EP0774586B1 - Actionneur rotatif actionné par fluide - Google Patents

Actionneur rotatif actionné par fluide Download PDF

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Publication number
EP0774586B1
EP0774586B1 EP96116969A EP96116969A EP0774586B1 EP 0774586 B1 EP0774586 B1 EP 0774586B1 EP 96116969 A EP96116969 A EP 96116969A EP 96116969 A EP96116969 A EP 96116969A EP 0774586 B1 EP0774586 B1 EP 0774586B1
Authority
EP
European Patent Office
Prior art keywords
coupling
rotary drive
coupling section
output shaft
drive 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
Application number
EP96116969A
Other languages
German (de)
English (en)
Other versions
EP0774586A2 (fr
EP0774586A3 (fr
Inventor
Kurt Dr. Stoll
Michael Streck
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 EP0774586A2 publication Critical patent/EP0774586A2/fr
Publication of EP0774586A3 publication Critical patent/EP0774586A3/fr
Application granted granted Critical
Publication of EP0774586B1 publication Critical patent/EP0774586B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B15/12—Characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type
    • 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
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • F15B15/2853—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using potentiometers

Definitions

  • the invention relates to a fluid-operated rotary drive, with a drive housing, one of which rotates drivable, arranged in the drive housing Drive means cooperating output shaft rotatably on which one protrudes from the drive housing co-rotating control section is provided with Positioning means that interacts with positioning enable the output shaft in certain rotational angle positions.
  • a fluid-operated rotary drive of this type goes from DE 39 41 255 C2. It has a drive housing, included in the drive means containing a swivel wing are with a protruding from the housing Output shaft are connected. On the output shaft can one back and forth in particular outgoing, that is drivable oscillating rotary movement Define component.
  • One of a wave section the control section formed on the output shaft acts with positioning means together, which comprise a stop device, with which the angle of rotation of the output shaft can be variably specified.
  • variable Positioning within the maximum rotation angle range are not, however, at least not with accuracy, executable.
  • the positioning means comprise a position detection device, the one firmly connected to the drive housing Base body and a rotatably mounted on the base body
  • first detection means to be connected to an evaluation device and on the rotating body during its rotational movement
  • second detection means moving along the first detection means are arranged that on the rotating body non-circular profiled first coupling section and the control section is coaxial with the first coupling section, non-circular profiled second coupling section is provided and that a coupling part is present, that about complementary coupling parts to the coupling parts has it at the same time with the two coupling parts in positive engagement stands, and that to compensate for misalignments at least between the longitudinal axes of the coupling parts is partially designed as an elastic body.
  • the rotary drive with a position detection device equipped which enables Intermediate values between the maximum possible rotation angle positions to detect the output shaft.
  • This allows the Output shaft precisely positioned even in intermediate positions be, and / or depending on certain Intermediate positions of the output shaft determined Initiate operations.
  • the Position detection device as a potentiometer device trained in which the second detection means are formed by at least one sliding contact, the one belonging to the first means of registration circular arc-shaped resistance strips, so that the connected evaluation device due to resistance values that can be determined in each case to the current Angle position of the driven part can close.
  • the Connection between the position detection device and the control section of the output shaft is via a coupling part manufactured, which is preferably releasable insertion with profiled coupling sections of the control section and that in the case of the potentiometer device standing contact bearing rotating body.
  • a coupling part interposed, at least in part as more compliant Is formed elastic body, the occurring Alignment errors compensate without the exact turning entrainment to interfere.
  • the coupling part expediently consists completely made of material with rubber-elastic properties, it being can be designed as a rubber part or elastomer part.
  • first coupling section on Rotating body as an inner profile and the second coupling section run on the control section as an outer profile, the Mating coupling parts via complementary profiles feature.
  • the two counter coupling parts on the coupling part are preferred so arranged that they are at least partially and preferably enclose concentrically over its entire length.
