EP0798133A2 - Outil de marquage - Google Patents

Outil de marquage Download PDF

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Publication number
EP0798133A2
EP0798133A2 EP97105253A EP97105253A EP0798133A2 EP 0798133 A2 EP0798133 A2 EP 0798133A2 EP 97105253 A EP97105253 A EP 97105253A EP 97105253 A EP97105253 A EP 97105253A EP 0798133 A2 EP0798133 A2 EP 0798133A2
Authority
EP
European Patent Office
Prior art keywords
tool
marking
marking tool
tool holder
embossing unit
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Withdrawn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
EP97105253A
Other languages
German (de)
English (en)
Other versions
EP0798133A3 (fr
Inventor
Karl Bauch
Luis Obermeier
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.)
Iobb Produktideen Vorausentwicklung und Problemlosungen GmbH
Original Assignee
Iobb Produktideen Vorausentwicklung und Problemlosungen 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 Iobb Produktideen Vorausentwicklung und Problemlosungen GmbH filed Critical Iobb Produktideen Vorausentwicklung und Problemlosungen GmbH
Publication of EP0798133A2 publication Critical patent/EP0798133A2/fr
Publication of EP0798133A3 publication Critical patent/EP0798133A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B44B5/026—Dies

Definitions

  • the invention relates to a marking tool for marking workpieces which are produced on numerically controlled processing machines, in particular milling machines and processing centers with an automatic tool changer.
  • laser marking machines are increasingly being used, which, however, require a separate workplace in addition to the processing machine. Even if laser marking is carried out in the test and control room, additional work is required since the workpiece produced must be aligned accordingly. In addition, assignment errors can still occur between the workpiece produced and the workpiece then identified, in particular due to confusion during transport from the processing machine to the testing and / or marking machine.
  • the object of the invention is to create a marking tool for NC processing machines with which the marking and labeling of workpieces is simplified and made more secure.
  • the proposed marking tool enables automatic labeling of workpieces directly on the NC processing machine, since the marking tool can be exchanged by means of a tool changer, which is usually present anyway, and can be actuated by spindle feed. This eliminates a separate workstation for labeling, so that the lead time can be reduced and the manufacturing effort can be minimized.
  • complete machining of workpieces is possible directly on the machining center, especially in connection with exchangeable probes, so that the logistics is simplified, in particular separate clamping operations can be omitted and thus a mix-up of the identification assigned to the respective workpiece on the transport path is excluded.
  • the striking spring of the marking tool is pretensioned by the spindle feed of the NC processing machine, an exact contact of the marking tool on the workpiece surface to be marked being achieved at the same time.
  • this feed movement allows the embossing unit, e.g. B. a number.
  • the stroke is triggered, whereby a constant embossing or marking pressure is achieved due to the spring preload. In combination with the exact alignment and the constant impact energy, this results in a clean appearance, so that the use of otherwise often common nameplates can be largely avoided.
  • the preload of the marking tool or the associated impact piece which can be achieved by the spindle stroke can also be set, so that the impact energy of the embossing unit can be variably adapted to the workpiece or its material to be labeled.
  • This setting is preferably carried out by means of a screw inserted centrally in the tool holder, in particular a holding cone. This setting can also be controlled directly in the tool magazine before changing the marking tool or made manually. It should be noted that in addition to use in metal-cutting machine tools, the marking tool can also be used for the labeling of signs or sheets and the like in connection with machines of non-cutting production.
  • the tool holder 1 shows a marking tool for marking workpieces, the main components of which are a tool holder 1 designed here as a steep taper, a connecting screw 2 inserted therein and an embossing unit 15 pointing here to the right.
  • the tool holder 1 hereinafter referred to as the holding cone in this preferred example, is inserted into the machining spindle 8 of a machine tool, preferably by means of a tool changer (not shown in more detail) which engages on a conventional grip groove of the holding cone 1.
  • a positioning element 1b preferably in the form of a flattened portion (cf. FIG. 2), is provided on the receiving cone 1 in order to enable an angular positioning with respect to the longitudinal axis of the marking tool.
  • connecting screw 2 inside the receiving cone 1 through the left hole here for the Clamping device 1c is accessible, so that the effective length of the connecting screw 2 can be changed as a result, since an assigned nut 12 for the connecting screw 2 is rotatably mounted within the marking tool.
  • a striking spring 3 and a contact spring 4 are provided around the connecting screw 2, the function of which is described in connection with FIGS. 3 and 4.
  • the insertion cone 1 is inserted into the work spindle 8 of the machine tool, a pin 5 is pushed in the direction of the longitudinal axis to the tool head forming the embossing unit 15.
  • a compensating spring 6 presses a shift lever 16 of the embossing unit 15 forward via a shift bolt 7 mounted therein.
  • the indexing can be carried out not only by the telescopic pin 5, which engages the spindle plane surface, but also in the context of the prestressing process or the embossing stroke sequence.
  • the embossing unit 15 can also be associated with company logos or other embossing stamps attached by screwing or plug connection.
  • FIG. 2 shows a half-section representation of the marking tool rotated by 90 °, from which the design of the gripper groove 1a for the tool changer of the processing machine (not shown in more detail) and the positioning element 1b in the form of a flattening for the angular positioning of the receiving cone 1 with respect to the processing spindle 8 can be seen is.
