EP1402188B1 - Working cylinder - Google Patents

Working cylinder Download PDF

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Publication number
EP1402188B1
EP1402188B1 EP02754684A EP02754684A EP1402188B1 EP 1402188 B1 EP1402188 B1 EP 1402188B1 EP 02754684 A EP02754684 A EP 02754684A EP 02754684 A EP02754684 A EP 02754684A EP 1402188 B1 EP1402188 B1 EP 1402188B1
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EP
European Patent Office
Prior art keywords
cylinder
cylinder tube
profile section
operating cylinder
cylinder according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP02754684A
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German (de)
French (fr)
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EP1402188A1 (en
Inventor
Dieter Waldmann
Uwe Mödinger
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Festo SE and Co KG
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Festo SE and Co KG
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Publication of EP1402188A1 publication Critical patent/EP1402188A1/en
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    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means
    • 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
    • F15B15/1428—Cylinders
    • 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
    • F15B15/1438—Cylinder to end cap assemblies

Definitions

  • the invention relates to a working cylinder, as in particular can be used in the field of pneumatics or hydraulics is, with one extending between two cylinder covers Cylinder tube and with several along the outer circumference the cylinder tube arranged distributed in the circumferential direction and with the two Cylinder covers tensioned tie rods, of which at least one formed by a profile part, which is located in the Circumferential direction of the cylinder tube along a piece whose outer periphery extends and by its profiling Additional functional agent for performing at least one additional function set are.
  • Known working cylinders have one between two Cylinder covers extending cylinder tube, as a profile tube is formed, which due to its profiling certain additional functions allows, for example, the attachment from sensors in mounting grooves or the bushing of actuating fluid through integrated channels.
  • specially in one embodiment as aluminum extruded profile is a very cost-effective integration of numerous additional functions possible.
  • the working cylinder combines the precise production possibilities conventional tie rod cylinder with the most cost-effective Integration option for additional functions of equipped with a profiled cylinder tube working cylinder, so that one could speak of a hybrid cylinder.
  • the cylinder tube can be easily produced via a Geometry, in particular a cylindrical and preferably circular cylindrical design, but at least a tie rod not in the known manner as Pull rod is formed, but as a piece far extending along the outer circumference of the cylinder tube, specially profiled component (profile part), which at its the Cylinder tube facing inside over a to the curvature the outer contour of the cylinder tube adapted inner surface has and so formed in terms of its profiling is that additive agents are made that the Exercise at least one additional function.
  • Such Additional function may be, for example, the Attachment of sensors, cylinder accessories and / or the Cylinders allowed themselves, or in the provision of passageways for the passage of cables and / or hoses and / or one for the operation of the working cylinder provided actuating fluid.
  • the circumferential extent of a respective profile part is suitably chosen so that it is over at least 45 ° and preferably over at least 90 ° of the outer periphery the cylinder tube extends, with a particularly convenient Extension range between 90 ° and 180 ° of the circumferential extent of the cylinder tube is located.
  • the inner surface is in particular so arched that you Radius of curvature equal or slightly larger fails as the radius of curvature of the cylinder tube in the assigned Area.
  • the profile part concerned radially at least slightly spaced apart with respect to the outer surface of the cylinder tube is.
  • the working cylinder has particularly compact dimensions, if at least one and preferably each profile part seen arcuately curved in cross-section is, with the concave portion facing the cylinder tube is.
  • An embodiment of at least one is particularly advantageous and in particular all profile parts as extruded parts made of aluminum material.
  • an education as a mold part, this particular consisting made of plastic material.
  • the working cylinder shown in Fig. 1 with shortened length dimensions has two spaced-apart, first and second cylinder cover 2a, 2b, between where a cylinder tube 3 extends.
  • the cylinder tube 3 has a relatively simple structure with a smooth outer surface and cylindrical design. It is preferable a circular cylindrical cylinder tube 3.
  • the cylinder tube 3 has expediently all around the same wall thickness. It is about in the cylinder tube 3, in particular a metal tube.
  • the two cylinder covers 2a, 2b are substantially plate-like designed, however, have at the cylinder tube 3 facing inside via an axial projection 4, the radially oriented outer contour of the inner contour of the Cylinder tube 3 is adjusted, so that the latter frontally alssteckbar on the respective associated axial projection 4 is. In this way takes place between the cylinder covers 2a, 2b and the cylinder tube 3 in the assembled Condition a precise centering.
  • the interior 6 of the cylinder tube 3 contains a in the Drawing not shown in detail, the piston over a Sealing arrangement with the inner surface 7 of the cylinder tube 3 is in sealing contact.
  • the piston is relative to the cylinder tube 3 axially movable, wherein the movement on a force output member 8 is transferred, outside the cylinder tube 3 is accessible.
  • the first cylinder cover 2a slidable under seal interspersed and in the interior 6 with the not is piston coupled movement.
  • the outside the first cylinder cover 2a lying portion of the power output member 8 can with any object to be moved get connected.
  • the piston divides the interior 6 into two axially successive Workrooms with respect to which the feed and the removal of the actuating fluid used possible is.
  • the latter happens via a first (12a) and a second (12b) fluid channel, each at one end over a the cylinder cover 2a, 2b lead to the associated working space and the other ends each to a not shown Lead the connection opening, which is located at the cylinder tube 3 opposite outside of the second cylinder cover 2b are located.
  • Fluid lines for supplying and discharging the actuating fluid be connected to the connection openings.
  • each cylinder cover 2a, 2b In the area of the cylinder tube 3 protruding sections 17a, 17b is each cylinder cover 2a, 2b with several axial through holes 22 provided through which the Clamping screws 15 a are inserted through, where they are with their screw heads 23 on the associated cylinder cover 2a, 2b can support.
  • the threaded shanks 24 are in alignment Screwed fastening holes 25 of the associated tie rod 13, towards the respective end face 18a, 18b are open.
  • the threads in the mounting holes 25 become from the threaded shafts 24 when screwing expediently self-feared.
  • the length dimensions of the tie rods 13 are in the embodiment tuned to the length of the cylinder tube 3, that at fixed to the front side of the cylinder tube 3 Cylinder covers 2a, 2b a slight axial distance between the tie rods 13 and at least one of the cylinder covers 2a, 2b remains. In this way it is achieved that by the tensioning of the tie rods 13 and the Cylinder cover 2a, 2b, the latter firmly against the end faces the cylinder tube 3 are biased and thereby the Cylinder tube 3 firmly clamped between the cylinder covers 2a, 2b is.
  • tie rods 13 are each formed by a profile part 26, located in the circumferential direction 14 of the cylinder tube 3 a piece far extends along the outer circumference of this cylinder tube 3, whereby by the selected kind of profiling at the same time additional functional means intended to perform at least one additional function 27 are formed.
  • This integrated accessory feature 27 allow the tie rods 13 in addition to her Werankerfunktion also for more Use functions.
  • the execution as extruded parts is usually one in principle also possible execution as mold parts preferable, although there in a plastic version very weight-saving parts can be produced.
  • the two profile parts 26 of the embodiment at diametrically opposite one another Placed places of the cylinder tube 3, and it each is a circumferential extent in the circumferential direction 14, which has the consequence that the cylinder tube 3 respectively along part of its circumference from the relevant one Profile part 26 is encompassed.
  • the circumferential extension of the profile parts 26 lies in the embodiment in each case between 90 ° and 180 ° of the circumferential extent of the cylinder tube 3. It is advantageous if the circumferential extent a respective profile part 26 chosen at least as large is that it is at least 45 ° and preferably over at least 90 ° of the outer circumference of the cylinder tube. 3 extends.
  • Fig. 2 further shows that in the presence a plurality of profile parts 26 adjacent in the circumferential direction mutually arranged profile parts at a distance from each other can be arranged.
  • the covered by the profile parts 26 Surface portion of the outer surface 32 of the cylinder tube 3 may be limited to those areas in which an additional function should be provided.
  • the profile parts 26 have expediently overall over larger thickness dimensions as the wall thickness of the cylinder tube 3. This allows in especially the integration of additional functional agents 27 in the interior of a respective profile part 26th
  • additional function means 27 is provided, which has a circumferentially closed Channel 33 form, which one of the profile parts 26 in the Traverses longitudinally and to both end faces 18a, 18b opens.
  • This channel 33 is part of the first fluid channel 12a, through which the actuating fluid from rearwardly arranged second cylinder cover 2b to the front arranged first cylinder cover 2 a can be promoted.
  • a comparable channel 33 ' also has the other profile part 26, but not in the exemplary embodiment Fluid transfer is used.
  • the cavities 34 may also serve as channel-like additional functional agents be used and for example for Accommodating electrical cables and / or hoses serve, in the longitudinal direction of the cylinder tube 3 to embarrassed and, for example, related to sensory Measures are used.
  • the profile parts 26 of the Further on additional functional means 27, the fastening means 35 form.
  • These fastening means 35 can in particular be executed in the form of fastening grooves, the for attaching sensors and / or cylinder accessories and / or the working cylinder itself can be used.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Glass Compositions (AREA)
  • Harvester Elements (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

