WO1995016893A1 - Contact-free dimensional control device for mechanical parts and other objects - Google Patents
Contact-free dimensional control device for mechanical parts and other objects Download PDFInfo
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- WO1995016893A1 WO1995016893A1 PCT/FR1993/001235 FR9301235W WO9516893A1 WO 1995016893 A1 WO1995016893 A1 WO 1995016893A1 FR 9301235 W FR9301235 W FR 9301235W WO 9516893 A1 WO9516893 A1 WO 9516893A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
- G01B15/02—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring thickness
- G01B15/025—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring thickness by measuring absorption
Definitions
- Non-contact dimensional control device for mechanical parts and other objects
- the present invention relates to a non-contact dimensional control device for mechanical parts and other miscellaneous objects, allowing the automatic measurement of their external and internal dimensions and their comparison with a "standard" element.
- This device is particularly intended for industrial measurement applications integrating into a manufacturing process, control and / or packaging of parts or objects, requiring precision, speed, adaptability and / or performance under the conditions of acquisition of their dimensions. .
- the measurement of the dimensions of a mechanical part is traditionally carried out by more or less sophisticated mechanical, optical or electronic devices (comparators, calipers, electronic or optical laser sensors, etc.), working on parts. to control which are fixed or on the contrary animated by a scrolling movement, this latter possibility applying in particular to dimensional control without contact of identical parts produced in series.
- the existing dimensional control devices are, in all cases, attached to the measurement of a dimension (for example length or diameter) or of a set of dimensions in the case of assemblies carrying out simultaneous measurements, but they never allow to capture a complete dimensional image, associating external dimensions and also internal dimensions this in particular for hollow parts or more or less complex shapes.
- the present invention aims to avoid these drawbacks by providing a device which, without multiple manipulations and in an automatic manner, makes it possible to simultaneously determine the external and internal dimensions, for mechanical parts and other objects of all shapes.
- the subject of the invention is essentially a non-contact dimensional control device for mechanical parts and other objects, which comprises in combination:
- an opto-electronic measurement module comprising an X-ray source and an opto-electronic sensor, the area between the source and the sensor being able to receive the part or the object to be checked, this measurement area being made accessible by a tunnel opening towards the outside,
- a central computer unit associated with the measurement module, ensuring the control of the commands of the device, the memorization of the measurement results and possibly their processing with a view to their exploitation,
- control desk for an operator, equipped with a screen and a keyboard, for entering the measurement parameters and for viewing the results obtained.
- the opto-electronic X-ray measurement module gives, without any contact, an image of the external and internal forms of the part or object to be checked, according to a plane in section parallel to a measurement surface on which this part or this object is placed.
- the part or object to be checked can be introduced manually into the tunnel giving access to the measurement area, or preferably automatically, by being moved by a transfer means which introduces it at one end of the tunnel and makes it stand out at the other end of this tunnel, passing it through the area which has,. for example, an initial useful area of the order of 100 cm 2 .
- the central computer unit manages the opto-electronic measurement module, as well as the general control of the device. More particularly, this central unit ensures the logical sequencing of the steps of the measurement, the storage of the collected image, the interface with respect to the external links used and the final processing of the data with respect to parameters and data. of reference pre-recorded.
- the reference data which correspond to the "standard” element to which the parts or objects to be checked must be compared, can be entered into memory according to various processes: - direct reading by the measurement module, on a part or an object " standard "available, dimensions to be checked,
- control desk advantageously equipped with a graphic console which allows the user to compare the collected and analyzed images. by the device.
- Various optional equipment can be connected to this device, via interfaces, in particular for connecting the device to an external installation for manufacturing, checking and / or packaging the parts or objects measured.
- the nature of the parts or objects to be checked must be compatible with the measurement technique by X-rays, that is to say that the parts or objects in question must be permeable to X-rays, while partially absorbing them according to the thickness of material traversed by these rays, and the dimensions of the parts or objects to be checked must also be compatible with the useful surface of the measurement area.
- Figure 1 is a general flow diagram of a device according to the present invention
- Figure 2 shows, very schematically, the principle of the opto-electronic measurement module, forming part of the device according to the invention
- Figure 3 shows the image of a mechanical part, obtained with this device
- Figure 4 illustrates the integration of a device according to the invention in a control chain, behind a digital bar turning machine.
- the dimensional control device intended in particular for non-contact measurement of mechanical parts comprising external and internal characteristic dimensions such as that shown in 1, comprises an opto-electronic measurement module 2 indicated diagrammatically in FIG. 1, and shown more precisely in FIG. 2.