  • the arrangement of the pin 5 and the switching pin 7 is also shown, as is the embossing unit 15, which here consists of six embossing disks 18 and is interchangeably fastened to a bearing sleeve 14 with countersunk screws 17.
  • the marking tool with its receiving cone 1 is inserted into the machining spindle 8, so that the embossing unit 15 of the marking tool is moved to the desired location by corresponding XYZ movement in the coordinate axes of the numerically controlled processing machine.
  • This position on an embossing surface A is programmed as position data in the NC or CNC control, for example on a corner area of a previously milled surface, so that the embossing disks 18 of the embossing unit 15 rest against this surface A.
  • the axial feed of the machining spindle 8 pushes the marking tool together, since the embossing unit 15 with the bearing sleeve 14 can telescopically move towards the receiving cone 1 via the connecting screw 2.
  • the bearing sleeve 14 takes an impact piece 13 during this relative movement with respect to the receiving cone 1, this impact piece 13 being simultaneously guided within the receiving cone 1.
  • This substantial axial relative movement between the receiving cone 1 and the embossing unit 15 prestresses the compression springs 3, 4 and 6, since the embossing unit 15 bears against the embossing surface A, while the work spindle 8 moves towards the embossing surface A and the receiving cone 1 over it Striker 13 and the bearing sleeve 14 is slipped.
  • This numerically controlled telescoping or pushing together process ends after a cylindrical pin 11 engages in a bore 13b, since the cylindrical pin 11 is acted upon by a compression spring 16 supported on a threaded pin 9.
  • the bore 13b is arranged centrally in an axial groove 13a of the striking piece 13.
  • a guide lug 14a with a ramp 14b can also move in this axial groove 13a, as will be explained in more detail in connection with FIG. 4.
  • the relatively soft compression spring 6 compensates for the difference in distance between the pin 5 and the shift lever 16 of the embossing unit 15 via the switching bolt 7.
  • the impact spring 3 is thus compressed by this feed amount and thus biased, since in this compressed locking position of the marking tool, the locking piece 11 into the bore 13b of the striking piece 13 engages. As a result, the striking piece 13 is locked with respect to the receiving cone 1.
  • the feed movement of the machining spindle 8 is reversed, i. H. the machining spindle is moved away from the embossing surface A according to the arrow Z.
  • the embossing unit 15 remains in contact with the embossing surface A, since the contact spring 4 follows this return movement of the machining spindle 8, that is to say moves the bearing sleeve 14 back into the extended state.
  • the striking spring 3 remains tensioned, however, since the striking piece 13 is held by the engagement of the locking piece 11 in the radially aligned bore 13b close to the tool holder, here the holding cone 1, as shown in FIG. 4.
  • the ramp 14b Towards the end of the return movement according to the arrow Z, the ramp 14b approaches the locking piece 11 and presses it radially outwards, as is shown in FIG. 4. As a result, the locking of the striking piece 13 is released, so that the prestressed striking spring 3 can suddenly relax and the striking piece 13 accelerates until it strikes the spaced bearing sleeve 14. This kinetic energy of the relatively heavy hammer 13 is transmitted to the embossing unit 15 via the bearing sleeve 14, so that its embossing disks 18 strike the previously set characters (letters or numbers) on the embossing surface A at a defined point.
  • the marking tool After the marking tool has moved back further from the embossing surface A on the workpiece, the marking tool is then automatically changed back into the tool magazine. If, however, several workpieces are to be marked one after the other, as is the case with multiple clamping of basically the same workpieces, the stamping unit 15 can be switched on by immediately reinserting the marking tool. Likewise, a suitable position for compressing the marking tool and to be started to actuate the shift lever 16 to advance the embossing unit 15.
  • the embossing unit 15 can be rotated about the longitudinal axis by a certain angle (for example 90 °) with respect to the receiving cone 1, if it is applied in the vertical direction with a horizontally running sequence of numbers or letters compared to the position shown here shall be. This twisting can be necessary in particular if the machine tool spindle has only one characteristic position.
  • machine tools are also used in which the rotational position of the machining spindle 8 can be positioned as desired using the numerical control and can be determined in degrees. In this case, the positioning of the identification line (e.g. from horizontal to vertical) can be carried out by rotating the processing spindle 8 by 90 ° or 270 °.
  • the above-mentioned twisting movement of the embossing unit 15 with respect to the receiving cone 1 can be carried out in a simple manner by the preferred construction by means of the central connecting screw 2.
  • the nut 12 assigned to the connecting screw 2 is in this case arranged in a rotationally fixed manner within the bearing sleeve 14, so that the head of the connecting screw 2 can be reached from the left end of the receiving cone 1 here, for example with a socket wrench.
  • the connecting screw 2 By turning the connecting screw 2, the distance between the screw head of the connecting screw 2 and the nut 12 can also be changed so that the biasing and working travel of the striking spring 3 can be adjusted.
  • the impact energy acting on the embossing unit 15 can thus also be set via this change in the prestressing path of the striking spring 3.
  • the embossing depth can thus be adapted to different conditions, in particular the material quality of the material.
  • the marking tool can also be exchanged in a quick-action chuck or a quill of a tailstock of a lathe.
  • the tool holder 1 can also have a cylindrical shank holder or a polygonal holder instead of the holding cone described here, or it can be designed as a hollow cylinder shank (e.g. according to DIN 69663 or 69893).