A drive cylinder comprising a cylinder barrel (3) extending between two cylinder heads (2a and 2b) and a plurality of ties (13) distributed about the outer periphery of the cylinder barrel (3) and bracing the cylinder heads (2a and 2b). Of these of ties at least one is constituted by a profile part (26) which extends in the peripheral direction (14) of the cylinder barrel (13) some distance along its outer periphery and whose profile provides means for the implementation of at least one additional function.

Description

Die Erfindung betrifft einen Arbeitszylinder, wie er insbesondere auf dem Gebiet der Pneumatik oder Hydraulik einsetzbar ist, mit einem sich zwischen zwei Zylinderdeckeln erstreckenden Zylinderrohr und mit mehreren entlang des Außenumfanges des zylinderrohres in dessen Umfangsrichtung verteilt angeordneten und mit den beiden Zylinderdeckeln verspannten Zugankern, von denen mindestens einer von einem Profilteil gebildet ist, das sich in der Umfangsrichtung des Zylinderrohres ein Stück weit entlang dessen Außenumfanges erstreckt und durch dessen Profilierung Zusatzfunktionsmittel zur Ausübung mindestens einer Zusatzfunktion vorgegeben sind.The invention relates to a working cylinder, as in particular can be used in the field of pneumatics or hydraulics is, with one extending between two cylinder covers Cylinder tube and with several along the outer circumference the cylinder tube arranged distributed in the circumferential direction and with the two Cylinder covers tensioned tie rods, of which at least one formed by a profile part, which is located in the Circumferential direction of the cylinder tube along a piece whose outer periphery extends and by its profiling Additional functional agent for performing at least one additional function set are.

Bekannte Arbeitszylinder verfügen über ein sich zwischen zwei Zylinderdeckeln erstreckendes Zylinderrohr, das als Profilrohr ausgebildet ist, welches auf Grund seiner Profilierung gewisse Zusatzfunktionen ermöglicht, beispielsweise die Befestigung von Sensoren in Befestigungsnuten oder die Durchführung von Betätigungsfluid durch integrierte Kanäle. Speziell bei einer Ausführung als Aluminium-Strangpressprofil ist eine sehr kostengünstige Integration zahlreicher Zusatzfunktionen möglich. Known working cylinders have one between two Cylinder covers extending cylinder tube, as a profile tube is formed, which due to its profiling certain additional functions allows, for example, the attachment from sensors in mounting grooves or the bushing of actuating fluid through integrated channels. specially in one embodiment as aluminum extruded profile is a very cost-effective integration of numerous additional functions possible.

Gegenwärtig besteht jedoch das Problem, dass sich als stranggepresste Profilteile ausgebildete Zylinderrohre nur bis Kolbengrößen von maximal etwa 125 mm Durchmesser ohne größere Probleme herstellen lassen. Bei größeren Durchmessern können die Maßhaltigkeit und die gewünschte geringe Rauhigkeit der vom Zylinderrohr definierten Kolbenlauffläche nicht mehr ohne Weiteres in dem gewünschten Maße gewährleistet werden. Man greift daher bei Arbeitszylindern mit größeren Kolbendurchmessern auf so genannte Zugstangen-Zylinder zurück, bei denen das Zylinderrohr glattflächig kreiszylindrisch ausgebildet ist und die Zylinderdeckel durch über den Außenumfang des Zylinderrohres verteilte stangenartige Zuganker mit dem Zylinderrohr verspannt werden. Ein solcher Arbeitszylinder der eingangs genannten Art wird in der US-A-4086456 beschrieben. Bei diesem ist eine Zugstange als Profilteil mit Mehrkantprofil ausgeführt, an das ein Reedschalter mittels einer Befestigungsplatte angeklemmt ist. Diese Bauweise ist allerdings mit höheren Herstellkosten verbunden und erfordert technisch aufwendigere Maßnahmen, um Zusatzfunktionen der erwähnten Art realisieren zu können.At present, however, there is the problem that as extruded Profile parts trained cylinder tubes only to piston sizes of a maximum of about 125 mm in diameter without larger Cause problems. For larger diameters can the dimensional accuracy and the desired low roughness of the from the cylinder tube defined piston tread no longer without Further be guaranteed to the desired extent. you engages therefore working cylinders with larger piston diameters on so-called pull-rod cylinders, in which the cylinder tube smooth surface circular cylindrical is and the cylinder cover through over the outer circumference of the cylinder tube distributed rod-like tie rods with the cylinder tube be tense. Such a cylinder of the The aforementioned type is described in US-A-4086456. In this is a pull rod as a profile part with polygonal profile executed, to which a reed switch by means of a mounting plate is clamped. This construction is however associated with higher manufacturing costs and requires technical more complex measures to additional functions of the type mentioned to be able to realize.

