EP1838499A1 - Tool for inserting and/or removing a helically coiled wire insert - Google Patents

Tool for inserting and/or removing a helically coiled wire insert

Info

Publication number
EP1838499A1
EP1838499A1 EP06706310A EP06706310A EP1838499A1 EP 1838499 A1 EP1838499 A1 EP 1838499A1 EP 06706310 A EP06706310 A EP 06706310A EP 06706310 A EP06706310 A EP 06706310A EP 1838499 A1 EP1838499 A1 EP 1838499A1
Authority
EP
European Patent Office
Prior art keywords
spindle body
driving blade
blade
tool according
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.)
Granted
Application number
EP06706310A
Other languages
German (de)
French (fr)
Other versions
EP1838499B1 (en
Inventor
Klaus Friedrich Grubert
Uwe Kirchhecker
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.)
Boellhoff Verbindungstechnik GmbH
Original Assignee
Boellhoff Verbindungstechnik 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 Boellhoff Verbindungstechnik GmbH filed Critical Boellhoff Verbindungstechnik GmbH
Publication of EP1838499A1 publication Critical patent/EP1838499A1/en
Application granted granted Critical
Publication of EP1838499B1 publication Critical patent/EP1838499B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/143—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same for installing wire thread inserts or tubular threaded inserts

