WO2003002297A1 - Differential measurement of the deviation between two moving elements - Google Patents

Differential measurement of the deviation between two moving elements Download PDF

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Publication number
WO2003002297A1
WO2003002297A1 PCT/FR2002/002218 FR0202218W WO03002297A1 WO 2003002297 A1 WO2003002297 A1 WO 2003002297A1 FR 0202218 W FR0202218 W FR 0202218W WO 03002297 A1 WO03002297 A1 WO 03002297A1
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WO
WIPO (PCT)
Prior art keywords
sensor
link
flexible
mobiles
transmitter
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Application number
PCT/FR2002/002218
Other languages
French (fr)
Inventor
Jean-Pierre Bazenet
Original Assignee
Jean-Pierre Bazenet
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Application filed by Jean-Pierre Bazenet filed Critical Jean-Pierre Bazenet
Publication of WO2003002297A1 publication Critical patent/WO2003002297A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • G01D5/2451—Incremental encoders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/58—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism a single sliding pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • B23Q17/2233—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the tool relative to the workpiece

Definitions

  • the displacement measurement between 2 mobiles is generally done by equipping one of the mobiles with a sensor for emitting and receiving wave pulses, ultrasound, light or other, the second mobile being provided with a wave reflector.
  • This device finally measures the time to go back and forth between a sensor and reflector, method remaining subject to aging of components used at the limits of their speed of commutation.
  • this reflectometric measurement is only possible if the emitter-reflector always remain aligned, it is impossible when the mobiles move on axes or in different planes or on both sides of a wall which separates them.
  • the aim of the present invention is to avoid these various limitations by using a single sensor and by widening compatibility to most motion sensors, of which it is good to remember that, all of these sensors translate into electrical information the relative displacement of the 2 major elements which compose them:
  • the first element is a reference includes 1 information of displacement, as a measurement scale, a coded disc, a resistive track, a reflector or any other stable reference by construction.
  • the second element is a detector located opposite the reference and which translates the relative displacements between it and the reference into electrical values.
  • the invention uses this type of sensor "h a mechanical motion transmitter forcing one of the mobiles to move the reference and the other mobile to move the detector to provide a differential measurement with a single sensor.
  • This transmitter uses only a flexible link such as strap, cable, chain or the like, maintained in a fixed arrangement of angular references such as pulleys, anti-friction pads or the like. this link being placed in a closed loop between at least 4 angle references.
  • the operating principle is simple, one of the mobiles moves the detector directly relative to the reference of the sensor, the other mobile moves the reference relative to the detector, indirectly via the mobile and flexible link. The arrangement of the references reproduces the same.
  • Fig 1 - Device using 1 linear encoder with flexible rule Fig 2 - Use with a rotary sensor.
  • Fig 3,4,5,6 - Device mounting variants Fig 7 -Variant of an advantageous industrial application.
  • Figure 1 shows the transmitter 6 held between 4 references 5 and part 3 of which is constituted by the flexible scale of a most traditional linear encoder.
  • the first mobile 1 comprises and moves the pulse detector 3 opposite the measurement scale 4.
  • the mobile 1 moves to the right, its detector 3 produces positive displacement information and, moved to the left, it produces negative information- v.
  • the mobile 2 being fixed to the crossed movement loop transmission, it causes the displacement of the measurement scale 4 opposite the detector 3.
  • the same relative movement is produced producing negative information from the detector 3 and the information becomes positive when we move them away from each other.