Es ist die Aufgabe der vorliegenden Erfindung, einen insbesondere als Pneumatikzylinder ausgebildeten Arbeitszylinder zu schaffen, der auch bei großen Durchmessern eine kostengünstige Integration von Zusatzfunktionen bei hoher Fertigungspräzision gestattet. It is the object of the present invention, in particular designed as a pneumatic cylinder working cylinder to create, even at large diameters, a cost-effective Integration of additional functions with high manufacturing precision allowed.

Gelöst wird diese Aufgabe durch einen die Merkmale des Oberbegriffs des Patentanspruches 1 aufweisenden Arbeitszylinder, bei dem mindestens ein Profilteil an der dem Zylinderrohr zugewandten Innenseite eine an die Wölbung der Außenkontur des Zylinderrohres angepasste Innenfläche besitzt.This task is solved by one of the features of the preamble of claim 1 having working cylinder, in which at least one profile part on the cylinder tube facing Inside one to the curvature of the outer contour of the Cylinder tube has adapted inner surface.

Der Arbeitszylinder vereinigt die präzisen Herstellungsmöglichkeiten konventioneller Zugstangen-Zylinder mit der kostengünstigen Integrationsmöglichkeit für Zusatzfunktionen der mit einem profilierten Zylinderrohr ausgestatteten Arbeitszylinder, so dass man von einem Hybridzylinder sprechen könnte. Das Zylinderrohr kann über eine sehr einfach herzustellende Geometrie verfügen, insbesondere über eine zylindrische und vorzugsweise kreiszylindrische Gestaltung, wobei jedoch mindestens ein Zuganker nicht in der bekannten Weise als Zugstange ausgebildet ist, sondern als sich ein Stück weit entlang des Außenumfanges des Zylinderrohres erstreckendes, speziell profiliertes Bauteil (Profilteil), das an seiner dem Zylinderrohr zugewandten Innenseite über eine an die Wölbung der Außenkontur des Zylinderrohres angepasste Innenfläche verfügt und das hinsichtlich seiner Profilierung so ausgebildet ist, dass Zusatzfunktionsmittel gebildet werden, die die Ausübung mindestens einer Zusatzfunktion gestatten. Eine solche Zusatzfunktion kann beispielsweise darin bestehen, die Befestigung von Sensoren, von Zylinderzubehör und/oder des Zylinders selbst zu gestatteten, oder in der Bereitstellung von Durchgangskanälen für die Durchführung von Kabeln und/oder Schläuchen und/oder eines für den Betrieb des Arbeitszylinders vorgesehenen Betätigungsfluides.The working cylinder combines the precise production possibilities conventional tie rod cylinder with the most cost-effective Integration option for additional functions of equipped with a profiled cylinder tube working cylinder, so that one could speak of a hybrid cylinder. The cylinder tube can be easily produced via a Geometry, in particular a cylindrical and preferably circular cylindrical design, but at least a tie rod not in the known manner as Pull rod is formed, but as a piece far extending along the outer circumference of the cylinder tube, specially profiled component (profile part), which at its the Cylinder tube facing inside over a to the curvature the outer contour of the cylinder tube adapted inner surface has and so formed in terms of its profiling is that additive agents are made that the Exercise at least one additional function. Such Additional function may be, for example, the Attachment of sensors, cylinder accessories and / or the Cylinders allowed themselves, or in the provision of passageways for the passage of cables and / or hoses and / or one for the operation of the working cylinder provided actuating fluid.

Vorteilhafte Weiterbildungen der Erfindung gehen aus den Unteransprüchen hervor.Advantageous developments of the invention will become apparent from the dependent claims out.

Je nach Bedarf besteht die Möglichkeit, nur einen, mehrere oder sämtliche der vorhandenen Zuganker als Profilteil der geschilderten Art auszuführen. Als besonders vorteilhaft hat sich eine Bauform erwiesen, bei der lediglich zwei Zuganker vorhanden sind, die beide von Profilteilen gebildet werden, welche eine sich bezüglich des Zylinderrohres diametral gegenüberliegende Position einnehmen.Depending on your needs, there is the possibility of only one, several or all of the existing tie rods as a profile part of to execute described kind. As a particularly advantageous proved a design in which only two tie rods are present, which are both formed by profile parts, which is a diametrically opposite with respect to the cylinder tube To take position.

Die Umfangserstreckung eines jeweiligen Profilteils ist zweckmäßigerweise so gewählt, dass es sich über mindestens 45° und vorzugsweise über mindestens 90° des Außenumfanges des Zylinderrohres erstreckt, wobei ein besonders zweckmäßiger Erstreckungsbereich zwischen 90° und 180° der Umfangserstreckung des Zylinderrohres liegt.The circumferential extent of a respective profile part is suitably chosen so that it is over at least 45 ° and preferably over at least 90 ° of the outer periphery the cylinder tube extends, with a particularly convenient Extension range between 90 ° and 180 ° of the circumferential extent of the cylinder tube is located.

Bei mindestens einem und vorzugsweise sämtlichen Profilteilen ist die Innenfläche insbesondere derart gewölbt, dass ihr Krümmungsradius gleich wie oder geringfügig größer ausfällt als der Krümmungsradius des Zylinderrohres im zugeordneten Bereich. In at least one and preferably all profile parts the inner surface is in particular so arched that you Radius of curvature equal or slightly larger fails as the radius of curvature of the cylinder tube in the assigned Area.

Um die optimale Relativlage zwischen den Profilteilen und dem Zylinderrohr bei der Montage und beim späteren Betrieb nicht zu beeinträchtigen, kann es vorteilhaft sein, wenn das betreffende Profilteil radial zumindest geringfügig beabstandet mit Bezug zur Außenfläche des Zylinderrohres angeordnet ist.To the optimum relative position between the profile parts and the Cylinder tube during assembly and during subsequent operation not it may be advantageous if the profile part concerned radially at least slightly spaced apart with respect to the outer surface of the cylinder tube is.

Über besonders kompakte Abmessungen verfügt der Arbeitszylinder, wenn mindestens ein und vorzugsweise jedes Profilteil im Querschnitt gesehen bogenartig gekrümmt ausgebildet ist, wobei der konkave Bereich dem Zylinderrohr zugewandt ist.The working cylinder has particularly compact dimensions, if at least one and preferably each profile part seen arcuately curved in cross-section is, with the concave portion facing the cylinder tube is.

