EP1738087A1 - Method for the production of a catching connection in a linear drive - Google Patents

Method for the production of a catching connection in a linear drive

Info

Publication number
EP1738087A1
EP1738087A1 EP05716343A EP05716343A EP1738087A1 EP 1738087 A1 EP1738087 A1 EP 1738087A1 EP 05716343 A EP05716343 A EP 05716343A EP 05716343 A EP05716343 A EP 05716343A EP 1738087 A1 EP1738087 A1 EP 1738087A1
Authority
EP
European Patent Office
Prior art keywords
rod
adhesive
coupling member
drive
linear drive
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
EP05716343A
Other languages
German (de)
French (fr)
Other versions
EP1738087B1 (en
Inventor
Harald Baur
Martin Rapp
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.)
Festo SE and Co KG
Original Assignee
Festo SE and Co KG
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 Festo SE and Co KG filed Critical Festo SE and Co KG
Publication of EP1738087A1 publication Critical patent/EP1738087A1/en
Application granted granted Critical
Publication of EP1738087B1 publication Critical patent/EP1738087B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1471—Guiding means other than in the end cap
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener
    • Y10T29/49966—Assembling or joining by applying separate fastener with supplemental joining

Definitions

  • the invention relates to a method zi r production of an axially backlash-free driving connection between at least one linearly displaceably guided rod and a parallel linearly displaceably guided guide unit in a linear drive, with a coupling member of the guide unit protruding in front of an end face of the rod and glued to the rod when the driving connection is produced is.
  • a Liirear drive known from EP 0868965 B1 has at least one drive rod which can be displaced relative to the housing of the linear drive and which is coupled in an axially play-free manner with a guide unit which is also linearly displaceable on the housing.
  • the guide unit has a coupling element designed as a yoke part, which projects in front of the drive rod and is screwed to it axially without play in order to produce a driving connection.
  • the components to be connected are first fixed to one another by an adhesive connection so that when the at least one fastening screw is subsequently tightened, there is no longer any deflection between the components to be screwed.
  • a connection that is free of play in the axial direction and at the same time highly loadable is achieved without impairing the ease of movement of the existing guides.
  • the method can be used both when the rod to be coupled to the guide unit is a guide rod, and also when it is a drive rod which, for example - in the case of a fluid-actuated linear drive - with a drive piston or - in the case of an electrolytic linear drive - is coupled with electrically activatable drive means.
  • the adhesive can easily be applied to a joining surface of the coupling member facing the rod, which is not limited on the circumferential side.
  • an embodiment is considered to be particularly advantageous, in which the joining surface of the coupling member facing the rod is formed on
  • FIG. 1 is a perspective view of a linear drive manufactured using the verifier according to the invention
  • Fig. 2 shows the linear drive from Fig. 1 in longitudinal section along section line II-II and
  • FIG. 3 shows the detail marked III in FIG. 2 in ve ---: - enlarged representation.
  • the linear drive 1 shown as an example has ezLn housing 2, in which there is at least one linearly extending receiving space 3, in which a drive piston 4 is received in a linearly displaceable manner.
  • a drive connected to the drive piston 4 and screwed, for example,
  • Rod 5 extends from the drive piston 4 L in an axial direction, passing through it to the outside through an end wall 6 which delimits the receiving space 3 and is preferably realized by a cover.
  • the drive piston 4 axially divides the receiving space 3 into two working chambers 12a, 12b, into each of which a separate fluid channel 13 leads through the housing in order to feed or discharge a pressure medium, for example compressed air, and thereby to drive the drive unit 7 to one by one To drive double arrow indicated first linear movement 14.
  • the drive rod 5 is hollow in the embodiment and therefore tubular. However, it can also consist of solid material. Instead of a construction that can be driven by fluid force, the linear drive can also be designed to be electrically actuated. In this case, for example, an electric motor 15, indicated by dash-dotted lines, can be arranged on the housing 2 and is drivingly coupled to the drive rod 5 via drive means 16, for example a threaded spindle.
  • the .: linear drive can also be designed as an electrodynamic linear direct drive.
  • the drive forces are magnetically transmitted to the drive rod.
  • the end wall 6 is equipped with a guide bush 17, which is penetrated by the drive rod 5 in order to achieve a smooth sliding guide of the latter.
  • the transverse support of the drive rod 5 with respect to the housing 2 at its inner end lying in the receiving space 3 is provided by the drive piston 4, which is expediently equipped on the outer circumference with at least one guide ring 18 which can slide along the inner circumference of the receiving space 3.
  • a guide unit 22 designed in the manner of a slide in the embodiment is guided so as to be linearly displaceable.
  • the linear movement which the guide unit 22 can execute relative to the housing 2 is referred to as the second linear movement 23 and is indicated in FIG. 2 by a double arrow.
  • Their direction runs paraZLlel to the direction of the first linear movement 14 of the drive unit 7.
  • the guide unit 22 extends with a preferably table-shaped guide section 25 along the side next to the housing 2, wherein it overlaps the housing 2 more or less axially according to the current position.
  • a linear guide device 24 arranged between the guide section 25 and the housing 2 ensures the displaceable mounting of the guide unit 22
  • Embodiment shows a central guide rail 28 fastened to the underside of the guide section 25 facing the housing 2 and flanked on the edge side by two outer guide rails 32 attached to the outside of the housing 2, a suitable number of sliding guides being provided between the central guide rail 28 and each outer guide rail 32. and / or rolling elements is provided.
  • the longitudinal axis 33 of the linear guide device 24 runs parallel to the longitudinal axis of the receiving space 3, which coincides with the longitudinal axis 8.
  • the drive unit 7 is coupled to the guide unit 22 without play in the axial direction, that is to say in the direction of the linear movements 14, 23.
  • the latter is realized by a combination of an adhesive connection and a screw connection.
  • the enlarged representation of FIG. 3 provides more details on this.
  • the drive rod 5 rests with its end face 27 with the interposition of a layer of adhesive 34 on a surface section of the coupling member 26 referred to as the joining surface 35.
  • the adhesive 34 ensures a cohesive connection between the aforementioned. Components.
  • the drive rod 5 has a, in particular coaxial, threaded bore 36 which opens out to its end face 27 and into which the shaft 37 of a fastening screw 38 is screwed, which has an axially directed opening 42 of the coupling member 26 from the side opposite the drive rod 5 interspersed.
