EP3717178B1 - Einbauwerkzeug für einen drahtgewindeeinsatz - Google Patents

Einbauwerkzeug für einen drahtgewindeeinsatz Download PDF

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Publication number
EP3717178B1
EP3717178B1 EP18827108.4A EP18827108A EP3717178B1 EP 3717178 B1 EP3717178 B1 EP 3717178B1 EP 18827108 A EP18827108 A EP 18827108A EP 3717178 B1 EP3717178 B1 EP 3717178B1
Authority
EP
European Patent Office
Prior art keywords
clutch
installation
mandrel body
thread insert
wire thread
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.)
Active
Application number
EP18827108.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3717178A1 (de
Inventor
Andreas Marxkors
Holger Thommes
Tobias Beyer
Maximilian LEINKENJOST
Klemens RUCHA
Alexej Butov
Marcel Purrio
Hermann Zimmermann
Klaus-Friedrich Grubert
Sascha ZAVAROL
Franz Lutz
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 EP3717178A1 publication Critical patent/EP3717178A1/de
Application granted granted Critical
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Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/141—Mechanical overload release couplings
    • 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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means

Definitions

  • the present invention relates to an installation tool for a wire thread insert, a torque coupling usable in such tools, and an installation method for a wire thread insert in a threaded bore.
  • installation tools with a rotating drive unit are well known.
  • Installation tools of this type are used, for example, to install wire thread inserts in a threaded hole, to screw in a threaded bolt or to tighten or loosen a female threaded element on a threaded bolt or the like.
  • pneumatic and electric motors are used as drive units. It is also conceivable to drive such installation tools manually.
  • the document EP 1 847 357 A2 shows an installation tool according to the preamble of claim 1 and the U.S. 2005/274230 A1 a torque coupling according to the preamble of claim 10.
  • Torque couplings are used in the prior art in order to avoid an overload condition when screwing in a threaded bolt or in the case of another connection to be produced in a rotating manner.
  • Such clutches are also referred to as overload clutches, as in DE 195 01 084 C2 is described.
  • the overload clutch shown there is used in a power or motor-driven tool.
  • This overload clutch consists of driving clutch parts and driven clutch parts.
  • the driving and driven clutch parts are connected to one another via spring means and a prestressing force generated by them.
  • the mutually spring-biased clutch parts comprise input and output cam discs arranged axially opposite one another.
  • clutch balls are arranged between these input and output cam disks, these clutch balls cooperating with the cams in such a way that a releasable drive takes place between the rotary drive input and the rotary drive output.
  • the clutch parts of the overload clutch which are spring-loaded against each other, interrupt the power flow between the input side and the output side. This way will avoids that an overload torque reaches the connection to be made and causes damage there.
  • wire thread inserts With regard to installation tools for wire thread inserts, it has been shown that simply interrupting the transmission of torque when a depth stop of the installation spindle of the installation tool is reached is not sufficient to achieve comfortable installation. Rather, the constructions of wire thread inserts meanwhile require a specific loosening or separating of the installation spindle from the screwed-in wire thread insert or also a specific bending back of parts of the wire thread insert.
  • a wire thread insert with mounting spigot is installed in such a way that the mounting spindle creates a positive connection with the mounting spigot for screwing in the wire thread insert.
  • the mounting pin In order to be able to loosen the spindle from the threaded opening again, the mounting pin must be loosened from this form-fitting connection.
  • a wire thread insert without built-in pin which has a driving notch on a radial inner side, requires a built-in blade in order to be able to screw this wire thread insert into the threaded hole. After the wire thread insert has been threaded to the desired depth, appropriate manipulation of the installation tool must disengage this installation blade from the wire thread insert. Only then can the spindle be turned back or spindled out of the threaded opening in a targeted manner.
  • the wire thread insert which is in DE 10 2010 050 735 is described requires, after it has been screwed into the desired depth of the threaded opening, its mounting pin to be bent back in a targeted manner. Accordingly, it is necessary for an installation blade to engage this deflectable installation spigot in order to deflect it back into the threads of the threaded hole. Only when this additional installation step has been completed should the installation spindle be removed from the threaded opening.