  • the coupling part is advantageously as Ring part executed.
  • the positioning means are expediently under one in particular, hood-like cover part protected, the cover part detachably on the drive housing is fixed and the basic body of the position detection device in turn attached to the cover is.
  • the position detection device is expedient realized in combination with an anchor device, which latter can be used to oscillate Operation the maximum possible angle of rotation Output shaft, in particular variably adjustable to specify.
  • the rotary actuator according to the example has a drive housing 1 designated housing in multi-part Construction that has a work space 2 inside.
  • the Drive housing 1 including the work area 2 is penetrated by an output shaft 3, which via suitable Bearing devices 4 on the drive housing 1 rotatable is stored.
  • Drive means 5 are arranged in the work space 2 in the exemplary embodiment comprise a swivel wing 6, the one in non-rotatable connection with the output shaft 3 stands. It is on the output shaft 3 with respect to their Longitudinal axis 7 pivotally mounted, being within the Swiveling movement with the interposition of a seal 8 slides along the inner circumference of the work space 2.
  • On additional room divider 9 inserted in the work area 2 ensures that the workroom 2 in two is not closer pressurization spaces shown is subdivided, which via connection openings 12 optionally with an actuating fluid can be pressurized or vented.
  • Actuating fluid is particularly suitable for compressed air.
  • the Swivel wing 6 By appropriately controlling the fluid supply, the Swivel wing 6 to an oscillating swivel movement the longitudinal axis 7 are driven. Because of the non-rotating Connection with the output shaft 3 leads this thus a rotary movement, with its longitudinal axis 7 the Axis of rotation forms.
  • the rotary movement can be done on one the drive housing 1 outstanding tapping section 13 of the Tap the output shaft 3 to any component rotate or swivel.
  • the tapping section 13 is located on the front of the Drive housing 1. On the opposite rear of the housing the output shaft 3 also projects over the Drive housing 1 addition, with a control section 14. This works together with positioning means that are generally designated by reference number 15.
  • a stop device is located under the positioning means 15 16, which is rotatably attached to the control section 14 fixed, projecting radially from this wing-like Has pivot stop 17.
  • this pivot stop 17 are one or more on Drive housing 1 anchored counter stops 18 arranged, 3 of which is shown in FIG.
  • the counterstops 18 give the output shaft 3 the maximum possible Swivel angle before, so practically the end positions of the Rotational movement by reaching the pivot stop 17 the relevant end position on one of the counter stops 18 accumulates.
  • the positioning means 15 enable a positioning of the output shaft 3 in certain Angle of rotation positions also within the through the anchor device 16 predetermined end positions.
  • the positioning means 15 of the further a position detection device 23, the together with the stop device 16 under a pot or hood-like cover part 24 that sits with the open Side ahead on the rear of the drive housing 1 is releasably set.
  • a locking connection device can be used for fixing used in the embodiment over several over the edge 25 of the opening of the cover 24 distributed locking projections 26th has in a groove-like recess 27 on the drive housing 1 can snap into place.
  • the position detection device has a fixed with the drive housing 1 connected base body 32 firm connection is, for example, via the cover part 24 achieved.
  • the base body 32 is on the inside Bottom 33 of the cover part 24 attached, which according to the example by means of screws 34.
  • the position detection device 23 also has via a rotating body 35 which is rotatable on the base body 32 is stored.
  • An intermediate storage facility can be seen at 36.
  • the base body 32 and the rotating body 35 form in the embodiment an annular housing that is protective receives first and second detection means 36, 37.
  • the first detection means 36 are fixed on the base body 32, while the second detection means 37 on the Rotating body 35 are attached.
  • the assignment is made that the second detection means 37 when twisted of the rotating body 35 relative to the base body 32 run along the first detection means 36.
  • Based on current relative position between the first and second Detection means 36, 37 can be based on the current angle of rotation position of the rotating body 35 with respect to the base body 35 can be closed.
  • a position detection device 23 a very precise and proportionate simply constructed potentiometer device 38 for use.
  • Your first detection means 36 have, for example via a resistance strip 43 with a circular arc Longitudinal course and a concentric to this arranged neutral conductor 44 with the lowest possible resistance.