Um ein optimales axiales Verspannen zwischen den Zylinderdeckeln und dem Zylinderrohr zu gewährleisten, sind die Längenabmessungen der Profilteile einerseits und des Zylinderrohres andererseits vorzugsweise so aufeinander abgestimmt, dass das Profilteil mit axialem Abstand zwischen den Zylinderdeckeln angeordnet ist. Das Verspannen zwischen den Zylinderdeckeln und dem Zylinderrohr wird somit durch die Profilteile nicht behindert.For optimum axial clamping between the cylinder covers and to ensure the cylinder tube are the length dimensions the profile parts on the one hand and the cylinder tube on the other hand preferably coordinated with each other, that the profile part with axial distance between the cylinder covers is arranged. The clamping between the cylinder covers and the cylinder tube is thus through the profile parts not disabled.

Besonders vorteilhaft ist eine Ausgestaltung mindestens eines und insbesondere sämtlicher Profilteile als Strangpressteile aus Aluminiummaterial. Denkbar wäre allerdings auch eine Ausbildung als Gießformteil, hierbei insbesondere bestehend aus Kunststoffmaterial.An embodiment of at least one is particularly advantageous and in particular all profile parts as extruded parts made of aluminum material. However, it would also be conceivable an education as a mold part, this particular consisting made of plastic material.

Nachfolgend wird die Erfindung anhand der beiliegenden Zeichnung näher erläutert. In dieser zeigen:

Fig. 1
eine erste Bauform des erfindungsgemäßen Arbeitszylinders in perspektivischer Explosionsdarstellung und
Fig. 2
einen Querschnitt durch den Arbeitszylinder aus Fig. 1 gemäß Schnittlinie II-II im Bereich des von Profilteilen flankierten Zylinderrohres.
The invention will be explained in more detail with reference to the accompanying drawings. In this show:
Fig. 1
a first design of the working cylinder according to the invention in a perspective exploded view and
Fig. 2
a cross section through the working cylinder of Fig. 1 along section line II-II in the area flanked by profile parts cylinder tube.

Der in seiner Gesamtheit mit Bezugsziffer 1 versehene Arbeitszylinder wird insbesondere mit Druckluft als Betätigungsfluid betrieben und findet seinen Einsatz vorwiegend als Pneumatikzylinder. Gleichwohl wäre auch ein Betrieb mit einem hydraulischen Betätigungsfluid möglich.The provided in its entirety by reference numeral 1 working cylinder in particular with compressed air as operating fluid operated and finds its use predominantly as a pneumatic cylinder. Nevertheless, a company would be also with a hydraulic actuating fluid possible.

Der in Fig. 1 mit verkürzten Längenabmessungen gezeigte Arbeitszylinder verfügt über zwei mit Abstand zueinander angeordnete, erste und zweite Zylinderdeckel 2a, 2b, zwischen denen sich ein Zylinderrohr 3 erstreckt. Das Zylinderrohr 3 hat einen relativ einfachen Aufbau mit glatter Außenfläche und zylindrischer Gestaltung. Bevorzugt handelt es sich um ein kreiszylindrisches Zylinderrohr 3.The working cylinder shown in Fig. 1 with shortened length dimensions has two spaced-apart, first and second cylinder cover 2a, 2b, between where a cylinder tube 3 extends. The cylinder tube 3 has a relatively simple structure with a smooth outer surface and cylindrical design. It is preferable a circular cylindrical cylinder tube 3.

Wie aus Fig. 2 hervorgeht, besitzt das Zylinderrohr 3 zweckmäßigerweise ringsum die gleiche Wandstärke. Es handelt sich bei dem Zylinderrohr 3 insbesondere um ein Metallrohr.As is apparent from Fig. 2, the cylinder tube 3 has expediently all around the same wall thickness. It is about in the cylinder tube 3, in particular a metal tube.

Die beiden Zylinderdeckel 2a, 2b sind im Wesentlichen plattenartig gestaltet, verfügen jedoch an der dem Zylinderrohr 3 zugewandten Innenseite über einen axialen vorsprung 4, dessen radial orientierte Außenkontur an die Innenkontur des Zylinderrohres 3 angepasst ist, so dass letzteres stirnseitig auf den jeweils zugeordneten axialen Vorsprung 4 aufsteckbar ist. Auf diese Weise erfolgt zwischen den Zylinderdeckeln 2a, 2b und dem Zylinderrohr 3 im zusammengebauten Zustand eine präzise Zentrierung.The two cylinder covers 2a, 2b are substantially plate-like designed, however, have at the cylinder tube 3 facing inside via an axial projection 4, the radially oriented outer contour of the inner contour of the Cylinder tube 3 is adjusted, so that the latter frontally aufsteckbar on the respective associated axial projection 4 is. In this way takes place between the cylinder covers 2a, 2b and the cylinder tube 3 in the assembled Condition a precise centering.

Beim Ausführungsbeispiel verfügt jeder axiale Vorsprung 4 an der radial orientierten Umfangsfläche über eine mit einem Dichtungsring 5 ausgestattete Umfangsnut - in Fig. 1 ist dies nur im Zusammenhang mit dem links abgebildeten ersten Zylinderdeckel 2a gezeigt -, wobei der Dichtungsring 5 den Übergangsbereich zwischen dem Zylinderrohr 3 und dem betreffenden Zylinderdeckel 2a, 2b fluiddicht abdichtet.In the embodiment, each axial projection 4 on the radially oriented peripheral surface via a with a Sealing ring 5 equipped circumferential groove - in Fig. 1 this only in connection with the first shown on the left Cylinder cover 2a shown -, wherein the sealing ring 5 the Transition region between the cylinder tube 3 and the relevant Cylinder cover 2a, 2b fluid-tight seals.

Der Innenraum 6 des Zylinderrohres 3 enthält einen in der Zeichnung nicht näher dargestellten Kolben, der über eine Dichtungsanordnung mit der Innenfläche 7 des Zylinderrohres 3 in Dichtkontakt steht. Der Kolben ist relativ zum Zylinderrohr 3 axial beweglich, wobei die Bewegung auf ein Kraftabgabeglied 8 übertragen wird, das außerhalb des Zylinderrohres 3 zugänglich ist. Beim Ausführungsbeispiel ist das Kraftabgabeglied 8 in Gestalt einer Kolbenstange ausgeführt, die den ersten Zylinderdeckel 2a unter Abdichtung gleitverschieblich durchsetzt und in dem Innenraum 6 mit dem nicht dargestellten Kolben bewegungsgekoppelt ist. Der außerhalb des ersten Zylinderdeckels 2a liegende Abschnitt des Kraftabgabegliedes 8 kann mit einem beliebigen zu bewegenden Gegenstand verbunden werden.The interior 6 of the cylinder tube 3 contains a in the Drawing not shown in detail, the piston over a Sealing arrangement with the inner surface 7 of the cylinder tube 3 is in sealing contact. The piston is relative to the cylinder tube 3 axially movable, wherein the movement on a force output member 8 is transferred, outside the cylinder tube 3 is accessible. In the embodiment that is Kraftabgabeglied 8 executed in the form of a piston rod, the first cylinder cover 2a slidable under seal interspersed and in the interior 6 with the not is piston coupled movement. The outside the first cylinder cover 2a lying portion of the power output member 8 can with any object to be moved get connected.

