EP0248766B1 - Tool for centre-punching and marking work pieces - Google Patents

Tool for centre-punching and marking work pieces Download PDF

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Publication number
EP0248766B1
EP0248766B1 EP87810320A EP87810320A EP0248766B1 EP 0248766 B1 EP0248766 B1 EP 0248766B1 EP 87810320 A EP87810320 A EP 87810320A EP 87810320 A EP87810320 A EP 87810320A EP 0248766 B1 EP0248766 B1 EP 0248766B1
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EP
European Patent Office
Prior art keywords
hollow shafts
center
centre
tool
spacer sleeves
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.)
Expired - Lifetime
Application number
EP87810320A
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German (de)
French (fr)
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EP0248766A3 (en
EP0248766A2 (en
Inventor
am Gütsch AG RESIDENZ
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RESIDENZ AM GUETSCH AG
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am Gütsch AG RESIDENZ
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Priority to AT87810320T priority Critical patent/ATE60268T1/en
Publication of EP0248766A2 publication Critical patent/EP0248766A2/en
Publication of EP0248766A3 publication Critical patent/EP0248766A3/en
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Publication of EP0248766B1 publication Critical patent/EP0248766B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H7/00—Marking-out or setting-out work
    • B25H7/04—Devices, e.g. scribers, for marking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D5/00—Centre punches

Definitions

  • the punctiform or line-like markings in the surface of a workpiece made of metal, wood or plastic are made using a center pin made of hard metal, marking and grainings in holes or on shafts as well as line-like scratches for scribing purposes in slot-like depressions can only be done with great accuracy It takes time and requires manual skill, because it is difficult to quickly and precisely determine the center of holes or the longitudinal center of slots and grooves, which is why errors are common. Removing a broken screw in a workpiece is also cumbersome. The broken screw in the workpiece has to be drilled out and it is usually only possible to determine the center for attaching a drilling tool to carry out the drilling.
  • the invention relates to a tool for graining and marking out workpieces, as it is e.g. is known from US-A-3 192 640.
  • the present invention has for its object to find the center of any cylindrical, conical and stepped holes or the longitudinal center in slots and on shafts safely and quickly to make point or line-like markings in a workpiece surface. By quickly and easily centering on a screw, a pin or a shaft, the cumbersome clamping in a turning unit can be saved.
  • the grain pin 1 denotes a grain pin made of hard metal, which is provided on one end with a tip 2 and on the other hand with a striking head 3.
  • the length of the center pin is approx. 7 cm and the thickness approx.
  • On the grain pin 1 is a group consisting of several pieces telescopically interlocking, displaceable hollow shafts 4 is mounted. Depending on the type of use, fewer or more than seven hollow shafts can be used.
  • the spacer bushings have different widths and diameters from one another.
  • the hollow shafts 4 and the spacers 5 each consist of one piece, but they can also be individual parts which are connected to one another by welding, or are formed from one piece.
  • the widths of the hollow shafts 4 increase from bottom to top by approx. 1 mm each, those of the spacer bushes 5, on the other hand, increase from top to bottom by approx. 1 mm.
  • locking screws 6 are attached to the peripheral sides of the spacers, the heads of which protrude.
  • the spacers 5 can be fixed on the center pin 1 with the hollow shafts 4.
  • a rubber band 7 is placed over part of the locking screws 6 as a traction means and the purpose is to pull the spacers 5 together and to keep the hollow shafts 4 apart when the locking screws 6 are not tightened.
  • the independent dropping of the grain pin 1 during the grain work can be prevented and the tool can be kept in the ready position.
  • the fourth hollow shaft 4 fits into the hole 9, while the remaining larger hollow shafts rest on the workpiece 8. 5, the lock 9 is very small, in FIG. 6, however, it is several times larger.
  • the bottom hollow shaft is where the other hollow shafts are telescoped.
  • the center pin 1 or the tip 2 is located exactly in the center of the hole 9.
  • the spacers 5 lie on top of each other.
  • a hollow shaft 4 surrounds a shaft 8 'and the tip of the grain pin 1 lies against the end face thereof, where the grain is carried out. The same is the case if there is a pin instead of the shaft 8 '.
  • Two hollow shanks 4 resting on the workpiece 8 serve as a right-angled, supporting support, which make it difficult to tilt the tool.
  • the workpiece 8 can lie on a further workpiece 10 shown in FIGS. 8, 9 and 11 and by striking the center pin grains are produced on its surface, which are conical depressions.
  • scribe lines can also be drawn in slots or channels exactly in the longitudinal center thereof. scratch.
  • the lower part of the tool with the center pin 1 with a matching hollow shaft is easy to insert into the slot 9 ', the groove 9 "of the shaft 8' or the pin, the tip 2 automatically taking exactly the longitudinal position shown by dash-dotted lines.
  • longitudinal scribe lines 18 are formed in the slot or in the groove.
  • the intersecting points of the scribe lines in the slots or grooves show the cross points exactly.
  • Fig. 10 are still Four different sized holes 9 are available, the centers of which can be determined quickly and precisely with the tool for the purpose of carrying out granulations.
  • the distance adjuster 12 shown in FIG. 11 is used to create a group of indentations on the workpiece 8 that are equally spaced from one another. have it fixed by means of the clamping screws 17 so that the distance of the center pin 1 can be set and secured precisely. If the feeler pin 16 is inserted into a notch previously produced by the center pin, the center pin 1 assumes a position distant from this. When this process is repeated, with the sensor mandrel being inserted into the newly created notch, a group of uniformly spaced-apart depressions 11 can easily be produced using a conventional pipe tool (FIG. 11a).
  • the tool described is particularly suitable for craftsmen such as mechanics, locksmiths, toolmakers, carpenters and hobbyists who carry out work in which the centers of holes or the longitudinal center of slots and channels, shafts and pins, as well as the cross points of intersecting slots or Channels are to be determined. Drilling out broken screws without risking damage to the thread in the workpiece becomes possible due to the possibility of attaching a centrically accurate grain to the point where the screw breaks off, which acts as an orientation aid when attaching the drilling tool to be used.