  • These first detection means 36 are, as well 4, with a connector 45 in electrical connection, via the one not shown electronic evaluation device connected can be.
  • the first detection means are expedient 36 arranged on a circuit board 46 which in Inside the housing of the potentiometer device 38 on the Base body 32 is fixed.
  • the second detection means 37 is in the potentiometer device 38 a sliding contact 47 is provided, which on Rotary body 35 is attached and at the same time with the Resistance strip 43 and the neutral conductor 44 in electrical Touch contact is.
  • a suitable sealing device 48 turned on the example consists of several sealing rings.
  • a coupling part 51 is provided for the rotationally fixed connection between the rotating body 35 and the output shaft 3. It stands both with the rotating body 35 and with the Control section 14 of the output shaft 3 in a positive axial engagement.
  • a non-circular shape is formed on the rotating body 35 contoured first coupling section 52 provided with a complementary first counter coupling part 54 of the Coupling part 51 is in engagement.
  • the control section 14 also has a non-circular shape contoured second coupling section 53 with a complementarily contoured second counter coupling section 55 of the coupling part 51 is also in mating engagement.
  • the clutch and counter clutch parts 52, 53, 54, 55 are of the type of Multi-spline profiles, as used for spline shafts Application.
  • the first coupling section 52 is preferably an inner profile designed and in the annular recess 59 of the annular Rotating body 35 arranged. Is accordingly the first counter coupling part 54 has an outer profile.
  • the second clutch section provided on the control section 14 53 is formed by an outer profile, so that the assigned second counter-coupling part 55 of the coupling part 51 is an inner profile.
  • the pitch circle diameter in the area of the first coupling section 52 and the first counter-coupling section 54 larger than that in the area of the second coupling section 53 and the second counter-coupling section 55. Due to the Difference in diameter, it is possible to the two counter coupling parts 54, 55 to be provided on the coupling part 51 in such a way that they overlap at least partially axially and enclose concentrically. This results in one small axial length and a power transmission in about in the same radial plane.
  • the coupling part 51 is expediently around a ring part.
  • the first counter-coupling section 54 extends over the outer circumference, the second counter coupling section 55 over the inner circumference of this ring part.
  • Both counter coupling parts 54, 55 can by radial stop collars 56 projecting outwards or inwards be limited to the fitting or insertion dimension for the first and limit the second coupling section 52, 53 and the plug-in assembly facilitate.
  • the coupling part 51 In addition to the torque transmission from the output shaft 3 to the rotating body 35, the coupling part 51 still has the another essential task, due to production and assembly misalignment occurring between the longitudinal axes 57, 58 of the two coupling parts 52, 53 to compensate. In other words, misalignment compensation takes place between the longitudinal axes of the rotating body 35 and the tax section 14.
  • Tensions of this type can be in the inventive Rotary drive does not occur because the coupling part 51st is at least partially designed as an elastic body compensates for the misalignment mentioned.
  • the existing one Rubber elasticity allows deformations in particular Radial direction, so that an existing transverse offset or in Operation flexibly recorded tumbling movements without affecting the rotary driving connection.
  • a rubber or elastomer material is expedient chosen that is sufficiently stiff to the required Ensure turning driving, nonetheless however the required limited compensatory movements to allow. Since the rotating body 35 is relatively light running on the base body 32 is the torque load that occurs very low, so that the described Working conditions easily with a not too harsh and not let too soft rubber material be realized.
  • the coupling part is advantageously of one piece Elastic body made of material with rubber-elastic properties. He can therefore be very easy to manufacture.
  • the coupling part 51 is by means of the stop collars 56 safely between the rotating body 35 and the Tax section 14 held, the latter not otherwise necessarily an integral part of the output shaft 3 must be.
  • the output shaft 3 With the help of the position detection device 23, a easy positioning of the output shaft 3 within the maximum possible angle of rotation range.
  • the output shaft 3 depending on certain detected angles of rotation in any rotational position within the maximum Angular range can be stopped or positioned. For example, this is conveniently done by simultaneous fluid loading of the two from the swivel wing 6 separate chambers of the work area 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Support Of The Bearing (AREA)