Definitions

  • the present invention relates to a tool for installing and / or removing a tangless wire thread insert according to the preamble of patent claim 1.
  • Tools of this type are known, for example, from EP 0 615 818 B1, EP 0 153 266 B1, EP 0 153 267 B1 and EP 0 153 268 B1. Such tools serve to install and / or remove a tangless wire thread insert into a threaded bore of a workpiece.
  • the driving blade is tiltably mounted in the longitudinal groove of the spindle body so that it is biased by spring force into an engagement position in which a driving projection of the driving blade engages in a recess of the wire thread insert, so that the spindle body, when rotated, the wire thread insert rotates.
  • the engaged position of the driving projection of the driving blade must have a precise radial projection with respect to the spindle body to ensure proper engagement between the driving projection and the recess of the wire thread insert.
  • Carrier blade designed as a two-armed lever which is rotatable (tiltable) by a pin bearing about an axis extending transversely to the longitudinal axis. At one end of the driving blade of the driving projection is provided, while at the other end a supported on the spindle body small screw benfeder spring, which biases the driving blade into the engaged position.
  • the radial projection of the driving projection of the driving blade is determined by the position of the axis of the pin bearing, which consists of a spindle body and the driving blade penetrating bolt.
  • Even minor manufacturing defects lead due to a relatively large distance between the axis of the pin position tion and the driving projection to relatively large errors in the radial projection of the driving blade.
  • manufacturing errors are compensated by a stop in such a way that the stopper is pressed in a defined end position in the spindle body.
  • the driving blade is replaced as a wear part, a readjustment of the radial projection of the driving blade by the user is not possible.
  • the driving projection of the driving blade protrudes radially outwards through a frictional engagement of the spindle body, which recess lies opposite the longitudinal groove receiving the driving blade.
  • the spindle body is therefore weakened in this area in its cross section.
  • the present invention has for its object to provide a tool for installing and / or removing a tenonless wire thread insert, in which the achievable accuracy of the radial Kochstan- can be simpler realized with respect to the spindle body of the driving blade.
  • the replacement of the driving blade should be simplified.
  • a cross-sectional weakening of the spindle body should largely be avoided in the region of the entrainment projection of the entrainment blade.
  • a round wire ring is provided for axially fixing the driving blade, which simultaneously generates the spring force for biasing the driving blade in the engaged position.
  • the depth stop sleeve is provided for the depth stop sleeve to have a cylindrical bore section which fits the spindle body and whose bore wall serves as a contact surface against which the driver blade is pressed by the spring force.
  • the radial projection of the driving blade results in the inventively designed tool from the geometry and the position of the cutting edge bearing relative to the system between the driving blade and the depth stop sleeve.
  • the driving blade can be exchanged in a simple manner. All you have to do is loosen the depth stop sleeve. The driving blade can then be removed and reinstalled without further tools and without disassembly of the round wire ring; the risk of loss of the helical spring provided in the prior art is thus excluded.
  • the driving blade is pressed by the spring force of the round wire ring in abutment with the depth stop sleeve and not in Anläge with the spindle body, so that the driving projection of the
  • Carrier blade to the open side of the longitudinal groove protrudes radially outward.
  • the spindle body can therefore be formed closed on its longitudinal groove radially opposite side, so that the spindle body in the entire region of the longitudinal groove has a U-shaped cross-section. The result is a smaller cross-sectional weakening of the spindle body and thus greater stability of the tool.
  • FIG. 2 shows a round wire ring for the tool in FIG. 1.
  • the tool shown in Fig. 1 is used for installing a tapped wire thread insert 2 in a threaded hole of a component (not shown). Since such wire thread inserts and the manner in which they are screwed into the threaded hole, are basically known, will not be discussed further.
  • the tool shown in FIG. 1 consists of a spindle body 4, a driving blade 6, a depth stop sleeve 8, a counter sleeve 10, a protective cap 12 and a round wire ring 14.
  • the spindle body 4 is composed, from right to left in FIG. 1, of a drive section 16, which is connectable to a drive for rotating the spindle body, a radial bearing section 18, an intermediate section 19, a threaded section 20, a cylindrical section
  • the spindle body 4 is provided with a longitudinal groove 26 which extends in the longitudinal direction from the left-hand end of the spindle body into a region of the intermediate section 19.
  • the longitudinal groove 26 is open only towards the one radial side (downwards in FIG. 1), while the radially opposite side of the spindle body 4 is closed, so that the spindle body 4 has a U-shaped cross section in the entire region of the longitudinal groove 26 Has.
  • the bottom of the longitudinal groove is rectilinear, except that it has a recess 28 in a central portion and an arcuate course at the right-hand end.
  • the driving blade 6 consists of a two-armed lever 30 which is arranged in the longitudinal groove 26 of the spindle body 6.
  • the entrainment blade 6 is in a central region by means of a cutting edge bearing about an axis extending transversely to the longitudinal axis of the tool relative to the spindle body 4th mounted rotatable or tiltable.
  • the driving blade 6 is provided with a projection which forms a bearing blade 32, which rests against a contact surface of the recess 28.
  • the recess 28 is shown rounded in Fig. 1; However, it can also be designed differently, for example in the form of a flat surface.
  • the driving blade 6 has at its (in Fig. 1) right-hand end on the side remote from the bearing edge 32 side a notch 34 through which the round wire ring 14 extends.
  • the round wire ring 14, which is shown in greater detail in FIG. 2, is arranged in a circumferential annular groove of the spindle body 4. He; is formed as a non-closed ring so that it has two spaced Um-
  • ⁇ has beginning, as shown in Fig. 2 can be seen. From one of these circumferential ends is an axially extending leg 36, which is arranged in an axially extending groove 38 of the spindle body 4. In this way, the round, wire ring 14 is secured against rotation relative to the spindle body 4. The arranged in the annular groove of the spindle body 4 round wire ring
  • the round wire ring 14 fixes the driving blade 6 in the axial direction relative to the spindle body 4.
  • the round wire ring 14 exerts on the driving blade 6 a spring action, in the clockwise direction directed rotational movements of the driving blade 6 to the
  • Counter-cutting bearing 28, 32 counteracts.
  • the entrainment blade 6 is thus held by the round wire ring in the position shown in Fig. 1, in which a provided on the left-side end of the driving blade 6 driving projection 40 is pressed into engagement with a recess of the wire thread insert 2. Since the design of the driving projection 40 and its interaction with the wire thread insert 2 may be formed in a conventional manner, will not be discussed in detail.
  • the spindle body 4 runs, as can be seen in FIG. 1, through the interior of the depth stop sleeve 8.
  • the depth stop sleeve 8 has a threaded section 42 which engages with the threaded portion 20 of the spindle body 4 is screwed and fixed by the lock sleeve 10 in a preset axial position.
  • the depth stop sleeve 8 and the counter sleeve 10 are each provided with a drive feature (eg, a hexagon) for applying a corresponding tool.
  • the depth stop sleeve 8 has, adjacent to the threaded portion 42, a further portion 44, the inner wall of which forms a cylindrical bore portion 46.
  • the cylindrical bore portion 46 receives the cylindrical portion 22 of the spindle body 4 fitting.
  • the bore wall of the bore portion 46 in this case forms a contact surface 48 for a "raised contact surface 49 of the driving blade 6, which, seen radially, on the same side as the notch 34, but, seen axially, on the other side of the cutting edge bearing 28, 32 lie , This ensures that the driving blade 6 is biased by the round wire ring 14 so that the driving blade 6 is pressed with its raised contact surface against the abutment surface 48 of the depth stop sleeve 8.
  • the radial projection of the driving projection 40 which must be precisely adjusted for detecting the wire thread insert 2, results from the design of the tool described and illustrated, namely from the abutment of the contact surface 49 of the driving blade 6 on the abutment surface 48 of the depth stop sleeve 8, through the Position of the bearing blade 32 of the driving blade 6 relative to the contact surfaces 48, 49 and by the depth of the recess 28 of the spindle body 4. All these surfaces and dimensions can be relatively easily finished with great accuracy:
  • the longitudinal groove 26 of the spindle body 4 can be by rolling - or Nuten- produce milling, whereby curves in the region of the recess 28 and 26 arise at the right end of the longitudinal groove.
  • the arrangement of the cylindrical portion 22 of the spindle body 4 in the cylindrical bore portion 48 of the depth stop sleeve 8 is formed in the form of a "bore-shaft fit", whereby a relatively simple manner a precise Abstüt- tion of the contact surface 49 of the driving blade 6 on the contact surface 48 of the depth stop sleeve 8 is achieved.
  • the spindle body 4 in the entire region of the longitudinal groove 26 has a U-shaped cross-section, of the spindle body 4 into diesel sem region has a relatively high strength, which gives a correspondingly high stability to the tool as a whole.
  • the interchangeability of the .Me.kllinge also offers the possibility to use the tool for removing a wire thread insert.
  • the tool is equipped with a removal blade (not shown).
  • the removal blade is provided with an area that allows manual unlocking for removal of the threaded insert located on the receiving section 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Harvester Elements (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Multi-Conductor Connections (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Magnetic Heads (AREA)

Abstract

The tool has a spindle body (4) with a drive head (16) for rotating the body and a retainer section (24) with a thread for taking up a wire threaded insert (2). The body is axially held within a stop sleeve (8) that is positioned in a longitudinal slot (26) with respect to the body. A driving blade (6) is tiltably mounted using knife edge bearings (28, 32) in the slot of the body.

