Abrégé

In a method of manufacturing a measuring tube of a fluid measuring device, a tubular semi-finished product having a through-opening extending in a longitudinal direction (L) of the tubular semi-finished product is provided, a circumferential wall of the tubular semi-finished product having at least one waveguide area which, after completion of the measuring tube, forms a waveguide for surface acoustic waves of an acoustic measuring device, and the waveguide area extending along a longitudinal direction (L) of the tubular semi-finished product and from an outer surface to an inner surface of the tubular semi-finished product. The tubular semi-finished product is inserted into a forming tool, and at least one mandrel is inserted into the through-opening, an outer geometry of the mandrel corresponding to an inner geometry of a fluid channel of the measuring tube to be formed from the through-opening. In a forming step in which a pressing force (F) is applied to at least one axial center section of the semi-finished product, at least the center section is plastically deformed, the through-opening being formed into the fluid channel. Finally, the mandrel is removed.

Classes IPC  ?

• B29C 57/06 - Tulipage ou évasement, p. ex. combiné à la formation d'une rainure utilisant des moyens mécaniques élastiquement déformables
• B29L 31/00 - Autres objets particuliers

Abrégé

A modular comb element for a machine for automatically cutting a mat of sheets of material. The cutting machine includes a plurality of cutting supports. The comb element includes a plate forming a support from which a first and a second row of teeth extend longitudinally. The teeth of the first row alternate with the teeth of the second row, and a free end of the teeth of the first row are farther from a downstream edge of the support than a free end of the teeth of the second row of teeth. A ramp is mounted on the downstream edge of the support and inclined with respect to the latter so as to limit the contact surface between the mat of sheets and the comb element. Air injection means are at a downstream edge of the ramp over an entire width thereof.

Classes IPC  ?

• B26D 7/20 - Bancs à couper
• B26D 7/01 - Moyens pour maintenir ou mettre en position la pièce
• B26D 7/06 - Dispositions pour faire avancer ou évacuer les pièces autres que les feuilles, les bandes ou les filaments
• B26D 7/32 - Moyens pour exécuter d'autres opérations en combinaison avec la coupe pour transporter ou empiler le produit coupé

Abrégé

The invention relates to a method for automatically controlling the triggering of the sharpening of the cutting edge of a cutting blade for a cutting machine, involving determining (S02) components of a torsor of the mechanical actions at the point of guidance of the cutting blade in the frame of reference of the blade; determining (S03) a permissible threshold value for a variable established from at least one of the components of the torsor of the mechanical actions and as a function of geometric parameters of the cutting blade and of thickness and material characteristics of the bat that is to be cut; monitoring, during the cutting of the material, variations in amplitude of the variable selected for determining the threshold value; and automatically triggering (S07) an alert to call for a cycle of sharpening the cutting edge of the cutting blade as soon the amplitude of the variable selected for determining the value of the threshold reaches said threshold value.

Classes IPC  ?

• G05B 19/4065 - Contrôle du bris, de la vie ou de l'état d'un outil

Abrégé

The invention relates to a method for determining components of a mechanical action torsor at the guiding point of a cutting blade (L) for a cutting machine, the blade being guided in a presser foot (P) of a cutting head of the machine, the method comprising the positioning of a five-component dynamometer on the presser foot, the dynamometer comprising a plurality of sensors for determining a frontal force, a lateral force, a rolling moment, a pitching moment and a yawing moment of the cutting blade, the establishment of a calibration matrix of the dynamometer, and the determination of the forces in three dimensions to which the cutting blade is subjected, on the basis of the measurements obtained by the sensors and the calibration matrix.

Classes IPC  ?

• B26F 1/38 - DécoupageDécoupage à l'emporte-pièce
• B26D 5/00 - Dispositions pour manœuvrer et commander les machines ou les dispositifs de coupe, découpage, poinçonnage, perforation ou séparation autrement que par coupe

Abrégé

A modular cutting-support element with suction in a machine for automatic cutting of sheet material by means of blades, includes a plurality of bristles arranged in the same single line, at least some of the bristles each having a base rigidly connected to a bearing plate intended to be mounted on a support, a head opposite the base on which a sheet material to be cut is intended to rest, and a stem connecting the head to the base, the largest cross-section of which is strictly included in the largest cross-section of the head, the bearing plate comprising, on each of its side surfaces, a plurality of transverse channels for the passage of suction air providing communication between an upper surface of the bearing plate from which the bristles extend and an inner surface opposite the upper surface.

Classes IPC  ?