Claims (12)

  1. Dispositif d'entraínement en rotation actionné par un fluide, comportant un carter (1) sur lequel est monté tournant un arbre mené (3) qui coopère avec des moyens d'entraínement (5) disposés dans le carter (1), et sur lequel est prévue une partie de commande (14) qui tourne aussi et qui ressort du carter (1), laquelle partie de commande coopère avec des moyens de positionnement (15) qui permettent un positionnement de l'arbre mené (3) dans des positions angulaires en rotation déterminées, caractérisé en ce que les moyens de positionnement (15) comprennent un dispositif (23) de détection de position qui comporte un corps de base (32), relié fixement au carter (1) du dispositif d'entraínement, ainsi qu'un corps tournant (35) monté tournant dans le corps de base (32), sur le corps de base (32) étant disposés des premiers moyens de détection (36), à relier à un dispositif d'exploitation, et sur le corps tournant (35) étant disposés des deuxièmes moyens de détection (37) qui se déplacent le long des premiers moyens de détection (36), pendant le mouvement de rotation du corps tournant, en ce qu'il est prévu sur le corps tournant (35) une première partie d'accouplement (52) profilée, de forme non circulaire, et sur la partie de commande (14), une deuxième partie d'accouplement (53) profilée, de forme non circulaire, coaxiale à la première partie d'accouplement (52) et en ce qu'il est prévu un élément d'accouplement (51) qui dispose de contreparties d'accouplement (54, 55), complémentaires des parties d'accouplement (52, 53), par lesquelles l'élément d'accouplement est simultanément en engagement emboíté par complémentarité de forme avec les deux parties d'accouplement (52, 53), et qui est conformé au moins en partie en corps élastique, pour compenser des défauts d'alignement entre les axes longitudinaux (57, 58) des parties d'accouplement (52, 53).
  2. Dispositif d'entraínement en rotation selon la revendication 1, caractérisé en ce que l'élément d'accouplement (51) est entièrement conformé en un corps élastique fait d'une matière qui présente les propriétés élastiques du caoutchouc.
  3. Dispositif d'entraínement en rotation selon la revendication 1 ou 2, caractérisé en ce que la première contrepartie d'accouplement (54), qui coopère avec la première partie d'accouplement (52), présente un profil extérieur, et la deuxième contrepartie d'accouplement (55), qui coopère avec la deuxième partie d'accouplement (53), présente un profil intérieur.
  4. Dispositif d'entraínement en rotation selon l'une des revendications 1 à 3, caractérisé en ce que la première contrepartie d'accouplement (54), qui coopère avec la première partie d'accouplement (52), présente un plus grand diamètre que la deuxième contrepartie d'accouplement (55) qui coopère avec la deuxième partie d'accouplement (53).
  5. Dispositif d'entraínement en rotation selon l'une des revendications 1 à 4, caractérisé en ce que les deux contreparties d'accouplement (54, 55) sont conformées de manière à s'entourer concentriquement l'une l'autre, au moins partiellement.
  6. Dispositif d'entraínement en rotation selon l'une des revendications 1 à 5, caractérisé en ce que l'élément d'accouplement (51) est un élément annulaire sur le pourtour extérieur duquel est disposée la première contrepartie d'accouplement (54) et sur le pourtour intérieur duquel est disposée la deuxième contrepartie d'accouplement (55).
  7. Dispositif d'entraínement en rotation selon l'une des revendications 1 à 6, caractérisé en ce que les parties d'accouplement (52, 53) et les contreparties d'accouplement (54, 55) sont réalisées en tant que profilés polygonaux, notamment à la manière de profilés à angles multiples.
  8. Dispositif d'entraínement en rotation selon l'une des revendications 1 à 7, caractérisé en ce que le dispositif de détection de position (23) est réalisé en tant que dispositif à potentiomètre (38), les premiers moyens de détection (36) étant formés par au moins une bande résistante (43) et les deuxièmes moyens de détection (37), par au moins un contact frottant (47), qui palpe la bande résistante (53).
  9. Dispositif d'entraínement en rotation selon l'une des revendications 1 à 8, caractérisé en ce que le corps de base (32) et le corps tournant (35) du dispositif de détection de position (23) forment un boítier qui contient les moyens de détection (36, 37).
  10. Dispositif d'entraínement en rotation selon l'une des revendications 1 à 9, caractérisé en ce que le corps de base (32) du dispositif de détection de position (23) est fixé sur un élément de couverture (24), notamment du type capot, qui de son côté est fixé au carter (1 ) du dispositif d'entraínement.
  11. Dispositif d'entraínement en rotation selon l'une des revendications 1 à 10, caractérisé en ce que les moyens d'entraínement (5) comprennent une pale pivotante (6) sollicitée par un fluide et reliée solidairement en rotation à l'arbre mené (3).
  12. Dispositif d'entraínement en rotation selon l'une des revendications 1 à 11, caractérisé en ce que les moyens de positionnement (15) comprennent un dispositif de butée (16) qui permet de sélectionner, en particulier de manière réglable, l'angle de rotation de l'arbre mené (3), et qui est avantageusement disposé entre le carter (1) du dispostif d'entraínement et le dispositif (23) de détection de position.
EP96116969A 1995-11-18 1996-10-23 Actionneur rotatif actionné par fluide Expired - Lifetime EP0774586B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29518346U DE29518346U1 (de) 1995-11-18 1995-11-18 Fluidbetätigter Drehantrieb
DE29518346U 1995-11-18