Description

Werkzeug zum Ein- und/oder Ausbauen eines zapfenlosen Drahtgewindeeinsatzes Tool for installing and / or removing a tangless wire thread insert
Die vorliegende Erfindung betrifft ein Werkzeug zum Ein- und/oder Ausbauen eines zapfenlosen Drahtgewindeeinsatzes gemäß dem Oberbegriff des Patentanspruchs 1.The present invention relates to a tool for installing and / or removing a tangless wire thread insert according to the preamble of patent claim 1.
Werkzeuge dieser Gattung sind beispielsweise aus EP 0 615 818 Bl, EP 0 153 266 Bl, EP 0 153 267 Bl und EP 0 153 268 Bl bekannt. Derartige Werkzeuge dienen dazu, einen zapfenlosen Drahtgewindeeinsatz in eine Ge- windebohrung eines Werkstücks einzubauen und/oder aus diesem auszubauen.Tools of this type are known, for example, from EP 0 615 818 B1, EP 0 153 266 B1, EP 0 153 267 B1 and EP 0 153 268 B1. Such tools serve to install and / or remove a tangless wire thread insert into a threaded bore of a workpiece.
Hierzu ist die Mitnahmeklinge in der Längsnut des Spindelkörpers kippbar so gelagert, dass sie durch Federkraft in eine Eingriffsstellung vorgespannt wird, in der ein Mitnahmevorsprung der Mitnahmeklinge in eine Ausnehmung des Drahtgewindeeinsatzes greift, so dass der Spindelkörper, wenn er gedreht wird, den Drahtgewindeeinsatz mitdreht. In der Eingriffsstellung muss der Mitnahmevorsprung der Mitnahmeklinge einen genauen radialen Überstand bezüglich des Spindelkörpers haben, um einen einwandfreien Eingriff zwischen dem Mitnahmevorsprung und der Ausnehmung des Drahtgewindeeinsatzes sicherzustellen. Bei den Werkzeugen der oben genannten Druckschriften ist dieFor this purpose, the driving blade is tiltably mounted in the longitudinal groove of the spindle body so that it is biased by spring force into an engagement position in which a driving projection of the driving blade engages in a recess of the wire thread insert, so that the spindle body, when rotated, the wire thread insert rotates. In the engaged position of the driving projection of the driving blade must have a precise radial projection with respect to the spindle body to ensure proper engagement between the driving projection and the recess of the wire thread insert. In the tools of the above publications is the
Mitnahmeklinge als zweiarmiger Hebel ausgebildet, der durch einen Bolzenlagerung um eine quer zur Längsachse verlaufende Achse drehbar (kippbar) ist. An einem Ende der Mitnahmeklinge ist der Mitnahmevorsprung vorgesehen, während am anderen Ende eine am Spindelkörper abgestützte kleine Schrau- benfeder angreift, die die Mitnahmeklinge in die Eingriffsstellung vorspannt.Carrier blade designed as a two-armed lever which is rotatable (tiltable) by a pin bearing about an axis extending transversely to the longitudinal axis. At one end of the driving blade of the driving projection is provided, while at the other end a supported on the spindle body small screw benfeder spring, which biases the driving blade into the engaged position.
Bei diesen vorbekannten Werkzeugen wird der radiale Überstand des Mitnahmevorsprungs der Mitnahmeklinge durch die Lage der Achse der Bolzenlagerung bestimmt, die aus einem den Spindelkörper und die Mitnahmeklinge durchdringenden Bolzen besteht. Bereits kleinere Fertigungsfehlers führen aufgrund eines relativ großen Abststandes zwischen der Achse der Bolzenlage- rung und dem Mitnahmevorsprungs zu relativ großen Fehlern im radialen Überstand der Mitnahmeklinge. Es sind bereits Lösungen bekannt, bei denen Fertigungsfehler durch einen Anschlag in der Weise ausgeglichen werden, dass der Anschlag in einer definierten Endposition in den Spindelkörper eingepresst wird. Wenn allerdings die Mitnahmeklinge als Verschleissteil ausgetauscht wird, ist eine Neujustierung des radialen Überstandes der Mitnahmeklinge durch den Anwender nicht möglich.In these prior art tools, the radial projection of the driving projection of the driving blade is determined by the position of the axis of the pin bearing, which consists of a spindle body and the driving blade penetrating bolt. Even minor manufacturing defects lead due to a relatively large distance between the axis of the pin position tion and the driving projection to relatively large errors in the radial projection of the driving blade. There are already known solutions in which manufacturing errors are compensated by a stop in such a way that the stopper is pressed in a defined end position in the spindle body. However, if the driving blade is replaced as a wear part, a readjustment of the radial projection of the driving blade by the user is not possible.
Bei den Werkzeugen der oben genannten Druckschriften ragt der Mitnahmevorsprung der Mitnahmeklinge durch eine Ausriehmung des Spindel- körpers radial nach außen, welche Ausnehmung der die Mitnahmeklinge aufnehmenden Längsnut gegenüberliegt. Der Spindelkörper wird daher in diesem Bereich in seinem Querschnitt geschwächt.In the tools of the above-mentioned publications, the driving projection of the driving blade protrudes radially outwards through a frictional engagement of the spindle body, which recess lies opposite the longitudinal groove receiving the driving blade. The spindle body is therefore weakened in this area in its cross section.