  • the wire thread insert installation tool has the following features: a drive unit, in particular an electric or a pneumatic drive unit, which provides a rotary movement that can be switched between a first and a second direction, a spindle body with a drive section for rotating the spindle body and with a threaded section from which the wire thread insert can be spindled and from which the wire thread insert can be spindled off, an installation blade which is movably arranged in the spindle body between an engaged position and a rest position in order to selectively engage the wire thread insert and/or disengage from an engagement or engagement with the wire thread insert, and a torque clutch Consisting of a positive and non-positive fit interlocking upper part and lower part of the clutch, of which the upper part of the clutch is non-rotatably connected to the drive unit and the lower part of the clutch is non-rotatably connected to the spindle body, while with a decoupled relative rotation between the upper part of the clutch and the lower part of the clutch triggered by exceeding a limit torque
  • the above Wire Thread Insert installation tool by virtue of its configuration, first aids in avoiding torque overload conditions when installing or threading the Wire Thread Insert into a threaded hole.
  • the torque coupling used releases the connection between the drive side and the driven side of the installation tool as soon as a critical torque is reached, for example when an axial stop of the installation spindle runs up.
  • an adjustment movement preferably a linear adjustment movement, is simultaneously generated between one of the clutch halves and a movable actuator.
  • These coupling halves are formed by the above-mentioned coupling upper part and the coupling lower part.
  • This axial relative movement between said actuator and the upper coupling part and/or the lower coupling part can be used for a further work step during the installation of the wire thread insert in a threaded bore.
  • This relative axial movement of the actuator preferably finds application in releasing an installation blade of the installation tool from engagement with the wire thread insert.
  • Another alternative is to relocate the installation blade to an engaged position or other mounting position within the installation mandrel and/or on the wire thread insert.
  • a further preferred embodiment consists in that, with the aid of the axial relative movement of the actuator, a further adjustment element is actuated in addition to an installation blade. This actuating element can be used, for example, to release the installation pin from an engagement of the installation spindle.
  • the lower coupling part and the upper coupling part are arranged spring-loaded against one another, so that if the lower coupling part is blocked from rotating via the spindle body, the upper coupling part can be rotated relative to the lower coupling part, with the lower coupling part yielding resiliently.
  • both coupling parts Due to the shape of the mutually facing sides of the lower coupling part and the upper coupling part, both coupling parts form a positive and/or non-positive connection supported by spring preload.
  • the spring preload applied to the coupling parts determines a release torque between the two coupling parts, which causes the connection between the lower part and the upper part of the clutch to be released. This detachment of the coupling parts from one another takes place precisely when said blocking of rotation of the coupling lower part or the coupling upper part occurs.
  • the lower coupling part is connected to the spindle body, so that a rotational blockade of the spindle body leads to a standstill of the lower coupling part.
  • the upper clutch part is rotated further by the drive unit, exceeding a critical torque between the two clutch parts leads to overcoming of the spring preload between the lower clutch part and the upper clutch part.
  • the upper part of the clutch then rotates further in comparison to the lower part of the clutch, as a result of which the torque clutch is released.
  • the spring preload provided between the lower clutch part and the upper clutch part thus opens up the possibility that the lower clutch part can avoid a continued rotation of the upper clutch part by a preferred axial displacement.
  • the upper clutch part includes a link guide with which an axial actuator of the upper clutch part can be displaced axially depending on a direction of rotation of the upper clutch part, with the axial actuator not rotating with the upper clutch part.
  • the axial actuator is a clutch piston that is guided axially in the clutch upper part and has a roller pin that projects radially at least on one side and engages in the link guide.
  • the wire thread insert installation tool is provided such that the spindle for installing the wire thread insert is connected to the lower coupling. Accordingly, the spindle is blocked during installation and thus also the lower part of the coupling as soon as a certain installation depth or an axial stop of the spindle is reached. In this situation, the blocking of the spindle from rotating causes the lower part of the coupling to stop rotating, but does not prevent further rotation of the upper part of the coupling due to the overload torque that occurs.
  • the slotted guide which is positively connected to the clutch piston, causes an axial displacement of the clutch piston.