Abstract

A tool which has spacer sleeves displaceable on a center punch and hollow shafts are adjacent to one another is intended for rapidly and precisely finding the center of holes and the longitudinal center of slots and channels, so that center marks and linear scribes can be made. The spacer sleeves and the hollow shafts have different diameters, and the hollow shafts are inserted one into the other in telescopic form. When a hollow shaft is fittingly inserted into hole (5) or slot (5) the center of the former or the longitudinal center of the latter can reliably be found by the center punch for making center marks or linear scribes in the slots. The tool can also be used for producing center marks on shafts and pins.

Description

Das Anbringen von punkt- oder linienartigen Markierungen in die Oberfläche eines Werkstükkes aus Metall, Holz oder Kunststoff wird mittels eines Körnerstiftes aus Hartmetall vorgenommen, Markierung und Körnungen in Löcher oder auf Wellen sowie linienartige Ritzungen für Anreisszwecke in schlitzartigen Vertiefungen lassen sich mit Genauigkeit nur mit grossem Zeitaufwand ausführen und erfordern handwerkliches Geschick, denn es ist schwer rasch und genau das Zentrum von Löckern oder die Längsmitte von Schlitzen und Nuten zu ermitteln, weshalb Fehler häufig sind. Eine abgebrochene Schraube in einem Werkstück herauszunehmen ist ebenfalls umständlich. Die im Werkstück steckende, abgebrochene Schraube ist herauszubohren und es gelingt meistens nur ausnahmsweise das Zentrum für das Ansetzen eines Bohrwerkzeuges zur Vornahme der Ausbohrung genau zu ermitteln. Bei Ungenauigkeit wird das Schraubengewinde im Werkstück beim Herausbohren der abgebrochenen Schraube beschädigt, die allfällig reparierte Schraubverbindung wird verunsichert und die neue Schraube passt nicht. Als Ausweg bleibt jeweils nur das Schneiden eines neuen Gewindes im Werkstück und die Verwendung einer passenden Schraube übrig. Ebenfalls schnelles Zentrieren z.B. an einer Schraube erspart das umständliche Einspannen in der Drehmaschine.The punctiform or line-like markings in the surface of a workpiece made of metal, wood or plastic are made using a center pin made of hard metal, marking and grainings in holes or on shafts as well as line-like scratches for scribing purposes in slot-like depressions can only be done with great accuracy It takes time and requires manual skill, because it is difficult to quickly and precisely determine the center of holes or the longitudinal center of slots and grooves, which is why errors are common. Removing a broken screw in a workpiece is also cumbersome. The broken screw in the workpiece has to be drilled out and it is usually only possible to determine the center for attaching a drilling tool to carry out the drilling. If inaccurate, the screw thread in the workpiece will be damaged when the broken screw is drilled out, the repaired screw connection will be unsettled and the new screw will not fit. The only way out is to cut a new thread in the workpiece and use a suitable screw. Also quick centering e.g. One screw saves laborious clamping in the lathe.

