WO1992001204A1 - Device for measuring the pivoting angle of a clamping apparatus - Google Patents

Device for measuring the pivoting angle of a clamping apparatus Download PDF

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Publication number
WO1992001204A1
WO1992001204A1 PCT/FR1991/000560 FR9100560W WO9201204A1 WO 1992001204 A1 WO1992001204 A1 WO 1992001204A1 FR 9100560 W FR9100560 W FR 9100560W WO 9201204 A1 WO9201204 A1 WO 9201204A1
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WO
WIPO (PCT)
Prior art keywords
ball
clamping
tool
spherical
hand
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Application number
PCT/FR1991/000560
Other languages
French (fr)
Inventor
Gines Canovas
Marc Debilly
Original Assignee
Gines Canovas
Marc Debilly
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Filing date
Publication date
Application filed by Gines Canovas, Marc Debilly filed Critical Gines Canovas
Publication of WO1992001204A1 publication Critical patent/WO1992001204A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes

Definitions

  • the industrial sector in general and more particularly that of the automobile uses more and more mechanical assemblies which must, during their assembly, and especially during their use, undergo adjustments of precision requiring an angular movement of a fraction of turns such as for tightening the cylinder heads of heat engines or the half-opening of the butterflies of the fuel supply system of automobiles.
  • such devices include a graduated dial fixed on the head of a clamping tool and an index provided with fixing means on a fixed support.
  • fixing means are constituted either by a magnet connected by a hose to the body of the device, as shown in DEU 7910351, or by a clamp intended to hold the device in a fixed position on the motor.
  • These fixing means are less and less usable on current engines, either because the engines are more and more made of non-magnetic materials, or for those using a clamp because there is not always prominence on the engine to serve as a support for it.
  • FR-A-2328954 also discloses an angular measurement device adaptable to a key requiring no fixing and using a body which, mounted floating but with great inertia in a housing linked to the key, is provided with a mark cooperating with a graduation of the housing.
  • the present invention aims to remedy these drawbacks by providing a device which not only is independent of the environment, but can also provide the precise angular measurements expected, regardless of the position in space of the clamp on which it is mounted.
  • This device is of the type comprising, on the one hand, a body, made in whole or in part of transparent material, integral with the clamping device, provided with a spherical housing co-axial to the pivot axis of this tool containing, in a stabilizing liquid, a free spherical ball in rotation, and, on the other hand, on one or the other of the ball and body elements, at least one reference capable of cooperating with at least one graduation of l other element.
  • the body is made of non-magnetic material, while the spherical ball is provided with a magnet giving it a stable position in the horizontal plane relative to magnetic north and is balanced to have a stable position in the vertical plane .
  • the spherical ball when the key is rotated, the spherical ball retains its position in alignment with magnetic north and allows, by displacement of the graduation surrounding the spherical housing with respect to its reference, to indicate at any time l angle made by the handle from the starting point of tightening and this, regardless of the position in space of the clamping member.
  • this device is fixedly or removably mounted on the handle of a clamping member or on the drive square of a ratchet wrench.
  • Figure 1 is a perspective view with partial section showing an embodiment of the device adaptable to a wrench
  • Figure 2 is a side view in longitudinal section of the embodiment of Figure 1 in the case of its assembly on a wrench
  • Figure 3 is a side view in cross section of another embodiment of the device showing it in the case of its application on a ratchet
  • Figure 4 is a side view in cross section of a third form of the device in the case of its permanent mounting on a tightening key.
  • the reference 2 designates a body of non-magnetic material and, for example, of synthetic material, comprising a hemispherical cover 2a made of transparent material delimiting a spherical housing 2b for a spherical ball 7.
  • 3 designates a shaped dial crown bearing at least a graduation 4 of the angles of rotation. The crown of dial 3 is mounted to rotate freely but with friction on the base of the cover 2a and so as to be substantially in the equatorial plane 7a of the ball 7.
  • This ball 7 is made of synthetic material and is molded onto a solid magnet 5 which is offset relative to its equatorial plane 7a, so as to also constitute a balancing mass for the ball in the vertical plane.
  • This ball is provided with marks which are constituted by circumferential marks, respectively, 6a arranged along its equator, and 6b arranged along two meridians offset by 90 °.
  • the external diameter of the ball 7 is less than the internal diameter of the spherical housing 2b so as to form a space 11 for a suitable liquid insulating the ball from any friction contact with the body 2.
  • FIG. 1 and 2 being intended to be attached to a tightening tool, for example on a wrench 9 shown in phantom in Figure 2, its body 2 is provided with a fixing means on the handle of this key.
  • this fixing means is constituted by a yoke 10, formed at one of the ends of this body 2 and able to get on with play on the handle of the tool 9.
  • a screw 12 screwed into one of the wings of the yoke, secures the body 2 with the handle of the tool.
  • Figure 2 shows that, when the device according to the invention is in place, the vertical axis x'-x of the ball 7 is aligned with the longitudinal axis y '-y of the square for driving the tightening key 9.
  • the body 2 does not is not secured to this operating arm, as in the preceding embodiment, but as shown in Figure 3, the square 13 of the ratchet 14 used to perform this type of tightening.
  • the body 2 of the device moreover identical in all respects to that described above, has, in cross section and in its part comprising the housing 2b for the ball 7, a "C" shape, the upper wing of which 2c is formed by the body and the lower wing 15 of which is connected to the body by a core 16.
  • the interval E between the wings 2c and 15 is at least equal to the height H of the drive head with the square 13 of the ratchet.
  • the wing 15 is crossed by a cutout 17 which, of square section and of the same dimensions as those of the drive square 13 of the key, is arranged in alignment with the axis x'-x of the spherical ball 7 .
  • this device can, thanks to the solid magnet 5, giving the ball a stable position in the vertical plane but also in the horizontal plane, be used to measure the angle of rotation of a tightening operation whatever the position in the space of the key carrying this device and more precisely that the key is used from above, as shown in the drawing, or from below or in any intermediate position.
  • This possibility is permitted thanks to the marks 6a and 6b arranged along the equator and along at least two meridians of the ball, marks which, advantageously, are colored in different ways.
  • the angular measurement device is simple and inexpensive to produce, works regardless of the environment and the nature of the parts on which controlled tightening must be carried out, and allows controlled measurements to be made in all positions.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