  • This movement which can be understood as a secondary use of the triggering movement between the upper clutch part and the lower clutch part, is used within the scope of the present invention for the targeted movement or switching or setting of an axial actuator.
  • the movement profile of the axial actuator can be defined as a function of the shape of the link guide, which here preferably specifies a movement path of the engaging roller pin.
  • the link guide defines a curvilinear path, in particular a helical path, in the upper clutch part, which causes a relative axial offset between the upper clutch part and the clutch piston when the upper clutch part rotates relative to the clutch piston.
  • a direction, a size of an axial offset and a speed of an axial offset taking place can be set as a function of the preferred circumferential course of the link guide.
  • the axial offset of the clutch piston can be transmitted to the installation blade via an actuator.
  • the installation blade disposed within the spindle body finds use in installing a wire thread insert and/or uninstalling the wire thread insert or machining the wire thread insert in the threaded opening. Accordingly, the moving actuator and those on the installation blade transmitted motion used to perform installation steps, machining steps, and/or deinstallation steps on a wire thread insert in a threaded hole.
  • the above-mentioned axial offset occurs depending on the direction of rotation of the upper coupling part compared to the lower coupling part in the direction of the spindle body or in the direction of the drive unit.
  • the upper clutch part and the lower clutch part each have a circumferential sequence of at least two counter-rotating ramps adjacent to a common apex, which define an engagement contour between the upper clutch part and the lower clutch part, in the axial and opposite orientation of end faces.
  • the strength of the detachable connection between the upper and lower coupling parts is also determined by the interlocking contours of the facing surfaces or end faces of the upper and lower coupling parts.
  • these surfaces of the upper coupling part and the lower coupling part each have at least one cam, which comprises two ramps running in opposite directions and connected via the common apex.
  • An inclination of these ramps and the spring preload, which presses the upper clutch part and the lower clutch part against one another, define a release torque which is required so that the upper clutch part can slide off in rotation on the lower clutch part, which is preferably locked in rotation.
  • the shaping contour of the mutually facing sides of the upper and lower coupling parts and the strength of the spring preload between the upper and lower coupling parts can be specifically selected and/or adjusted.
  • an angle of inclination of the ramps in combination with the spring preload between the upper clutch part and the lower clutch part determines a limit torque at which a relative rotation between the upper clutch part and the lower clutch part can be generated.
  • the present invention also encompasses the torque coupling employed in the wire thread insert installation tool described above.
  • This torque coupling can also be used for other tools in which a rotating drive unit is used.
  • This Torque coupling has the following features: a positively and non-positively interlocking upper part and lower part of the clutch, of which the upper part or the lower part of the clutch can be connected in a rotationally fixed manner to a drive unit and the other part of the clutch can be connected in a rotationally fixed manner to an output unit, while a decoupled relative rotation between the upper part of the clutch and the lower part of the clutch is triggered by exceeding a limit torque between the upper clutch part and the lower clutch part, a linear relative movement can be generated between the clutch part coupled to the drive unit and an axially movable actuating unit arranged in this clutch part.
  • the torque clutch also includes the property that the lower clutch part and the upper clutch part are spring-biased relative to one another, so that when the lower clutch part is blocked in rotation, the upper clutch part can be rotated relative to the lower clutch part. This configuration ensures that the torque coupling actually releases the connection between the lower part and the upper part of the clutch when a critical torque is exceeded.
  • the upper clutch part preferably comprises a link guide with which an axial actuator of the upper clutch part can be displaced axially relative to the actuator, depending on a direction of rotation of the upper clutch part.
  • the axial actuator is preferably a clutch piston that is guided axially in the upper clutch part and has a roller pin that projects radially at least on one side and engages in the above-mentioned link guide.
  • the link guide is defined as a curvilinear path, in particular a helical path, in the upper clutch part, which causes a relative axial offset between the upper clutch part and the clutch piston when the upper clutch part rotates.
  • this relative axial offset between the upper part of the clutch and the clutch piston this can preferably be transmitted via an actuator to the actuating unit, in particular to an actuating unit arranged inside the output unit.