Gegenstand der Erfindung ist ein Werkzeug zum Körnen und Anreissen von Werkstücken, wie es z.B. aus der US-A-3 192 640 bekannt ist. Der vorliegenden Erfindung liegt die Aufgabe zugrunde das Zentrum von beliebig gestalteten zylindrischen, konischen sowie abgestuften Löchern oder die Längsmitte in Schlitzen wie auch auf Wellen sicher und rasch zu finden, um in einer Werkstückoberfläche punkt- oder linienartige Markierungen anzubringen. Durch schnelles und leichtes Zentrieren an einer Schraube, einem Zapfen oder einer Welle lässt sich ferner das umständliche Einspannen in einem Drehaggregat ersparen.The invention relates to a tool for graining and marking out workpieces, as it is e.g. is known from US-A-3 192 640. The present invention has for its object to find the center of any cylindrical, conical and stepped holes or the longitudinal center in slots and on shafts safely and quickly to make point or line-like markings in a workpiece surface. By quickly and easily centering on a screw, a pin or a shaft, the cumbersome clamping in a turning unit can be saved.

Erfindungsgemäss wird diese Aufgabe durch die im Kennzeichen des Patentanspruches 1 genannten Merkmale gelöst. Weitere vorteilhafte Ausbildungen sind den abhängigen Patentansprüchen 2 bis 6 entnehmbar.According to the invention, this object is achieved by the features mentioned in the characterizing part of patent claim 1. Further advantageous developments can be found in the dependent claims 2 to 6.

Anhand der Zeichnung werden Ausführungsbeispiele der Erfindung erläutert, und zwar zeigen:

  • Fig. 1 eine Längsseitenansicht des Werkzeuges im Bereitschaftzustand in einem ersten Ausführungsbeispiel,
  • Fig. 2 einen Längsschnitt,
  • Fig. 3 einen Querschnitt nach der Linie 111-111 in Fig. 1,
  • Fig. 4 einen Querschnitt nach der Linie IV-IV in Fig. 1,
  • Fig. 5 eine Längsseitenansicht eines zweiten Ausführungsbeispiels, die Körnerspitze in ein kleines Loch im Werkstück eingeführt, ohne Spannband,
  • Fig. 5a eine Variante zur Zentrierung von Wellen oder Zapfen,
  • Fig. 6 einen Längsschnitt, die Körnerspitze in ein grosses Loch im Werkstück eingeführt, mit Spannband,
  • Fig. 7 eine Längsseitenansicht, das Distanzelement auseinandergezogen und die Hohlschäfte ineinandergeschoben, vor dem Aufsetzen des Werkzeuges auf dem Werkstück,
  • Fig. 8 eine Teilansicht im Sinne der Fig. 5, der unterste Hohlschaft in ein Stufenloch im Werkstück passend eingeführt,
  • Fig. 9 eine Teilansicht wie Fig. 8, wiederum der unterste Hohlschaft in ein Gewindeloch eingeführt,
  • Fig. 10 ein Werkstück mit zwei sich kreuzenden Schlitzen und verschieden dimensionierten Löchern,
  • Fig. 11 eine Teilansicht des Werkzeuges mit einem Distanzsteller zur Vornahme von Markierungen in Gruppen im Werkstück und
  • Fig. 11a einen unter Zuhilfenahme des Distanzstellers nach Fig. 11 hergestellten Besatz an einem Werkstück, der durch Vertiefungen gebildet ist.
Exemplary embodiments of the invention are explained on the basis of the drawing, in particular:
  • 1 is a longitudinal side view of the tool in the ready state in a first embodiment,
  • 2 shows a longitudinal section,
  • 3 shows a cross section along the line 111-111 in FIG. 1,
  • 4 shows a cross section along the line IV-IV in FIG. 1,
  • 5 is a longitudinal side view of a second embodiment, the center point inserted into a small hole in the workpiece, without a strap,
  • 5a shows a variant for centering shafts or pins,
  • 6 shows a longitudinal section, the center of the grain inserted into a large hole in the workpiece, with a clamping band,
  • 7 shows a longitudinal side view, the spacer element pulled apart and the hollow shafts pushed into one another, before the tool is placed on the workpiece,
  • 8 is a partial view in the sense of FIG. 5, the lowermost hollow shaft inserted in a stepped hole in the workpiece,
  • 9 is a partial view like FIG. 8, again the lowermost hollow shaft inserted into a threaded hole,
  • 10 a workpiece with two intersecting slots and differently dimensioned holes,
  • 11 is a partial view of the tool with a spacer for making markings in groups in the workpiece and
  • 11a shows a trim produced with the aid of the spacer according to FIG. 11 on a workpiece which is formed by depressions.