Ferner ist bei den vorbekannten Werkzeugen der Austausch der Mitnahmeklinge wegen der Bolzenlagerung relativ aufwendig, abgesehen da- von, dass die Gefahr eines Verlustes der die Mitnahmeklinge vorspannendenFurthermore, in the prior art tools, the replacement of the driving blade is relatively expensive because of the pin bearing, apart from the risk of loss of biasing the driving blade
Schraubenfeder besteht.Coil spring exists.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Werkzeug zum Ein- und/oder Ausbauen eines zapfenlosen Drahtgewindeeinsatzes zu schaffen, bei der sich die zu erzielende Genauigkeit des radialen Überstan- des der Mitnahmeklinge bezüglich des Spindelkörpers einfacher realisieren lässt. Außerdem soll der Austausch der Mitnahmeklinge vereinfacht werden. Ferner soll eine Querschnittsschwächung des Spindelkörpers im Bereich des Mitnahmevorsprungs der Mitnahmeklinge weitestgehend vermieden werden.The present invention has for its object to provide a tool for installing and / or removing a tenonless wire thread insert, in which the achievable accuracy of the radial Überstan- can be simpler realized with respect to the spindle body of the driving blade. In addition, the replacement of the driving blade should be simplified. Furthermore, a cross-sectional weakening of the spindle body should largely be avoided in the region of the entrainment projection of the entrainment blade.
Das Werkzeug gemäß der Erfindung ist in Anspruch 1 definiert. Erfindungsgemäß ist die Mitnahmeklinge in der Längsnut desThe tool according to the invention is defined in claim 1. According to the invention, the driving blade in the longitudinal groove of
Spindelkörpers durch eine Schneidenlagerung kippbar gelagert.Spindle body tiltably supported by a cutting edge storage.
Zweckmäßigerweise ist zur axialen Fixierung der Mitnahmeklinge ein Runddrahtring vorgesehen, der gleichzeitig die Federkraft zum Vorspannen der Mitnahmeklinge in die Eingriffsstellung erzeugt. Ferner ist zweckmäßigerweise vorgesehen, dass die Tiefenanschlag- hülse einen zylindrischen Bohrungsabschnitt hat, der den Spindelkörper passend aufnimmt und dessen Bohrungswand als Anlagefläche dient, gegen die die Mitnahmeklinge durch die Federkraft angedrückt wird. Der radiale Überstand der Mitnahmeklinge ergibt sich bei dem erfindungsgemäß ausgebildeten Werkzeug aus der Geometrie und der Lage der Schneidenlagerung relativ zu der Anlage zwischen der Mitnahmeklinge und der Tiefenanschlaghülse. Diese relativen Lagen der involvierten Teile lassen sich mit geringem Fertigungsaufwand sehr genau herstellen, so dass die zu er- zielende Genauigkeit des radialen Überstandes der Mitnahmeklinge auf relativ einfache Weise realisiert.werden kann.Conveniently, a round wire ring is provided for axially fixing the driving blade, which simultaneously generates the spring force for biasing the driving blade in the engaged position. Furthermore, provision is expediently made for the depth stop sleeve to have a cylindrical bore section which fits the spindle body and whose bore wall serves as a contact surface against which the driver blade is pressed by the spring force. The radial projection of the driving blade results in the inventively designed tool from the geometry and the position of the cutting edge bearing relative to the system between the driving blade and the depth stop sleeve. These relative positions of the involved parts can be produced very precisely with little manufacturing effort, so that the accuracy of the radial projection of the entrainment blade to be achieved is realized in a relatively simple manner . can be.
Ferner lässt sich bei dem erfindungsgemäß ausgebildeten Werkzeug die Mitnahmeklinge in einfacher Weise austauschen. Hierzu muss lediglich die Tiefenanschlaghülse gelöst werden. Die Mitnahmeklinge kann dann ohne weitere Werkzeuge und ohne Demontage des Runddrahtringes ausgebaut und wieder eingebaut werden; die Gefahr eines Verlustes der im Stand der Technik vorgesehenen Schraubenfeder ist somit ausgeschlossen.Furthermore, in the inventively embodied tool, the driving blade can be exchanged in a simple manner. All you have to do is loosen the depth stop sleeve. The driving blade can then be removed and reinstalled without further tools and without disassembly of the round wire ring; the risk of loss of the helical spring provided in the prior art is thus excluded.
Zweckmäßigerweise wird die Mitnahmeklinge durch die Federkraft des Runddrahtringes in Anlage mit der Tiefenanschlaghülse und nicht in An- läge mit dem Spindelkörper gedrückt, so dass der Mitnahmevorsprung derConveniently, the driving blade is pressed by the spring force of the round wire ring in abutment with the depth stop sleeve and not in Anläge with the spindle body, so that the driving projection of the