Der Kolben unterteilt den Innenraum 6 in zwei axial aufeinanderfolgende Arbeitsräume, bezüglich denen die Einspeisung und die Abfuhr des verwendeten Betätigungsfluides möglich ist. Letzteres geschieht über einen ersten (12a) und einen zweiten (12b) Fluidkanal, die jeweils einenends über einen der Zylinderdeckel 2a, 2b zum zugeordneten Arbeitsraum ausmünden und die andernends jeweils zu einer nicht näher dargestellten Anschlussöffnung führen, die sich an der dem Zylinderrohr 3 entgegengesetzten Außenseite des zweiten Zylinderdeckels 2b befinden. An die Anschlussöffnungen können Fluidleitungen zum Zuführen und Abführen des Betätigungsfluides angeschlossen werden.The piston divides the interior 6 into two axially successive Workrooms with respect to which the feed and the removal of the actuating fluid used possible is. The latter happens via a first (12a) and a second (12b) fluid channel, each at one end over a the cylinder cover 2a, 2b lead to the associated working space and the other ends each to a not shown Lead the connection opening, which is located at the cylinder tube 3 opposite outside of the second cylinder cover 2b are located. To the connection openings can Fluid lines for supplying and discharging the actuating fluid be connected.

Durch entsprechend gesteuerte Fluidbeaufschlagung kann der Kolben zu einer axialen Linearbewegung veranlasst werden, welche sich am Kraftabgabeglied 8 abgreifen lässt.By appropriately controlled fluid loading of the Pistons are caused to an axial linear motion, which can be tapped on the power output member 8.

Um den festen axialen Zusammenhalt der aus den beiden Zylinderdeckeln 2a, 2b und dem Zylinderrohr 3 bestehenden Baugruppe zu gewährleisten, ist der Arbeitszylinder 1 mit mehreren Zugankern 13 ausgestattet, die im Bereich des Außenumfanges des Zylinderrohres 3 angeordnet sind, wobei eine in der durch Doppelpfeil angedeuteten Umfangsrichtung 14 des Zylinderrohres 3 verteilte Anordnung der Zuganker 13 vorgesehen ist und sich die Zuganker 13 jeweils axial parallel zum Zylinderrohr 3 zwischen den beiden Zylinderdeckeln 2a, 2b erstrecken. Die Zuganker 13 sind jeweils mit beiden Zylinderdeckeln 2a, 2b axial verspannt, was mittels Spannelementen 15 geschieht, die beim Ausführungsbeispiel in Gestalt von Spannschrauben 15a ausgeführt sind.To the solid axial cohesion of the two cylinder covers 2a, 2b and the cylinder tube 3 existing assembly to ensure the working cylinder 1 with several Tie rods 13 equipped in the area of the outer circumference of the cylinder tube 3 are arranged, wherein an in the indicated by double arrow circumferential direction 14 of the Cylinder tube 3 distributed arrangement of the tie rods 13 is provided is and the tie rods 13 each axially parallel to the cylinder tube 3 between the two cylinder covers 2a, 2b extend. The tie rods 13 are each with two cylinder covers 2a, 2b axially braced, which by means of clamping elements 15 happens, in the embodiment in shape are performed by clamping screws 15a.

Die quer zur Längsachse 16 des Arbeitszylinders 1 gemessenen Abmessungen der Zylinderdeckel 2a, 2b sind zumindest partiell größer als der Außendurchmesser des Zylinderrohres 3, so dass das Zylinderrohr 3 von den Zylinderdeckeln 2a, 2b radial überragt wird, wobei die Zuganker 13 zwischen Abschnitten 17a, 417b der Zylinderdeckel 2a, 2b eingegliedert sind, die in der erwähnten Weise über das Zylinderrohr 3 hinausragen. Auf diese Weise ragen die Zylinderdeckel 2a, 2b mit den erwähnten Abschnitten 17a, 17b vor die axial orientierten Stirnflächen 18a, 18b eines jeweiligen Zugankers 13.The measured transversely to the longitudinal axis 16 of the working cylinder 1 Dimensions of the cylinder cover 2a, 2b are at least partially greater than the outer diameter of the cylinder tube 3, so that the cylinder tube 3 of the cylinder covers 2a, 2b is projected radially, wherein the tie rods 13 between sections 17a, 417b of the cylinder cover 2a, 2b incorporated are in the mentioned manner on the cylinder tube. 3 protrude. In this way, the cylinder cover 2a, 2b protrude with the mentioned sections 17a, 17b in front of the axially oriented End faces 18a, 18b of a respective tie rod 13.

Im Bereich der über das Zylinderrohr 3 hinausragenden Abschnitte 17a, 17b ist jeder Zylinderdeckel 2a, 2b mit mehreren axialen Durchgangslöchern 22 versehen, durch die die Spannschrauben 15a hindurchgesteckt sind, wobei sie sich mit ihren Schraubenköpfen 23 am zugehörigen Zylinderdeckel 2a, 2b abstützen können. Die Gewindeschäfte 24 sind in fluchtende Befestigungslöcher 25 des zugeordneten Zugankers 13 eingeschraubt, die zur betreffenden Stirnfläche 18a, 18b hin offen sind. Die Gewinde in den Befestigungslöchern 25 werden von den Gewindeschäften 24 beim Einschrauben zweckmäßigerweise selbst eingefurcht. In the area of the cylinder tube 3 protruding sections 17a, 17b is each cylinder cover 2a, 2b with several axial through holes 22 provided through which the Clamping screws 15 a are inserted through, where they are with their screw heads 23 on the associated cylinder cover 2a, 2b can support. The threaded shanks 24 are in alignment Screwed fastening holes 25 of the associated tie rod 13, towards the respective end face 18a, 18b are open. The threads in the mounting holes 25 become from the threaded shafts 24 when screwing expediently self-feared.