The device for measuring the pivoting angle of a clamping apparatus comprises, firstly, a body (2-2a) wholly or partially made of a transparent material, rigidly fixed to said clamping apparatus, provided with a spherical housing (2b) which is coaxial with the tool's pivot axis, and containing a freely rotatable spherical ball in a stabilizing liquid; and secondly, one or more indicia arranged on either of the ball or body (2a) elements for interaction with at least one graduation on the other element. Said body (2-2a) is made of a non-magnetic material while said ball is provided with a solid magnet (5) which gives it horizontal stability in relation to the magnetic north and vertical stability and equilibrium.

Description

"Dispositif pour la mesure de l'angle de rotation d'un organe de serrage" . "Device for measuring the angle of rotation of a clamping member".
Le secteur industriel en général et plus particulièrement celui de l'automobile utilise de plus en plus des assemblages mécaniques qui doivent, lors de leur montage, et surtout au cours de leur utilisation, subir des réglages de précision nécessitant un mouvement angulaire d'une fraction de tour tels que pour serrage des culasses des moteurs thermiques ou l'entrebâillement des papillons du système d'alimentation en carburant des automobiles.The industrial sector in general and more particularly that of the automobile uses more and more mechanical assemblies which must, during their assembly, and especially during their use, undergo adjustments of precision requiring an angular movement of a fraction of turns such as for tightening the cylinder heads of heat engines or the half-opening of the butterflies of the fuel supply system of automobiles.
Pour réaliser correctement ces réglages, il est nécessaire de mesurer l'angle de rotation appliqué aux éléments composant ces assemblages à l'aide d'un dispositif mécanique.To correctly carry out these adjustments, it is necessary to measure the angle of rotation applied to the elements making up these assemblies using a mechanical device.
Actuellement, et comme montré par DE-U-7910351 , de tels dispositifs comprennent un cadran gradué fixé sur la tête d'un outil de serrage et un index doté de moyens de fixation sur un support fixe. Ces moyens de fixation sont constitués soit par un aimant relié par un flexible au corps du dispositif, comme montré dans DEU 7910351 , soit par une pince destinée à maintenir le dispositif dans une position fixe sur le moteur. Ces moyens de fixation sont de moins en moins utilisables sur les moteurs actuels, soit parce que les moteurs sont de plus en plus réalisés en matériaux amagnétiques, soit pour ceux mettant en oeuvre une pince parce qu'il n'existe pas toujours de proéminence sur le moteur pour servir d'appui à celle-ci.Currently, and as shown by DE-U-7910351, such devices include a graduated dial fixed on the head of a clamping tool and an index provided with fixing means on a fixed support. These fixing means are constituted either by a magnet connected by a hose to the body of the device, as shown in DEU 7910351, or by a clamp intended to hold the device in a fixed position on the motor. These fixing means are less and less usable on current engines, either because the engines are more and more made of non-magnetic materials, or for those using a clamp because there is not always prominence on the engine to serve as a support for it.
On connaît par ailleurs par FR-A-2328954 un dispositif de mesure angulaire adaptable à une clé ne nécessitant aucune fixation et mettant en oeuvre un corps qui, monté flottant mais avec une grande inertie dans un boîtier lié à la clé, est muni d'un repère coopérant avec une graduation du boîtier.FR-A-2328954 also discloses an angular measurement device adaptable to a key requiring no fixing and using a body which, mounted floating but with great inertia in a housing linked to the key, is provided with a mark cooperating with a graduation of the housing.