Mitnahmeklinge zur offenen Seite der Längsnut hin radial nach außen vorsteht. Der Spindelkörper kann daher auf seiner der Längsnut radial gegenüberliegenden Seite geschlossen ausgebildet werden, so dass der Spindelkörper im gesamten Bereich der Längsnut einen U-förmigen Querschnitt hat. Die Folge ist eine geringere Querschnittsschwächung des Spindelkörpers und somit eine größere Stabilität des Werkzeuges.Carrier blade to the open side of the longitudinal groove protrudes radially outward. The spindle body can therefore be formed closed on its longitudinal groove radially opposite side, so that the spindle body in the entire region of the longitudinal groove has a U-shaped cross-section. The result is a smaller cross-sectional weakening of the spindle body and thus greater stability of the tool.
Weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments and modifications of the invention will become apparent from the dependent claims.
Anhand der Zeichnung wird ein Ausführungsbeispiel der Erfindung näher erläutert. Es zeigt: Fig. 1 einen Längsschnitt durch das Ausführungsbeispiel eines erfindungsgemäß ausgebildeten Werkzeuges;Reference to the drawings, an embodiment of the invention will be explained in more detail. It shows: 1 shows a longitudinal section through the embodiment of an inventively designed tool.
Fig. 2 einen Runddrahtring für das Werkzeug in Fig. 1.2 shows a round wire ring for the tool in FIG. 1.
Das in Fig. 1 dargestellte Werkzeug dient zum Einbauen eines zapfenlosen Drahtgewindeeinsatzes 2 in ein Gewindeloch eines Bauteils (nicht gezeigt). Da derartige Drahtgewindeeinsätze und die Art und Weise, wie sie in das Gewindeloch eingedreht werden, grundsätzlich bekannt sind, wird hierauf nicht weiter eingegangen.The tool shown in Fig. 1 is used for installing a tapped wire thread insert 2 in a threaded hole of a component (not shown). Since such wire thread inserts and the manner in which they are screwed into the threaded hole, are basically known, will not be discussed further.
Das in Fig. 1 dargestellte Werkzeug besteht aus einem Spindelkörper 4, einer Mitnahmeklinge 6, einer Tiefenanschlaghülse 8, einer Konterhülse 10, einer Schutzkappe 12 und einem Runddrahtring 14.The tool shown in FIG. 1 consists of a spindle body 4, a driving blade 6, a depth stop sleeve 8, a counter sleeve 10, a protective cap 12 and a round wire ring 14.
Der Spindelkörper 4 setzt sich, von rechts nach links in Fig. 1, zusammen aus einem Antriebsabschnitt 16, ,der mit einem Antrieb zum Drehen des Spindelkörpers verbindbar ist, einem Radiallagerabschnitt 18, einem Zwi- schenabschnitt 19, einem Gewindeabschnitt 20, einem zylindrischen AbschnittThe spindle body 4 is composed, from right to left in FIG. 1, of a drive section 16, which is connectable to a drive for rotating the spindle body, a radial bearing section 18, an intermediate section 19, a threaded section 20, a cylindrical section
22 und einem Aufnahmeabschnitt 24 mit einem Außengewinde, auf das der Drahtgewindeeinsatz 2 aufschraubbar ist.22 and a receiving portion 24 with an external thread on which the wire thread insert 2 can be screwed.
Wie in Fig. 1 zu sehen ist, ist der Spindelkörper 4 mit einer Längsnut 26 versehen, die sich in Längsrichtung vom linksseitigen Ende des Spindelkör- pers bis in einen Bereich des Zwischenabschnitts 19 erstreckt. Die Längsnut 26 ist nur zur einen radialen Seite hin (nach unten in Fig. 1) hin offen, während die radial gegenüberliegende Seite des Spindelkörpers 4 geschlossen ist, so dass der Spindelkörper 4 im gesamten Bereich der Längsnut 26 einen U-förmi- gen Querschnitt hat. Der Boden der Längsnut ist geradlinig verlaufend, abge- sehen davon, dass er in einem mittleren Abschnitt eine Vertiefung 28 und an dem rechtsseitigen Ende einen bogenförmigen Verlauf hat.As can be seen in FIG. 1, the spindle body 4 is provided with a longitudinal groove 26 which extends in the longitudinal direction from the left-hand end of the spindle body into a region of the intermediate section 19. The longitudinal groove 26 is open only towards the one radial side (downwards in FIG. 1), while the radially opposite side of the spindle body 4 is closed, so that the spindle body 4 has a U-shaped cross section in the entire region of the longitudinal groove 26 Has. The bottom of the longitudinal groove is rectilinear, except that it has a recess 28 in a central portion and an arcuate course at the right-hand end.
Die Mitnahmeklinge 6 besteht aus einem zweiarmigen Hebel 30, der in der Längsnut 26 des Spindelkörpers 6 angeordnet ist. Die Mitnahmeklinge 6 ist in einem mittleren Bereich mittels einer Schneidenlagerung um eine quer zur Längsachse des Werkzeugs verlaufende Achse relativ zum Spindelkörper 4 drehbar bzw. kippbar gelagert. Zu diesem Zweck ist die Mitnahmeklinge 6 mit einem Vorsprung versehen, der eine Lagerschneide 32 bildet, welche an einer Anlagefläche der Vertiefung 28 anliegt. Die Vertiefung 28 ist in Fig. 1 gerundet dargestellt; sie kann jedoch auch anders ausgebildet werden, z.B. in Form einer ebenen Fläche.The driving blade 6 consists of a two-armed lever 30 which is arranged in the longitudinal groove 26 of the spindle body 6. The entrainment blade 6 is in a central region by means of a cutting edge bearing about an axis extending transversely to the longitudinal axis of the tool relative to the spindle body 4th mounted rotatable or tiltable. For this purpose, the driving blade 6 is provided with a projection which forms a bearing blade 32, which rests against a contact surface of the recess 28. The recess 28 is shown rounded in Fig. 1; However, it can also be designed differently, for example in the form of a flat surface.
