EP1738087B1 - Procede de production d'une liaison d'entrainement dans un systeme de commande lineaire - Google Patents

Procede de production d'une liaison d'entrainement dans un systeme de commande lineaire Download PDF

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Publication number
EP1738087B1
EP1738087B1 EP05716343A EP05716343A EP1738087B1 EP 1738087 B1 EP1738087 B1 EP 1738087B1 EP 05716343 A EP05716343 A EP 05716343A EP 05716343 A EP05716343 A EP 05716343A EP 1738087 B1 EP1738087 B1 EP 1738087B1
Authority
EP
European Patent Office
Prior art keywords
rod
adhesive
coupling member
linear drive
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.)
Not-in-force
Application number
EP05716343A
Other languages
German (de)
English (en)
Other versions
EP1738087A1 (fr
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/fr
Application granted granted Critical
Publication of EP1738087B1 publication Critical patent/EP1738087B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 for producing an axially play-free driving connection between at least one linearly displaceably guided rod and a linearly displaceably guided parallel guide unit in a linear drive, wherein when manufactured driving connection, a coupling member of the guide unit projects in front of an end face of the rod and is glued to the rod ,
  • One from the EP 0868965 B1 known linear drive has at least one relative to the housing of the linear drive displaceable drive rod, which is axially coupled movement-free coupled with a likewise guided linearly displaceable on the housing guide unit.
  • the guide unit has a yoke member designed as a coupling member which projects in front of the drive rod and is bolted to this axially backlash to produce a driving connection. Due to the shape and position tolerances of the individual components, the application of the tightening torque transverse forces on the fastening screw interfere with the parallelism of the drive rod and the guide unit, resulting in a more sluggish movement of the moving unit containing the drive rod and the guide unit, and may lead to increased wear and life. A similar arrangement also goes from the DE 101 16 634 C2 out.
  • the components to be joined are first fixed together by an adhesive connection to each other so that during the subsequent tightening of the at least one fastening screw no deflection between the components to be screwed occurs.
  • This achieves a play in the axial direction and at the same time highly resilient connection without affecting the smooth running of the existing guides.
  • the adhesive is cured achieved by at least once and preferably repeated reciprocating the movement unit between the Hubendlagen an exact alignment between the guide unit and the rod, wherein the Vorfix ist made in this context by the at least one fastening screw ensures the necessary axial entrainment, without the relative transverse mobility of the components for the purpose of mutual alignment.
  • the method can be used both when the rod to be coupled to the guide unit is a guide rod, and when it is a drive rod, for example - in a fluid-actuated linear drive - with a drive piston or - in an electric linear drive - with electric activatable drive means is coupled.
  • the adhesive can be readily applied to one of the rod-facing joining surface of the coupling member, which is not limited on the circumference. Particularly advantageous, however, an embodiment is considered, in which one provides the rod facing the joining surface of the coupling member at the bottom of a depression into which the rod a piece can dive far and in which you bring the adhesive before.
  • the exemplified linear drive 1 has a housing 2, in which there is at least one linearly extending receiving space 3, in which a drive piston 4 is received linearly displaceable.
  • a connected to the drive piston 4 and, for example, screwed drive rod 5 extends from the drive piston 4 in an axial direction, wherein it passes through the receiving space 3 at one end limiting, preferably realized by a cover end wall 6 to the outside.
  • the drive piston 4 forms, together with the drive rod 5, 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 divides the receiving space 3 axially in two working chambers 12a, 12b, in each of which a housing passing through the separate fluid channel 13 leads to feed or discharge a pressure medium, such as compressed air, and thereby drive unit 7 to a direction indicated by a double arrow to drive first linear movement 14.
  • a pressure medium such as compressed air
  • the drive rod 5 is hollow in the embodiment and therefore tubular. However, it can also consist of solid material. Instead of being drivable by fluid force construction of the linear drive can also be made electrically operated.
  • a dot-dash line indicated electric motor 15 may be arranged, which is drivingly coupled via drive means 16, for example a threaded spindle, with the drive rod 5.
  • the linear drive can also be designed as an electrodynamic linear direct drive.
  • the driving forces are transmitted magnetically to the drive rod.
  • the end wall 6 is provided with a guide bushing 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 relative to the housing 2 at its lying in the receiving space 3 inner end takes over the drive piston 4, which is expediently equipped with at least one guide ring 18 on the outer circumference, which can slide along the inner circumference of the receiving space 3.
  • a slide-like design guide unit 22 is guided linearly displaceable in the embodiment.
  • the linear movement that can perform the guide unit 22 relative to the housing 2 is referred to as a second linear movement 23 and is indicated in Fig. 2 by a double arrow. Their direction runs parallel 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 portion 25 alongside next to the housing 2, wherein it overlaps the housing 2 more or less axially corresponding to the current position.
  • a suitably designed as a yoke plate coupling member 26 is arranged, which extends transversely to the longitudinal axis 8 and protrudes in front of the end face 27 of lying outside the housing 2 end portion of the drive rod 5.