• B26D 7/01 - Moyens pour maintenir ou mettre en position la pièce
• B26D 7/06 - Dispositions pour faire avancer ou évacuer les pièces autres que les feuilles, les bandes ou les filaments
• B26D 7/20 - Bancs à couper
• B65G 15/42 - Courroies ou porte-charges sans fin analogues en caoutchouc ou en matière plastique avec nervures, stries ou autres saillies superficielles
• B65G 15/58 - Courroies ou porte-charges sans fin analogues avec moyens pour tenir ou retenir les charges dans la position fixée, p. ex. magnétiques

Abrégé

The invention relates to a modular comb element (10) for a machine (2) for automatic cutting of a mat of sheets of material, the cutting machine comprising a plurality of cutting support members (4) each having a plurality of bristles (6) on which the mat (M) rests, the comb element comprising a plate forming a support member (12) from which a first and a second row of teeth extend longitudinally, the teeth (14) in the first row alternating with the teeth (16) in the second row, and a free end of the teeth in the first row being further away from an upstream edge of the support member than a free end of the teeth in the second row of teeth, a ramp (18) mounted on the upstream edge of the support member and inclined relative to the latter so as to limit the contact surface between the mat of sheets and the comb element, and means for applying air to an upstream edge of the ramp across the entire width of the latter in order to facilitate unloading/loading of the mat of sheets.

Classes IPC  ?

• B26D 7/06 - Dispositions pour faire avancer ou évacuer les pièces autres que les feuilles, les bandes ou les filaments
• B26D 7/20 - Bancs à couper
• B26D 7/32 - Moyens pour exécuter d'autres opérations en combinaison avec la coupe pour transporter ou empiler le produit coupé

Abrégé

The invention relates to a method for determining components of a mechanical action torsor at the guiding point of a cutting blade (L) for a cutting machine, the blade being guided in a presser foot (P) of a cutting head of the machine, the method comprising the positioning of a five-component dynamometer on the presser foot, the dynamometer comprising a plurality of sensors for determining a frontal force, a lateral force, a rolling moment, a pitching moment and a yawing moment of the cutting blade, the establishment of a calibration matrix of the dynamometer, and the determination of the forces in three dimensions to which the cutting blade is subjected, on the basis of the measurements obtained by the sensors and the calibration matrix.

Classes IPC  ?

• B26D 5/00 - Dispositions pour manœuvrer et commander les machines ou les dispositifs de coupe, découpage, poinçonnage, perforation ou séparation autrement que par coupe
• B26F 1/38 - DécoupageDécoupage à l'emporte-pièce

Abrégé

Modular support element for aspirated cutting in a machine for automatic cutting of sheet material The invention relates to a modular support element (4) for aspirated cutting in a machine for automatic cutting of sheet material by means of blades, comprising a plurality of bristles (6) arranged in the same single line, at least some of the bristles each having a base (8) rigidly connected to a bearing plate (10) intended to be mounted on a stand, a head (12) opposite the base on which a sheet material to be cut is intended to rest, and a rod (9) connecting the head to the base, the largest cross-section of which is strictly included in the largest cross-section of the head, the bearing plate comprising, on each of its side surfaces, a plurality of transverse channels (18) for the passage of aspirated air providing communication between an upper surface of the bearing plate from which the bristles extend and an inner surface opposite the upper surface.

Classes IPC  ?

• B26D 7/01 - Moyens pour maintenir ou mettre en position la pièce
• B26D 7/06 - Dispositions pour faire avancer ou évacuer les pièces autres que les feuilles, les bandes ou les filaments
• B26D 7/20 - Bancs à couper

Abrégé

Machining tool comprising a frame in which a drive shaft for a tool is mounted so as to pivot about a rotation axis and to move axially along the rotation axis. The shaft is connected to two rotary motors, namely a first motor connected to a member for meshing with a fluted portion of the shaft in order to drive the shaft in rotation and a second motor connected to a nut engaged with a threaded portion of the shaft in order to move the shaft axially. The motors are connected to at least one control unit designed to control the motors independently of one another, and the first motor and the second motor are coaxial with one another.

Classes IPC  ?