  • Figure 2 shows the device using a rotary sensor not shown, but using a linear motion converter in rotary motion, by rack and pinion, well known for allowing translation measurements with this type of sensor. (Not shown) .
  • the 1st mobile 1 comprises a rotary sensor driven by the pinion 8, itself meshed in the notches of the belt 7.
  • the pinion rotates in the direction anti-clockwise producing negative information from the driven rotary sensor and vice versa if the mobiles are moved away.
  • the mobile 2 secured to the transmitter 6 approaches the mobile 1, it also drives the pinion 8 counterclockwise producing negative information and vice versa.
  • Figure 3 shows another variant where neither flexible ladder nor toothed belt are integrated in the motion transmitter.
  • the motion sensor could also be associated in parallel or laterally and outside the transmitter without modifying the invention.
  • a rule or a rigid rack could lend itself perfectly to adaptation, as could a flexible rule stretched by a return spring not shown. It can thus be seen that most of the displacement sensors adapt to the device.
  • Figures 4, 5 and 6 show that any other arrangement for returning the flexible link, of size, of different number, or arranged in different planes would in no way modify the principle of the device and between; - in the context of the invention.
  • Particular fii Figure 4 shows an arrangement allowing freely scrolling inside the device, for example some material produced continuously, the 2 mobile being here for example provided with knives, knobs or other in order to regularize the width of said material.
  • Figure 6 shows the presence of a spring always interposed in the transmitter link to ensure a constant tension thereof.
  • This tension adjustment ' could also be outside the link by acting on one of the angle references.
  • This FIG. 6 also represents a variant of references making it possible to protect the largest part of the device at the rear or else under a machine, by letting appear on the front only a part 6 bis of the transmission link to reduce exposure to accidental risks.
  • FIG. 7 represents the device with flexible rule described in FIG. 1, and applied here to a panel cutting table where, the saw door beam 1 and the movable reference stop of . section 2 represent the two mobiles that the user must be able to positionf) ' ' freely.
  • these panels can be very heavy and handled by a single person, it would be difficult to move them for a whole day towards a fixed stop, without counting the damage caused by the translation on the field of the panels which are often covered by a decorative coating or which may be later.
  • the saw holder beam 1 comprises and moves the detector 3 ensuring the differential measurement gap between stop and saw blade avoiding any cutting calculations for the user, reducing fatigue and possible errors.
  • This application of the device can be integrated without modification of the machine because, the movement references 5 can be installed and maintained by clamps of the clamp type, on the other hand, using an arrangement according to FIG. 6, a single part of the transmission link 6b is not exposed at the front of the machine, or sliding in a horizontal gutter which protects it over the entire length of the machine, not shown, the device offers a degree of protection really very high .
  • the detector 3 and the display of the measurement 9 are fixed to the saw holder beam 1 and all the electronic part is assembled on the same rigid element.
  • the flexible rule 4 made of spring quality alloy allows several million passages on its movement references 5 having a sufficient radius of curvature.
  • the device therefore lends itself well to this application of cutting heavy objects such as panels, metal beams, stone blocks, and to many industrial controls such as for example the setting to good width of materials produced continuously.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention relates to a differential measurement of the deviation between two moving elements that move along different axes or in different planes. Said device uses only one movement sensor which is driven directly by one of the moving elements and indirectly by the other moving element which is connected to a mechanical transmitter. Said device can be used to mark positions in numerous industrial applications.

