it possible to do this characteristic sheet metal part to exert a counterforce, that of the introduction of force counteracts from the pressure forming tool on the sheet surface.
  • the Power flow is from the positioning device of the pressure forming tools on the Sheet metal part and the sheet metal holding device either over a frame or over a Foundation closed. If the power flow is closed via a frame, then preferably a structural connection between the sheet metal holding device and the pressure forming tool available. On the other hand, the flow of power over the The foundation is closed, so there is a complete or partial structural separation conceivable between the sheet metal holding device and the pressure forming tool.
  • the pressure forming tool used according to the invention has one in the Surface of the sheet penetrating polished tool tip that at least Solid and one-piece in the penetration area and as a two-stage cone with one circular conical end region is formed, to which a frustoconical Section joins.
  • sheet metal becomes a tip angle of the circular cone of 115 to 120 ° or a ratio of this angle to the cone angle of the truncated cone in the area suggested between 1.0 and 1.3.
  • the tool is not required during the marking of the sheet metal part according to the x-y direction of movement of the Rotate pressure forming tool.
  • the tool tip has a Surface which is polished using a fine-grain grinding paste has been.
  • the choice of material for the tool tip depends on the Strength properties of the sheet in the surface area, since with the invention coated workpieces can also be marked, their base material has different material properties than their coating.
  • the invention includes, depending on the field of application of the device, coated and uncoated tool tips made of high-alloy tool steels Hard metals, from cermets made from ceramic materials, from cubic crystalline Boron nitride (CBN) and made of diamond.
  • there is a material for the tool tip Carbide alloy provided.
  • hard metals are iron-free, on powder metallurgical Called composite materials produced by sintering, which have metal carbides that softer as hard material particles in a matrix Binding metal are stored. This gives the tool material - under the Prerequisite that the tip is polished - a favorable for the machining task Property profile.
  • the device provided for carrying out the method has one Positioning device having degrees of freedom and a sheet metal part against a sheet metal holding device protecting against the pressure forming tool on.
  • the positioning device realizes the relative movements between the active partners pressure forming tool and sheet metal part in a known per se Way through rotary and / or translatory movements. As an active movement becomes the relative movement during the contact or intervention of the active partners designated.
  • the positioning device preferably has at least three degrees of freedom, around the relative movements normal (z direction) and parallel (x and y direction) to realize the surface of the sheet metal part. But it is common advantageous, the pressure forming tool more than three degrees of freedom to deliver. Aligning the tool axis with the normal vector on Working point on a curved sheet metal surface preferably requires a Tilting of the pressure forming tool around the x and / or y axis and possibly a Fine control of the feed rate by one (even for a short time) Prevent exceeding the allowable frictional forces.
  • the invention does not limit the active and positioning movements Movements of the pressure forming tool alone, but are executions possible, in which one or more degrees of freedom by movements of the Sheet metal part can be realized.
  • the device according to the invention has a control unit, which the User input - including, in particular, material parameters of the sheet metal coating composite - Used to control the positioning device and thus the speed and position of the tool tip relative to the Sheet metal part controls.
  • the preferred embodiment of the invention provides one in the form and / or size of the Sheet metal part adapted sheet metal holding device in front of a predetermined tolerances excessive deflection of the sheet metal part compared to the pressure forming tool prevent and still ensure a certain elasticity.
  • the Sheet metal holding device enables the sheet metal part to exert a counterforce, the force of the pressure forming tool on the surface of the sheet metal part is opposite.
  • the power flow is from the positioning device about the pressure forming tool, the sheet metal part and the sheet metal holding device either closed on a frame or on a foundation. Will the Power flow closed over a frame, so is preferably a structural Connection between the sheet metal holding device and the pressure forming tool available. If, on the other hand, the flow of force over the foundation is closed, then a complete or partial structural separation between the sheet metal holding device and the pressure forming tool conceivable.