• B23Q 15/013 - Commande ou régulation du mouvement d'avance
• B23Q 5/32 - Avance des broches de travail
• F16H 25/20 - Mécanismes à vis
• H02K 7/06 - Moyens de transformation d'un mouvement alternatif en un mouvement circulaire ou vice versa
• B23Q 5/40 - Avance par transmission mécanique des autres organes supportant les outils ou les pièces, p. ex. avance des traînards, des glissières d'outils à avance continue par un arbre, p. ex. une vis-mère
• B23B 39/00 - Machines ou dispositifs d'utilisation générale, pour l'alésage ou le perçageEnsemble machines à aléser ou à percer
• B23Q 5/10 - Entraînement des principaux organes de travail des arbres rotatifs, p. ex. des broches de travail entraînés principalement par des moyens électriques
• B23Q 5/28 - Transmissions électriques
• B23Q 15/007 - Commande automatique ou régulation du mouvement d'avance, de la vitesse de coupe ou de la position tant de l'outil que de la pièce pendant l'action de l'outil sur la pièce
• B23Q 15/08 - Commande ou régulation de la vitesse de coupe
• G05B 19/18 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique
• H02K 7/14 - Association structurelle à des charges mécaniques, p. ex. à des machines-outils portatives ou des ventilateurs

Abrégé

A piezoelectric actuator control device comprising a first voltage converter supplying a DC voltage on a DC power supply bus to which is connected a second voltage converter capable of generating a variable excitation voltage under the control of a control computer, the second voltage converter comprising two switch half-bridges mounted in parallel with the terminals of a bus capacitor, the control computer being suitable for controlling the two switch half-bridges according to a first control configuration, in which they are controlled independently in order to each supply a voltage in a range between zero and a maximum positive value and according to a second control configuration, in which they are jointly controlled as a full-bridge for supplying a voltage between a minimum negative value and said maximum positive value.

Classes IPC  ?

• H01L 41/04 - DISPOSITIFS À SEMI-CONDUCTEURS; DISPOSITIFS ÉLECTRIQUES À L'ÉTAT SOLIDE NON PRÉVUS AILLEURS - Détails - Détails d'éléments piézo-électriques ou électrostrictifs
• H02N 2/08 - Machines électriques en général utilisant l'effet piézo-électrique, l'électrostriction ou la magnétostriction produisant un mouvement linéaire, p. ex. actionneursPositionneurs linéaires utilisant des ondes progressives, p. ex. moteurs linéaires
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• H02M 11/00 - Systèmes de transformation de puissance électrique non couverts par les autres groupes de la présente sous-classe
• H02N 2/06 - Circuits d'entraînementDispositions pour la commande

Abrégé

Some embodiments are directed to an analysis device for board sports, intended to be secured to a board, such as a surfboard or ski, at the interface with the user. The device includes: a force sensor designed to capture one or more forces generated by the user on the board; a position and motion sensor designed to capture the position, speed and acceleration of the board in space; and a processing unit or processor connected to the force sensor and to the position and motion sensor and designed to synchronize and process the data from the sensors.

Classes IPC  ?

• A63F 9/24 - Jeux utilisant des circuits électroniques, non prévus ailleurs
• A63B 69/00 - Appareils d'entraînement ou appareils destinés à des sports particuliers
• A63F 13/807 - Glisse sur des surfaces, p. ex. avec des skis, des patins ou des planches
• A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
• B63B 32/00 - Planches de sports nautiquesAccessoires à cet effet
• B63B 32/70 - Accessoires non spécialement adaptés à un type particulier de planche, p. ex. couches amortissantes ou éléments de flottabilité
• A63B 24/00 - Commandes électriques ou électroniques pour les appareils d'exercice des groupes
• A63B 71/06 - Dispositifs indicateurs ou de marque pour jeux ou joueurs
• A63C 5/06 - Skis ou surfs des neiges comprenant sur leur dessus des dispositifs spéciaux, p. ex. un guidon
• A63C 11/00 - Accessoires pour pratiquer le ski ou le surf des neiges
• A61B 5/11 - Mesure du mouvement du corps entier ou de parties de celui-ci, p. ex. tremblement de la tête ou des mains ou mobilité d'un membre

Abrégé

The invention concerns a piezoelectric actuator control device comprising a first voltage converter (20) supplying a DC voltage on a DC power supply bus (40) to which is connected a second voltage converter (10) capable of generating a variable excitation voltage under the control of a control computer (50), said second voltage converter comprising two switch half-bridges (11, 12) mounted in parallel with the terminals of a bus capacitor (Cdc), the control computer being suitable for controlling the two switch half-bridges according to a first control configuration, in which they are controlled independently in order to each supply a voltage in a range between zero and a maximum positive value (Umax) and according to a second control configuration, in which they are jointly controlled as a full-bridge for supplying a voltage between a minimum negative value and said maximum positive value.