  • the fastening screw 38 is supported with its screw head 43 on a support surface 44 of the coupling member 26 which faces axially away from the drive rod 5, so that when the fastening screw 28 is tightened the drive rod 5 and the coupling member 26 are firmly clamped with the adhesive 34 arranged therebetween.
  • the support surface 44 is expediently located in a recess of the coupling member 26 which receives the screw head 43 over its entire height.
  • a force transmission to the guide unit 22 takes place by pressing or pulling, which consequently carries out the second linear movement 23 synchronously.
  • the latter can be tapped on the guide unit 22, for example, to shift or position a component of a machine, a gripper used for handling parts or another component.
  • the guide unit 22 is fitted with suitable fasteners. means 45, for example in the form of threaded holes.
  • the two linear movements 14, 23 should be aligned exactly in parallel. If otxne additional measures were to be used to implement the screw connection between the coupling member 26 and the drive rod 5, experience would have shown that the tightening torque introduced in this way would disrupt the parallelism of the two linear movements 14, 23, which would make the linear guide device 24 and the region difficult to move the guide bush 11 and the guide ring 18 would result. This affects the generation of uniform movements, especially in the case of very small linear drives. There would also be increased wear.
  • the exemplary linear drive is now manufactured using a special process that enables full traction transmission using a screw connection, but at the same time ensures smooth operation.
  • the linear drive can be completely assembled apart from the establishment of the entrainment connection between your drive rod 5 and the coupling member 26.
  • a linear drive 1 in which both the drive unit 7 as well as the guide unit 22 are linearly adjustable on the housing 2, but do not yet have a driving connection, so that there is an independent mobility.
  • adhesive 34 is applied to the end face 27 of the drive rod 5 and / or to the joining face 35 of the coupling member 26, and then the two faces are pressed against one another by the opposing action of the guide unit 22 and the drive unit 7.
  • the fastening screw 38 is passed through the opening 42 from the outside and screwed into the threaded bore 36. It is then slightly pulled so that the contact between the coupling member 36 and the drive rod 5 via the adhesive 34 is maintained, but at the same time, but transverse to the direction of displacement of the drive rod 5 and the guide unit 22, a relative mobility between these two components is possible , This mobility can be expressed, as indicated by arrows in FIG. 3, by the fact that the components can be displaced or tilted relative to one another.
  • the entire movement unit 46 comprising the guide unit 22 and drive unit 7 is then relocated one or more times between its two stroke end positions. tiv shifted to the housing 2. This is expediently done by external forces acting on the guide unit 22, either mechanically or manually.
  • This movement of the movement unit 46 takes place with the adhesive 34 not yet cured.
  • the guide unit 22 and the drive unit 7 can align exactly with one another in accordance with the directions of the predetermined first and second linear movements 14, 23.
  • the system is left to rest until the adhesive 34 has hardened.
  • the latter can be done relatively quickly if, for example, a corresponding two-component adhesive or a UV-curable adhesive is used.
  • the adhesive 34 When the adhesive 34 has finally hardened, it takes on the function of a filler or leveling compound which supports the drive rod 5 with respect to the guide unit 22 and holds it in an unchangeable position, even if the fastening screw 38 then finally has the power transmission required for operation required tightening torque is tightened.
  • the screw connection can now be completed without running the risk that the drive rod 5 and the coupling member 26 due to a possible irregularity between see the end face 27 and the joining surface 35 change their relative position.
  • FIG. 3 an end state can be seen in FIG. 3, wherein the guide surface 35 and the end surface 27 run slightly obliquely to one another - which corresponds to the optimal alignment for the exemplary system -, the filled adhesive making this alignment against the tensile force of the fastening screw. _be maintained 38.
  • the coupling member 26 has a smooth, preferably continuously flat shape on the side facing the drive rod 5.
  • the joining surface 35 cooperating with the end face 27 or the adhesive 34 is therefore not limited on the circumference, so that the applied adhesive, which may be displaced during the alignment movement, can flow out unhindered.
  • the coupling member 26 can be provided on the side facing the drive rod 5 with a recess 47 which is concentric with the opening 42 and into which the end face of the drive rod 5 can dip slightly and the bottom of which represents the joining surface 35.
  • a recess 47 which is concentric with the opening 42 and into which the end face of the drive rod 5 can dip slightly and the bottom of which represents the joining surface 35.
  • a guide rod could also be connected to a guide unit, whereby even the guide unit to be connected can have a guide rod as the guide section, which can then be connected according to the invention via a yoke-like coupling element to the other guide rod and / or possibly even an additional drive rod is.
  • the screw connection can also have a plurality of fastening screws if the diameter of the rod to be connected permits this.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)
  • Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

A method of providing a linear drive with an axially play-free entrainment connection between at least one linearly travelling rod (5) and a guide unit able to be moved parallel thereto. Between a coupling member (26), projecting to the fore of the rod (5), of the guide unit and the terminal face (27) of the rod (5) adhesive (34) is applied and then the components are so screwed together that athwart the direction of displacement relative motion is still possible. Then the entire unit is shifted between its two terminal positions even prior to curing of the adhesive (34), the components then aligning themselves. After the adhesive is cured the screw connection is finally drawn tight.

Description

Verfahren zur Herstellung einer Mitnahτneverbindung bei einem Linearantrieb Process for producing a drive connection in a linear drive
Die Erfindung betrifft ein Verfahren zi r Herstellung einer axial spielfreien Mitnahmeverbindung zwischen mindestens einer linear verschiebbar geführten Stange und einer parallel dazu linear verschiebbar geführten Fuhrungseinheit bei einem Linearantrieb, wobei bei hergestellter Mitnahmeverbindung ein Koppelglied der Führungseinheit vor eine Stirnfläche der Stange ragt und mit der Stange verklebt ist.The invention relates to a method zi r production of an axially backlash-free driving connection between at least one linearly displaceably guided rod and a parallel linearly displaceably guided guide unit in a linear drive, with a coupling member of the guide unit protruding in front of an end face of the rod and glued to the rod when the driving connection is produced is.