  • the axial offset preferably takes place depending on the direction of rotation of the upper clutch part compared to the lower clutch part in the direction of the output unit or in the direction of the drive unit.
  • the upper coupling part and the lower coupling part each have a circumferential sequence of at least two in axial and opposed orientation ramps running in opposite directions and adjacent to a common vertex, which define an engagement contour, preferably a direct engagement contour, between the upper coupling part and the lower coupling part.
  • the angle of inclination used for the ramps in the direction of the apex in combination with a spring preload between the upper part and the lower part of the clutch, generates a limit torque at which a relative rotation between the upper part and the lower part of the clutch and a relative displacement between an actuator and the upper part or the lower part of the clutch can be generated.
  • the present invention also discloses an installation method for a wire thread insert in a threaded opening with an installation tool according to any of the embodiments described above.
  • the installation method has the following steps: threading the wire thread insert onto the spindle body in a first direction of rotation of the spindle body, attaching the spindle body with the wire thread insert to the threaded opening and screwing the wire thread insert into the threaded opening using the spindle body by rotating the spindle body in the first direction of rotation until a Stop blocks further axial screwing in of the spindle body, triggering the torque clutch by blocking the spindle body, so that the installation blade is moved into an attack position/operating position via a relative movement to the spindle body or is moved from the operating position to a rest position, and rotating the spindle body in a second position Direction of rotation until the wire thread insert is unscrewed from the spindle body.
  • the preferred installation method for a wire thread insert of the present invention utilizes the advantageous characteristics of the torque coupling installation tool described above.
  • a wire thread insert is usually screwed into a threaded opening with the help of the installation tool until the spindle of the installation tool is blocked in further rotation by a depth stop.
  • This depth stop determines the depth to which the wire thread insert should be installed in the threaded opening.
  • the blocking of the rotary movement of the spindle means that further joint rotation of the upper coupling part and the lower coupling part is prevented due to the releasable positive and non-positive connection between them.
  • the installation method also preferably includes the further step: bending back an installation spigot of the wire thread insert into a thread of the threaded opening by the installation blade, which has been placed in the attacking position, while rotating in the second direction of rotation.
  • the mounting pin is compressed after bending back and the torque coupling is switched over when a limit torque is reached in combination with a displacement of the installation blade from an engagement position on the wire thread insert into a rest position.
  • manual or automatic switching takes place between the first and the second direction of rotation.
  • the installation tool 1 includes a drive unit 10.
  • the drive unit 10 is preferably driven electrically or pneumatically. It also preferably includes a start switch 12 to switch the drive unit 10 on or off. Accordingly, a spindle body 20 begins rotating or stops rotating when the start switch 12 is actuated.
  • the drive unit 10 preferably includes a switch 14 for changing the direction of rotation. If this switch is actuated, preferably in combination with the start switch 12, the direction of rotation of the drive unit 10 is reversed.
  • the spindle body 20 has a threaded section 22 facing away from the drive unit 10 .
  • the wire thread insert to be installed is screwed on or off this.
  • the spindle body 20 has an inner cavity in which a slide 24 is arranged.
  • the slide 24 is axially displaceable via the release of a torque clutch or a clutch arrangement 30, which is explained in more detail below.
  • a built-in blade 28 or the slide 24 preferably adjustably engages from the inside of the spindle body 20 to the outside.
  • the installation end preferably has installation structure to hold a wire-threaded insert on the threaded portion 22 in a rotationally fixed manner.
  • the preferred installation structure for a wire thread insert with a bend back tang is in DE 10 2010 050 735 described and incorporated by reference.
  • the installation structure consists of a radial recess or groove.
  • the built-in blade 28, which engages in a notch of the wire thread insert arranged radially on the inside can also preferably be used as an installation structure.
  • a depth stop 26 is preferably arranged on the threaded section 22 . If the threaded section 22 with wire thread insert up to the depth stop 26 in a threaded opening screwed in, then the depth stop 26 blocks further screwing in and further rotation of the spindle body 20 in the screwing-in direction or installation direction Ri. (S2, S3)
  • the clutch assembly 30 is provided within a housing G in which the spindle body 20 is rotatably held.