Description

MESURE DIFFERENTIELLE D'ECART ENTRE DEUX MOBILES DIFFERENTIAL MEASUREMENT OF GAP BETWEEN TWO MOBILES
La mesure de déplacement entre 2 mobiles, tels que marqueurs de position, par exemple, se fait généralement en équipant l'un des mobiles d'un capteur à émission et réception d'impulsions d'onde,ultrason, lumière ou autre, le second mobile étant muni d'un réflecteur de l'onde . Ce dispositif mesure finalement le temps d'aller retour d'une onde entre capteur et réflecteur,méthode restant sujette à des vieillissements de composants utilisés aux limites de leur vitesse de coπmutation . D'autre part, cette mesure réflectomètrique n'est possible que si emet- -teur e!réflecteur restent toujours alignés, elle est impossible quand les mobiles se déplacent sur des axes ou dans des plans différents ou des 2 cotés d'une paroi qui les sépare . Elle n'est pas utilisable dans une ambiance polluée par des copeaux, de la sciure, des poussières, des projections de liquide, qui perturberaient la transmission et qui saliraient les surfaces d'émission et de réflection . Une autre méthode permet la mesure d'intervalle entre 2 mobles non alignés, en équipant chacun des mobiles d'un capteur de déplacement autonome et en retirant la mesure d'écart par des moyens différentiels électroniques, ce qui est forcément 2 fois plus coûteux et compliqué. Le but de la présente invention est d'éviter ces différents limitations en utilisant qôun seul capteur et en élargissant la compatibilité à la plupart des capteurs de mouvement,dont il est bon de rappeler que, tous ces capteurs traduisent en information électrique le déplacement relatif des 2 éléments majeurs qui les composent : Le premier élément est une référence comporte 1 information de deplace- -ment, cαrme une échelle de mesure, un disque codé, une piste résistive, un réflecteur ou tout autre référence stable par construction . Le second élément est un détecteur situé en regard de la référence et qui traduit en valeurs électriques les déplacements relatifs entre lui et la référence. L'invention utilisant ce type de capteur «h un transmetteur mécanique de mouvement obligeant l'un des mobiles à déplacer la référence et l'autre mobile à déplacer le détecteur pour fournir une mesure différentielle avec un seul capteur. Ce transmetteur n'utilise qu'un lien souple tel que courroie, cable,chαinette ou autre, maintenu dans un arrange- -ment fixe de renvois d'angles tels que poulies,patins anti-friction ou autres . ce lien étant disposé en boucle fermée entre au moins 4 renvois d'angle . Le principe de fonctionnement est simple, l'un des mobiles déplace directement le détecteur par rapport à la référence du capteur, l'autre mobile déplace la référence par rapport au détecteur, indirectement par l'intermédiaire du lien mobile et souple . L'arrangement des renvois reproduit le même . mouvement relatif et bien adapté du détecteur par rapport à la référence et ainsi le dispositif n'utilise qu'un seul capteur ce que les figures vont expli- -quer plus en détail : Fig 1 - Dispositif utilisant 1 encodeur linéaire à règle souple . Fig 2 - Utilisation avec un capteur rotatif . Fig 3,4,5,6 - Variantes de montage du dispositif . Fig 7 -Variante dune application industrielle avantageuse .The displacement measurement between 2 mobiles, such as position markers, for example, is generally done by equipping one of the mobiles with a sensor for emitting and receiving wave pulses, ultrasound, light or other, the second mobile being provided with a wave reflector. This device finally measures the time to go back and forth between a sensor and reflector, method remaining subject to aging of components used at the limits of their speed of commutation. On the other hand, this reflectometric measurement is only possible if the emitter-reflector always remain aligned, it is impossible when the mobiles move on axes or in different planes or on both sides of a wall which separates them. It cannot be used in an environment polluted by shavings, sawdust, dust, liquid splashes, which would disturb the transmission and which would dirty the emission and reflection surfaces. Another method allows the interval measurement between 2 non-aligned cells, by equipping each of the mobiles with an autonomous displacement sensor and by removing the difference measurement by electronic differential means, which is necessarily 2 times more expensive and complicated. The aim of the present invention is to avoid these various limitations by