Landscapes

  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP97105253A 1996-03-27 1997-03-27 Outil de marquage Withdrawn EP0798133A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19612181 1996-03-27
DE1996112181 DE19612181C2 (de) 1996-03-27 1996-03-27 Kennzeichnungs-Prägewerkzeug

Publications (2)

Publication Number Publication Date
EP0798133A2 true EP0798133A2 (fr) 1997-10-01
EP0798133A3 EP0798133A3 (fr) 1999-11-17

Family

ID=7789635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105253A Withdrawn EP0798133A3 (fr) 1996-03-27 1997-03-27 Outil de marquage

Country Status (2)

Country Link
EP (1) EP0798133A3 (fr)
DE (1) DE19612181C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021109962A1 (de) 2021-04-20 2022-10-20 Lang Technik Gmbh Verfahren und Vorrichtung zum Anbringen einer Spannstruktur an einem Werkstück

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1161913A (fr) * 1956-11-29 1958-09-08 Mermet & Virthner Ets Perfectionnements aux dispositifs d'outils à frappe automatique
DE1939455A1 (de) * 1969-08-02 1971-02-11 Zahnradfabrik Friedrichshafen Vorrichtung zum Bezeichnen von Werkstuecken
US4129188A (en) * 1976-03-10 1978-12-12 El Souessi Monti Impact device for marking, punching, stamping, forming, riveting and other related operations
GB2028723A (en) * 1978-08-22 1980-03-12 Cunningham Co M E Marking apparatus and methods of controlling the movement of marking indicia of a marking apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1314405A (en) * 1970-09-03 1973-04-26 Zahnradfabrik Friedrichshafen Devices for marking metal workpieces
DE3136204A1 (de) * 1981-09-12 1983-03-31 Willi 5810 Witten Lipp Vorrichtung zum verstellen eines rotierenden werkzeuges

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1161913A (fr) * 1956-11-29 1958-09-08 Mermet & Virthner Ets Perfectionnements aux dispositifs d'outils à frappe automatique
DE1939455A1 (de) * 1969-08-02 1971-02-11 Zahnradfabrik Friedrichshafen Vorrichtung zum Bezeichnen von Werkstuecken
US4129188A (en) * 1976-03-10 1978-12-12 El Souessi Monti Impact device for marking, punching, stamping, forming, riveting and other related operations
GB2028723A (en) * 1978-08-22 1980-03-12 Cunningham Co M E Marking apparatus and methods of controlling the movement of marking indicia of a marking apparatus

Also Published As

Publication number Publication date
DE19612181A1 (de) 1997-10-09
EP0798133A3 (fr) 1999-11-17
DE19612181C2 (de) 2000-07-20

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