FR2666630A1 - Mechanical connection with slight angular excursion, articulated without friction about three axes - Google Patents
Mechanical connection with slight angular excursion, articulated without friction about three axes Download PDFInfo
- Publication number
- FR2666630A1 FR2666630A1 FR9011155A FR9011155A FR2666630A1 FR 2666630 A1 FR2666630 A1 FR 2666630A1 FR 9011155 A FR9011155 A FR 9011155A FR 9011155 A FR9011155 A FR 9011155A FR 2666630 A1 FR2666630 A1 FR 2666630A1
- Authority
- FR
- France
- Prior art keywords
- elements
- axes
- mechanical connection
- connection according
- friction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/72—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members with axially-spaced attachments to the coupling parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/12—Pivotal connections incorporating flexible connections, e.g. leaf springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/005—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive incorporating leaf springs, flexible parts of reduced thickness or the like acting as pivots
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/60—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising pushing or pulling links attached to both parts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Prostheses (AREA)
Abstract
Description
La présente invention concerne une liaison mécanique a faibles debatte-
ments angulaires autour de trois axes hortogonaux et concourants.The present invention relates to a mechanical linkage with low power
angular elements around three hortogonal and concurrent axes.
Traditionnellement on utilise :
La rotule dont les 3 raideurs angulatires sont nulles mais il y a pré
sence de frottements.Traditionally we use:
The patella whose 3 angular stiffnesses are zero but there are pre
friction.
Les joints de Cardan qui possèdent un anneau intermédiaire, 2 raideurs
angulaires nulles avec frottements et 1 raideur angulaire forte.Cardan joints which have an intermediate ring, 2 stiffnesses
zero angular with friction and 1 strong angular stiffness.
Les joints tripodes qui ont des caractéristiques de raideurs ansu-
laires semblables aux joints de Cardan.Tripod seals which have stiffness characteristics
similar to Cardan joints.
Les joints élastiques,dont les constructions originales reprennent le
principe des joints de Cardan avec présence d'un anneau intermédiaire.Elastic joints, whose original constructions take up the
principle of Cardan joints with the presence of an intermediate ring.
L'invention a pour objectif de concrétiser un moyen permettant de soute
nir un mobile par 3 raideurs linéaires et 3 raideurs angulaires en mal-
trisant au moins 2 de chaque,sans frottements avec le minimum de pièces.The invention aims to concretize a means for holding
a mobile by 3 linear stiffnesses and 3 angular stiffnesses in mal-
sorting at least 2 of each, without friction with the minimum of coins.
Le concept proposé consiste a relier 2 tripodes par 6 liaisons souples
et d'agir sur leur contraines initiales.The proposed concept consists in connecting 2 tripods by 6 flexible connections
and act on their initial constraints.
Dans l'exemple proposé l'élément de base de liaison est un cylindre
long, dans la réalite ce peut entre une fibre,un fil,un cSble,un élastique
Un ressort,une barre. La figure 1 représente cet élément de base (1) tangent .å un cylindre fictif (CP) d'axe (Dz) et incliné d'un angle (α) par
rapport au plan fictif (PE) contenant les axes (Ox) et (Oy) ;xyz est un
trièdre normal.In the example proposed, the basic connecting element is a cylinder
long, in reality it can between a fiber, a wire, a cable, an elastic
A spring, a bar. Figure 1 represents this basic element (1) tangent .å a fictitious cylinder (CP) of axis (Dz) and inclined by an angle (α) by
relation to the fictitious plane (PE) containing the axes (Ox) and (Oy); xyz is a
normal trihedron.
Dans la figure 2 ,par duplication et rotations successives de 60 degrés
autour de l'axe (O-) on crée les éléments (2), (3), (4), (5) et (6)
puis on repère
les extrémités de (1) par (10) et (11)
les extrémités de (2) par (21) et (20)
les entrêmités de (3) par (30) et (31)
les extrémités de (4) oar (41) et (40)
les extrémités de (5) par (50) et (51)
les etrèmités de (6) par (61) et (60)
(10) , (21) , (30) , (41) , (50) et (61) sont sur le plan fictif (PE). In Figure 2, by duplication and successive rotations of 60 degrees
around the axis (O-) we create the elements (2), (3), (4), (5) and (6)
then we spot
the ends of (1) through (10) and (11)
the ends of (2) by (21) and (20)
the ends of (3) with (30) and (31)
the ends of (4) oar (41) and (40)
the ends of (5) through (50) and (51)
the ends of (6) by (61) and (60)
(10), (21), (30), (41), (50) and (61) are fictitiously (PE).
On relie ce réseau a 2 tripodes (7) et (8i oui s'imbriquent l'un dans
l'autre sans se toucher de telle facon que les extrémités (11) et (41),
(31)et(61),(51) et (21) soient liées aux lobes de (8) et les extrémités
(10) et (40) ,(30) et (60),(50) et (20) soient liées aux lobes de (7). We connect this network to 2 tripods (7) and (8i yes overlap one in
the other without touching each other in such a way that the ends (11) and (41),
(31) and (61), (51) and (21) are linked to the lobes of (8) and the ends
(10) and (40), (30) and (60), (50) and (20) are linked to the lobes of (7).