L'usage montre qu'un tel dispositif ne peut être utilisé que pour des serrages s'effectuant autour d'un axe vertical, à défaut de quoi les frottements parasites perturbent l'inertie du corps et en conséquence la mesure. Cela est d'autant plus regrettable que les serrages avec contrôle de l'angle de rotation doivent être effectués pour toutes les positions angulaires de la clé par rapport à la verticale, par dessus ou par dessous la construction nécessitant un tel contrôle.Usage shows that such a device can only be used for tightening operations carried out around a vertical axis, failing which the parasitic friction disturbs the inertia of the body and consequently the measurement. This is all the more regrettable as tightening with control of the angle of rotation must be carried out for all the angular positions of the key relative to the vertical, above or below the construction requiring such control.
La présente invention a pour but de remédier à ces inconvénients en fournissant un dispositif qui, non seulement est indépendant de l'environnement, mais peut aussi fournir les mesures angulaires précises attendues, quelle que soit la position dans l'espace de l'organe de serrage sur lequel il est monté. Ce dispositif est du type comportant, d'une part, un corps, réalisé en tout ou partie en matériau transparent, solidaire de l'appareil de serrage, muni d'un logement sphérique co-axial à l'axe de pivotement de cet outil contenant, dans un liquide de stabilisation, une boule sphérique libre en rotation, et, d'autre part, sur l'un ou l'autre des éléments boule et corps, au moins un repère apte à coopérer avec au moins une graduation de l'autre élément.The present invention aims to remedy these drawbacks by providing a device which not only is independent of the environment, but can also provide the precise angular measurements expected, regardless of the position in space of the clamp on which it is mounted. This device is of the type comprising, on the one hand, a body, made in whole or in part of transparent material, integral with the clamping device, provided with a spherical housing co-axial to the pivot axis of this tool containing, in a stabilizing liquid, a free spherical ball in rotation, and, on the other hand, on one or the other of the ball and body elements, at least one reference capable of cooperating with at least one graduation of l other element.
Selon l'invention, le corps est réalisé en matériau amagnétique, tandis que la boule sphérique est munie d'un aimant lui donnant une position stable dans le plan horizontal par rapport au nord magnétique et est équilibrée pour posséder une position stable dans le plan vertical.According to the invention, the body is made of non-magnetic material, while the spherical ball is provided with a magnet giving it a stable position in the horizontal plane relative to magnetic north and is balanced to have a stable position in the vertical plane .
Grâce à cet agencement, lorsque la clé est entraînée en rotation, la boule sphérique conserve sa position en alignement avec le nord magnétique et permet, par déplacement de la graduation entourant le logement sphérique par rapport à son repère, d'indiquer à tout instant l'angle effectué par le manche à partir du point de départ de serrage et, cela, quelle que soit la position dans l'espace de l'organe de serrage.Thanks to this arrangement, when the key is rotated, the spherical ball retains its position in alignment with magnetic north and allows, by displacement of the graduation surrounding the spherical housing with respect to its reference, to indicate at any time l angle made by the handle from the starting point of tightening and this, regardless of the position in space of the clamping member.
Selon les formes d'exécution, ce dispositif est monté de manière fixe ou amovible sur le manche d'un organe de serrage ou sur le carré d'entraînement d'une clé à cliquet. D'autres caractéristiques et avantages ressortiront de la description qui suit en référence au dessin schématique annexé représentant à titre d'exemples non limitatifs, plusieurs formes d'exécution de ce dispositif.According to the embodiments, this device is fixedly or removably mounted on the handle of a clamping member or on the drive square of a ratchet wrench. Other characteristics and advantages will emerge from the description which follows with reference to the appended schematic drawing representing, by way of nonlimiting examples, several embodiments of this device.