1 bezeichnet einen aus Hartmetall bestehenden Körnerstift, welcher einerends mit einer Spitze 2 und anderseits mit einem Schlagkopf 3 versehen ist. Für Normalgebrauch ist eine Länge des Körnerstiftes von ca. 7 cm und eine Dicke von ca. 2-3 mm geeignet. Auf dem Körnerstift 1 ist eine aus mehreren Stücken bestehende Gruppe teleskopartig ineinandergreifenden, verschiebbaren Hohlschäften 4 gelagert. Es können je nach Verwendungsart aber weniger oder mehr als sieben Hohlschäfte gebraucht werden. An den oberen Enden der Hohlschäfte 4 befindet sich je eine Distanzbuchse 5. Die Distanzbuchsen haben zueinander verschiedene Weiten und Durchmesser. Die Hohlschäfte 4 und die Distanzbuchsen 5 bestehen aus je einem Stück, sie können aber auch Einzelteile sein, die durch Verschweissung miteinander verbunden, oder aus einem Stück geformt sind. Die Weiten der Hohlschäfte 4 vergrössen sich von unten nach oben um je ca. 1 mm, diejenigen der Distanzbuchsen 5 dagegen von oben nach unten um ca. 1 mm.1 denotes a grain pin made of hard metal, which is provided on one end with a tip 2 and on the other hand with a striking head 3. For normal use, the length of the center pin is approx. 7 cm and the thickness approx. On the grain pin 1 is a group consisting of several pieces telescopically interlocking, displaceable hollow shafts 4 is mounted. Depending on the type of use, fewer or more than seven hollow shafts can be used. There is a spacer bushing 5 at each of the upper ends of the hollow shafts 4. The spacer bushings have different widths and diameters from one another. The hollow shafts 4 and the spacers 5 each consist of one piece, but they can also be individual parts which are connected to one another by welding, or are formed from one piece. The widths of the hollow shafts 4 increase from bottom to top by approx. 1 mm each, those of the spacer bushes 5, on the other hand, increase from top to bottom by approx. 1 mm.

Nach Fig. 5 und 6 sind an den Umfangsseiten der Distanzbuchsen 5 Arretierschrauben 6 angebracht, deren Köpfe abstehen. Bei Anzug der Arretierschrauben 6 lassen sich die Distanzbuchsen 5 mit den Hohlschäften 4 am Körnerstift 1 festlegen. Nach Fig. 6 ist als Zugmittel ein Gummiband 7 über einen Teil der Arretierschrauben 6 gelegt und bezweckt die Distanzbuchsen 5 aneinander zu ziehen und die Hohlschäfte 4 auseinander zu halten, wenn die Arretierschrauben 6 nicht angezogen sind. Das selbständige Wegfallen vom Körnerstift 1 bei den Körnungsarbeiten kann dadurch verhindert und das Werkzeug in Bereitschaftstellung gehalten werden. In Fig. 6 greift der vierte Hohlschaft 4 passend in das Loch 9, während die restlichen grösseren Hohlschäfte dem Werkstück 8 aufliegen. In Fig. 5 ist das Lock 9 sehr klein, in Fig. 6 dagegen mehrfach grösser. Im untersten Hohlschaft liegen die anderen teleskopartig ineinander geschobenen Hohlschäfte. Der Körnerstift 1 bzw. die Spitze 2 befindet sich genau im Zentrum des Loches 9. Die Distanzbuchsen 5 liegen dabei aufeinander. In Fig. 5a umgreift ein Hohlschaft 4 eine Welle 8' und die Spitze des Körnerstiftes 1 liegt der Stirnseite derselben an, wo die Körnung vorgenommen wird. Dasselbe ist der Fall wenn sich anstelle der Welle 8' ein Zapfen befindet. Zwei dem Werkstück 8 aufliegende Hohlschäfte 4 dienen dabei als rechtwinklige, stützende Auflage, welche das Verkanten des Werkzeuges erschweren.5 and 6 5 locking screws 6 are attached to the peripheral sides of the spacers, the heads of which protrude. When the locking screws 6 are tightened, the spacers 5 can be fixed on the center pin 1 with the hollow shafts 4. According to FIG. 6, a rubber band 7 is placed over part of the locking screws 6 as a traction means and the purpose is to pull the spacers 5 together and to keep the hollow shafts 4 apart when the locking screws 6 are not tightened. The independent dropping of the grain pin 1 during the grain work can be prevented and the tool can be kept in the ready position. In Fig. 6, the fourth hollow shaft 4 fits into the hole 9, while the remaining larger hollow shafts rest on the workpiece 8. 5, the lock 9 is very small, in FIG. 6, however, it is several times larger. in the The bottom hollow shaft is where the other hollow shafts are telescoped. The center pin 1 or the tip 2 is located exactly in the center of the hole 9. The spacers 5 lie on top of each other. In Fig. 5a, a hollow shaft 4 surrounds a shaft 8 'and the tip of the grain pin 1 lies against the end face thereof, where the grain is carried out. The same is the case if there is a pin instead of the shaft 8 '. Two hollow shanks 4 resting on the workpiece 8 serve as a right-angled, supporting support, which make it difficult to tilt the tool.