Die Mitnahmeklinge 6 hat an ihrem (in Fig. 1) rechtsseitigen Ende auf der von der Lagerschneide 32 abgewandten Seite eine Kerbe 34, durch die der Runddrahtring 14 verläuft. Der Runddrahtring 14, der in Fig. 2 genauer darge- stellt ist, ist in einer umlaufenden Ringnut des Spindelkörpers 4 angeordnet. Er ; ist als nicht geschlossener Ring ausgebildet, so dass er zwei beabstandete Um-The driving blade 6 has at its (in Fig. 1) right-hand end on the side remote from the bearing edge 32 side a notch 34 through which the round wire ring 14 extends. The round wire ring 14, which is shown in greater detail in FIG. 2, is arranged in a circumferential annular groove of the spindle body 4. He; is formed as a non-closed ring so that it has two spaced Um-
Ϊ fangsenden hat, wie in Fig. 2 zu sehen ist. Von einem dieser Umfangsenden geht ein axial verlaufender Schenkel 36 ab, der in einer axial- verlaufenden Rille 38 des Spindelkörpers 4 angeordnet ist. Auf diese Weise ist der Rund- , drahtring 14 gegen ein Verdrehen relativ zum Spindelkörper 4 gesichert. Der in der Ringnut des Spindelkörpers 4 angeordnete RunddrahtringΪ has beginning, as shown in Fig. 2 can be seen. From one of these circumferential ends is an axially extending leg 36, which is arranged in an axially extending groove 38 of the spindle body 4. In this way, the round, wire ring 14 is secured against rotation relative to the spindle body 4. The arranged in the annular groove of the spindle body 4 round wire ring
14 verläuft, wie bereits erwähnt, durch die Kerbe 34 am rechtsseitigen Ende der Mitnahmeklinge 6. Dadurch fixiert der Runddrahtring 14 die Mitnahmeklinge 6 in axialer Richtung relativ zum Spindelkörper 4. Außerdem übt der Runddrahtring 14 auf die Mitnahmeklinge 6 eine Federwirkung aus, die im Uhrzeigersinn gerichteten Drehbewegungen der Mitnahmeklinge 6 um die14, as already mentioned, by the notch 34 at the right end of the driving blade 6. Thus, the round wire ring 14 fixes the driving blade 6 in the axial direction relative to the spindle body 4. In addition, the round wire ring 14 exerts on the driving blade 6 a spring action, in the clockwise direction directed rotational movements of the driving blade 6 to the
Schneidenlagerung 28, 32 herum entgegenwirkt. Die Mitnahmeklinge 6 wird somit durch den Runddrahtring in der in Fig. 1 gezeigte Lage gehalten, in der ein am linksseitigen Ende der Mitnahmeklinge 6 vorgesehener Mitnahmevorsprung 40 in Eingriff mit einer Ausnehmung des Drahtgewindeeinsatzes 2 ge- drückt wird. Da die Ausgestaltung des Mitnahmevorsprungs 40 und sein Zusammenwirken mit dem Drahtgewindeeinsatz 2 in herkömmlicher Weise ausgebildet sein können, wird hierauf nicht näher eingegangen.Counter-cutting bearing 28, 32 counteracts. The entrainment blade 6 is thus held by the round wire ring in the position shown in Fig. 1, in which a provided on the left-side end of the driving blade 6 driving projection 40 is pressed into engagement with a recess of the wire thread insert 2. Since the design of the driving projection 40 and its interaction with the wire thread insert 2 may be formed in a conventional manner, will not be discussed in detail.
Der Spindelkörper 4 verläuft, wie in Fig. 1 zu sehen ist, durch das Innere der Tiefenanschlaghülse 8. Die Tiefenanschlaghülse 8 weist einen Gewin- deabschnitt 42 auf, der mit dem Gewindeabschnitt 20 des Spindelkörpers 4 verschraubt ist und durch die Konterhülse 10 in einer voreingestellten axialen Lage festgelegt ist. Die Tiefenanschlaghülse 8 und die Konterhülse 10 sind jeweils mit einem Antriebsmerkmal (z.B. einem Sechskant) zum Ansetzen eines entsprechenden Werkzeuges versehen. Die Tiefenanschlaghülse 8 weist angrenzend an dem Gewindeabschnitt 42 einen weiteren Abschnitt 44 auf, dessen Innenwand einen zylindrischen ßohrungsabschnitt 46 bildet. Der zylindrische Bohrungsabschnitt 46 nimmt den zylindrischen Abschnitt 22 des Spindelkörpers 4 passend auf. Die Bohrungswand des Bohrungsabschnittes 46 bildet hierbei eine Anlagefläche 48 für eine „erhabene Anlagefläche 49 der Mitnahmeklinge 6, die sich, radial gesehen, auf derselben Seite wie die Kerbe 34 befinden, jedoch, axial gesehen, auf der anderen Seite der Schneidenlagerung 28, 32 liegen. Hierdurch wird erreicht, dass die Mitnahmeklinge 6 von dem Runddrahtring 14 so vorgespannt wird, dass die Mitnahmeklinge 6 mit ihrer erhabenen Anlagefläche gegen die Anlagefläche 48 der Tiefenanschlaghülse 8 angedrückt wird.The spindle body 4 runs, as can be seen in FIG. 1, through the interior of the depth stop sleeve 8. The depth stop sleeve 8 has a threaded section 42 which engages with the threaded portion 20 of the spindle body 4 is screwed and fixed by the lock sleeve 10 in a preset axial position. The depth stop sleeve 8 and the counter sleeve 10 are each provided with a drive feature (eg, a hexagon) for applying a corresponding tool. The depth stop sleeve 8 has, adjacent to the threaded portion 42, a further portion 44, the inner wall of which forms a cylindrical bore portion 46. The cylindrical bore portion 46 receives the cylindrical portion 22 of the spindle body 4 fitting. The bore wall of the bore portion 46 in this case forms a contact surface 48 for a "raised contact surface 49 of the driving blade 6, which, seen radially, on the same side as the notch 34, but, seen axially, on the other side of the cutting edge bearing 28, 32 lie , This ensures that the driving blade 6 is biased by the round wire ring 14 so that the driving blade 6 is pressed with its raised contact surface against the abutment surface 48 of the depth stop sleeve 8.