Classes IPC  ?

• H02N 2/06 - Circuits d'entraînementDispositions pour la commande
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• H02M 11/00 - Systèmes de transformation de puissance électrique non couverts par les autres groupes de la présente sous-classe

Abrégé

A method of estimating the distribution of bone mineral density in at least one portion of a person's skeleton. The method includes generating a geometrical representation of the portion of the skeleton; a geometrical representation in three dimensions of at least one portion of the outline of the person; and first and second X-ray images; and using software to estimate: a value for the thickness of soft tissue through which the given X-ray has passed; an attenuation coefficient of the soft tissues that have been passed through; a value for the thickness of bone tissue through which the given X-ray has passed; and using the thickness value for the soft tissue through which the given X-ray has passed, and a value for the attenuation of the given X-ray due to the thickness of the bone tissue through which it has passed, the software estimates a value representative of the bone mineral density of the bone tissues through which the given X-ray has passed.

Classes IPC  ?

• A61B 6/02 - Agencements pour établir un diagnostic dans des plans différents successifsDiagnostic stéréoscopique utilisant des radiations
• A61B 6/00 - Appareils ou dispositifs pour le diagnostic par radiationsAppareils ou dispositifs pour le diagnostic par radiations combinés avec un équipement de thérapie par radiations

Abrégé

The invention mainly relates to a polar wheel (18) for an inductor of a rotating electrical machine, characterised in that it is made from a metal-containing material having a substantially fibre-free microstructure.

Classes IPC  ?

• H02K 1/22 - Parties tournantes du circuit magnétique
• H02K 1/02 - Détails du circuit magnétique caractérisés par le matériau magnétique
• H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques

Abrégé

The invention relates to a heat exchanger comprising at least one duct (16) making it possible to channel a flow (18) of fluid and a plurality of elements (20) containing at least one phase change material arranged in said duct (16), characterised in that at least some of said elements (20) containing at least one phase change material can move freely in the flow (18) of fluid. Preferably, the heat exchanger comprises an adjustment system for adjusting the positioning of the elements (20) containing at least one phase change material in the duct (16).

Classes IPC  ?

• F24F 5/00 - Systèmes ou appareils de conditionnement d'air non couverts par ou
• F28D 19/04 - Appareils échangeurs de chaleur de régénération dans lesquels l'agent ou la masse intermédiaire de transfert de chaleur est amené successivement en contact avec chacune des sources de potentiel calorifique utilisant des masses rigides, p. ex. montées sur un support mobile
• F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente

Abrégé

A machining device including a framework, a transmission shaft and a drive mechanism including a rotation member for driving the shaft in rotation about its axis, a drive member in helical connection with the shaft to drive the translation thereof along its axis with a feed movement, according to the relative rotational speed of the rotation and drive members. The drive member is mounted with the ability to effect translational movement with respect to the framework along the axis and is positioned between the rotation member and an end for coupling of the shaft to a cutting tool, while an electromechanical actuator is mounted in a fixed frame of reference associated with the framework in front of the drive member to which it can be coupled in order to cause it to oscillate translationally so as to superpose an axial oscillation component with the feed movement.

Classes IPC  ?

• B23Q 1/34 - Déplacement relatif obtenu par utilisation d'organes déformables, p. ex. d'organes piézo-électriques, magnétostrictifs, élastiques ou dilatables thermiquement
• B23B 47/34 - Agencements pour enlever les copeaux des trous pendant le perçageAgencements fixés à l'outil pour briser les copeaux
• B23Q 5/32 - Avance des broches de travail
• B23Q 5/40 - Avance par transmission mécanique des autres organes supportant les outils ou les pièces, p. ex. avance des traînards, des glissières d'outils à avance continue par un arbre, p. ex. une vis-mère

Abrégé

The invention relates to a real-time teaching aid device (1) for a board sport, such as surfing, intended for a person engaging in such a sport. Said teaching aid device comprises: • - a set of sensors (5) capable of measuring the position, the speeds, and the accelerations of a surf board (3) in a Cartesian coordinate system associated with the board; said set of sensors being connected to • - a measured data processing unit (7) for determining a deterministic dynamic behaviour model of the surf board; • - at least one signalling means (9) for providing, in real-time, information relating to the deterministic dynamic behaviour model of the board to the person engaging in such a sport and/or to a third party. The invention also relates to a surf board having such a device.

Classes IPC  ?