Ein aus der EP 0868965 Bl bekannter Liiriearantrieb verfügt über mindestens eine relativ zum Gehäuse des Linearantriebes verschiebbare Antriebsstange, die mit einer ebenfalls an dem Gehäuse linear verschiebbar geführten Führungseinheit axial spielfrei bewegungsgekoppelt ist. Zur Verbindung mit der Antriebsstange besitzt die Führungseinheit ein als Jochteil konzipiertes Koppelglied, das vor die Antriebsstange ragt und mit dieser axial spielfrei verschraubt ist, um eine Mitnahmeverbindung herzustellen. Aufgrund von Form- und Lagetoleranzen der einzelnen Komponenten kann das Aufbringen des Anzugs- moments auf die Befestigungsschraube Querkrä-fte zur Folge haben, die die Parallelität von Antriebsstange und Führungseinheit beeinträchtigen, was einen schwergängijeren Lauf der die Antriebsstange und die Führungseinheit beinhaltenden Bewe- 5 gungseinheit zur Folge hat und zu verstärktem Verschleiß sowie einer Reduzierung der Lebensdauer führen- kann. Eine vergleichbare Anordnung geht auch aus der DE 101 16 634 C2 hervor.A Liirear drive known from EP 0868965 B1 has at least one drive rod which can be displaced relative to the housing of the linear drive and which is coupled in an axially play-free manner with a guide unit which is also linearly displaceable on the housing. For connection to the drive rod, the guide unit has a coupling element designed as a yoke part, which projects in front of the drive rod and is screwed to it axially without play in order to produce a driving connection. Due to the shape and position tolerances of the individual components, the application of the tightening moments on the fastening screw result in transverse forces which impair the parallelism of the drive rod and guide unit, which results in a stiff movement of the movement unit containing the drive rod and the guide unit and can lead to increased wear and a reduction in the service life , A comparable arrangement is also apparent from DE 101 16 634 C2.
o Bei einem aus der DE 20316693 Ul bekannten Linearantrieb der eingangs genannten Art versucht man die gescliilderte Problematik dadurch in den Griff zu bekommen, dass auf eine Schraubverbindung verzichtet und stattdessen auf eine reine Klebeverbindung zurückgegriffen wird. Vor allem wenn Zugkräf-5 te zu übertragen sind, geht dies jedoch zu Lasten der Belastbarkeit des Linearantriebes .In the case of a linear drive of the type mentioned at the beginning of DE 20316693 U1, one tries to get a handle on the problems that have been solved by dispensing with a screw connection and instead using a pure adhesive connection. Especially when tensile forces are to be transmitted, this is at the expense of the load capacity of the linear drive.
Die Möglichkeit, zwei Teile durch eine KlebeΛ/erbindung aneinander zu befestigen, wird auch in dem Fachbuch "Der Stirling-o otor, einfach erklärt und leicht gebaut", Dieter Viebach, 1. Auflage 1998, ökobuch-Verlag, Staufen bei Freiburg, Seiten 3, 4, 37 und 51, beschrieben. Dort wird erläutert, dass eine mittels eines Zweikomponenten-Klebers in einem Schwungrad zu befestigende Nabe in dem Schwungrad ausgerichtet werden kann,5 solange der Zweikomponenten-Kleber noch weicti ist. Es ist die Aufgabe der vorliegenden Erfindung, Maßnahmen vorzuschlagen, die bei Verringerung der VerschHeißproblematik eine sehr belastbare Mitnahmeverbindung innerhalb des Kraftflusses der Bewegungseinheit eines Linearantriebes ermögli- chen .The possibility of attaching two parts to one another by means of adhesive bonding is also described in the specialist book "The Stirling-o otor, simply explained and easily built", Dieter Viebach, 1st edition 1998, Ökobuch-Verlag, Staufen bei Freiburg, pages 3, 4, 37 and 51. It is explained there that a hub to be fastened in a flywheel by means of a two-component adhesive can be aligned in the flywheel, 5 as long as the two-component adhesive is still white. It is the object of the present invention to propose measures which, while reducing the problem of wear, enable a very resilient entrainment connection within the force flow of the movement unit of a linear drive.
Gelöst wird diese Aufgabe in Verbindung mit einem Verfahren der eingangs genannten Art dadurch, dass das Koppelglied nach dem Applizieren des Klebstoffes mittels mindestens einer Be- festigungsschraube so axial mit der Stange verschraubt wird, dass quer zur Verschieberichtung Relativbewegungen zwischen dem Koppelglied und der Stange möglich blei- en, dass anschließend, noch vor dem Aushärten des Klebstoffes, die die Führungseinheit und die Stange umfassende Bewegungseinheit axial mindestens einmal zwischen ihren beiden Hubendlagen relativ zum Gehäuse des Linearantriebes verlagert wird, und dass nach dem anschließenden Aushärten des Klebstoffes das endgültige Festziehen der Befestigungsschraube erfolgt.This object is achieved in connection with a method of the type mentioned at the outset in that after the application of the adhesive, the coupling member is screwed axially to the rod by means of at least one fastening screw in such a way that relative movements between the coupling member and the rod remain possible transversely to the direction of displacement - en that, before the adhesive has hardened, the movement unit comprising the guide unit and the rod is axially displaced at least once between its two stroke end positions relative to the housing of the linear drive, and that after the adhesive has subsequently hardened, the fastening screw is finally tightened ,
Auf diese Weise werden die zu verbindenden Komponenten zunächst durch eine Klebeverbindung so aneinander fixiert, dass beim anschließenden Festziehen der mindestens einen Befestigungsschraube keine Auslenkung mehr zwischen den zu verschraubenden Komponenten auftritt. Man erreicht dadurch eine in axialer Richtung spielfreie und zugleich hochbelastbare Verbindung ohne Beeinträchtigung der Leichtcängigkeit der vorhandenen Führungen. Vor dem Aushärten des Klebstoffes wird durch mindestens einmaliges und vorzugsweise mehrmalig-es Hin- und Herbewegen der Bewegungseinheit zwischen den Huberαdlagen eine exakte Ausrichtung zwischen der Führungseinheit ιxnd der Stange erreicht, wobei die in diesem Zusammenhang vorgenomme- ne Vorfixierung durch die mindestens eine Befestigungsschraube die notwendige axiale Mitnahme gewährleistet, ohne die relative Querbeweglichkeit der Komponenten zum Zwecke der gegenseitigen Ausrichtung zu behindern.In this way, the components to be connected are first fixed to one another by an adhesive connection so that when the at least one fastening screw is subsequently tightened, there is no longer any deflection between the components to be screwed. In this way, a connection that is free of play in the axial direction and at the same time highly loadable is achieved without impairing the ease of movement of the existing guides. Before the adhesive hardens by at least once and preferably repeatedly moving the movement unit back and forth between the hub positions, an exact alignment between the guide unit and the rod is achieved, the pre-fixing carried out in this connection ensuring the necessary axial entrainment by the at least one fastening screw, without the to prevent relative transverse mobility of the components for the purpose of mutual alignment.