Figure 1 est une vue en perspective avec coupe partielle montrant une forme d'exécution du dispositif adaptable sur une clé de serrage, Figure 2 est une vue de côté en coupe longitudinale de la forme d'exécution de figure 1 dans le cas de son montage sur une clé de serrage,Figure 1 is a perspective view with partial section showing an embodiment of the device adaptable to a wrench, Figure 2 is a side view in longitudinal section of the embodiment of Figure 1 in the case of its assembly on a wrench,
Figure 3 est une vue de côté en coupe transversale d'une autre forme d'exécution du dispositif le montrant dans le cas de son application sur une clé à cliquet, Figure 4 est une vue de côté en coupe transversale d'une troisième forme du dispositif dans le cas de son montage à demeure sur une clé de serrage.Figure 3 is a side view in cross section of another embodiment of the device showing it in the case of its application on a ratchet, Figure 4 is a side view in cross section of a third form of the device in the case of its permanent mounting on a tightening key.
Aux figures 1 et 2, la référence 2 désigne un corps en matériau amagnétique et, par exemple, en matière synthétique, comportant un capot hémisphérique 2a réalisé en matière transparente délimitant un logement sphérique 2b pour une boule sphérique 7. 3 désigne un cadran en forme de couronne portant au moins une graduation 4 des angles de rotation. La couronne du cadran 3 est montée libre en rotation mais avec frottement sur la base du capot 2a et de manière à être sensiblement dans le plan équatorial 7a de la boule 7.In Figures 1 and 2, the reference 2 designates a body of non-magnetic material and, for example, of synthetic material, comprising a hemispherical cover 2a made of transparent material delimiting a spherical housing 2b for a spherical ball 7. 3 designates a shaped dial crown bearing at least a graduation 4 of the angles of rotation. The crown of dial 3 is mounted to rotate freely but with friction on the base of the cover 2a and so as to be substantially in the equatorial plane 7a of the ball 7.
Cette boule 7 est réalisée en matière synthétique et est surmoulée sur un aimant massif 5 qui est décalé par rapport à son plan équatorial 7a, de manière à constituer également masse d'équilibrage de la boule dans le plan vertical.This ball 7 is made of synthetic material and is molded onto a solid magnet 5 which is offset relative to its equatorial plane 7a, so as to also constitute a balancing mass for the ball in the vertical plane.
Cette boule est munie de repères qui sont constitués par des marques circonférencielles, respectivement, 6a disposée suivant son équateur, et 6b disposées suivant deux méridiens décalés de 90°. De façon connue, le diamètre externe de la boule 7 est inférieur au diamètre interne du logement sphérique 2b de manière à former un espace 11 pour un liquide approprié isolant la boule de tout contact de frottement avec le corps 2.This ball is provided with marks which are constituted by circumferential marks, respectively, 6a arranged along its equator, and 6b arranged along two meridians offset by 90 °. In known manner, the external diameter of the ball 7 is less than the internal diameter of the spherical housing 2b so as to form a space 11 for a suitable liquid insulating the ball from any friction contact with the body 2.
Le dispositif représenté aux figures 1 et 2 étant destiné à être rapporté sur un outil de serrage, par exemple sur une clé 9 représentée en traits mixtes à la figure 2, son corps 2 est muni d'un moyen de fixation sur le manche de cette clé. Dans cette forme d'exécution, ce moyen de fixation est constitué par une chape 10, ménagée à l'une des extrémités de ce corps 2 et apte à s'enfourcher avec jeu sur le manche de l'outil 9. Une vis 12, vissée dans l'une des ailes de la chape, assure la solidarisation du corps 2 avec le manche de l'outil.The device shown in Figures 1 and 2 being intended to be attached to a tightening tool, for example on a wrench 9 shown in phantom in Figure 2, its body 2 is provided with a fixing means on the handle of this key. In this embodiment, this fixing means is constituted by a yoke 10, formed at one of the ends of this body 2 and able to get on with play on the handle of the tool 9. A screw 12, screwed into one of the wings of the yoke, secures the body 2 with the handle of the tool.