• A63B 69/00 - Appareils d'entraînement ou appareils destinés à des sports particuliers
• A63B 71/06 - Dispositifs indicateurs ou de marque pour jeux ou joueurs
• B63B 35/79 - Planches de glisse, p.ex. planches à voile 

Abrégé

Machining tool comprising a frame in which a drive shaft for a tool is mounted so as to pivot about a rotation axis and to move axially along the rotation axis. The shaft is connected to two rotary motors, namely a first motor connected to a member for meshing with a fluted portion of the shaft in order to drive the shaft in rotation and a second motor connected to a nut engaged with a threaded portion of the shaft in order to move the shaft axially. The motors are connected to at least one control unit designed to control the motors independently of one another, and the first motor and the second motor are coaxial with one another.

Classes IPC  ?

• B23B 39/00 - Machines ou dispositifs d'utilisation générale, pour l'alésage ou le perçageEnsemble machines à aléser ou à percer
• B23Q 15/013 - Commande ou régulation du mouvement d'avance
• G05B 19/18 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique
• B23Q 5/32 - Avance des broches de travail
• F16H 25/20 - Mécanismes à vis
• H02K 7/06 - Moyens de transformation d'un mouvement alternatif en un mouvement circulaire ou vice versa
• B23Q 5/40 - Avance par transmission mécanique des autres organes supportant les outils ou les pièces, p. ex. avance des traînards, des glissières d'outils à avance continue par un arbre, p. ex. une vis-mère
• B23Q 5/10 - Entraînement des principaux organes de travail des arbres rotatifs, p. ex. des broches de travail entraînés principalement par des moyens électriques
• B23Q 5/28 - Transmissions électriques
• B23Q 15/007 - Commande automatique ou régulation du mouvement d'avance, de la vitesse de coupe ou de la position tant de l'outil que de la pièce pendant l'action de l'outil sur la pièce
• B23Q 15/08 - Commande ou régulation de la vitesse de coupe
• H02K 7/14 - Association structurelle à des charges mécaniques, p. ex. à des machines-outils portatives ou des ventilateurs

Abrégé

The invention relates to an analysis device for board sports, intended to be secured to a board (1), such as a surfboard or ski, at the interface with the user. The device comprises: a force sensor (3) designed to capture one or more forces generated by the user on the board; a position and motion sensor (5) designed to capture the position, speed and acceleration of the board in space; and a processing unit (7) connected to the force sensor and to the position and motion sensor and designed to synchronise and process the data from the sensors.

Classes IPC  ?

• A63F 13/807 - Glisse sur des surfaces, p. ex. avec des skis, des patins ou des planches
• B63B 35/79 - Planches de glisse, p.ex. planches à voile 
• A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus

Abrégé

The invention relates to a method for generating a three-dimensional virtual model of at least one portion of a person's skeleton, characterised in that an imaging device (1) is used to observe the person (Ind): a plurality of parameters are generated which are extrinsic to the person's skeleton and represent the geometry of an outer shell (E); and radiological images are generated which show said at least one portion of the person's skeleton; and by means of said extrinsic parameters, areas of interest to be observed are determined in the radiological images, these areas of interest are then searched for characteristic points of bones of the skeleton in order to deduce therefrom the relative positions of these bones in a spatial frame of reference and thus to generate said three-dimensional virtual model of said portion of the person's skeleton.

Classes IPC  ?

• G06T 7/00 - Analyse d'image
• G06T 7/60 - Analyse des attributs géométriques
• G06T 17/00 - Modélisation tridimensionnelle [3D] pour infographie

Abrégé

The invention relates to a method for estimating the distribution of bone mineral density in at least one portion of a person's skeleton. Said method includes generating: a geometric representation of the portion of the skeleton, a three-dimensional geometric representation of at least one portion of the outer envelope of the person, and first and second radiological images; and software is used to estimate: a value of the thickness of the soft tissue through which said given X-ray passed; an attenuation coefficient of the soft tissue through which said X-ray passed; a value of the thickness of the bone tissue through which said given X-ray passed; and using the value of the thickness of the bone tissue through which said given X-ray passed, and a value of the attenuation of said given X-ray by the thickness of the bone tissue through which it passed, the software estimates a value representing the bone mineral density of the bone tissue through which said given X-ray passed.

Classes IPC  ?