Die Längenabmessungen der Zuganker 13 sind beim Ausführungsbeispiel so auf die Länge des Zylinderrohres 3 abgestimmt, dass bei fest an der Stirnseite des Zylinderrohres 3 anliegenden Zylinderdeckeln 2a, 2b ein geringfügiger axialer Abstand zwischen den Zugankern 13 und wenigstens einem der Zylinderdeckel 2a, 2b verbleibt. Auf diese Weise wird erreicht, dass durch das Verspannen der Zuganker 13 und der Zylinderdeckel 2a, 2b die letzteren fest gegen die Stirnflächen des Zylinderrohres 3 vorgespannt werden und dadurch das Zylinderrohr 3 fest zwischen den Zylinderdeckeln 2a, 2b eingespannt ist.The length dimensions of the tie rods 13 are in the embodiment tuned to the length of the cylinder tube 3, that at fixed to the front side of the cylinder tube 3 Cylinder covers 2a, 2b a slight axial distance between the tie rods 13 and at least one of the cylinder covers 2a, 2b remains. In this way it is achieved that by the tensioning of the tie rods 13 and the Cylinder cover 2a, 2b, the latter firmly against the end faces the cylinder tube 3 are biased and thereby the Cylinder tube 3 firmly clamped between the cylinder covers 2a, 2b is.

Da das Zylinderrohr 3 auf den zentrierend wirkenden axialen Vorsprüngen 4 sitzt, könnte alternativ auch eine Bauform gewählt werden, bei der im festgespannten Zustand die Zuganker 13 mit ihren Stirnflächen 18a, 18b fest gegen die Zylinderdeckel 2a, 2b vorgespannt sind und das Zylinderrohr 3 mit geringfügigem axialen Spiel zwischen den Zylinderdeckeln 2a, 2b gehalten ist.Since the cylinder tube 3 on the centering axial Projections 4 sits, could alternatively chose a design when, in the tightened state, the tie rods 13 with their end faces 18a, 18b firmly against the cylinder cover 2a, 2b are biased and the cylinder tube 3 with slight axial play between the cylinder covers 2a, 2b is held.

Eine Besonderheit der Zuganker 13 besteht darin, dass sie jeweils von einem Profilteil 26 gebildet sind, das sich in der Umfangsrichtung 14 des Zylinderrohres 3 ein Stück weit entlang des Außenumfanges dieses Zylinderrohres 3 erstreckt, wobei durch die gewählte Art der Profilierung gleichzeitig zur Ausübung mindestens einer Zusatzfunktion vorgesehene Zusatzfunktionsmittel 27 gebildet sind. Diese integrierten Zusatzfunktionsmittel 27 ermöglichen es, die Zuganker 13 zusätzlich zu ihrer Zugankerfunktion auch noch für weitere Funktionen einzusetzen.A special feature of the tie rods 13 is that they are each formed by a profile part 26, located in the circumferential direction 14 of the cylinder tube 3 a piece far extends along the outer circumference of this cylinder tube 3, whereby by the selected kind of profiling at the same time additional functional means intended to perform at least one additional function 27 are formed. This integrated accessory feature 27 allow the tie rods 13 in addition to her Zugankerfunktion also for more Use functions.

Die Ausführung der Zuganker 13 in Gestalt von Profilteilen 26 eröffnet in diesem Zusammenhang den Vorteil einer hohen Gestaltungsfreiheit bei der konstruktiven Realisierung der Zusatzfunktionsmittel. Dies insbesondere dann, wenn die Profilteile 26 wie beim Ausführungsbeispiel als insbesondere aus Aluminiummaterial bestehende Strangpressteile ausgebildet sind. Durch entsprechende Realisierung des Extrusionswerkzeuges können sehr flexibel an den jeweiligen Einsatzfall angepasste Profilierungen.realisiert werden.The execution of the tie rods 13 in the form of profile parts 26 opens the advantage of a high in this context Design freedom in the constructive realization of Additional function means. This especially if the profile parts 26 as in the embodiment as particular made of aluminum existing extrusions are. By appropriate realization of the extrusion tool can be very flexible to the particular application customized profilings.realized.

Die Ausführung als Strangpressteile ist in der Regel einer prinzipiell ebenfalls möglichen Ausführung als Gießformteile vorzuziehen, wenngleich dort bei einer Kunststoffausführung sehr gewichtssparende Teile hergestellt werden können.The execution as extruded parts is usually one in principle also possible execution as mold parts preferable, although there in a plastic version very weight-saving parts can be produced.

Die Anzahl der vorhandenen, Zugankerfunktion übernehmenden Profilteile 26 ist prinzipiell beliebig, wobei jedoch zweckmäßigerweise mindestens zwei derartige Profilteile 26 vorhanden sind, wie dies beim Ausführungsbeispiel der Fall ist. Eine alternative Bauform, bei der die Zuganker 13 nur teilweise als Profilteile ausgebildet und teilweise in konventioneller Form in Gestalt stabartiger Zuganker ausgeführt sind, ist in der Zeichnung nicht näher dargestellt. The number of existing, tie rod function taking over Profile parts 26 is in principle arbitrary, but expediently at least two such profile parts 26 available are, as is the case in the embodiment. An alternative design, in which the tie rods 13 only partially designed as profile parts and partly in conventional Form designed in the form of rod-like tie rods are not shown in detail in the drawing.

Insbesondere aus Symmetriegründen sind die beiden Profilteile 26 des Ausführungsbeispiels an einander diametral gegenüberliegenden Stellen des Zylinderrohres 3 platziert, und es ist jeweils eine Umfangserstreckung in der Umfangsrichtung 14 gewählt, die zur Folge hat, dass das Zylinderrohr 3 jeweils entlang eines Teils seines Umfanges vom betreffenden Profilteil 26 umgriffen ist. Die Umfangserstreckung der Profilteile 26 liegt beim Ausführungsbeispiel jeweils im Bereich zwischen 90° und 180° der Umfangserstreckung des Zylinderrohres 3. Von Vorteil ist es, wenn die Umfangserstreckung eines jeweiligen Profilteils 26 zumindest so groß gewählt ist, dass es sich über mindestens 45° und vorzugsweise über mindestens 90° des Außenumfanges des Zylinderrohres 3 erstreckt. Sehr kompakte Abmessungen des Arbeitszylinders 1 können realisiert werden, wenn die Profilteile 13 im Querschnitt gesehen bogenartig gekrümmt ausgebildet sind, wobei der konkave Bereich dem Zylinderrohr 3 zugewandt ist. Es ist dadurch eine Gestaltung des Profilteils 26 möglich, bei der dieses dem Umfangsverlauf des Zylinderrohres 3 unmittelbar folgt.In particular, for reasons of symmetry, the two profile parts 26 of the embodiment at diametrically opposite one another Placed places of the cylinder tube 3, and it each is a circumferential extent in the circumferential direction 14, which has the consequence that the cylinder tube 3 respectively along part of its circumference from the relevant one Profile part 26 is encompassed. The circumferential extension of the profile parts 26 lies in the embodiment in each case between 90 ° and 180 ° of the circumferential extent of the cylinder tube 3. It is advantageous if the circumferential extent a respective profile part 26 chosen at least as large is that it is at least 45 ° and preferably over at least 90 ° of the outer circumference of the cylinder tube. 3 extends. Very compact dimensions of the working cylinder 1 can be realized when the profile parts 13 in cross section arcuately formed are curved, wherein the concave portion facing the cylinder tube 3. It is thereby a design of the profile part 26 possible, in the this the circumferential course of the cylinder tube 3 directly follows.