Der radiale Überstand des Mitnahmevorsprungs 40, der zum Erfassen des Drahtgewindeeinsatzes 2 präzise eingestellt sein muss, ergibt sich aufgrund der beschriebenen und dargestellten konstruktiven Ausgestaltung des Werkzeuges und zwar aus der Anlage der Anlagefläche 49 der Mitnahmeklinge 6 an der Anlagefläche 48 der Tiefenanschlaghülse 8, durch die Lage der Lagerschneide 32 der Mitnahmeklinge 6 relativ zu den Anlageflächen 48, 49 und durch die Tiefe der Vertiefung 28 des Spindelkörpers 4. Alle diese Flächen und Abmessungen lassen sich relativ einfach mit großer Genauigkeit fertigen: Die Längsnut 26 des Spindelkörpers 4 lässt sich durch einen Walzen- bzw. Nuten- fräser herstellen, wodurch Rundungen im Bereich der Vertiefung 28 und am rechtseitigen Ende der Längsnut 26 entstehen. Die Anordnung des zylindrischen Abschnittes 22 des Spindelkörpers 4 in dem zylindrischen Bohrungsabschnitt 48 der Tiefenanschlaghülse 8 wird in Form einer „Bohrung- Wellen- Passung" ausgebildet, wodurch auf relativ einfache Weise eine präzise Abstüt- zung der Anlagefläche 49 der Mitnahmeklinge 6 an der Anlagefläche 48 der Tiefenanschlaghülse 8 erzielt wird.The radial projection of the driving projection 40, which must be precisely adjusted for detecting the wire thread insert 2, results from the design of the tool described and illustrated, namely from the abutment of the contact surface 49 of the driving blade 6 on the abutment surface 48 of the depth stop sleeve 8, through the Position of the bearing blade 32 of the driving blade 6 relative to the contact surfaces 48, 49 and by the depth of the recess 28 of the spindle body 4. All these surfaces and dimensions can be relatively easily finished with great accuracy: The longitudinal groove 26 of the spindle body 4 can be by rolling - or Nuten- produce milling, whereby curves in the region of the recess 28 and 26 arise at the right end of the longitudinal groove. The arrangement of the cylindrical portion 22 of the spindle body 4 in the cylindrical bore portion 48 of the depth stop sleeve 8 is formed in the form of a "bore-shaft fit", whereby a relatively simple manner a precise Abstüt- tion of the contact surface 49 of the driving blade 6 on the contact surface 48 of the depth stop sleeve 8 is achieved.
Da5 wie bereits erwähnt, der Spindelkörper 4 im gesamten Bereich der Längsnut 26 einen U-förmigen Querschnitt hat, hat der Spindelkörper 4 in die- sem Bereich eine relativ hohe Festigkeit, was dem Werkzeug insgesamt eine entsprechend hohe Stabilität verleiht.Since 5 as mentioned above, the spindle body 4 in the entire region of the longitudinal groove 26 has a U-shaped cross-section, of the spindle body 4 into diesel sem region has a relatively high strength, which gives a correspondingly high stability to the tool as a whole.
Zum Austauschen der Mitnahmeklinge 6 ist lediglich erforderlich, die Tiefenanschlaghülse 8 vom Spindelkörper 4 zu lösen. Die Mitnahmeklinge 6 kann dann aus der Längsnut 26 desJSpindelkörpers 4 entfernt werden, ohne dass der Runddrahtring 14 aus der; Ringnut des Spindelkörpers 4 gelöst werden muss. Das Einsetzen der neuen Mitnahmeklinge 6 kann dann auf ebenso einfache Weise erfolgen.To replace the driving blade 6 is only necessary to solve the depth stop sleeve 8 from the spindle body 4. The entrainment blade 6 can then be removed from the longitudinal groove 26 of the spindle body 4 without the round-wire ring 14 being removed from the; Ring groove of the spindle body 4 must be solved. The onset of the new driving blade 6 can then be done in an equally simple manner.
Die Austauschbarkeit der .Mitnahmeklinge bietet darüber hinaus die Möglichkeit, das Werkzeug auch zum Ausbauen eines Drahtgewindeeinsatzes zu verwenden. Hierzu wird das Werkzeug mit einer Ausbauklinge (nicht gezeigt) bestückt. Wie dies im Stand der Technik bekannt ist, ist die Ausbauklinge mit einem Bereich versehen, der ein manuelles Entriegeln zur Entnahme des auf dem Aufnahmeschnitt 24 befindlichen Gewindeeinsatzes ermöglicht.The interchangeability of the .Menahmkllinge also offers the possibility to use the tool for removing a wire thread insert. For this purpose, the tool is equipped with a removal blade (not shown). As is known in the art, the removal blade is provided with an area that allows manual unlocking for removal of the threaded insert located on the receiving section 24.
Das Einsetzen des Drahtgewindeeinsatzes 2 in ein Gewindeloch er- folgt in herkömmlicher Weise, wie dies in dem eingangs zitierten Stand derThe insertion of the wire thread insert 2 in a threaded hole is carried out in a conventional manner, as in the cited state of
Technik beschrieben wird. Dasselbe gilt für das Ausbauen des Drahtgewindeeinsatzes aus einem Gewindeloch. Technology is described. The same applies to removing the wire thread insert from a threaded hole.