using a single sensor and by widening compatibility to most motion sensors, of which it is good to remember that, all of these sensors translate into electrical information the relative displacement of the 2 major elements which compose them: The first element is a reference includes 1 information of displacement, as a measurement scale, a coded disc, a resistive track, a reflector or any other stable reference by construction. The second element is a detector located opposite the reference and which translates the relative displacements between it and the reference into electrical values. The invention uses this type of sensor "h a mechanical motion transmitter forcing one of the mobiles to move the reference and the other mobile to move the detector to provide a differential measurement with a single sensor. This transmitter uses only a flexible link such as strap, cable, chain or the like, maintained in a fixed arrangement of angular references such as pulleys, anti-friction pads or the like. this link being placed in a closed loop between at least 4 angle references. The operating principle is simple, one of the mobiles moves the detector directly relative to the reference of the sensor, the other mobile moves the reference relative to the detector, indirectly via the mobile and flexible link. The arrangement of the references reproduces the same. relative and well adapted movement of the detector with respect to the reference and thus the device uses only one sensor, which the figures will explain in more detail: Fig 1 - Device using 1 linear encoder with flexible rule. Fig 2 - Use with a rotary sensor. Fig 3,4,5,6 - Device mounting variants. Fig 7 -Variant of an advantageous industrial application.
La figure 1 montre le transmetteur 6 maintenu entre 4 renvois 5 et dont une partie 3 est constituée par l'échelle souple d'un encodeur linéaire des plus traditionnels .Figure 1 shows the transmitter 6 held between 4 references 5 and part 3 of which is constituted by the flexible scale of a most traditional linear encoder.
Le premier mobile 1 comporte et déplace le détecteur d'impulsions 3 en regard de l'échelle de mesure 4. Quand le mobile 1 se déplace vers la droite son détecteur 3 produit des informations de déplacement posi- -tives et,éplacé à gauche, il produit des informations négatives- v. Le mobile 2 étant fixé à la transmission en boucle à movement croisé, il entraine le déplacement de l'échelle de mesure 4 en regard du détecteur 3. En rapprochant les mobiles 1 et 2 on provoque le même mouvement relatif produisant une information négative du détecteur 3 et l'infor- devient positive quand on les éloigne l'un de l'autre . Complété par un système d'affichage réinitialisé quand les 2 mobiles sont à la même longitude ou lorsqu'ils se touchent, on dispose ainsi d'un dispositif complet de mesure d'écart, n'utilisant qu'un seul capteur donnantune mesure automatiquement différent!elle,permanente et simple à réaliser.The first mobile 1 comprises and moves the pulse detector 3 opposite the measurement scale 4. When the mobile 1 moves to the right, its detector 3 produces positive displacement information and, moved to the left, it produces negative information- v. The mobile 2 being fixed to the crossed movement loop transmission, it causes the displacement of the measurement scale 4 opposite the detector 3. By bringing the mobile 1 and 2 together, the same relative movement is produced producing negative information from the detector 3 and the information becomes positive when we move them away from each other. Complemented by a reset display system when the 2 mobiles are at the same longitude or when they touch, we thus have a complete deviation measurement device, using only one sensor giving an automatically different measurement it, permanent and simple to carry out.
La Figure 2 montre le dispositif utilisant un capteur rotatif non représenté, mais utilisant un convertisseur de mouvement linéaire en mouvement rotatif, par crémaillère et pignon, bien connu pour permet- -tre des mesures de translation avec ce type de capteur .(non représenté).Figure 2 shows the device using a rotary sensor not shown, but using a linear motion converter in rotary motion, by rack and pinion, well known for allowing translation measurements with this type of sensor. (Not shown) .