La figure 2 montre que, lorsque le dispositif selon l'invention est en place, l'axe vertical x'-x de la boule 7 est aligné avec l'axe longitudinal y' -y du carré d'entraînement de la clé de serrage 9.Figure 2 shows that, when the device according to the invention is in place, the vertical axis x'-x of the ball 7 is aligned with the longitudinal axis y '-y of the square for driving the tightening key 9.
Lorsque l'opérateur effectue un serrage avec mesure angulaire au moyen d'un organe d'entraînement rapporté sur le carré de la clé de serrage 9, il commence d'abord par sélectionner visuellement l'un des repères 6b ou 6a selon l'inclinaison de la clé, et fait pivoter le cadran 3 jusqu'à ce que le point 0 de ce cadran coïncide avec le repère sélectionné de la boule. Lors du serrage qui suit cette phase de réglage, la boule 7, qui est équilibrée dans le plan vertical par le poids de l'aimant et qui est aussi positionné dans le plan horizontal en direction du nord magnétique, conserve sa position pendant que l'outil, le corps 2 et le cadran 3 pivotent autour d'elle. Il en résulte que, durant le pivotement de l'outil, l'opérateur doit surveiller le déplacement de la graduation du cadran 3 par rapport au repère 6a ou 6b de la boule jusqu'à ce que soit atteinte une valeur angulaire correspondant à l'angle recherché.When the operator performs tightening with angular measurement by means of a drive member attached to the square of the tightening wrench 9, he first begins by visually selecting one of the marks 6b or 6a according to the inclination of the key, and rotates the dial 3 until point 0 of this dial coincides with the selected mark of the ball. During the tightening which follows this adjustment phase, the ball 7, which is balanced in the vertical plane by the weight of the magnet and which is also positioned in the horizontal plane in the direction of magnetic north, retains its position while the tool, the body 2 and the dial 3 pivot around it. It follows that, during the pivoting of the tool, the operator must monitor the movement of the graduation of the dial 3 relative to the mark 6a or 6b of the ball until an angular value corresponding to the angle sought.
Il est évident que l'opérateur peut, dans la phase de réglage, procéder de façon inverse, c'est à dire mettre en coïncidence avec le repère sélectionné de la boule, la graduation ayant la valeur angulaire correspondant à l'angle recherché, afin que le serrage soit arrêté lorsque le repère de la boule vient en coïncidence avec la graduation 0 du cadran 3. L'usage montre que cette solution est la plus satisfaisante car elle permet à l'opérateur d'interrompre provisoirement le serrage et de le reprendre sans que cela est une influence sur l'angle de pivotement communiqué par la clé 9 à l'organe serré.It is obvious that the operator can, in the adjustment phase, proceed in the opposite way, that is to put in coincidence with the selected reference of the ball, the graduation having the angular value corresponding to the desired angle, so that the tightening is stopped when the mark on the ball coincides with the 0 graduation of dial 3. Usage shows that this solution is the most satisfactory because it allows the operator to temporarily interrupt tightening and resuming it without this having an influence on the pivot angle communicated by the key 9 to the tight member.
Lorsque le réglage ne peut pas être effectué en une seule manoeuvre rotative et nécessite, en raison de l'environnement de l'assemblage soumis au réglage, plusieurs fractions successives de rotation obligeant le retour en arrière du bras de manoeuvre, le corps 2 n'est pas rendu solidaire de ce bras de manoeuvre, comme dans la forme d'exécution qui précède, mais comme montré à la figure 3, du carré 13 de la clé à cliquet 14 utilisée pour effectuer ce type de serrage. Dans ces conditions, le corps 2 du dispositif, par ailleurs en tous points identiques à celui décrit précédemment, présente, en section transversale et dans sa partie comportant le logement 2b pour la boule 7, une forme en "C" dont l'aile supérieure 2c est constituée par le corps et dont l'aile inférieure 