Das Verfahren kann sowohl angewendet werden, wenn die mit der Führungseinheit zu koppelnde Stange eine Führungsstancje ist, als auch wenn es sich dabei um eine Antriebsstange handelt, die beispielsweise - bei einem fluidbetätigten Linearauαtrieb - mit einem Antriebskolben oder - bei einem elektrisctαen Li- nearantrieb - mit elektrisch aktivierbaren Antriebsmitteln gekoppelt ist.The method can be used both when the rod to be coupled to the guide unit is a guide rod, and also when it is a drive rod which, for example - in the case of a fluid-actuated linear drive - with a drive piston or - in the case of an electrolytic linear drive - is coupled with electrically activatable drive means.
Vorteilhafte Weiterbildungen der Erfindung gehen aus clen Unteransprüchen hervor .Advantageous developments of the invention emerge from the subclaims.
Der Klebstoff lässt sich ohne weiteres an einer der Stange zugewandten Fügefläche des Koppelgliedes applizieren, die um- fangsseitig nicht begrenzt ist. Als besonders vorteiltα.aft wird allerdings eine Ausführungsform angesehen, bei der man die der Stange zugewandte Fügefläche des Koppelgliedes amThe adhesive can easily be applied to a joining surface of the coupling member facing the rod, which is not limited on the circumferential side. However, an embodiment is considered to be particularly advantageous, in which the joining surface of the coupling member facing the rod is formed on
Grund einer Vertiefung vorsieht, in die die Stange ein Stück weit eintauchen kann und in die man den Klebstoff zuvor einbringt .Bottom provides a recess into which the rod is a piece immersed far and into which you put the glue beforehand.
Nachfolgend wird die Erfindung anhand der beiliegenden Zeic-ti- nung näher erläutert. In dieser zeigen:The invention is explained in more detail below with the aid of the attached drawing. In this show:
Fig. 1 einen unter Anwendung des erfindungsgemäßen Verfa-ti- rens hergestellten Linearantrieb in perspektivischer Darstellung,1 is a perspective view of a linear drive manufactured using the verifier according to the invention,
Fig. 2 den Linearantrieb aus Fig. 1 im Längsschnitt gemäß Schnittlinie II-II undFig. 2 shows the linear drive from Fig. 1 in longitudinal section along section line II-II and
Fig. 3 den in Fig. 2 bei III markierten Ausschnitt in ve---:- größerter Darstellung.3 shows the detail marked III in FIG. 2 in ve ---: - enlarged representation.
Der exemplarisch abgebildete Linearantrieb 1 verfügt über ezLn Gehäuse 2, in dem sich mindestens ein sich linear erstreckender Aufnahmeraum 3 befindet, in dem ein Antriebskolben 4 linear verschiebbar aufgenommen ist. Eine mit dem Antriebskol— ben 4 verbundene und beispielsweise verschraubte Antriebs-The linear drive 1 shown as an example has ezLn housing 2, in which there is at least one linearly extending receiving space 3, in which a drive piston 4 is received in a linearly displaceable manner. A drive connected to the drive piston 4 and screwed, for example,
Stange 5 erstreckt sich ausgehend von dem Antriebskolben 4 Ln einer axialen Richtung, wobei sie eine den Aufnahmeraum 3 e-i- nenends begrenzende, vorzugsweise durch einen Deckel realisierte Abschlusswand 6 nach außen hin durchsetzt. Der An- triebskolben 4 bildet zusammen mit der Antriebsstange 5 eine Antriebseinheit 7 mit einer Längsachse 8, die mit der Längsachse der Antriebsstange 5 identisch ist. Der Antriebskolben 4 unterteilt den Aufnahmeraum 3 axial in zwei Arbeitskammern 12a, 12b, in die jeweils ein das Gehäuse durchsetzender gesonderter Fluidkanal 13 führt, um ein Druck- medium, beispielsweise Druckluft, nach Wahl einzuspeisen oderr abzuführen und dadurch die Antriebseinheit 7 zu einer durch einen Doppelpfeil angedeuteten ersten Linearbewegung 14 anzutreiben.Rod 5 extends from the drive piston 4 L in an axial direction, passing through it to the outside through an end wall 6 which delimits the receiving space 3 and is preferably realized by a cover. The drive piston 4, together with the drive rod 5, forms a drive unit 7 with a longitudinal axis 8, which is identical to the longitudinal axis of the drive rod 5. The drive piston 4 axially divides the receiving space 3 into two working chambers 12a, 12b, into each of which a separate fluid channel 13 leads through the housing in order to feed or discharge a pressure medium, for example compressed air, and thereby to drive the drive unit 7 to one by one To drive double arrow indicated first linear movement 14.
Die Antriebsstange 5 ist beim Ausführungsbeispiel hohl und daher rohrförmig ausgebildet. Sie kann allerdings auch aus Vollmaterial bestehen. Anstatt in einer durch Fluidkraft antreibbaren Bauweise kann der Linearantrieb auch elektrisch betätigbar ausgeführt sein. An dem Gehäuse 2 kann in diesem Fall beispielsweise ein strichpunktiert angedeuteter Elektromotor 15 angeordnet sein, der über Antriebsmittel 16, beispielsweise eine Gewindespindel, mit der Antriebsstange 5 antriebsmäßig gekoppelt ist.The drive rod 5 is hollow in the embodiment and therefore tubular. However, it can also consist of solid material. Instead of a construction that can be driven by fluid force, the linear drive can also be designed to be electrically actuated. In this case, for example, an electric motor 15, indicated by dash-dotted lines, can be arranged on the housing 2 and is drivingly coupled to the drive rod 5 via drive means 16, for example a threaded spindle.
Durch entsprechende Ausgestaltung der Antriebsmittel kann der.: Linearantrieb auch als elektrodynamischer Lineardirektantrieb ausgebildet sein. In diesem Falle werden die Antriebskräfte magnetisch auf die Antriebsstange übertragen.By appropriate design of the drive means, the .: linear drive can also be designed as an electrodynamic linear direct drive. In this case, the drive forces are magnetically transmitted to the drive rod.