Par- exemple,le 1er mobile 1 comporte un capteur rotatif entraîné par le pignon 8, lui-même engrené dans les crans de la courroie 7. Quand le mobile 1 se rapproche du mobile 2 le pignon tourne dans le sens anti-horaire produisant une information négative de la part du capteur rotatif entrainé et inversement si on éloigne les mobiles. Quand le mobile 2 solidaire du transmetteur 6 se rapproche du mobile 1, il entraine aussi le pignon 8 dans le sens anti-horaire produisant une information négative et inversement .For example, the 1st mobile 1 comprises a rotary sensor driven by the pinion 8, itself meshed in the notches of the belt 7. When the mobile 1 approaches the mobile 2 the pinion rotates in the direction anti-clockwise producing negative information from the driven rotary sensor and vice versa if the mobiles are moved away. When the mobile 2 secured to the transmitter 6 approaches the mobile 1, it also drives the pinion 8 counterclockwise producing negative information and vice versa.
La même fonction de mesure d'écart réalisée avec le même transmetteur montre bien que le dispositif s'applique aussi à tous les capteurs rotatifs , qu'ils soient numériques ou αroalogiques .The same deviation measurement function performed with the same transmitter clearly shows that the device also applies to all rotary sensors, whether digital or αroalogical.
La figure 3 montre une autre variante où ni échelle souple ni courroie crantée ne sont intégrées dans le transmetteur de mouvement. En effet le capteur.de mouvement pourrait aussi bien être associé parallèlement ou latéralement et en dehors du transmetteur sans modifier l'invention . Une règle ou une crémaillère rigide pourrait se prêter parfaitement à l'adaptation , de même qu'un règle souple tendue par un ressort de rappel non représenté . On voit ainsi que la plupart des capteurs de déplacement s'adaptent au dispositif .Figure 3 shows another variant where neither flexible ladder nor toothed belt are integrated in the motion transmitter. Indeed, the motion sensor could also be associated in parallel or laterally and outside the transmitter without modifying the invention. A rule or a rigid rack could lend itself perfectly to adaptation, as could a flexible rule stretched by a return spring not shown. It can thus be seen that most of the displacement sensors adapt to the device.
Les figures 4, 5 et 6 montrent que tout autre arrangement de renvoi du lien souple, de taille ,de nombre différents ,ou disposés dans des plans différents ne modifieraient en rien le principe du dispositif et entre; - dans le cadre de l'invention .Figures 4, 5 and 6 show that any other arrangement for returning the flexible link, of size, of different number, or arranged in different planes would in no way modify the principle of the device and between; - in the context of the invention.
Fii particulier la figure 4 montre un arrangement laissant librement défiler à l'intérieur du dispositif, par exemple quelque matériau produit en continu , les 2 mobiles étant ici par exemple munis de couteaux, molettes ou autre afin de régulariser la largeur dudit matériau .Particular fii Figure 4 shows an arrangement allowing freely scrolling inside the device, for example some material produced continuously, the 2 mobile being here for example provided with knives, knobs or other in order to regularize the width of said material.
De même la figure 6 montre la présence d'un ressort toujours intercallé dans le lien transmetteur pour assurer une tension constante de celui-ci.Similarly Figure 6 shows the presence of a spring always interposed in the transmitter link to ensure a constant tension thereof.
Ce réglage de tension ' pourrait être aussi à l'extérieur du lien en agissant sur l'un des renvois d'angle. Cette figure 6 représente aussi une variante de renvois permettant de protéger la plus grande partie du dispositif à l'arrière ou bien sous une machine, en ne lais- -sant apparaitre sur le devant qu'une partie 6 bis du lien de transmission pour réduire l'exposition aux risques accidentels .This tension adjustment ' could also be outside the link by acting on one of the angle references. This FIG. 6 also represents a variant of references making it possible to protect the largest part of the device at the rear or else under a machine, by letting appear on the front only a part 6 bis of the transmission link to reduce exposure to accidental risks.