15 est reliée au corps par une âme 16. L'intervalle E entre les ailes 2c et 15 est au moins égal à la hauteur H de la tête d'entraînement avec le carré 13 de la clé à cliquet. L'aile 15 est traversée par une découpe 17 qui, de section carrée et de mêmes dimensions que celles du carré d'entraînement 13 de la clé, est disposée dans l'alignement de l'axe x'-x de la boule sphérique 7.When the adjustment cannot be carried out in a single rotary maneuver and requires, because of the environment of the assembly subjected to the adjustment, several successive fractions of rotation requiring the return back of the maneuvering arm, the body 2 does not is not secured to this operating arm, as in the preceding embodiment, but as shown in Figure 3, the square 13 of the ratchet 14 used to perform this type of tightening. Under these conditions, the body 2 of the device, moreover identical in all respects to that described above, has, in cross section and in its part comprising the housing 2b for the ball 7, a "C" shape, the upper wing of which 2c is formed by the body and the lower wing 15 of which is connected to the body by a core 16. The interval E between the wings 2c and 15 is at least equal to the height H of the drive head with the square 13 of the ratchet. The wing 15 is crossed by a cutout 17 which, of square section and of the same dimensions as those of the drive square 13 of the key, is arranged in alignment with the axis x'-x of the spherical ball 7 .
On conçoit aisément que, lorsque le carré 13 est glissé dans la découpe 17, sa rotation est transmise immédiatement au corps 2 et, en conséquence, a la graduation 4 portée par le cadran 3 entourant la boule sphérique 7. Dans la forme d'exécution représentée à la figure 4, le corps 2d contenant là boule 7 est fixé de manière permanente par des pattes 18 sur la tête d'entraînement 19 d'une clé classique du type représenté en 9 à la figure 2.It is easily understood that, when the square 13 is slid into the cutout 17, its rotation is immediately transmitted to the body 2 and, consequently, to the graduation 4 carried by the dial 3 surrounding the spherical ball 7. In the embodiment shown in FIG. 4, the body 2d containing the ball 7 therein is permanently fixed by lugs 18 on the drive head 19 of a conventional key of the type shown at 9 in FIG. 2.
Quelle que soit sa forme d'exécution, ce dispositif peut, grâce à l'aimant massif 5, donnant à la boule une position stable dans le plan vertical mais aussi dans le plan horizontal, être utilisé pour mesurer l'angle de rotation d'une opération de serrage quelle que soit la position dans l'espace de la clé portant ce dispositif et plus précisément que la clé soit utilisée par dessus, comme montré au dessin, ou par dessous ou dans une position intermédiaire quelconque. Cette possibilité est permise grâce aux repères 6a et 6b disposés suivant l'équateur et suivant au moins deux méridiens de la boule, repères qui, avantageusement, sont colorés de manières différentes.Whatever its form of execution, this device can, thanks to the solid magnet 5, giving the ball a stable position in the vertical plane but also in the horizontal plane, be used to measure the angle of rotation of a tightening operation whatever the position in the space of the key carrying this device and more precisely that the key is used from above, as shown in the drawing, or from below or in any intermediate position. This possibility is permitted thanks to the marks 6a and 6b arranged along the equator and along at least two meridians of the ball, marks which, advantageously, are colored in different ways.
Il ressort de ce qui précède que le dispositif de mesure angulaire, selon l'invention, est simple et peu onéreux à réaliser, fonctionne indépendamment de l'environnement et de la nature des pièces sur lesquelles les serrages contrôlés doivent être effectués, et permet d'effectuer des mesures contrôlées dans toutes les positions. It appears from the above that the angular measurement device, according to the invention, is simple and inexpensive to produce, works regardless of the environment and the nature of the parts on which controlled tightening must be carried out, and allows controlled measurements to be made in all positions.