• A61B 6/02 - Agencements pour établir un diagnostic dans des plans différents successifsDiagnostic stéréoscopique utilisant des radiations
• A61B 6/00 - Appareils ou dispositifs pour le diagnostic par radiationsAppareils ou dispositifs pour le diagnostic par radiations combinés avec un équipement de thérapie par radiations

Abrégé

A machining device including a casing, a transmission shaft (3) and a drive mechanism (1) including a first gearing member (13) that is able to rotate the shaft about its axis (A), a second gearing member (17) that is in a helicoidal connection with the shaft in order to drive the shaft translationally along its axis in a feed movement, depending on the relative rotational speed of the first and second gearing members, and means for generating axial oscillations. The second gearing member (17) is able to move translationally along the axis (A) with respect to the casing, the means for generating axial oscillations including an electromechanical actuator (20) mounted at a fixed location, connected to the casing, and able to be coupled axially to the second gearing member (17) in order to make it oscillate translationally, so as to superimpose an axial oscillation component on said feed movement.

Classes IPC  ?

• H01L 41/08 - Eléments piézo-électriques ou électrostrictifs
• B23B 37/00 - Alésage utilisant des vibrations de fréquence ultrasonore
• B23B 47/34 - Agencements pour enlever les copeaux des trous pendant le perçageAgencements fixés à l'outil pour briser les copeaux
• B23Q 5/32 - Avance des broches de travail
• B23Q 5/40 - Avance par transmission mécanique des autres organes supportant les outils ou les pièces, p. ex. avance des traînards, des glissières d'outils à avance continue par un arbre, p. ex. une vis-mère

Abrégé

The invention relates to a machining device comprising a framework, a transmission shaft (3) and a drive mechanism (1) comprising a rotation member (13) for driving said shaft in rotation about its axis (A), a drive member (18) in helical connection with the shaft to drive the translation thereof along its axis with a feed movement, according to the relative rotational speed of said rotation and drive members. The drive member is mounted with the ability to effect translational movement with respect to said framework along the axis (A) and is positioned between said rotation member and an end for coupling of said shaft to a cutting tool, while an electromechanical actuator (20) is mounted in a fixed frame of reference associated with said framework in front of said drive member (18) to which it can be coupled in order to cause it to oscillate translationally so as to superpose an axial oscillation component with said feed movement.

Classes IPC  ?

• B23Q 1/34 - Déplacement relatif obtenu par utilisation d'organes déformables, p. ex. d'organes piézo-électriques, magnétostrictifs, élastiques ou dilatables thermiquement
• B23B 47/34 - Agencements pour enlever les copeaux des trous pendant le perçageAgencements fixés à l'outil pour briser les copeaux
• B23Q 5/32 - Avance des broches de travail
• B23Q 5/40 - Avance par transmission mécanique des autres organes supportant les outils ou les pièces, p. ex. avance des traînards, des glissières d'outils à avance continue par un arbre, p. ex. une vis-mère

Abrégé

Machining tool comprising a frame in which a drive shaft for a tool is mounted so as to pivot about a rotation axis and to move axially along the rotation axis. The shaft is connected to two rotary motors, namely a first motor connected to a member for meshing with a fluted portion of the shaft in order to drive the shaft in rotation and a second motor connected to a nut engaged with a threaded portion of the shaft in order to move the shaft axially. The motors are connected to at least one control unit designed to control the motors independently of one another, and the first motor and the second motor are coaxial with one another.

Classes IPC  ?

• B23Q 5/32 - Avance des broches de travail
• F16H 25/20 - Mécanismes à vis
• H02K 7/06 - Moyens de transformation d'un mouvement alternatif en un mouvement circulaire ou vice versa
• B23B 35/00 - Méthodes d'alésage ou de perçage ou autres méthodes de travail impliquant l'utilisation de machines à aléser ou à percerUtilisation d'équipements auxiliaires en relation avec ces méthodes

Abrégé

A method of producing a finite-element model of a unique body of complex shape having an outer surface that is known in the form of a cloud of points describing said surface analytically or algebraically in a determined frame of reference, the method comprising the steps of a) using a parameterizable and generic finite-element model made up of simple geometrical volumes and representative of the family to which the unique body belongs, b) adapting said model as a function of parameters describing the unique body that is to be modeled; c) in said frame of reference, adjusting the parameterized generic finite-element model and causing the surface nodes of said parameterized model to correspond to points of the known outer surface of the body by projecting said nodes onto said surface along a direction that is normal to the surface of the generic model, and d) using the nodes of the surface as control points for a three-dimensional interpolation method in order to personalize the internal finite elements of the generic model.

Classes IPC  ?

• G06G 7/48 - Calculateurs analogiques pour des procédés, des systèmes ou des dispositifs spécifiques, p. ex. simulateurs