La figure 7 représente le dispositif avec règle souple décrit dans la figure 1, et appliqué ici à une table de coupe des panneaux où, la poutre porte scie 1 et la butée mobile de référence de.coupe 2 représentent les deux mobiles que l'utilisateur doit pouvoir positionf) '' librement. En effet, ces panneaux peuvent être très lourds et manipulés par une seule personne il serait difficile de les déplacer pendant toute une journée vers une butée fixe, sans compter les domnages occasionnées par la translation sur le champ des panneaux qui sont souvent recou- vert par un revêtement décoratif ou qui peuvent l'être ultêrieure- -ment.FIG. 7 represents the device with flexible rule described in FIG. 1, and applied here to a panel cutting table where, the saw door beam 1 and the movable reference stop of . section 2 represent the two mobiles that the user must be able to positionf) '' freely. Indeed, these panels can be very heavy and handled by a single person, it would be difficult to move them for a whole day towards a fixed stop, without counting the damage caused by the translation on the field of the panels which are often covered by a decorative coating or which may be later.
Dans cette application de mesure de coupe, c'est donc bien la butée qui doit être déplacée et qui va entrainer le lien 6b transmettant ainsi son mouvement à la règle 4. La poutre porte scie 1 comporte et déplace le détecteur 3 assurant la mesure différentielle d'écart entre butée et lame de scie évitant tout calculde coupe à l'utilisateur, en réduisant sa fatigue et ses erreurs possibles . Cette application du dispositif peut s'intégrer sans modification de la machine car, les renvois de mouvement 5 peuvent être installés et maintenus par des pinces du type serre-joints, d'autre part, utilisant une disposition selon la figure 6, une seule partie du lien transmet- -teur 6b n'est exposé a l'avant de la machine, ou glissant dans une gouttière horizontale qui le protège sur toute la longueur de le machi- -ine, non représentée , le dispositif offre un degré de protection vraiment très élevé .In this cutting measurement application, it is therefore the stop which must be moved and which will cause the link 6b thus transmitting its movement to the rule 4. The saw holder beam 1 comprises and moves the detector 3 ensuring the differential measurement gap between stop and saw blade avoiding any cutting calculations for the user, reducing fatigue and possible errors. This application of the device can be integrated without modification of the machine because, the movement references 5 can be installed and maintained by clamps of the clamp type, on the other hand, using an arrangement according to FIG. 6, a single part of the transmission link 6b is not exposed at the front of the machine, or sliding in a horizontal gutter which protects it over the entire length of the machine, not shown, the device offers a degree of protection really very high .
Dans cette application, le détecteur 3 et l'affichage de la mesure 9 sont fixés sur la poutre porte scie 1 et toute la partie électronique est réunie sur le même élément rigide. Ainsi on peut déplacer la poutre porte scie 1 sans qu'un seul raccordement électrique soit soumis à quelque effet de pliure, principale raison de rupture de conducteurs dans les autres systèmes à capteur mobile et pour permettre des raccordements courts dcήipeu sensibles aux interférences, durables et rapides à effectuer . La règle souple 4 réalisée en alliage qualité ressort autorise plusieurs millions de passages sur ses renvois de mouvement 5 ayant un rayon de courbure suffisant .In this application, the detector 3 and the display of the measurement 9 are fixed to the saw holder beam 1 and all the electronic part is assembled on the same rigid element. Thus one can move the saw holder beam 1 without a single electrical connection being subjected to some bending effect, the main reason for breaking of conductors in other systems with mobile sensor and to allow short connections dcήipeu sensitive to interference, durable and quick to perform. The flexible rule 4 made of spring quality alloy allows several million passages on its movement references 5 having a sufficient radius of curvature.
Le dispositif se prête donc bien à cette application de coupe d'objets lourds tels que panneaux, poutre métalliques, blocs de pierre, et à de nombreux asservissements industriels tels que par exemple la mise à bonne largeur de matériaux produits en continu . The device therefore lends itself well to this application of cutting heavy objects such as panels, metal beams, stone blocks, and to many industrial controls such as for example the setting to good width of materials produced continuously.