Le cylindre fictif (CE) ayant un diamètre (DCF) dimensionné de telle
sorte que ces éléments de liaison ne se touchent pas.The fictitious cylinder (CE) having a diameter (DCF) sized such
so that these connecting elements do not touch.
L'assemblage des éléments de base est choisi en fonction du besoin utilisateur et des commodités du réalisateur.0n peut utiliser le soudage direct ,le soudage avec des intercalaires isolants (si le passage d'un courant dans le fil est souhaité) ,le collage,le pincage mécanique,le surmoulage et mme réaliser une pièce entièrement moulée. The assembly of the basic elements is chosen according to the user need and the convenience of the developer. 0n can use direct welding, welding with insulating spacers (if the passage of a current in the wire is desired), bonding , mechanical pinching, overmolding and even producing a fully molded part.
Les raideurs angulaires identiques autour des axes (Ox) et (Oy) peuvent entre diminuées,voire annulées et mme surcompensées si les éléments de base sont contraints en traction lors de l'assemblage. The identical angular stiffness around the axes (Ox) and (Oy) can be reduced, even canceled and even overcompensated if the basic elements are constrained in tension during assembly.
Les raideurs linéaires identiques sur les axes (Ox) et (Oy) varient selon l'inclinaison (t4) ,pour avoir un système isoélastique il faudrait adopter un angle Tt tel que sin (cO 4/3 soit 35,25 degrés (complément de l'angle de la trisectrice d'un trièdre avec une de ses arêtes). The identical linear stiffnesses on the axes (Ox) and (Oy) vary according to the inclination (t4), to have an isoelastic system it would be necessary to adopt an angle Tt such that sin (cO 4/3 is 35.25 degrees (complement of the angle of the trisector of a trihedron with one of its edges).
Les figures 3 t 5,et 6 a B illustrent la possibilite de concevoir des tripodes de formes très variées. Figures 3 t 5, and 6 a B illustrate the possibility of designing tripods of very varied shapes.
Les efforts de traction des éléments de base peuvent entre modulés si le dispositif comporte des vérins Ou si les éléments de base sont dilatés thermiquement. The tensile forces of the basic elements can between modulated if the device comprises jacks Or if the basic elements are thermally expanded.
Rien ne s'oppose d'adjoindre des capteurs d'effort,de déplacement OU de température ou simplement utiliser la force centrifuge pour mattriser les compensations. There is nothing to prevent adding force, displacement OR temperature sensors or simply using centrifugal force to control the compensations.
Cette articulation pourra entre préconisée lorsqu'on recherchera -L'absence de frottements donc de lubrification par rapport aux rotules conventionnelles. This joint may be recommended when looking for -The absence of friction therefore lubrication compared to conventional ball joints.
-Une animation d'agrément:avec une faible raideur angulaire les oscillations deviennent perceptibles à l'oeil. -An animation of pleasure: with a low angular stiffness the oscillations become perceptible to the eye.
-Une rotation controlée pour robotique ou visées : en agissant sur les éléments de base par des vérinsydes éléments piézo-electriques ou simplement en dilatant par échauffement les éléments de base dans un sys tème asservi.-A controlled rotation for robotics or aimed: by acting on the basic elements by piezoelectric elements cylinders or simply by expanding by heating the basic elements in a servo system.
-Une raideur angulaire pratiquement nulle sur 2 axes hortogonaux pour capteurs inertiels
-Une mesure d'efforts ou de déplacements multidirectionnels si chaque élément est muni d'un capteur d'effort on a alors un capteur unique pour six informations.-A virtually zero angular stiffness on 2 hortogonal axes for inertial sensors
-A multidirectional effort or displacement measurement if each element is fitted with an effort sensor, then there is a single sensor for six pieces of information.
-L'isoélasticite dans certains amortisseurs. -Isoelasticity in some shock absorbers.
-Un appui rotulé pour avoir une large assise sur des plans déformés. -A swivel support to have a wide seat on deformed planes.
-Une fréquence propre particulière dans les accouplements. -A particular natural frequency in the couplings.