  • the coupling arrangement 30 establishes a detachable connection between the drive unit 10 and the spindle body 20 . This detachable connection transfers the rotary movement of the drive unit 10 to the spindle body 20 or interrupts the power flow between the drive unit 10 and the spindle body 20.
  • the torque clutch 30 preferably includes a lower clutch part 32 which is spring-biased against an upper clutch part 34 .
  • the spring preload generates a spring 36.
  • a clutch surface 38, 40 is preferably provided on the upper clutch part 34 and the lower clutch part 32, respectively. These clutch surfaces 38, 40 face each other and are releasably pressed against each other by the spring 36.
  • a positive and a non-positive connection is created between the upper coupling part 34 and the lower coupling part 32, which transmits the rotation of the drive unit 10 to the spindle body 20.
  • each clutch surface 38, 40 includes at least one lobe 39, 41, preferably two, bounded by adjacent valleys. Based on this shape, the clutch faces 38, 40 preferably matingly engage one another.
  • Each cam 39, 41 has an apex via which two ramps inclined in opposite directions are connected to one another.
  • the upper coupling part 34 is connected to the drive unit 10 in a rotationally fixed manner.
  • the lower coupling part 32 is preferably connected to the spindle body 20 in a rotationally fixed manner. At the same time, however, the lower coupling part 32 can be deflected in the axial direction, i.e. in the direction of the spindle body 20, against the force of the spring 36.
  • the limit torque is preferably initially determined by the biasing force of the spring 36 between the upper clutch part 34 and the lower clutch part 32.
  • the coupling surfaces 38, 40 are preferably also profiled or roughened.
  • the clutch surfaces 38,40 have interlocking ridges and valleys as shown in FIGS figures 5 , 6 , 8th are recognizable.
  • a cam is correspondingly formed by two ramps running towards a vertex.
  • the limit torque of the torque clutch 30 can be set as a function of the angle of inclination of the ramps, which run towards the common apex. The steeper the ramps rise to the apex, the higher the limit torque for triggering the torque clutch 30 must be.
  • the clutch base 32 is provided with an axial cavity. This serves to accommodate and move a pin-like slide connection 42.
  • the slide connection 42 preferably serves to transmit a linear movement along the longitudinal axis of the installation tool 1.
  • the movement of a clutch piston 44 within the clutch upper part 34 via the slide 24 onto the installation blade 28 or directly the bed blade 28 transferred.
  • the slide 24 and the slide connection 42 are connected to the spindle body 20 and/or the lower coupling part 32 in a torque-proof manner. As a result, they cannot be twisted against each other.
  • the upper coupling part 34 is preferably provided as a hollow-cylindrical sleeve, at least over an axial partial area.
  • the clutch piston 44 is held in an axially displaceable manner.
  • the clutch piston 44 preferably has at least one roller pin 46 which projects radially outwards.
  • the roller pin 46 is fixedly arranged in the clutch piston 44 .
  • the roller pin 46 is preferably accommodated and guided in a link guide 48 of the upper clutch part 34 .
  • the upper clutch part 34 rotates together with the clutch piston 44 and the lower clutch part 32.
  • the rotation of the clutch piston 44 is based on the rotary entrainment of the roller pin 46 by the link guide 48.
  • the form-fitting connection between the cams 39 , 41 and valleys of the coupling surfaces 38, 40, the non-rotatable connection of the coupling piston 44 to the spindle body 20 is created via the slide connection 42.
  • the clutch piston 44 is displaced in the axial direction during a relative rotation between the clutch piston 44 and the upper clutch part 34 .
  • the strength and the direction of the axial offset of the clutch piston 44 is determined by the slope and the direction of the link guide 48 .
  • the screwing of the wire thread insert into the threaded opening is first shown schematically (S3) until the depth stop 26 blocks the component (not shown).
  • the threaded section 22 preferably has a right-hand thread, so that the drive unit 10 works in a clockwise direction for installation (see arrows in figure 4 ). With a left-hand thread on the threaded section 22, the movements required for driving and installation take place in the opposite direction.