  • the weight of the Device used to create a friction and / or positive connection between the sheet metal holding device and the sheet metal part.
  • the mass the device is dimensioned so that when the device is placed on the To be marked point of the sheet metal part, a flow of force over the frame is possible becomes.
  • a handling device enables which preferably has several degrees of freedom, Relative movements between the pressure forming tool and the sheet metal part, the introduction of the pressure forming tool to the one to be marked Serve surface area of the sheet metal part.
  • the advantages of a handling device lie in flexible and automated workpiece identification.
  • the Use of a handling device is not limited to just one Position the pressure forming tool relative to the fixed sheet metal part
  • the invention also includes further variants, in which with the help of a Handling device the sheet metal part is moved.
  • the invention relates to the positioning device Drives and motor axles, preferably for the drives
  • Three-phase stepper motors are used by means of a toothed belt drive are coupled to the motor axes assigned to them.
  • the positioning devices which work with stepper motors have the advantage that they are without a additional measuring system and the associated signal feedback operated can be, since a stepper motor is known to be both a motor and a measuring device is.
  • a three-phase stepper motor has the opposite of a two-phase stepper motor Advantage of a higher angular resolution and thus a higher positioning accuracy.
  • Timing belts have the advantage that they have a positive transmission of motion guarantee maintenance-free and without slippage and are therefore preferred suitable for phase-accurate transmissions.
  • the invention is not restricted only on the described drive of the positioning device, but also closes Axle motors with a different design.
  • the device shown in Figure 1 is used to create a tamper-proof Marking in the surface area of a thin coating Sheet 1 by means of a pressure forming tool 2.
  • the pressure forming tool 2 which is shown in detail in Figure 2, has a cylindrical body one tool tip 3, 3 'at each end, which is shown as detail Z in FIG is shown in Figure 3.
  • the tool tip 3 is solid and in one piece and has the shape of a two-stage cone, which is a composite geometric body a straight circular cone 3.1 and a straight circular truncated cone 3.2 with different tip angles is to be understood.
  • the sectional area of the circular truncated cone 3.2 coincides with the base area of the Circular cone 3.1 and has a diameter of 8 mm with a shaft thickness from 0.6 mm.
  • a value of is for the apex angle of the circular cone 3.1 120 °, for the cone angle of the circular truncated cone 3.2 a value of 100 ° intended.
  • the two-stage cone has a polished surface 3.3. The Polishing is done using a low grain abrasive paste, where the roughness depth R has a value ⁇ 0.1 ⁇ m.
  • Such a tool is used for marking with a deep-drawing-like one Forming process in which the material forming the coating exclusively plastically deformed and compressed at least in some areas.
  • the Polishing ensures a very small coefficient of friction between the tool tip and the sheet metal surface to be marked, so that the deformation-related Shear and compression load on the coating material cutting deformation is avoided.
  • the device shown in FIG. 1 has a shape of the sheet 1 adapted sheet metal holding device, the sheet 1 by a force holds against a foundation 5 in the position shown.
  • the sheet 1 is at the embodiment of the sheet metal holding device shown in Figure 1 by a Angle 4.1, a support body 4.2 and a hydraulically operated Stamp 4.3 by means of positive and frictional engagement on a dodge compared to Pressure forming tool 2 prevented.
  • the form fit that is already part of the Restricts degrees of freedom of the sheet 1 takes place by the shape of the sheet adapted elbow 4.1, while by the hydraulically operated punch 4.3 a frictional engagement takes place via a force.
  • the device shown in Figure 1 has a positioning device that by means of translational displacements parallel to the axes of a right-angled one spatial Cartesian coordinate system the spatial position and the Movement of the pressure forming tool 2 relative to the fixed sheet 1 defines.
  • the positioning device has three sliding carriages 6, 7, 8 which corresponding slide guides and drives according to the one of a Operating computer executed control unit 9 signals are moved.
  • the Control unit controls the positioning device by means of the user entered data (especially data on the permissible feed rate) and by means of a proximity sensor which measures the distance of the tool tip 3 from the surface of the sheet 1 determined.
  • the signal of the sensor results from an electrical capacitance between the tool tip 3 and the sheet metal part 1.