-Une articulation destabilisable à partir d'un seuil critique par mise mn contrainte des éléments de base -A destabilizable joint starting from a critical threshold by setting the basic elements
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9011155A FR2666630B1 (en) | 1990-09-07 | 1990-09-07 | MECHANICAL LINK WITH LOW ANGULAR TRAVEL ARTICULATED WITHOUT FRICTION ACCORDING TO 3 AXES. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9011155A FR2666630B1 (en) | 1990-09-07 | 1990-09-07 | MECHANICAL LINK WITH LOW ANGULAR TRAVEL ARTICULATED WITHOUT FRICTION ACCORDING TO 3 AXES. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2666630A1 true FR2666630A1 (en) | 1992-03-13 |
FR2666630B1 FR2666630B1 (en) | 1995-08-04 |
Family
ID=9400182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9011155A Expired - Fee Related FR2666630B1 (en) | 1990-09-07 | 1990-09-07 | MECHANICAL LINK WITH LOW ANGULAR TRAVEL ARTICULATED WITHOUT FRICTION ACCORDING TO 3 AXES. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2666630B1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2781264A1 (en) * | 1998-07-20 | 2000-01-21 | Suisse Electronique Microtech | FLEXIBLE PIVOT WITH INTERIOR PIVOT AXIS |
FR2817784A1 (en) * | 2000-12-08 | 2002-06-14 | Renault Automation Comau | MACHINE TOOL, PARTICULARLY WITH A PARALLEL ARCHITECTURE HAVING DEFORMATION ARTICULATIONS AND ADAPTED DEFORMATION ARTICULATION |
EP1228961A3 (en) * | 2001-02-02 | 2002-12-18 | Agusta S.p.A. | Constant-velocity transmission for aircraft rotor |
EP2031258A1 (en) * | 2007-08-29 | 2009-03-04 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Flexural joint |
EP2497428A1 (en) | 2011-03-11 | 2012-09-12 | EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt | Flexible tools |
CN104235215A (en) * | 2013-06-12 | 2014-12-24 | 镇江兴达联轴器有限公司 | Flexible coupler |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1640670A (en) * | 1925-12-16 | 1927-08-30 | Charles D R Schaeffer | Shaft construction |
US2950079A (en) * | 1956-06-04 | 1960-08-23 | North American Aviation Inc | Three axis flexure pivot |
US3288421A (en) * | 1965-03-29 | 1966-11-29 | Everett R Peterson | Movable and rotatable top |
US3360255A (en) * | 1965-06-11 | 1967-12-26 | Alfred N Ormond | Universal flexure unit |
DE2741603A1 (en) * | 1976-09-16 | 1978-03-23 | Zeller Corp | Constant velocity universal joint for torque transmission - uses high strength fibres bridging gap between discs on shaft ends |
DE3241373A1 (en) * | 1982-11-09 | 1984-05-10 | Anschütz & Co GmbH, 2300 Kiel | Spring joint |
US4511115A (en) * | 1984-01-27 | 1985-04-16 | Chicago Bridge & Iron Company | Passive structure with energy absorbing capacity |
-
1990
- 1990-09-07 FR FR9011155A patent/FR2666630B1/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1640670A (en) * | 1925-12-16 | 1927-08-30 | Charles D R Schaeffer | Shaft construction |
US2950079A (en) * | 1956-06-04 | 1960-08-23 | North American Aviation Inc | Three axis flexure pivot |
US3288421A (en) * | 1965-03-29 | 1966-11-29 | Everett R Peterson | Movable and rotatable top |
US3360255A (en) * | 1965-06-11 | 1967-12-26 | Alfred N Ormond | Universal flexure unit |
DE2741603A1 (en) * | 1976-09-16 | 1978-03-23 | Zeller Corp | Constant velocity universal joint for torque transmission - uses high strength fibres bridging gap between discs on shaft ends |
DE3241373A1 (en) * | 1982-11-09 | 1984-05-10 | Anschütz & Co GmbH, 2300 Kiel | Spring joint |
US4511115A (en) * | 1984-01-27 | 1985-04-16 | Chicago Bridge & Iron Company | Passive structure with energy absorbing capacity |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2781264A1 (en) * | 1998-07-20 | 2000-01-21 | Suisse Electronique Microtech | FLEXIBLE PIVOT WITH INTERIOR PIVOT AXIS |
EP0974761A1 (en) * | 1998-07-20 | 2000-01-26 | C.S.E.M. Centre Suisse D'electronique Et De Microtechnique Sa | Flexible pivot with internal swinging axis |
US6267363B1 (en) | 1998-07-20 | 2001-07-31 | Csem Centre Suisse D'electronique Et De Microtechnique Sa | Flexible pivot with internal pivoting axis |
FR2817784A1 (en) * | 2000-12-08 | 2002-06-14 | Renault Automation Comau | MACHINE TOOL, PARTICULARLY WITH A PARALLEL ARCHITECTURE HAVING DEFORMATION ARTICULATIONS AND ADAPTED DEFORMATION ARTICULATION |
EP1228961A3 (en) * | 2001-02-02 | 2002-12-18 | Agusta S.p.A. | Constant-velocity transmission for aircraft rotor |
US6607357B2 (en) | 2001-02-02 | 2003-08-19 | Agusta S.P.A. | Aircraft constant-velocity transmission rotor |
EP2031258A1 (en) * | 2007-08-29 | 2009-03-04 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Flexural joint |
WO2009028941A1 (en) * | 2007-08-29 | 2009-03-05 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Flexural joint |
EP2497428A1 (en) | 2011-03-11 | 2012-09-12 | EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt | Flexible tools |
WO2012123281A1 (en) | 2011-03-11 | 2012-09-20 | Empa, Eidgenössische Materialprüfungs- Und Forschungsanstalt | Resilient tools |
CN104235215A (en) * | 2013-06-12 | 2014-12-24 | 镇江兴达联轴器有限公司 | Flexible coupler |
Also Published As
Publication number | Publication date |
---|---|
FR2666630B1 (en) | 1995-08-04 |
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ST | Notification of lapse |