Claims

REVENDICATIONS
1. Dispositif pour la mesure de l'angle de rotation d'un organe de serrage du type comportant, d'une part, un corps réalisé (2-2a) en tout ou partie en matériau transparent, solidaire de l'appareil de serrage, muni d'un logement sphérique (2b) coaxial à l'axe de pivotement de cet outil et contenant, dans un liquide de stabilisation, une boule sphérique (7) libre en rotation et, d'autre part, sur l'un ou l'autre des éléments boule (7) et corps (2a), au moins un repère apte à coopérer avec au moins une graduation de l'autre élément, caractérisé en ce que le corps (2-2a-2c) est réalisé en matériau amagnétique, tandis que la boule (7) est munie d'un aimant massif (5) lui donnant une position stable dans le plan horizontal par rapport au nord magnétique et une position stable et équilibrée dans le plan vertical.1. Device for measuring the angle of rotation of a clamping member of the type comprising, on the one hand, a body made (2-2a) in whole or in part of transparent material, integral with the clamping device , provided with a spherical housing (2b) coaxial with the pivot axis of this tool and containing, in a stabilizing liquid, a spherical ball (7) free to rotate and, on the other hand, on one or the other of the elements ball (7) and body (2a), at least one mark capable of cooperating with at least one graduation of the other element, characterized in that the body (2-2a-2c) is made of material non-magnetic, while the ball (7) is provided with a solid magnet (5) giving it a stable position in the horizontal plane relative to the magnetic north and a stable and balanced position in the vertical plane.
2. Dispositif selon la revendication 1 , caractérisé en ce que les repères (6a-6b) ménagés sur la boule sphérique (7) sont constitués par des marques circonférencielles disposées, respectivement, sur son équateur et sur au moins deux méridiens décalés de 90°.2. Device according to claim 1, characterized in that the marks (6a-6b) formed on the spherical ball (7) are constituted by circumferential marks arranged, respectively, on its equator and on at least two meridians offset by 90 ° .
3. Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé en ce que l'aimant massif (5) sur lequel est surmoulée la boule (7) est décalé radialement sur la verticale par rapport au plan équatorial horizontal (7a) de cette boule.3. Device according to any one of claims 1 and 2, characterized in that the solid magnet (5) on which is molded the ball (7) is offset radially on the vertical relative to the horizontal equatorial plane (7a) of this ball.
4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le corps (2) est muni de moyens de fixation (10-12) coopérant avec le bras de manoeuvre de l'outil de serrage.4. Device according to any one of claims 1 to 3, characterized in that the body (2) is provided with fixing means (10-12) cooperating with the operating arm of the clamping tool.
5. Dispositif selon la revendication 4, caractérisé en ce que les moyens de fixation sont constitués par une chape (10) apte à s'enfourcher sur le bras de manoeuvre de l'outil de serrage (9) et comportant au moins une vis de serrage transversale (12) vissée dans l'une des ailes de cette chape.5. Device according to claim 4, characterized in that the fixing means consist of a yoke (10) capable of being mounted on the operating arm of the clamping tool (9) and comprising at least one screw transverse clamping (12) screwed into one of the wings of this yoke.
6. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le corps (2) est muni de moyens de fixation(16-15) coopérant avec le carré porte-douille (13) d'un outil de serrage avec ou sans cliquet.6. Device according to any one of claims 1 to 3, characterized in that the body (2) is provided with fixing means (16-15) cooperating with the socket-holder square (13) of a clamping tool with or without ratchet.
7. Dispositif selon la revendication 6, caractérisé en ce que son corps (2) présente, dans sa partie (2c) comportant le logement sphérique, une section . transversale en "C" dont l'aile inférieure (15), d'une part, est séparée de l'aile supérieure (2c) par une distance (E) au moins égale à la hauteur (H) de la tête d'entraînement (14) de la clé et, d'autre part, est traversée par une découpe (17) de section carrée, de mêmes dimensions que celle du carré d'entraînement (13) de la clé. 7. Device according to claim 6, characterized in that its body (2) has, in its part (2c) comprising the spherical housing, a section. transverse in "C" whose lower wing (15), on the one hand, is separated from the upper wing (2c) by a distance (E) at least equal to the height (H) of the drive head (14) of the key and, on the other hand, is crossed by a cutout (17) of square section, of the same dimensions as that of the drive square (13) of the key.
8. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le corps (2d) est monté à demeure sur l'outil de serrage (9). 8. Device according to any one of claims 1 to 3, characterized in that the body (2d) is permanently mounted on the clamping tool (9).
PCT/FR1991/000560 1990-07-11 1991-07-10 Device for measuring the pivoting angle of a clamping apparatus WO1992001204A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009195A FR2664690B1 (en) 1990-07-11 1990-07-11 DEVICE FOR MEASURING A ROTATION MANEUVER.
FR90/09195 1990-07-11