Claims

Werkzeug zum Ein- und/oder Ausbauen eines zapfenlosen DrahtgewindeeinsatzesAnsprüche Tool for installing and / or removing a tangless wire thread insert. Claims
1. Werkzeug zum Ein- und/oder Ausbauen eines zapfenlosen Drahtgewindeeinsatzes, mit einem Spindelkörper (4), der einen Antriebsabschnitt (16) zum Dre- hen des Spindelkörpers (4) und einen Aufnahmeabschnitt (24) mit einem Ge-1. A tool for installing and / or removing a tangless wire thread insert, comprising a spindle body (4) having a drive portion (16) for rotating the spindle body (4) and a receiving portion (24) with a
; winde zum Aufnehmen des Drahtgewindeeinsatzes (2) aufweist, einer Tiefenanschlaghülse (8), durch die sich der Spindelkörper (4) erstreckt und die bezüglich des Spindelkörpers (4) axial unverschieblich gehalten ist, und , einer Mitnahmeklinge (6), die in einer Längsnut (26) des Spindelkörpers (4) kippbar gelagert ist und durch Federkraft in Richtung auf eine Eingriffsstellung vorgespannt ist, in der die Mitnahmeklinge (6) an dem auf dem Aufnahmeabschnitt (24) angeordneten Drahtgewindeeinsatz (2) angreift, dadurch gekennzeichnet, dass die Mitnahmeklinge (6) durch eine Schneidenlagerung (28, 32) in der Längsnut (26) des Spindelkörpers (4) kippbar gelagert ist.; winch for receiving the wire thread insert (2), a depth stop sleeve (8) through which the spindle body (4) extends and which is held axially immovable relative to the spindle body (4), and, a driving blade (6) in a longitudinal groove (26) of the spindle body (4) is tiltably mounted and biased by spring force in the direction of an engagement position in which the driving blade (6) on the on the receiving portion (24) arranged wire thread insert (2) engages, characterized in that the driving blade (6) by a cutting edge bearing (28, 32) in the longitudinal groove (26) of the spindle body (4) is tiltably mounted.
2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Schneidenlagerung (28, 32) einen an der Mitnahmeklinge (6) angeformten Vorsprung mit einer Lagerschneide (32) und eine als Anlagefläche dienende Vertiefung (28) innerhalb der Längsnut (26) des Spindelkörpers (4) aufweist.2. Tool according to claim 1, characterized in that the cutting edge bearing (28, 32) one on the driving blade (6) integrally formed projection with a bearing blade (32) and serving as a bearing surface recess (28) within the longitudinal groove (26) of the spindle body (4).
3. Werkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Mitnahmeklinge (6) durch einen Runddrahtring (14) relativ zum Spindelkörper (4) axial fixiert ist. 3. Tool according to claim 1 or 2, characterized in that the driving blade (6) by a round wire ring (14) relative to the spindle body (4) is axially fixed.
4. Werkzeug nach Anspruch 3, dadurch gekennzeichnet, dass der Runddrahtring (14) die Federkraft zum Vorspannen der Mitnahmeklinge (6) erzeugt.4. Tool according to claim 3, characterized in that the round wire ring (14) generates the spring force for biasing the driving blade (6).
5. Werkzeug nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass der Runddrahtring (14) in einer Ringnut des Spindelkörpers (4) angeordnet ist und durch eine mit dieser fluchtenden Kerbe (34) der Mitnahmeklinge (6) verläuft.5. Tool according to claim 3 or 4, characterized in that the round wire ring (14) is arranged in an annular groove of the spindle body (4) and extends through an aligned with this notch (34) of the driving blade (6).
6. Werkzeug nach Anspruch 5, dadurch gekennzeichnet, dass der Rundrahtring (14) ungeschlossen ist und an einem der dadurch vorhandenen beiden Umfangsenden einen axialen Schenkel (36) hat, der in einer axialen6. Tool according to claim 5, characterized in that the Rundrahtring (14) is unclosed and on one of the existing two circumferential ends has an axial leg (36) in an axial
Rille (38) des Spindelkörpers (4) zum Fixieren des Runddrahtringes (14) in Umfangsrichtung angeordnet ist.Groove (38) of the spindle body (4) for fixing the round wire ring (14) is arranged in the circumferential direction.
7. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Spindelkörper (4) auf seiner der Längsnut (26) radial ' gegenüberliegenden Seite geschlossen ausgebildet ist, so dass der Spindelköf- per (4) im gesamten Bereich der Längsnut (26) einen U-fÖrmigen Querschnitt hat.7. Tool according to one of the preceding claims, characterized in that the spindle body (4) on its longitudinal groove (26) radially 'opposite side is formed closed, so that the Spindelköf- by (4) in the entire region of the longitudinal groove (26). has a U-shaped cross-section.
8. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mitnahmeklinge (6) durch die Federkraft in Anlage mit der Tiefenanschlaghülse (8) gedrückt wird.8. Tool according to one of the preceding claims, characterized in that the driving blade (6) is pressed by the spring force into contact with the depth stop sleeve (8).
9. Werkzeug nach Anspruch 8, dadurch gekennzeichnet, dass die Tiefenanschlaghülse (8) einen zylindrischen Bohrungsabschnitt (46) hat, der den Spindelkörper (4) passend aufnimmt und dessen Bohrungswand als Anlagefläche (48) dient, gegen die eine Anlagefläche (49) der Mitnahmeklinge (6) durch die Federkraft angedrückt wird. 9. Tool according to claim 8, characterized in that the depth stop sleeve (8) has a cylindrical bore portion (46) which receives the spindle body (4) fitting and whose bore wall serves as a contact surface (48) against which a contact surface (49) of Carrying blade (6) is pressed by the spring force.
EP06706310A 2005-01-20 2006-01-19 Tool for inserting and/or removing a helically coiled wire insert Active EP1838499B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200520000947 DE202005000947U1 (en) 2005-01-20 2005-01-20 Pivot wire threaded insert mounting/dismounting tool, has driving blade tiltably mounted using knife edge bearings in longitudinal slot of spindle body that is axially held within stop sleeve, which is placed in slot relative to body
PCT/EP2006/000456 WO2006077120A1 (en) 2005-01-20 2006-01-19 Tool for inserting and/or removing a helically coiled wire insert

Publications (2)

Publication Number Publication Date
EP1838499A1 true EP1838499A1 (en) 2007-10-03
EP1838499B1 EP1838499B1 (en) 2008-08-13

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EP06706310A Active EP1838499B1 (en) 2005-01-20 2006-01-19 Tool for inserting and/or removing a helically coiled wire insert

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EP (1) EP1838499B1 (en)
AT (1) ATE404326T1 (en)
DE (2) DE202005000947U1 (en)
ES (1) ES2313612T3 (en)
SE (1) SE530385C2 (en)
WO (1) WO2006077120A1 (en)

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WO2013007498A1 (en) 2011-07-14 2013-01-17 Böllhoff Verbindungstechnik GmbH Tool for inserting or removing a tang-free wire thread insert

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Publication number Priority date Publication date Assignee Title
WO2013007498A1 (en) 2011-07-14 2013-01-17 Böllhoff Verbindungstechnik GmbH Tool for inserting or removing a tang-free wire thread insert
DE102011051846A1 (en) 2011-07-14 2013-01-17 Böllhoff Verbindungstechnik GmbH Tool for installing or removing a tangless wire thread insert, method of manufacture therefor and method of manually changing a picking blade of this tool
US20140373326A1 (en) * 2011-07-14 2014-12-25 Böllhoff Verbindungstechnik GmbH Tool for inserting or removing a tang-free wire thread insert, production method therefor and method for manually replacing an entraining blade of this tool
US9764454B2 (en) * 2011-07-14 2017-09-19 Böllhoff Verbindungstechnik GmbH Tool for inserting or removing a tang-free wire thread insert, production method therefor and method for manually replacing an entraining blade of this tool

Also Published As

Publication number Publication date
EP1838499B1 (en) 2008-08-13
ATE404326T1 (en) 2008-08-15
DE202005000947U1 (en) 2005-04-21
WO2006077120A1 (en) 2006-07-27
ES2313612T3 (en) 2009-03-01
SE530385C2 (en) 2008-05-20
SE0601927L (en) 2006-11-06
DE502006001327D1 (en) 2008-09-25

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