Die Abschlusswand 6 ist mit einer Führungsbüchse 17 ausgestattet, die von der Antriebsstange 5 durchsetzt wird, um eine leichtgängige Verschiebeführung der Letzteren zu erzielen. Die Querabstützung der Antriebsstange 5 gegenüber dem Gehäuse 2 an ihrem im Aufnahmeraum 3 liegenden inneren Ende übernimmt der Antriebskolben 4, der am Außenumfang zweckmäßigerweise mit mindestens einem Führungsring 18 ausgestattet ist, der am Innenumfang des Aufnahmeraumes 3 entlaneggleiten kann.The end wall 6 is equipped with a guide bush 17, which is penetrated by the drive rod 5 in order to achieve a smooth sliding guide of the latter. The transverse support of the drive rod 5 with respect to the housing 2 at its inner end lying in the receiving space 3 is provided by the drive piston 4, which is expediently equipped on the outer circumference with at least one guide ring 18 which can slide along the inner circumference of the receiving space 3.
Außen am Gehäuse 2 ist eine beim Ausfüh-t-rungsbeispiel schlittenartig ausgebildete Führungseinheit 22 linear verschiebbar geführt. Die Linearbewegung, die die Führungseinheit 22 rela- tiv zum Gehäuse 2 ausführen kann, sei als zweite Linearbewegung 23 bezeichnet und ist in Fig. 2 durch einen Doppelpfeil angedeutet. Ihre Richtung verläuft paraZLlel zur Richtung der ersten Linearbewegung 14 der Antriebseinheit 7.On the outside of the housing 2, a guide unit 22 designed in the manner of a slide in the embodiment is guided so as to be linearly displaceable. The linear movement which the guide unit 22 can execute relative to the housing 2 is referred to as the second linear movement 23 and is indicated in FIG. 2 by a double arrow. Their direction runs paraZLlel to the direction of the first linear movement 14 of the drive unit 7.
Die Führungseinheit 22 erstreckt sich mit einem bevorzugt tischförmig ausgebildeten Führungsabschnitt 25 längsseits neben dem Gehäuse 2, wobei sie das Gehäuse 2 entsprechend der momentanen Position mehr oder weniger weit axial überlappt. An einer Stirnseite des Führungsabschnittes 25 ist ein zweck- mäßigerweise als Jochplatte ausgebildetes Koppelglied 26 angeordnet, das sich quer zu der Längsachse 8 erstreckt und vor die Stirnfläche 27 des außerhalb des Getαäuses 2 liegenden Endabschnittes der Antriebsstange 5 ragt .The guide unit 22 extends with a preferably table-shaped guide section 25 along the side next to the housing 2, wherein it overlaps the housing 2 more or less axially according to the current position. A coupling member 26, which is expediently designed as a yoke plate, is arranged on an end face of the guide section 25 and extends transversely to the longitudinal axis 8 and projects in front of the end face 27 of the end section of the drive rod 5 lying outside the housing 2.
Für die verschiebbare Lagerung der Führui-ngseinheit 22 sorgt eine zwischen dem Führungsabschnitt 25 und dem Gehäuse 2 angeordnete Linearführungseinrichtung 24. Diese beinhaltet beim Ausführungsbeispiel eine an der dem Gehäuse 2 zugewandten Unterseite des Führungsabschnittes 25 befestigte zentrale Führungsschiene 28, die randseitig von zwei außen am Gehäuse 2 angebrachten äußeren Führungsschienen 32 flankiert ist, wobei zwischen der zentralen Führungsschiene 28 und einer jeden äußeren Führungsschiene 32 eine geeignete Anzahl von Gleit- und/oder Wälzelementen vorgesehen ist. Die Längsachse 33 der Linearführungseinrichtung 24 verlauf:t parallel zu der mit der Längsachse 8 zusammenfallenden Längsachse des Aufnahmeraumes 3.A linear guide device 24 arranged between the guide section 25 and the housing 2 ensures the displaceable mounting of the guide unit 22 Embodiment shows a central guide rail 28 fastened to the underside of the guide section 25 facing the housing 2 and flanked on the edge side by two outer guide rails 32 attached to the outside of the housing 2, a suitable number of sliding guides being provided between the central guide rail 28 and each outer guide rail 32. and / or rolling elements is provided. The longitudinal axis 33 of the linear guide device 24 runs parallel to the longitudinal axis of the receiving space 3, which coincides with the longitudinal axis 8.
Die Antriebseinheit 7 ist mit der Fuhrungseinheit 22 in axialer Richtung, also in Richtung der L-iinearbewegungen 14, 23, spielfrei bewegungsgekoppelt. Hierzu liegt zwischen der Antriebsstange 5 und dem vor diese ragenden Koppelglied 26 eine axial spielfreie MitnähmeVerbindung vor. Letztere wird realisiert durch eine Kombination aus einer Klebeverbindung und einer Schraubverbindung. Näheres hierzu vermittelt unter anderem die vergrößerte Darstellung der Fig. 3.The drive unit 7 is coupled to the guide unit 22 without play in the axial direction, that is to say in the direction of the linear movements 14, 23. For this purpose, there is an axially backlash-free driving connection between the drive rod 5 and the coupling member 26 projecting in front of it. The latter is realized by a combination of an adhesive connection and a screw connection. The enlarged representation of FIG. 3 provides more details on this.
Die Antriebsstange 5 liegt mit ihrer- Stirnfläche 27 unter Zwischenschaltung einer Schicht aus Klebstoff 34 an einem als Fügefläche 35 bezeichneten Flächenab>schnitt des Koppelgliedes 26 an. Der Klebstoff 34 sorgt dabei für eine stoffschlüssige Verbindung zwischen den vorgenannten. Komponenten. Zur Realisierung der zusätzlichen Schraubverbindung verfügt die Antriebsstange 5 über eine zu ihrer Stirnfläche 27 ausmündende, insbesondere koaxiale Gewindebohrung 36, in die der Schaft 37 einer Befestigungsschraube 38 eingeschraubt ist, die eine axial gerichtete Durchbrechung 42 des Koppelgliedes 26 von der der Antriebsstange 5 entgegengesetzten Seite her durchsetzt. Dabei stützt sich die Befestigungsschraube 38 mit ihrem Schraubenkopf 43 an einer axial von der Antriebsstange 5 wegweisenden Abstützflache 44 des Koppelgliedes 26 ab, so- dass beim Festziehen der Befestigungsschraube 28 die Antriebsstange 5 und das Koppelglied 26 fest mit dem dazwischen angeordneten Klebstoff 34 verspannt werden.The drive rod 5 rests with its end face 27 with the interposition of a layer of adhesive 34 on a surface section of the coupling member 26 referred to as the joining surface 35. The adhesive 34 ensures a cohesive connection between the aforementioned. Components. To implement the additional screw connection, the drive rod 5 has a, in particular coaxial, threaded bore 36 which opens out to its end face 27 and into which the shaft 37 of a fastening screw 38 is screwed, which has an axially directed opening 42 of the coupling member 26 from the side opposite the drive rod 5 interspersed. The fastening screw 38 is supported with its screw head 43 on a support surface 44 of the coupling member 26 which faces axially away from the drive rod 5, so that when the fastening screw 28 is tightened the drive rod 5 and the coupling member 26 are firmly clamped with the adhesive 34 arranged therebetween.