Publications (1)

Publication Number Publication Date
WO1992001204A1 true WO1992001204A1 (en) 1992-01-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1991/000560 WO1992001204A1 (en) 1990-07-11 1991-07-10 Device for measuring the pivoting angle of a clamping apparatus

Country Status (3)

Country Link
AU (1) AU8214991A (en)
FR (1) FR2664690B1 (en)
WO (1) WO1992001204A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113798773A (en) * 2021-10-12 2021-12-17 山东海盛海洋工程集团有限公司 Downward welding tool for pipe fittings

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273776A (en) * 1992-12-24 1994-06-29 Crane Electronics Angular motion detector for a torque wrench

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2328954A1 (en) * 1975-10-25 1977-05-20 Plath C DEVICE FOR MEASURING THE TIGHTENING ANGLE ON A SCREW WRENCH
US4091664A (en) * 1975-05-10 1978-05-30 Hazet-Werk Hermann Zerver Tightening wrench with angle indicator
FR2412834A2 (en) * 1977-12-24 1979-07-20 Plath C TIGHTENING FORCE MEASURING DEVICE ON A SCREW WRENCH
DE7910351U1 (en) * 1979-04-09 1983-04-07 Richard Abr. Herder Gmbh & Co, 5650 Solingen SCREW TOOL
DE3832080A1 (en) * 1987-10-02 1989-04-13 Volkswagen Ag Torque wrench with determination of the angle of rotation of the workpiece

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091664A (en) * 1975-05-10 1978-05-30 Hazet-Werk Hermann Zerver Tightening wrench with angle indicator
FR2328954A1 (en) * 1975-10-25 1977-05-20 Plath C DEVICE FOR MEASURING THE TIGHTENING ANGLE ON A SCREW WRENCH
FR2412834A2 (en) * 1977-12-24 1979-07-20 Plath C TIGHTENING FORCE MEASURING DEVICE ON A SCREW WRENCH
DE7910351U1 (en) * 1979-04-09 1983-04-07 Richard Abr. Herder Gmbh & Co, 5650 Solingen SCREW TOOL
DE3832080A1 (en) * 1987-10-02 1989-04-13 Volkswagen Ag Torque wrench with determination of the angle of rotation of the workpiece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113798773A (en) * 2021-10-12 2021-12-17 山东海盛海洋工程集团有限公司 Downward welding tool for pipe fittings
CN113798773B (en) * 2021-10-12 2024-02-06 山东海盛海洋工程集团有限公司 Pipe fitting downward welding tool

Also Published As

Publication number Publication date
FR2664690A1 (en) 1992-01-17
AU8214991A (en) 1992-02-04
FR2664690B1 (en) 1993-11-26

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