  • the displaceable mounting of the guide unit 22 is ensured by a linear guide device 24 arranged between the guide section 25 and the housing 2 Embodiment one on the housing 2 facing the underside of the guide portion 25 fixed central guide rail 28, which is flanked on the outside by two outside of the housing 2 mounted outer guide rails 32, wherein between the central guide rail 28 and each outer guide rail 32 a suitable number of sliding and / or rolling elements is provided.
  • the longitudinal axis 33 of the linear guide device 24 extends parallel to the longitudinal axis of the receiving space 3 coinciding with the longitudinal axis 8.
  • the drive unit 7 is motion-coupled to the guide unit 22 in the axial direction, that is, in the direction of the linear movements 14, 23, without play.
  • the latter is realized by a combination of an adhesive connection and a screw connection.
  • the drive rod 5 rests with its end face 27 with the interposition of a layer of adhesive 34 on a designated as the joining surface 35 surface portion of the coupling member 26.
  • the adhesive 34 ensures a cohesive connection between the aforementioned components.
  • the drive rod 5 has an opening to its end face 27, in particular coaxial threaded bore 36 into which the shaft 37 of a fastening screw 38 is screwed, the axially directed opening 42 of the coupling member 26 of the drive rod 5 opposite side interspersed.
  • the fastening screw 38 is supported with its screw head 43 on an axially away from the drive rod 5 supporting surface 44 of the coupling member 26 so that when tightening the fastening screw 28, the drive rod 5 and the coupling member 26 are firmly clamped with the adhesive 34 disposed therebetween.
  • the support surface 44 is expediently in a recess of the coupling member 26 receiving the screw head 43 over its entire height.
  • a force transmission to the guide unit 22 takes place by pressing or pulling, which consequently exerts the second linear movement 23 synchronously.
  • the latter can be tapped on the guide unit 22 in order to displace or position, for example, a component of a machine, a gripper used for handling parts or another component.
  • the guide unit 22 with suitable fastening means 45 equipped, for example in the form of threaded holes.
  • the two linear movements 14, 23 should be aligned exactly parallel. If one were to realize the screw connection between the coupling member 26 and the drive rod 5 without supplementary measures, the torque introduced would, however, experience a disturbance of the parallelism of the two linear movements 14, 23 causing a stiffness in the linear guide device 24 and in the guide bushing 17 and of the guide ring 18 would result. This impairs the generation of uniform movements, especially in the case of very small linear drives. In addition, there would be an increased wear.
  • the exemplary linear actuator is now made by a special process that allows full transfer of tensile force by means of a screw connection, but at the same time ensures smooth operation.
  • the linear drive can be completely assembled except for the preparation of the driving connection between the 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 guided linearly adjustable on the housing 2, but still have no driving connection, so that there is an independent mobility.
  • the fastening screw 38 is passed from the outside through the opening 42 and screwed into the threaded hole 36. It is then tightened slightly, so that the contact between the coupling member 36 and the drive rod 5 is maintained via the adhesive 34, but at the same time transversely to the direction of drive rod 5 and guide unit 22 relative mobility between these two components is possible.
  • This mobility can, as indicated by arrows in FIG. 3, be expressed by the fact that the components are displaceable relative to each other or else tiltable.
  • This movement referred to as the alignment movement, of the movement unit 46 takes place when the adhesive 34 has not yet cured.
  • the guide unit 22 and the drive unit 7 can exactly align with each other according to the directions of the predetermined first and second linear movements 14, 23.
  • the system After completion of the alignment movement, the system is allowed to rest until the adhesive 34 has cured.
  • 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 finally cured, it takes over the function of a filling or leveling compound, which supports the drive rod 5 relative to the guide unit 22 and holds invariably in position, even if subsequently the fastening screw 38 finally with the required for the operation of power transmission torque required is tightened. So you can now complete the screw without running the risk that the drive rod 5 and the coupling member 26 due to a possible irregularity between the end face 27 and the joining surface 35 change their relative position.
  • Fig. 3 is a final state, wherein the guide surface 35 and the end face 27 slightly oblique to each other - which corresponds to the exemplary system optimal alignment -, wherein the filled adhesive maintains this alignment against the tensile force of the fastening screw 38.
  • the coupling member 26 has on the drive rod 5 side facing a smooth-surfaced, preferably continuous planar shape.
  • the joining surface 35 cooperating with the end face 27 or the adhesive 34 is therefore not circumferentially bounded, so that the applied adhesive, which is possibly displaced during the alignment movement, can flow out unhindered.
  • the coupling member 26 may be provided on the drive rod 5 side facing with a recess 42 concentric recess 47 into which the front side of the drive rod 5 can dip slightly and their reason is the joint surface 35.
  • Such an alternative design is indicated in phantom in Fig. 3.
  • the described method can not only be used to align a drive rod with respect to a guide unit 22.
  • a guide rod could also be connected to a guide unit, wherein even the guide unit to be connected can have a guide rod as a guide section, which can then be connected according to the invention via a yoke-like coupling member to the other guide rod and / or possibly even an additional drive rod.
  • the screw can have instead of only one fastening screw 38 and a plurality of fastening screws, if allowed by the diameter of the rod to be connected.