Die Abstützflache 44 befindet sich zweckmäßigerweise in einer den Schraubenkopf 43 über seine gesamte Höhe aufnehmenden Vertiefung des Koppelgliedes 26.The support surface 44 is expediently located in a recess of the coupling member 26 which receives the screw head 43 over its entire height.
Wird durch entsprechende Betätigung die erste Linearbewegung 14 der Antriebseinheit 7 in der einen oder anderen Richtung hervorgerufen, findet durch Drücken bzw. Ziehen eine Kraftübertragung auf die Führungseinheit 22 statt, die mithin synchron die zweite Linearbewegung 23 ausübt. Letztere kann an der Führungseinheit 22 abgegriffen werden, um beispielsweise eine Komponente einer Maschine, einen zur Handhabung von Tei- len eingesetzten Greifer oder ein sonstiges Bauteil zu verlagern bzw. zu positionieren. Zum lösbaren Anbringen dieser Bauteile ist die Führungseinheit 22 mit geeigneten Befesti- gungsmitteln 45 ausgestattet, beispielsweise in Gest--a.lt von Gewindebohrungen.If the first linear movement 14 of the drive unit 7 is caused in one direction or the other by corresponding actuation, a force transmission to the guide unit 22 takes place by pressing or pulling, which consequently carries out the second linear movement 23 synchronously. The latter can be tapped on the guide unit 22, for example, to shift or position a component of a machine, a gripper used for handling parts or another component. To detachably attach these components, the guide unit 22 is fitted with suitable fasteners. means 45, for example in the form of threaded holes.
Um einen möglichst verschleißarmen Betrieb des Linea-trantrie- bes 1 zu gewährleisten, sollten die beiden Linearbewegungen 14, 23 exakt parallel ausgerichtet sein. Würde man otxne ergänzende Maßnahmen die SchraubVerbindung zwischen dem Koppe1- glied 26 und der Antriebsstange 5 realisieren, würde das hierbei eingeleitete Anzugsmoment allerdings erfahrungsgemäß eine Störung der Parallelität der beiden Linearbewegungen 14, 23 bewirken, was eine Schwergängigkeit in der Linearführungs- einrichtung 24 sowie im Bereich der Führungsbüchse 11 und des Führungsringes 18 zur Folge hätte. Dadurch ist das Hervorrufen gleichförmiger Bewegungen, vor allem bei sehr kleinbauen- den Linearantrieben, beeinträchtigt. Außerdem läge ein erhöhter Verschleiß vor.In order to ensure that the linear drive 1 operates with as little wear as possible, the two linear movements 14, 23 should be aligned exactly in parallel. If otxne additional measures were to be used to implement the screw connection between the coupling member 26 and the drive rod 5, experience would have shown that the tightening torque introduced in this way would disrupt the parallelism of the two linear movements 14, 23, which would make the linear guide device 24 and the region difficult to move the guide bush 11 and the guide ring 18 would result. This affects the generation of uniform movements, especially in the case of very small linear drives. There would also be increased wear.
Der beispielhafte Linearantrieb ist nun nach einem besonderen Verfahren hergestellt, das die volle Zugkraftübertracgung mit Hilfe einer Schraubverbindung ermöglicht, gleichzeitig aber einen leichtgängigen Betrieb gewährleistet.The exemplary linear drive is now manufactured using a special process that enables full traction transmission using a screw connection, but at the same time ensures smooth operation.
Bei diesem Herstellungsverfahren kann der Linearantrieb bis auf die Herstellung der Mitnahmeverbindung zwischen euer An- triebsstange 5 und dem Koppelglied 26 komplett zusamnnengebaut werden. Nach einer Reihe von Herstellungsschritten liegt also ein Linearantrieb 1 vor, bei dem sowohl die Antriebseinheit 7 als auch die Führungs einheit 22 an dem Gehäuse 2 linear verstellbar geführt sind, allerdings noch keine Mitnahmeverbin- dung aufweisen, sodass sich eine voneinander unabhängige Bewegbarkeit ergibt .With this manufacturing method, the linear drive can be completely assembled apart from the establishment of the entrainment connection between your drive rod 5 and the coupling member 26. After a series of production steps, there is therefore a linear drive 1 in which both the drive unit 7 as well as the guide unit 22 are linearly adjustable on the housing 2, but do not yet have a driving connection, so that there is an independent mobility.
Anschließend wird auf die Stirnfläche 27 der Antriebsstange 5 und/oder auf die Fügefläche 35 des Koppelgliedes 26 Klebstoff 34 aufgebracht, und dann werden die beiden Flächen durch entgegengesetzt gerichtete Beaufschlagung von Führungseinheit 22 und Antriebseinheit 7 gegeneinandergedrückt .Subsequently, adhesive 34 is applied to the end face 27 of the drive rod 5 and / or to the joining face 35 of the coupling member 26, and then the two faces are pressed against one another by the opposing action of the guide unit 22 and the drive unit 7.
Xn einem nächsten Schritt wird die Befestigungsschraube 38 von außen her durch die Durchbrechung 42 hindurchgeführt und in die Gewindebohrung 36 eingeschraubt. Sie wird dann leicht a-ngezogen, sodass der Kontakt zwischen dem Koppelglied 36 und cLer Antriebsstange 5 über den Klebstoff 34 gewahrt bleibt, g-leichzeitig aber quer zur Verschieberichtung von Antriebs- stange 5 und Führungseinheit 22 eine relative Beweglichkeit zwischen diesen beiden Komponenten möglich ist. Diese Beweg- lichkeit kann sich, wie dies in Fig. 3 durch Pfeile angedeutet ist, dadurch äußern, dass die Komponenten relativ zueinander verschiebbar oder auch verkippbar sind.In a next step, the fastening screw 38 is passed through the opening 42 from the outside and screwed into the threaded bore 36. It is then slightly pulled so that the contact between the coupling member 36 and the drive rod 5 via the adhesive 34 is maintained, but at the same time, but transverse to the direction of displacement of the drive rod 5 and the guide unit 22, a relative mobility between these two components is possible , This mobility can be expressed, as indicated by arrows in FIG. 3, by the fact that the components can be displaced or tilted relative to one another.