Publications (3)

Publication Number Publication Date
EP0774586A2 EP0774586A2 (fr) 1997-05-21
EP0774586A3 EP0774586A3 (fr) 1998-08-05
EP0774586B1 true EP0774586B1 (fr) 2001-02-07

Family

ID=8015638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116969A Expired - Lifetime EP0774586B1 (fr) 1995-11-18 1996-10-23 Actionneur rotatif actionné par fluide

Country Status (3)

Country Link
EP (1) EP0774586B1 (fr)
DE (2) DE29518346U1 (fr)
ES (1) ES2153929T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29605723U1 (de) * 1996-03-28 1996-05-30 Festo Kg Fluidbetätigter Drehantrieb
DE19937597B4 (de) * 1999-08-09 2005-11-24 Abb Patent Gmbh Druckmittelbetriebener Stellantrieb
DE102004004903A1 (de) * 2004-01-30 2005-08-18 Samson Ag Antrieb zum Stellen eines Stellorgans, wie eines Ventils, und Einrichtung zum Regeln einer Stellbewegung
DE102007012398A1 (de) 2007-03-15 2008-09-18 Festo Ag & Co Schutzhaube und damit ausgestattete Antriebsvorrichtung
US11047506B2 (en) 2013-08-29 2021-06-29 Aventics Corporation Valve assembly and method of cooling
US10072773B2 (en) 2013-08-29 2018-09-11 Aventics Corporation Valve assembly and method of cooling
EP3039299B1 (fr) 2013-08-29 2021-08-11 Aventics Corporation Actionneur électro-hydraulique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196691A (en) * 1976-03-02 1980-04-08 General Research Of Electronics, Inc. Manually rotatable control or selector knob member
DE9016232U1 (fr) * 1990-11-29 1991-03-21 Fa. Andreas Stihl, 7050 Waiblingen, De
DE4105703C2 (fr) * 1991-02-21 1993-03-25 Mannesmann Ag, 4000 Duesseldorf, De
DE3943716C2 (de) * 1989-12-14 1995-01-05 Festo Kg Fluidbetätigter Schwenkkolbenmotor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386552A (en) * 1980-06-16 1983-06-07 Foxwell W John Power cylinder with internally mounted position indicator
DE8534308U1 (fr) * 1985-12-06 1989-02-23 Bergwerksverband Gmbh, 4300 Essen, De

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196691A (en) * 1976-03-02 1980-04-08 General Research Of Electronics, Inc. Manually rotatable control or selector knob member
DE3943716C2 (de) * 1989-12-14 1995-01-05 Festo Kg Fluidbetätigter Schwenkkolbenmotor
DE9016232U1 (fr) * 1990-11-29 1991-03-21 Fa. Andreas Stihl, 7050 Waiblingen, De
DE4105703C2 (fr) * 1991-02-21 1993-03-25 Mannesmann Ag, 4000 Duesseldorf, De

Also Published As

Publication number Publication date
ES2153929T3 (es) 2001-03-16
DE29518346U1 (de) 1996-01-18
DE59606421D1 (de) 2001-03-15
EP0774586A2 (fr) 1997-05-21
EP0774586A3 (fr) 1998-08-05

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