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  • 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)

Claims (9)

  1. Procédé d'établissement d'une liaison d'entraînement sans jeu axial entre au moins une tige (5) guidée de manière mobile et linéaire et une unité de guidage (22) guidée de manière mobile et linéaire parallèlement à celle-ci dans un entraînement linéaire (1), un organe d'accouplement (26) de l'unité de guidage (22) dépassant d'une surface frontale (27) de la tige (5) quand la liaison d'entraînement est établie et étant collé à la tige (5), caractérisé en ce que l'organe d'accouplement (26) est, après l'application de l'adhésif (34), vissé axialement à la tige (5) de telle manière que des mouvements relatifs transversalement à la direction de déplacement demeurent possibles entre l'organe d'accouplement (26) et la tige (5), en ce qu'ensuite, mais avant le durcissement de l'adhésif (34), l'unité de déplacement (46) comprenant l'unité de guidage (22) et la tige (5) est déplacée axialement au moins une fois entre ses deux positions de fin de course par rapport au boîtier (2), et en ce qu'après le durcissement ultérieur de l'adhésif a lieu le serrage définitif de la vis de fixation (38).
  2. Procédé selon la revendication 1, caractérisé en ce que l'on enfonce la vis de fixation (38) avec sa tige (37) à travers un passage (42) de l'organe d'accouplement (26) et on la visse dans un perçage fileté (36) de la tige (5) débouchant dans la surface frontale (27).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on prévoit la surface de jonction (35) tournée vers la tige (5) au fond d'un renfoncement (47) de l'organe d'accouplement (26) permettant l'enfoncement frontal de la tige (5), renfoncement dans lequel on applique de manière avantageuse l'adhésif (34).
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on prévoit comme surface de jonction (35) tournée vers la tige (5) une portion de surface de l'organe d'accouplement (26) limitée périphériquement.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'on déplace l'unité de déplacement (46) plusieurs fois en va et vient entre ses positions de fin de course avant le durcissement de l'adhésif (34).
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'au moins une tige (5) est formée par une tige d'entraînement de l'entraînement linéaire (1).
  7. Procédé selon l'une des revendications 1 à 6, caractérisé par une application dans un entraînement linéaire (1) entraîné par la force d'un fluide ou électriquement.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé par une application dans un entraînement linéaire (1) dont l'unité de guidage (22) est conformée à la manière d'un chariot.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé par une application dans un entraînement linéaire (1) dont l'organe d'accouplement (26) est conformé en plaque frontale de liaison.
EP05716343A 2004-04-13 2005-03-24 Procede de production d'une liaison d'entrainement dans un systeme de commande lineaire Not-in-force EP1738087B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004017896A DE102004017896A1 (de) 2004-04-13 2004-04-13 Verfahren zur Herstellung einer Mitnahmeverbindung bei einem Linearantrieb
PCT/EP2005/003130 WO2005100808A1 (fr) 2004-04-13 2005-03-24 Procede de production d'une liaison d'entrainement dans un systeme de commande lineaire