In diesem durch die leicht angezogene Befestigungsschraube 38 vorfixierten Zustand wird dann die gesamte aus Führungseinheit 22 und Antriebseinheit 7 bestehende Bewegungseinheit 46 einmal oder mehrmals zwischen ihren beiden Hubendlagen rela- tiv zum Gehäuse 2 verlagert. Dies geschieht zweckmäßigerweise durch Krafteinwirkung von außen her auf die Führungseinheit 22, entweder maschinell oder manuell.In this state, pre-fixed by the slightly tightened fastening screw 38, the entire movement unit 46 comprising the guide unit 22 and drive unit 7 is then relocated one or more times between its two stroke end positions. tiv shifted to the housing 2. This is expediently done by external forces acting on the guide unit 22, either mechanically or manually.
Diese als Ausrichtbewegung bezeichnete Bewegung der Bewegungseinheit 46 findet bei noch nicht ausgehärtetem Klebstoff 34 statt. Infolgedessen können sich die Führungseinheit 22 und die Antriebseinheit 7 entsprechend den Richtungen der vorgegebenen ersten und zweiten Linearbewegungen 14, 23 exakt zueinander ausrichten.This movement of the movement unit 46, referred to as the alignment movement, takes place with the adhesive 34 not yet cured. As a result, the guide unit 22 and the drive unit 7 can align exactly with one another in accordance with the directions of the predetermined first and second linear movements 14, 23.
Nach Beendigung der Ausrichtbewegung lässt man das System ruhen, bis der Klebstoff 34 ausgehärtet ist. Letzteres kann relativ schnell geschehen, wenn beispielsweise ein entsprechen- der Zweikomponenten-Klebstoff oder ein UV-aushärtbarer Klebstoff verwendet wird.After the alignment movement is complete, the system is left to rest until the adhesive 34 has hardened. The latter can be done relatively quickly if, for example, a corresponding two-component adhesive or a UV-curable adhesive is used.
Ist der Klebstoff 34 letztlich ausgehärtet, übernimmt er die Funktion einer Füll- bzw. Ausgleichsmasse, die die Antriebs- stange 5 gegenüber der Führungseinheit 22 abstützt und unveränderlich in Position hält, auch wenn anschließend die Befestigungsschraube 38 endgültig mit dem für die im Betrieb gewünschte Kraftübertragung erforderlichen Anzugsmoment festgezogen wird. Man kann nun also die SchraubVerbindung vollen- den, ohne Gefahr zu laufen, dass die Antriebsstange 5 und das Koppelglied 26 aufgrund einer möglichen Unregelmäßigkeit zwi- sehen der Stirnfläche 27 und der Fügefläche 35 ihre Relativposition ändern.When the adhesive 34 has finally hardened, it takes on the function of a filler or leveling compound which supports the drive rod 5 with respect to the guide unit 22 and holds it in an unchangeable position, even if the fastening screw 38 then finally has the power transmission required for operation required tightening torque is tightened. The screw connection can now be completed without running the risk that the drive rod 5 and the coupling member 26 due to a possible irregularity between see the end face 27 and the joining surface 35 change their relative position.
Man erkennt insoweit in Fig. 3 einen Endzustand, wobei die Führungsfläche 35 und die Stirnfläche 27 leicht schräg zueinander verlaufen - was der für das beispielhafte System optimalen Ausrichtung entspricht -, wobei der eingefüllte Klebstoff diese Ausrichtung gegen die Zugkraft der Befestigungs- sch.rau._be 38 aufrechterhält.In this respect, an end state can be seen in FIG. 3, wherein the guide surface 35 and the end surface 27 run slightly obliquely to one another - which corresponds to the optimal alignment for the exemplary system -, the filled adhesive making this alignment against the tensile force of the fastening screw. _be maintained 38.
Beim Ansführungsbeispiel verfügt das Koppelglied 26 an der der Antriebsstange 5 zugewandten Seite über eine glattflächige, bevorzugt durchgehend ebene Gestalt. Die mit der Stirnfläche 27 bzw. dem Klebstoff 34 zusammenwirkende Fügefläche 35 ist daher umfangsseitig nicht begrenzt, sodass der appli- zierte Klebstoff, welcher bei der Ausrichtbewegung eventuell verdrängt wird, ungehindert ausfließen kann.In the exemplary embodiment, the coupling member 26 has a smooth, preferably continuously flat shape on the side facing the drive rod 5. The joining surface 35 cooperating with the end face 27 or the adhesive 34 is therefore not limited on the circumference, so that the applied adhesive, which may be displaced during the alignment movement, can flow out unhindered.
Andererseits kann es von Vorteil sein, den Klebstoff 34 in gewisser Weise nach dem Aufbringen mechanisch zu fixieren. Ist dies gewünscht, kann das Koppelglied 26 an der der Antriebsstange 5 zugewandten Seite mit einer zu der Durchbrechung 42 konzentrischen Vertiefung 47 versehen werden, in die die Stirnseite der Antriebsstange 5 geringfügig eintauchen kann und deren Grund die Fügefläche 35 darstellt. Eine solche alternative Bauform ist in Fig. 3 strichpunktiert angedeutet. Das erläuterte Verfahren lässt sich nicht nur einsetzen, um eine Antriebsstange bezüglich einer Führungseinheit 22 auszurichten. In gleicher Weise könnte auch eine Führungsstange mit einer Führungseinheit verbunden werden, wobei selbst die zu verbindende Führungseinheit als Führungsabschnitt eine Führungsstange aufweisen kann, die dann zweckmäßigerweise über ein jochartiges Koppelglied mit der anderen Führungsstange und/oder eventuell sogar einer zusätzlichen Antriebs- stange er indungsgemäß verbindbar ist.On the other hand, it can be advantageous to fix the adhesive 34 mechanically in some way after the application. If this is desired, the coupling member 26 can be provided on the side facing the drive rod 5 with a recess 47 which is concentric with the opening 42 and into which the end face of the drive rod 5 can dip slightly and the bottom of which represents the joining surface 35. Such an alternative design is indicated by dash-dotted lines in FIG. 3. The explained method can not only be used to align a drive rod with respect to a guide unit 22. In the same way, a guide rod could also be connected to a guide unit, whereby even the guide unit to be connected can have a guide rod as the guide section, which can then be connected according to the invention via a yoke-like coupling element to the other guide rod and / or possibly even an additional drive rod is.