  • the upper coupling part 34 continues to rotate relative to the lower coupling part 32 (see FIG figure 5 ). Since the clutch piston 44 is non-rotatably connected to the lower clutch part 32, the link guide 48 rotates relative to the roller pin 46 arranged therein (S4).
  • the preferred embodiment shown has the link guide 48 a slope in the installation direction R I similar to a left-hand thread. If the link guide 48 is thus rotated to the right around the clutch piston 44, the link guide 48 moves the clutch piston 44 via the roller pin 46 in the installation direction R I . With this preferential axial movement, the slider 24 is axially displaced to displace the bed blade 28 from inside the spindle body 20 to the outside (S4). This preferably prepares the further installation of the wire thread insert with bendable pins, as shown in DE 10 2010 050 735 is described. In general, the installation blade 28 is exhibited by the axial movement of the clutch piston 44 in the installation direction Ri. This motion is also preferably used to eject a mounting tang of a wire threaded insert from a radial groove at the installation end of threaded portion 22 .
  • the link guide 48 preferably has a course similar to a right-hand thread in a clockwise rotating drive unit 10 . In this case, the relative rotation between the lower clutch part 32 and the upper clutch part 34 would cause an axial offset of the clutch piston 44 against the installation direction R I .
  • the link guide 48 In the case of a left-hand rotating drive unit 10, the link guide 48 would have to be inclined correspondingly the other way around, ie with an axial offset in the installation direction Ri similar to a right-hand thread and opposite to the installation direction R I similar to a left-hand thread.
  • the offset in the installation direction R I is also shown schematically in figure 7 illustrated. It can be seen here how the axial offset of the clutch piston 44 is transmitted to the slide 24 and the installation blade 28 via the slide connection 42 . figure 10 shows how a preferred axial offset takes place against the installation direction R I. Since the clutch piston 44, the slide connection 42, the slide 24 and the installation blade 28 are preferably coupled axially, the axial offset of the clutch piston 44 leads to the installation blade 28 being drawn into the spindle body 20.
  • the direction of rotation of the drive unit 10 is preferably reversed (S7). According to a preferred embodiment, this is done by triggering or pressing the start switch 12 and the switch 14 for changing the direction of rotation at the same time. It is also preferable to provide only one switch for this function or to change the direction of rotation automatically. According to a preferred embodiment of the present invention, when the direction of rotation changes, the switch for changing the direction of rotation does not engage. In this way, the handling and use of the installation tool is facilitated.
  • the spindle body 20 rotates counter-clockwise with the installation blade 28 deployed DE 10 2010 050 735 which is incorporated herein by reference, the bendable tang of the wire thread insert is first bent back into the threads of the threaded hole (S5).
  • the rotational blockade of the spindle body 20 also blocks the lower clutch part 32. Accordingly, the upper clutch part 34 continues to rotate relative to the lower clutch part 32 and axially displaces the clutch piston 44 counter to the installation direction R I .
  • the installation blade 28 is released from engagement or attack on the wire thread insert (S6). This releases the locking of the spindle body 20 from rotating, and the threaded portion 22 is stripped from the installed wire thread insert (S9).
  • the installation blade 28 engages the end of the wire thread insert to be upset.
  • This attack is preferably by a frictional connection between the Supports installation blade 28 and the end of the wire thread insert, which may make it difficult to loosen the installation blade 28 by said axial offset. Therefore, it is preferred to precede the above-mentioned axial offset for loosening the connection between the installation blade 28 and the wire thread insert with a counter-rotation opposite to the upsetting rotary movement.
  • This counter-rotation includes an angle of rotation of less than 360°, preferably less than 180° or even less than 90°.
  • This reverse rotation disengages the installation blade 28 from frictional engagement with the end of the wire thread insert to be upset.
  • this counter-rotation relieves the installation blade 28.
  • the above-described axial displacement of the installation blade 28 then takes place, with this movement preferably not being impeded by friction losses.
  • the direction of rotation of the drive unit 10 is preferably first switched to the direction of the thread of the threaded section 22 .
  • a new wire thread insert can thus be threaded onto the threaded section 22 (S1) and subsequently installed.