  • FIGS. 2 and 3 3 show the deformations in the coating 1.1 and the structural distortions 10 in the sheet metal material 1.2 for a coated steel sheet 1, which, when marked with the tool tip shown in FIGS. 2 and 3 3 arise, shown schematically. It can be clearly seen that the Coating 1.1 has only been deformed plastically and therefore non-destructively is. At the same time, the structural distortion 10 extends in the carrier material 1.2 to below the visible deformation in the surface area. This allows the Identification can be proven to be tamper-proof even if it is has been removed by machining the marking area.
  • FIG. 5 shows an embodiment in which a coated sheet metal part 11 by means of a sheet metal holding device 12.1, 12.2 designed as a two-armed gripper compared to a frame 13 of the device without using the back the counter-support supporting the processing surface is fixed.
  • the sheet metal holding device 12.1, 12.2 has several degrees of freedom and achieves a frictional connection with the plate 11 by means of collets 14.1, 14.2, which are operated as hydraulically Stamp are executed. Which results from the force of the pressure forming tool 15 on the sheet 11 resulting power flow is via the sheet holding device 12.1, 12.2, the frame 13 and closed via a fine positioning device 16 and not passed through a foundation 17.
  • the sheet metal part 11 can therefore be moved freely through the room during the marking process.
  • the frame 13 with the arm having several degrees of freedom is one Handling device 18 connected.
  • the handling device 18 and the adjustable sheet metal holding device 12.1, 12.2 is a flexible identification differently designed sheet metal parts possible.
  • the device shown has a positioning device, whose tasks on a rough positioning device in the form of a handling device 18 and a fine positioning device 16, based on translational, arranged at right angles to each other in space Sled guides are distributed.
  • the handling device 18 enables a relative movement between Pressure forming tool 15 and sheet metal surface, which is the introduction of the pressure forming tool 15 to a non-fixed sheet metal part.
  • the fine positioning device 16 is together with the pressure forming tool 15 on the frame 13 mounted and enables the active and positioning movements of the pressure forming tool 15 compared to the fixed sheet metal part 11.
  • a control unit 19 controls the handling device 18 and the fine positioning device by means of the data entered by the user.
  • FIG. 6 shows an embodiment in which a coated sheet metal part 20 is fixed by means of a force against a foundation 21. Is to a handling device 22 is provided, which after the introduction of the Pressure forming tool 23 on the non-fixed sheet metal part 20, which is used for fixing applies the necessary force to the sheet metal holding device.
  • the sheet metal holding device in this case consists essentially of support plates 24.1 to 24.4, if possible, by means of the normal force acting on the workpiece surface Grippy friction pairings with the sheet metal part 20.
  • the back, with the Foundation 21 connected, the shape of the sheet by means of a rotatable Bearing-adapting bearing surfaces 24.2, 24.4 are part of the sheet metal holding device viewed.
  • the sheet metal part to be identified 28 is made of steel and has a zinc coating. That coated Sheet steel part is by means of an external, structurally by a pressure forming tool 29 separate sheet metal holding device 30.1, 30.2 with respect to the foundation 31 fixed without a backing support supporting the processing surface and is processed with a tool according to FIG. 2 or 3.
  • the sheet metal holding device 30.1, 30.2 is a two-armed gripper with several degrees of freedom built up, the frictional engagement with the sheet metal part 28 via collets 32.1, 32.2 achieved in the form of hydraulically operated stamp.
  • a handling device 33 allows the sheet metal holding device 30.1, 30.2 to have a sheet metal part 28 which is outside the reach of the pressure forming tool 29 lies, then it in its working area opposite the foundation 31st to fix spatially.
  • the pressure forming tool 29 is directly with the arm one second handling device 34 connected, their drives and degrees of freedom are able to withstand the forces and the working movements of the pressure forming tool 29 compared to the fixed sheet metal part 28.
  • This Handling device 34 is therefore to be regarded as a positioning device.
  • a control unit 35 controls both handling devices 33, 34 by means of the user entered data.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Laminated Bodies (AREA)
EP99107239A 1998-04-22 1999-04-14 Procédé, dispositif et outil de pression pour la production des marquages Withdrawn EP0952008A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998118902 DE19818902C2 (de) 1998-04-22 1998-04-22 Verfahren und Druckumformwerkzeug zur Erzeugung einer, insbesondere fälschungssicheren, Kennzeichnung auf einem tiefziehfähigen beschichteten Blech
DE19818902 1998-04-22