Claims

REVENDICAΉONS REVENDICAΉONS
1) Dispositif pour mesurer la distance entre 2 mobiles adapté aux capteurs de mouvement ayant de référence et un élément détecteur et caractérisé en ce qu'il ne comporte qu'un seul capteur dont un élément est entraîné directement par un mobile, le second élément étant entraîné indirectement par l'autre mobile associé à un transmetteur de mouvement.1) Device for measuring the distance between 2 mobiles adapted to motion sensors having a reference and a detector element and characterized in that it only has one sensor, one element of which is driven directly by a mobile, the second element being indirectly driven by the other mobile associated with a motion transmitter.
2) Dispositif selon revendication 1 caractérisé en ce que le transmetteur mécanique de mouvement est un lien souple mobile maintenu entre au moins 4 renvois d'angle fixes.2) Device according to claim 1 characterized in that the mechanical movement transmitter is a flexible flexible link held between at least 4 fixed bevel gears.
3) Dispositif selon revendications 1 et 2 caractérisé en ce que l'arrangement des renvois d'angle permet au lien souple d'entraîner l'élément du capteur qui lui est attaché pour produire une diminution de la valeur mesurée lorsque les 2 mobiles se rapprochent, et inversement.3) Device according to claims 1 and 2 characterized in that the arrangement of the angle references allows the flexible link to drive the element of the sensor which is attached to it to produce a decrease in the value measured when the 2 mobiles move closer , and vice versa.
4) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce qu'une partie du lien transmetteur est constituée par une règle souple, un câble, une courroie crantée ou non, ou tout autre forme de lien flexible.4) Device according to any one of the preceding claims, characterized in that a part of the transmitter link is constituted by a flexible rule, a cable, a toothed belt or not, or any other form of flexible link.
5) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que le capteur de mouvement n'est pas intégré dans le lien de transmission mais associé en dehors ou latéralement à celui-ci.5) Device according to any one of the preceding claims, characterized in that the motion sensor is not integrated in the transmission link but associated outside or laterally with the latter.
6) Dispositif selon l'une quelconque des revendications précédentes où l'élément détecteur du capteur, les moyens de lecture et de réinitialisation et toutes leurs interconnections sont réunis sur un seul des 2 mobiles.6) Device according to any one of the preceding claims wherein the sensor element of the sensor, the reading and reset means and all their interconnections are combined on one of the 2 mobiles.
7) Dispositif selon l'une quelconque des revendications précédentes où le dispositif maintenu dans un même plan entre plusieurs renvois d'angle, ce plan peut être incliné par rapport à un écran qui en protège les éléments fragiles.7) Device according to any one of the preceding claims wherein the device maintained in the same plane between several bevel gears, this plane can be inclined relative to a screen which protects the fragile elements.
8) Dispositif selon l'une quelconque des revendications précédentes où lorsque seule une partie du lien est apparente, l'autre se trouvant à l'arrière d'une paroi de séparation, la partie apparente est aussi protégée dans une gouttière ou dans un profilé. 8) Device according to any one of the preceding claims where when only one part of the link is visible, the other being at the rear of a partition wall, the visible part is also protected in a gutter or in a profile. .
PCT/FR2002/002218 2001-06-27 2002-06-26 Differential measurement of the deviation between two moving elements WO2003002297A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0108462A FR2826724A1 (en) 2001-06-27 2001-06-27 MOVEMENT MEASUREMENT BETWEEN 2 MOBILES
FR0108462 2001-06-27

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WO2003002297A1 true WO2003002297A1 (en) 2003-01-09

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FR (1) FR2826724A1 (en)
WO (1) WO2003002297A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH376673A (en) * 1956-10-26 1964-04-15 Fries Jan Richard Dipl Ing De Method and device for measuring distances
DE1815828A1 (en) * 1967-12-26 1970-10-29 Ramberg Ingwald Lee Machine tool with a device for maintaining accuracy
FR2649481A1 (en) * 1989-07-04 1991-01-11 Bazenet Pierre Device for measuring linear displacement of an object
US5205049A (en) * 1990-10-05 1993-04-27 Rsf-Elektronik Gesellschaft M.B.H. Length measuring apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH376673A (en) * 1956-10-26 1964-04-15 Fries Jan Richard Dipl Ing De Method and device for measuring distances
DE1815828A1 (en) * 1967-12-26 1970-10-29 Ramberg Ingwald Lee Machine tool with a device for maintaining accuracy
FR2649481A1 (en) * 1989-07-04 1991-01-11 Bazenet Pierre Device for measuring linear displacement of an object
US5205049A (en) * 1990-10-05 1993-04-27 Rsf-Elektronik Gesellschaft M.B.H. Length measuring apparatus

Also Published As

Publication number Publication date
FR2826724A1 (en) 2003-01-03

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