  • the threaded portion 22 may become jammed in the threaded opening of the component without installing the Wire Thread Insert. Because of the canting, the limit torque of the clutch arrangement 30 is exceeded and the clutch arrangement 30 is released. Accordingly, the installation blade is now in a position in which it could impede removal of the wire thread insert from the threaded opening and/or unwinding of the wire thread insert from the threaded section 22 .
  • the interference suppression block 50 is preferably a pin which is pressed against a flat surface or into a depression or into a groove on the spindle body 20 .
  • the resulting frictional connection between the interference suppression blockage 50 and the spindle body 20 prevents the spindle body 20 from rotating.
  • the direction of rotation of the drive unit 10 is now preferably changed by actuating the start switch 12 and the switch 14 for changing the direction of rotation simultaneously (S7).
  • S7 the direction of rotation simultaneously
  • the threaded section 22 with the wire thread insert is now preferably removed from the threaded opening. It is then preferred that the wire thread insert still on the threaded section 22 is installed again in the threaded opening. Alternatively, it is also preferred to remove the wire thread insert located on the threaded portion 22 and spin on a new wire thread insert. After threading is complete, the newly threaded wire thread insert can be installed into the threaded opening of the component.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Mechanical Operated Clutches (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Bridges Or Land Bridges (AREA)
  • Installation Of Indoor Wiring (AREA)
EP18827108.4A 2018-01-16 2018-12-21 Einbauwerkzeug für einen drahtgewindeeinsatz Active EP3717178B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018100832.5A DE102018100832A1 (de) 2018-01-16 2018-01-16 Einbauwerkzeug für einen Drahtgewindeeinsatz
PCT/EP2018/086579 WO2019141497A1 (de) 2018-01-16 2018-12-21 Einbauwerkzeug für einen drahtgewindeeinsatz

Publications (2)

Publication Number Publication Date
EP3717178A1 EP3717178A1 (de) 2020-10-07
EP3717178B1 true EP3717178B1 (de) 2022-12-14

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EP18827108.4A Active EP3717178B1 (de) 2018-01-16 2018-12-21 Einbauwerkzeug für einen drahtgewindeeinsatz

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US (1) US11648651B2 (es)
EP (1) EP3717178B1 (es)
KR (1) KR102424657B1 (es)
CN (1) CN111655431B (es)
DE (1) DE102018100832A1 (es)
ES (1) ES2938862T3 (es)
HU (1) HUE061309T2 (es)
PL (1) PL3717178T3 (es)
WO (1) WO2019141497A1 (es)

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CN110450092A (zh) * 2019-09-06 2019-11-15 杭叉集团股份有限公司 一种用于叉车安全架的装配工具
DE102019133161A1 (de) * 2019-12-05 2021-06-10 Schaeffler Technologies AG & Co. KG Antriebsstrang mit Überlastdämpfer
KR20220020495A (ko) 2020-08-12 2022-02-21 주식회사 엘지에너지솔루션 퇴화 셀 제조방법 및 퇴화 셀 평가 방법
ES2955783T3 (es) 2020-08-13 2023-12-07 Boellhoff Verbindungstechnik Gmbh Máquina automática de instalación para una herramienta de instalación para un inserto de rosca de alambre y procedimiento de instalación
CN113799057A (zh) * 2021-09-26 2021-12-17 北京中燕建设工程有限公司 一种带力矩测量的压缩机探头安装工具
US20230294257A1 (en) * 2022-03-15 2023-09-21 Toyota Motor Engineering & Manufacturing North America, Inc. Retainer installation tool

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DE102018100832A1 (de) 2019-09-19
WO2019141497A1 (de) 2019-07-25
US11648651B2 (en) 2023-05-16
US20210060746A1 (en) 2021-03-04
CN111655431B (zh) 2022-06-07
PL3717178T3 (pl) 2023-04-17
EP3717178A1 (de) 2020-10-07
ES2938862T3 (es) 2023-04-17
KR20200100842A (ko) 2020-08-26
CN111655431A (zh) 2020-09-11
HUE061309T2 (hu) 2023-06-28
KR102424657B1 (ko) 2022-07-22

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