Begünstigt wird dies beim Ausführungsbeispiel noch dadurch, dass die Profilteile 26 an der dem Zylinderrohr zugewandten konkaven Innenseite eine an die Wölbung der Außenkontur des Zylinderrohres 3 angepasste Innenfläche 28 besitzen. Der Krümmungsradius dieser Innenflächen entspricht beim Ausführungsbeispiel demjenigen der zugewandten Außenfläche 32 des Zylinderrohres 3, kann aber auch geringfügig größer sein, und zwar insbesondere dann, wenn das betreffende Profilteil 26 radial zumindest geringfügig beabstandet zu der Außenfläche 32 des Zylinderrohres 3 angeordnet ist.This is favored in the embodiment still by that the profile parts 26 facing on the cylinder tube concave inside a to the curvature of the outer contour of the Cylinder tube 3 adapted inner surface 28 have. Of the Radius of curvature of these inner surfaces corresponds in the embodiment that of the facing outer surface 32 of the Cylinder tube 3, but may also be slightly larger and in particular if the profile part in question 26 radially at least slightly spaced from the outer surface 32 of the cylinder tube 3 is arranged.

Aus Fig. 2 geht des Weiteren hervor, dass bei Vorhandensein mehrerer Profilteile 26 die in Umfangsrichtung benachbart zueinander angeordneten Profilteile mit Abstand zueinander angeordnet sein können. Der von den Profilteilen 26 überdeckte Flächenabschnitt der Außenfläche 32 des Zylinderrohres 3 kann sich auf diejenigen Bereiche beschränken, in denen eine Zusatzfunktion zur Verfügung gestellt werden soll.From Fig. 2 further shows that in the presence a plurality of profile parts 26 adjacent in the circumferential direction mutually arranged profile parts at a distance from each other can be arranged. The covered by the profile parts 26 Surface portion of the outer surface 32 of the cylinder tube 3 may be limited to those areas in which an additional function should be provided.

Wie aus Fig. 2 hervorgeht, verfügen die Profilteile 26 zweckmäßigerweise insgesamt über größere Dickenabmessungen als die Wandstärke des Zylinderrohres 3. Dies gestattet in besonderem Maße die Integration von Zusatzfunktionsmitteln 27 im Innern eines jeweiligen Profilteils 26.As is apparent from Fig. 2, the profile parts 26 have expediently overall over larger thickness dimensions as the wall thickness of the cylinder tube 3. This allows in especially the integration of additional functional agents 27 in the interior of a respective profile part 26th

Beim Ausführungsbeispiel sind dementsprechend Zusatzfunktionsmittel 27 vorgesehen, die einen umfangsseitig geschlossenen Kanal 33 bilden, welcher eines der Profilteile 26 in der Längsrichtung durchzieht und zu beiden Stirnflächen 18a, 18b ausmündet. Dieser Kanal 33 ist Bestandteil des ersten Fluidkanals 12a, durch den hindurch das Betätigungsfluid vom rückwärtig angeordneten zweiten Zylinderdeckel 2b zum vorne angeordneten ersten Zylinderdeckel 2a gefördert werden kann. Accordingly, in the embodiment, additional function means 27 is provided, which has a circumferentially closed Channel 33 form, which one of the profile parts 26 in the Traverses longitudinally and to both end faces 18a, 18b opens. This channel 33 is part of the first fluid channel 12a, through which the actuating fluid from rearwardly arranged second cylinder cover 2b to the front arranged first cylinder cover 2 a can be promoted.

Einen vergleichbaren Kanal 33' besitzt auch das andere Profilteil 26, der jedoch beim Ausführungsbeispiel nicht zur Fluidübertragung verwendet wird.A comparable channel 33 'also has the other profile part 26, but not in the exemplary embodiment Fluid transfer is used.

Wie aus Fig. 2 ferner hervorgeht, können solche Materialbereiche der Profilteile 26, die nicht für Zusatzfunktionen benötigt werden, über einen oder mehrere in Längsrichtung durchgehende Hohlräume 34 verfügen, die beispielsweise eine Materialeinsparung bewirken.As is further apparent from Fig. 2, such material areas the profile parts 26, not for additional functions be needed over one or more longitudinal have continuous cavities 34, for example, a Effect material savings.

Ansonsten können die Hohlräume 34 auch als kanalartige Zusatzfunktionsmittel eingesetzt werden und beispielsweise zur Aufnahme von elektrischen Kabeln und/oder von Schläuchen dienen, die in der Längsrichtung des Zylinderrohres 3 zu verlegen sind und beispielsweise im Zusammenhang mit sensorischen Maßnahmen eingesetzt werden.Otherwise, the cavities 34 may also serve as channel-like additional functional agents be used and for example for Accommodating electrical cables and / or hoses serve, in the longitudinal direction of the cylinder tube 3 to embarrassed and, for example, related to sensory Measures are used.

Beim Ausführungsbeispiel verfügen die Profilteile 26 des Weiteren über Zusatzfunktionsmittel 27, die Befestigungsmittel 35 bilden. Diese Befestigungsmittel 35 können insbesondere in Gestalt von Befestigungsnuten ausgeführt sein, die für die Befestigung von Sensoren und/oder von Zylinderzubehör und/oder des Arbeitszylinders selbst einsetzbar sind.In the embodiment, the profile parts 26 of the Further on additional functional means 27, the fastening means 35 form. These fastening means 35 can in particular be executed in the form of fastening grooves, the for attaching sensors and / or cylinder accessories and / or the working cylinder itself can be used.

Auf Grund der einfachen Herstellung der Profilteile 26 lassen sich die gewünschten Befestigungsmittel 35 nach Bedarf vorgehen, wobei ohne Weiteres verschiedene Arten von Befestigungsmitteln 35 gleichzeitig realisiert werden können, die später nach Bedarf verwendbar sind.Due to the simple production of the profile parts 26 leave the desired fasteners 35 as needed proceeding with readily various types of fasteners 35 can be realized simultaneously, the can be used later as needed.