Publications (2)

Publication Number Publication Date
EP0952008A2 true EP0952008A2 (fr) 1999-10-27
EP0952008A3 EP0952008A3 (fr) 2003-05-28

Family

ID=7866011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107239A Withdrawn EP0952008A3 (fr) 1998-04-22 1999-04-14 Procédé, dispositif et outil de pression pour la production des marquages

Country Status (2)

Country Link
EP (1) EP0952008A3 (fr)
DE (2) DE19861218B4 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102452270A (zh) * 2010-10-29 2012-05-16 张海洋 天花精雕机
WO2013107485A1 (fr) * 2011-12-20 2013-07-25 Abb Ag Découpe de flasque pré-estampée, élément structural ou partie de boîtier pourvu(e) d'une telle découpe de flasque, armoire électrique ou de distribution dotée d'un tel élément structural ou partie de boîtier, et système et procédé de pré-estampage de découpes de flasques
CN110549776A (zh) * 2019-09-12 2019-12-10 北京蒙奇迪科技发展有限公司 一种标志板固定装置
US10562338B2 (en) * 2018-06-25 2020-02-18 American Crafts, L.C. Heat pen for use with electronic cutting and/or drawing systems

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316730A1 (de) * 1983-05-07 1984-11-08 Bruno 6000 Frankfurt Koller Spezialnummerierung an hydroweichen oder weichen kontaktlinsen
US4506999A (en) * 1983-07-12 1985-03-26 Telesis Controls Corporation Program controlled pin matrix embossing apparatus
US4780009A (en) * 1987-04-27 1988-10-25 Combustion Engineering, Inc. Steam generator tube sheet automatic stamping device
FR2677911A1 (fr) * 1991-06-21 1992-12-24 Therond Marcel Dispositif de marquage par micro-percussion permettant le trace de signes d'identification sur des objets en atmosphere polluee et procede mettant en óoeuvre ce dispositif.
US5368400A (en) * 1993-10-15 1994-11-29 Telesis Marking Systems, Inc. Marking apparatus with cable drive
DE29705745U1 (de) * 1997-03-19 1997-07-24 Gerhard Flemming & Hermann Pehrsson GmbH, 10969 Berlin Kennzeichnungsvorrichtung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102452270A (zh) * 2010-10-29 2012-05-16 张海洋 天花精雕机
WO2013107485A1 (fr) * 2011-12-20 2013-07-25 Abb Ag Découpe de flasque pré-estampée, élément structural ou partie de boîtier pourvu(e) d'une telle découpe de flasque, armoire électrique ou de distribution dotée d'un tel élément structural ou partie de boîtier, et système et procédé de pré-estampage de découpes de flasques
US10562338B2 (en) * 2018-06-25 2020-02-18 American Crafts, L.C. Heat pen for use with electronic cutting and/or drawing systems
EP3810435A4 (fr) * 2018-06-25 2022-03-02 American Crafts L.C. Stylo thermique destiné à être utilisé avec des systèmes de coupe et/ou de dessin électroniques
CN110549776A (zh) * 2019-09-12 2019-12-10 北京蒙奇迪科技发展有限公司 一种标志板固定装置

Also Published As

Publication number Publication date
DE19818902A1 (de) 1999-11-04
DE19818902C2 (de) 2002-09-19
DE19861218B4 (de) 2005-01-20
EP0952008A3 (fr) 2003-05-28

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