Publications (2)

Publication Number Publication Date
EP1738087A1 EP1738087A1 (fr) 2007-01-03
EP1738087B1 true EP1738087B1 (fr) 2007-11-14

Family

ID=34961875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05716343A Not-in-force EP1738087B1 (fr) 2004-04-13 2005-03-24 Procede de production d'une liaison d'entrainement dans un systeme de commande lineaire

Country Status (6)

Country Link
US (1) US7845060B2 (fr)
EP (1) EP1738087B1 (fr)
CN (1) CN100578026C (fr)
AT (1) ATE378526T1 (fr)
DE (2) DE102004017896A1 (fr)
WO (1) WO2005100808A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013013273A1 (de) 2013-08-09 2015-02-12 Festo Ag & Co. Kg Lineareinheit und Verfahren zu ihrer Herstellung
DE102019004305A1 (de) * 2019-06-18 2020-12-24 Festo Ag & Co. Kg Lineareinheit und Verfahren zum Herstellen einer Lineareinheit

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6119050B2 (ja) * 2013-05-28 2017-04-26 Smc株式会社 流体圧シリンダ
JP2015212560A (ja) * 2014-05-02 2015-11-26 Smc株式会社 流体圧シリンダ
CN114591006A (zh) * 2020-12-07 2022-06-07 江东科技有限公司 一种拉丝模具同心度调节装置及调节方法
CN116379039B (zh) * 2023-05-06 2024-01-16 无锡市一源液压机械有限公司 一种双行程限位液压缸

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US4607893A (en) * 1985-01-11 1986-08-26 Detroit Edge Tool Company Machine slide bearing assembly
TW320231U (en) * 1993-10-12 1997-11-11 Smc Kk Actuater having a slide table and linear guiding mechanism
DE29706098U1 (de) 1997-04-05 1997-05-28 Festo Kg Schlitten-Antriebsvorrichtung
JP4228356B2 (ja) * 1998-04-08 2009-02-25 Ｓｍｃ株式会社 ガイド機構
JP2001116100A (ja) * 1999-10-18 2001-04-27 Smc Corp アクチュエータ
DE10116634C2 (de) * 2001-04-04 2003-08-14 Schunk Gmbh & Co Kg Führungseinrichtung
DE20316693U1 (de) * 2003-10-29 2004-01-15 Bosch Rexroth Teknik Ab Verbindungsanordnung von Führungsstäben mit einer Grundplatte
ATE327077T1 (de) * 2004-02-07 2006-06-15 Festo Ag & Co Elektrischer linearantrieb mit einer steckkupplung zwischen einem spindeltrieb und einem motormodul
ATE459122T1 (de) * 2007-08-29 2010-03-15 Festo Ag & Co Kg Elektrische linearantriebsvorrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013013273A1 (de) 2013-08-09 2015-02-12 Festo Ag & Co. Kg Lineareinheit und Verfahren zu ihrer Herstellung
DE102013013273B4 (de) * 2013-08-09 2015-08-20 Festo Ag & Co. Kg Lineareinheit und Verfahren zu ihrer Herstellung
DE102019004305A1 (de) * 2019-06-18 2020-12-24 Festo Ag & Co. Kg Lineareinheit und Verfahren zum Herstellen einer Lineareinheit
DE102019004305B4 (de) 2019-06-18 2022-11-03 Festo Ag & Co. Kg Lineareinheit und Verfahren zum Herstellen einer Lineareinheit

Also Published As

Publication number Publication date
CN1942680A (zh) 2007-04-04
WO2005100808A1 (fr) 2005-10-27
CN100578026C (zh) 2010-01-06
US7845060B2 (en) 2010-12-07
DE502005001982D1 (de) 2007-12-27
US20070186766A1 (en) 2007-08-16
EP1738087A1 (fr) 2007-01-03
DE102004017896A1 (de) 2005-11-03
ATE378526T1 (de) 2007-11-15

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