Claims (18)

  1. Operating cylinder, with a cylinder tube (3) extending between two cylinder covers (2a, 2b), and with several tie rods (13) distributed along the outer periphery of the cylinder tube (3) in its peripheral direction and clamped to the two cylinder covers (2a, 2b), with at least one of the tie rods formed by a profile section (26) which extends in the peripheral direction (14) of the cylinder tube (3) a short distance along its outer periphery and provides through its profiling additional function means for exercising one or more additional functions, characterised in that at least one profile section (26) has on the inner side facing the cylinder tube (3) an inner surface (28) matching the curvature of the external contour of the cylinder tube (3).
  2. Operating cylinder according to claim 1, characterised in that each tie rod (13) is formed by a profile section (26).
  3. Operating cylinder according to claim 1 or 2, characterised by two profile sections (26) arranged diametrically opposite one another.
  4. Operating cylinder according to any of claims 1 to 3, characterised by several profile sections (26), wherein adjacent profile sections (26) are spaced apart at intervals in the peripheral direction of the cylinder tube (3).
  5. Operating cylinder according to any of claims 1 to 4, characterised in that the radius of curvature of the inner surface of the profile section (26) is equal to or slightly greater than the radius of curvature of the cylinder tube (3) in the area of the profile section (26).
  6. Operating cylinder according to any of claims 1 to 5, characterised in that at least one profile section (26) is arranged radially at least a short distance from the outer surface (32) of the cylinder tube (3).
  7. Operating cylinder according to any of claims 1 to 6, characterised in that at least one profile section (26) is curved like an arch, viewed in cross-section, with the concave area facing the cylinder tube (3).
  8. Operating cylinder according to any of claims 1 to 7, characterised in that the length measurements of the profile section or sections (26) on the one hand and of the cylinder tube (3) on the other hand are so matched to one another that there is an axial clearance between the profile section (26) and at least one cylinder cover (2a, 2b).
  9. Operating cylinder according to any of claims 1 to 8, characterised in that at least one profile section (26) is in the form of an extruded part.
  10. Operating cylinder according to any of claims 1 to 9, characterised in that at least one profile section (26) is in the form of a moulded part.
  11. Operating cylinder according to any of claims 1 to 10, characterised in that at least one profile section (26) is made of aluminium material or of plastic material.
  12. Operating cylinder according to any of claims 1 to 11, characterised in that at least one profile section (26) has a peripheral extent such that it extends over at least 45°C and preferably over at least 90°C of the outer periphery of the cylinder tube (3).
  13. Operating cylinder according to claim 12, characterised in that the peripheral extent of the profile section (26) is in the range between 90°C and 180°C of the peripheral extent of the cylinder tube (3).
  14. Operating cylinder according to any of claims 1 to 13, characterised in that at least one profile section (26) has one or more hollow spaces (34), continuous in the longitudinal direction.
  15. Operating cylinder according to any of claims 1 to 14, characterised in that the additional function means (27) form mounting means (35), made for example in the form of one or more mounting slots and provided in particular for the mounting of sensors and/or cylinder accessories and/or the operating cylinder (1) itself.
  16. Operating cylinder according to any of claims 1 to 15, characterised in that the additional function means (27) form passages (33, 33'; 34), closed on the peripheral side, through which fluid and/or cables and/or hoses may be fed.
  17. Operating cylinder according to any of claims 1 to 16, characterised in that the cylinder tube (3) is cylindrical and preferably circular-cylindrical in shape.
  18. Operating cylinder according to any of claims 1 to 17, characterised by mounting holes (25) open towards the end faces (18a, 18b) of the profile section or sections (26) and into which locking screws (15a) acting on the assigned cylinder cover (2a, 2b) are screwed.
EP02754684A 2001-07-03 2002-06-15 Working cylinder Expired - Lifetime EP1402188B1 (en)

Applications Claiming Priority (3)

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DE20110965U 2001-07-03
DE20110965U DE20110965U1 (en) 2001-07-03 2001-07-03 Working cylinder
PCT/EP2002/006622 WO2003004881A1 (en) 2001-07-03 2002-06-15 Working cylinder

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EP1402188A1 EP1402188A1 (en) 2004-03-31
EP1402188B1 true EP1402188B1 (en) 2005-11-30

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US (1) US6840154B2 (en)
EP (1) EP1402188B1 (en)
CN (1) CN1297754C (en)
AT (1) ATE311540T1 (en)
CA (1) CA2418926A1 (en)
DE (2) DE20110965U1 (en)
WO (1) WO2003004881A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010108589A1 (en) 2009-03-25 2010-09-30 Festo Ag & Co. Kg Housing tube and linear drive provided therewith

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7363851B2 (en) * 2006-01-20 2008-04-29 Fisher Controls International, Llc Spacers for use with actuator casings
DE102014016948A1 (en) * 2014-11-18 2016-05-19 PREMETEC Automation GmbH Recording device of a position detecting device for detecting the position of a piston of a working cylinder and position detecting device
DE102016015542A1 (en) 2016-12-27 2018-06-28 Festo Ag & Co. Kg BEARING COVER WITH SCREW FIXING

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4086456A (en) * 1976-10-04 1978-04-25 Cincinnati Milacron Inc. Mounting for magnetic switch
FR2425567A1 (en) 1978-05-12 1979-12-07 Outillage Air Comprime CYLINDER
GB2230385B (en) * 1989-04-08 1993-10-13 Festo Kg A control device
US5167182A (en) 1991-10-04 1992-12-01 Sims James O Modular fluid actuator
DE9207582U1 (en) * 1992-06-04 1992-08-20 Festo KG, 7300 Esslingen Housing for a working cylinder
DE29605723U1 (en) * 1996-03-28 1996-05-30 Festo Kg, 73734 Esslingen Fluid operated rotary actuator
JP3295619B2 (en) 1997-07-16 2002-06-24 エスエムシー株式会社 Sensor mounting for hydraulic cylinders
DE19925600A1 (en) * 1999-06-04 2000-12-14 Sbs Sondermaschinen Gmbh Light construction hydraulic cylinder has tie rod mounted in outer cylinder tube that bears peripheral forces of hydraulic internal pressure, either outside or inside working chamber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010108589A1 (en) 2009-03-25 2010-09-30 Festo Ag & Co. Kg Housing tube and linear drive provided therewith
DE102009014815A1 (en) 2009-03-25 2010-09-30 Festo Ag & Co. Kg Housing tube and thus equipped linear drive

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US6840154B2 (en) 2005-01-11
CN1522344A (en) 2004-08-18
WO2003004881A1 (en) 2003-01-16
CA2418926A1 (en) 2003-02-07
DE50205126D1 (en) 2006-01-05
US20030172806A1 (en) 2003-09-18
ATE311540T1 (en) 2005-12-15
EP1402188A1 (en) 2004-03-31
DE20110965U1 (en) 2001-09-06
CN1297754C (en) 2007-01-31

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