Das Werkstück 8 kann auf einem weiteren in Fig. 8, 9 und 11 gezeichneten Werkstück 10 liegen und durch Schläge auf den Körnerstift werden auf dessen Oberfläche Körnungen erzeugt, welches kegelige Vertiefungen sind.The workpiece 8 can lie on a further workpiece 10 shown in FIGS. 8, 9 and 11 and by striking the center pin grains are produced on its surface, which are conical depressions.

Mit dem Werkzeug lassen sich in Schlitzen oder Rinnen ebenfalls genau in der Längsmitte derselben liegende Anreisslinien ziehen resp. ritzen. Der untere Teil des Werkzeuges mit dem Körnerstift 1 mit einem passenden Hohlschaft ist einfach in den Schlitz 9', die Rinne 9" der Welle 8' oder des Zapfens einzuführen, wobei die Spitze 2 selbsttätig, genau die durch strichpunktierte Linien dargestellte längsmittige Stellung einnimmt. Durch Hin- und Herziehen des Werkzeuges entstehen im Schlitz oder in der Rinne jeweis längsmittige Anreisslinien 18. Die sich kreuzenden Stellen der Anreisslinien in den Schlitzen oder Rinnen, wie aus Fig. 10 ersichtlich, zeigen die Kreuzpunkte genau an. In Fig. 10 sind noch vier verschieden grosse Löcher 9 vorhanden, deren Zentren sich mit dem Werkzeug rasch und genau, zwecks Vornahme von Körnungen, ermitteln lassen.With the tool, scribe lines can also be drawn in slots or channels exactly in the longitudinal center thereof. scratch. The lower part of the tool with the center pin 1 with a matching hollow shaft is easy to insert into the slot 9 ', the groove 9 "of the shaft 8' or the pin, the tip 2 automatically taking exactly the longitudinal position shown by dash-dotted lines. By pulling the tool back and forth, longitudinal scribe lines 18 are formed in the slot or in the groove. The intersecting points of the scribe lines in the slots or grooves, as can be seen in Fig. 10, show the cross points exactly. In Fig. 10 are still Four different sized holes 9 are available, the centers of which can be determined quickly and precisely with the tool for the purpose of carrying out granulations.

Um eine Gruppe von in gleichen Abständen zueinander liegenden Vertiefungen auf dem Werkstück 8 zu schaffen, dient der in Fig. 11 offenbarte Distanzeinsteller 12. Am Distanzeinsteller sind zwei Querträger 14 beweglich befestigt, die sich. mittels den Klemmschrauben 17 fixieren lassen, um so die Distanz des Körnerstiftes 1 genau einstellen und sichern zu können. Steckt man den Fühlerdorn 16 in eine, vorangehend durch den Körnerstift erzeugte Kerbe, so nimmt der Körnerstift 1 eine zu dieser distanzierte Stellung ein. Bei Wiederholung dieses Vorganges, wobei der Fühlerdorn jeweils in die neu erzeugte Kerbe eingeführt wird, lässt sich mittels eines konventionellen Rohrwerkzeuges leicht eine Gruppe von gleichmässige Abstände zueinander aufweisende Vertiefungen 11 herstellen (Fig. 11a).The distance adjuster 12 shown in FIG. 11 is used to create a group of indentations on the workpiece 8 that are equally spaced from one another. have it fixed by means of the clamping screws 17 so that the distance of the center pin 1 can be set and secured precisely. If the feeler pin 16 is inserted into a notch previously produced by the center pin, the center pin 1 assumes a position distant from this. When this process is repeated, with the sensor mandrel being inserted into the newly created notch, a group of uniformly spaced-apart depressions 11 can easily be produced using a conventional pipe tool (FIG. 11a).