Die Schraiαbverbindung kann anstelle nur einer Befestigungsschraube 38 auch mehrere Befestigungsschrauben aufweisen, wenn dies der Durchmesser der zu verbindenden Stange zulässt. Instead of only one fastening screw 38, the screw connection can also have a plurality of fastening screws if the diameter of the rod to be connected permits this.

Claims

Ansprüche Expectations
1. Verfahren zur Herstellung einer axial spielfreien Mit- nahmeverbincLung zwischen mindestens einer linear verschiebbar geführten Stange (5) und einer parallel dazu linear verschiebbar geführten Führungseinheit (22) bei einem Linearan- trieb (1) , wobei bei hergestellter Mitnahmeverbindung ein Koppelglied (26) der Führungseinheit (22) vor eine Stirnfläche (27) der Stange (5) ragt und mit der Stange (5) verklebt ist, dadurch gekennzeichnet, dass das Koppelglied (26) nach dem Appliziexen des Klebstoffes (34) mittels mindestens einer Befestigungs chraube (38) so axial mit der Stange (5) verschraubt wird, dass quer zur Verschieberichtung Relativbewegungen zwischen dem Koppelglied (26) und der Stange (5) möglich bleiben, dass anschließend, noch vor dem Aushärten des Klebstoffes (34) , die die Führungseinheit (22) und die Stange (5) umfassende Bewegungseinheit (46) axial mindestens einmal zwischen ihren beiden Hubendlagen relativ zum Gehäuse (2) des Linearantrie-oes (1) verlagert wird, und dass nach dem anschließenden Aushärten des Klebstoffes das endgültige Festziehen der Befestigungsschraube (38) erfolgt. 1. Method for producing an axially backlash-free driving connection between at least one linearly displaceably guided rod (5) and a guide unit (22) guided linearly displaceably parallel thereto in the case of a linear drive (1), a coupling member (26) being produced when the driving connection is made. the guide unit (22) protrudes in front of an end face (27) of the rod (5) and is glued to the rod (5), characterized in that the coupling member (26) after the application of the adhesive (34) by means of at least one fastening screw ( 38) is screwed axially to the rod (5) in such a way that relative movements between the coupling member (26) and the rod (5) remain possible transversely to the direction of displacement, so that, before the adhesive (34) has hardened, the guide unit ( 22) and the movement unit (46) comprising the rod (5) is displaced axially at least once between its two stroke end positions relative to the housing (2) of the linear drive (1) and that after the adhesive has subsequently hardened, the fastening screw (38) is finally tightened.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass man die Befestigungsschraube (38) mit ihrem Schaft (37) durch eine Durchbrechung (42) des Koppelgliedes (26) hindurchsteckt und in eine zur Stirnfläche (27) ausmündende Gewindebohrung (36) der Stange (5) einschraubt.2. The method according to claim 1, characterized in that the fastening screw (38) with its shaft (37) is inserted through an opening (42) of the coupling member (26) and into a threaded bore (36) opening out to the end face (27) of the rod (5) screwed in.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass man die der Stange (5) zugewandte Fügefläche (35) am Grund einer: das stirnseitige Eintauchen der Stange (5) er- möglichenden Vertiefung (47) des Koppelgliedes (26) vorsieht, in die man zweckmäßigerweise den Klebstoff (34) einbringt.3. The method according to claim 1 or 2, characterized in that the joining surface (35) facing the rod (5) is provided at the bottom of a depression (47) of the coupling member (26) which enables the end-side immersion of the rod (5) , in which one expediently introduces the adhesive (34).
4. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass man als der Stange (5) zugewandte Fügefläche (35) einen umfangsseitig begrenzten Flächenabschnitt des Koppel- gliedes (26) vorsieht .4. The method according to claim 1 or 2, characterized in that as the rod (5) facing joining surface (35) provides a circumferentially limited surface portion of the coupling member (26).
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass man die Bewegungseinheit (46) vor dem Aus- härten des Klebstoffes (34) mehrmals zwischen ihren Hubendlagen hin- und b_erbewegt .5. The method according to any one of claims 1 to 4, characterized in that one moves the movement unit (46) before the curing of the adhesive (34) several times back and forth between its stroke end positions.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass mindestens eine Stange (5) von einer An- triebsstange des Linearantriebes (1) gebildet ist. 6. The method according to any one of claims 1 to 5, characterized in that at least one rod (5) is formed by a drive rod of the linear drive (1).
7. Verfahren nach einem der Ansprüche 1 bis 6, gekennzeichnet durch eine Anwendung bei einem durch Fluidkraft oder elektrisch, angetriebenen Linearantrieb (1) .7. The method according to any one of claims 1 to 6, characterized by an application in a linear drive (1) driven by fluid power or electrically.
5 8. Verfa±-ren nach einem der Ansprüche 1 bis 7, gekennzeichnet durch eine Anwendung bei einem Linearantrieb (1), dessen Führungseinheit (22) schlittenartig ausgebildet ist.5 8. Verfa ± -ren according to one of claims 1 to 7, characterized by an application in a linear drive (1), the guide unit (22) is formed like a slide.
9. Verfahren nach einem der Ansprüche 1 bis 8, gekennzeich-o net durch eine Anwendung bei einem Linearantrieb (1), dessen Koppelglied (26) als Jochplatte ausgebildet ist. 9. The method according to any one of claims 1 to 8, gekennzeich-o net by an application to a linear drive (1), the coupling member (26) is designed as a yoke plate.
EP05716343A 2004-04-13 2005-03-24 Method for the production of a catching connection in a linear drive Not-in-force EP1738087B1 (en)

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PCT/EP2005/003130 WO2005100808A1 (en) 2004-04-13 2005-03-24 Method for the production of a catching connection in a linear drive

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Also Published As

Publication number Publication date
WO2005100808A1 (en) 2005-10-27
DE102004017896A1 (en) 2005-11-03
CN100578026C (en) 2010-01-06
US20070186766A1 (en) 2007-08-16
EP1738087B1 (en) 2007-11-14
DE502005001982D1 (en) 2007-12-27
CN1942680A (en) 2007-04-04
US7845060B2 (en) 2010-12-07
ATE378526T1 (en) 2007-11-15

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