Das beschriebene Werkzeug ist für Handwerker wie Mechaniker, Schlosser, Werkzeugmacher, Schreiner und Bastler besonders geeignet, welche Arbeiten ausführen, bei denen die Zentren von Löchern oder die Längsmitten von Schlitzen und Rinnen, Wellen und Zapfen, als auch die Kreuzpunkte von sich kreuzenden Schlitzen oder Rinnen zu bestimmen sind. Das Herausbohren abgebrochener Schrauben, ohne Beschädigungsgefahr des Gewindes im Werkstück, wird zufolge der Möglichkeit, an der Abbruchstelle der Schraube eine zentrisch genaue Körnung anzubringen, welche als Orientierungshilfe bei der Ansetzung des zur Anwendung kommenden Bohrwerkzeuges wirkt.The tool described is particularly suitable for craftsmen such as mechanics, locksmiths, toolmakers, carpenters and hobbyists who carry out work in which the centers of holes or the longitudinal center of slots and channels, shafts and pins, as well as the cross points of intersecting slots or Channels are to be determined. Drilling out broken screws without risking damage to the thread in the workpiece becomes possible due to the possibility of attaching a centrically accurate grain to the point where the screw breaks off, which acts as an orientation aid when attaching the drilling tool to be used.

Claims (6)

1. Tool for centre-punching and scribing workpieces, having a centre punch of hard metal, characterised in that a group of spacer sleeves (5) which are adjacent to one another and of different diameters and have hollow shafts (4) which fit into one another in a telescopic manner and likewise have different diameters from one another and are displaceably arranged are mounted on the centre punch (1) in such a way that, after insertion of separated hollow shafts (4) into a hole (9) or into a slot (9') or inversion of the hollow shafts over spindles or journals (8'), and when one of the hollow shafts has fitted, the centre punch (1) can assume a position located in the centre of the hole or on the longitudinal axis of the slot or on spindles.
2. Tool according to Claim 1, characterised in that the spacer sleeves (5) have diameters which differ from one another and are provided with locking screws (6).
3. Tool according to Claims 1 and 2, characterised in that an elastic tension means (7) is placed over the locking screws (6), which tension means attempts to pull together the spacer sleeves (5).
4. Tool according to Claim 1, characterised in that a removable distance adjuster (12) is arranged at the point (2) of the centre punch (1), which space adjuster has at least one support (14) which is oriented transversely with respect to the centre punch and on which a removable probe spindle (16) for producing notches (11) in the workpiece (8) is located, and that the centre punch (1) is detachably fastened in the support (14) by means of screws (13) (Fig. 11).
5. Tool according to Claim 1, characterised in that the spacer sleeves (5) and the hollow shafts (4) each consist of a single piece.
6. Tool according to Claim 1, characterised in that the spacer sleeves (5) and the hollow shafts (4) each consist of two parts connected to one another.
EP87810320A 1986-06-03 1987-06-03 Tool for centre-punching and marking work pieces Expired - Lifetime EP0248766B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87810320T ATE60268T1 (en) 1986-06-03 1987-06-03 TOOL FOR PUNCHING AND SCRIPPING WORKPIECES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2236/86 1986-06-03
CH2236/86A CH669551A5 (en) 1986-06-03 1986-06-03

Publications (3)

Publication Number Publication Date
EP0248766A2 EP0248766A2 (en) 1987-12-09
EP0248766A3 EP0248766A3 (en) 1989-01-25
EP0248766B1 true EP0248766B1 (en) 1991-01-23

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EP87810320A Expired - Lifetime EP0248766B1 (en) 1986-06-03 1987-06-03 Tool for centre-punching and marking work pieces

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US (1) US4823468A (en)
EP (1) EP0248766B1 (en)
JP (1) JPS6339774A (en)
AT (1) ATE60268T1 (en)
CH (1) CH669551A5 (en)
DE (1) DE3767571D1 (en)

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Also Published As

Publication number Publication date
CH669551A5 (en) 1989-03-31
EP0248766A3 (en) 1989-01-25
JPS6339774A (en) 1988-02-20
ATE60268T1 (en) 1991-02-15
DE3767571D1 (en) 1991-02-28
US4823468A (en) 1989-04-25
EP0248766A2 (en) 1987-12-09

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