- the opto-electronic measurement module 2 comprises an X-ray source 3, an optical system 4 and an opto-electronic sensor 5.
- This opto-electronic module 2 is arranged transversely, on a tunnel 6 accessible by its two ends (see also Figure 4), the assembly forming a streamlined apparatus.
- the part to be checked 1 traverses the tunnel 6, and it is measured during its passage between the X-ray source 3 and the opto-electronic sensor 5.
- the tunnel 6 and the module 2 define for example an opto-electronic measurement zone A with an initial useful surface of 100 mm ⁇ 100 mm.
- the opto-electronic measurement module 2 gives, without any contact, an image of the external and internal shapes of the part 1, according to a plane in section parallel to the measurement surface on which this part 1 is placed, and in function the position of said part on the measurement surface. A contrasting image of the external and internal profiled shapes of the part is thus obtained, an image which can be stored electronically and which appears, for example, as illustrated in FIG. 3.
- the opto-electronic measurement module 2 is associated a central computer unit 7 ensuring control of commands, memorization of measurement points and processing of the measurement with a view to its exploitation.
- the central unit 7 is itself associated, via interfaces 8 and 9, with data files and memories symbolized at 10, and with a control desk 11 intended for an operator and equipped with a graphic console with screen 12 and keyboard 13.
- the central computer unit 7 will carry out the processing of the data collected, that is to say the comparison with a "standard” element and establishment of a statement of dimensional deviations from the "standard” element.
- the “standard” element is introduced beforehand into the data memory 10 of the device, several channels being usable for the introduction of this “standard” element: a) either the direct dimensional analysis of a “standard” part, on the device itself, with rating of its characteristic exterior and / or interior dimensions by means of the user console (screen 12 and keyboard 13 of the control desk 11); b) or the digitization of a plan (drawing) of the part, by standard equipment 14 connected to the control desk 11; c) or by the transfer of a digital drawing file in plan, in two dimensions, in a standard format to be defined by the computer link available at the control desk 11.
- channels b) and c) for entering data relating to the "standard" element it is necessary, from the user console, to redefine the dimensioned dimensions of the digitized plan or of the transferred drawing.
- the central computer unit 7 having established the dimensional differences between the dimensions measured and those relating to the "standard” element, these differences can be used to control, through the interface 9, a process associated external to the device, process implemented for example by an automaton 15.
- the average measurement cycle of a mechanical part 1, comprising opto-electronic analysis and computerized data processing, can be carried out in a time not exceeding 2 seconds, which will allow, in industrial applications of the device , the control of series of parts at a high rate, adapting to a manufacturing process, control and / or packaging of parts.
- the precision obtained in point, on the image analysis can be 5 ⁇ m or better.
- FIG. 4 shows the device described above, integrated into a parts control chain 1 located behind a digital bar turning machine 16, the numerical control of which is indicated at 17.
- the mechanical parts 1 machined on the machine 16 reach an endless conveyor 18 which successively introduces them into the tunnel 6 and makes them travel along arrow F through this tunnel 6, where each part is analyzed as it passes through the measurement area A.
- An integrated manual design device is thus produced for control - reception and industrial control in general, applicable to the achievement of quality objectives.
Abstract
The invention relates to a device for the complete dimensional imaging, externally and internally, of parts, without any contact with those parts, and to compare the image with a standard element which is automatically known. The device is comprised of an optoelectronic machine (1) arranged in a casing and presenting an acces tunnel (3) for accessing a measuring area (2) having a surface area of 100 mm x 100 mm. A computerized management unit (4) is connected to the device and provides for the automatic measurement and processing of the image obtained. A control desk (5) provided with a graphic console (6) enables the user to take the parameters of the measurements and to visualize the results obtained. The device according to the invention is particularly adapted to industrial measurement applications requiring particular implementation and operation conditions.
Description
"Dispositif de contrôle dimensionnel sans contact pour pièces mécaniques et autres objets" "Non-contact dimensional control device for mechanical parts and other objects"
La présente invention concerne un dispositif de contrôle dimensionnel sans contact, pour pièces mécaniques et autres objets divers, permettant la mesure automatique de leurs cotes extérieures et intérieures et leur comparaison avec un élément "étalon". Ce dispositif est particulièrement destiné aux applications industrielles de mesure s' intégrant dans un processus de fabrication, contrôle et/ou conditionnement de pièces ou d'objets, nécessitant précision, rapidité, adaptabilité et/ou performance dans les conditions d'acquisition de leurs dimensions.The present invention relates to a non-contact dimensional control device for mechanical parts and other miscellaneous objects, allowing the automatic measurement of their external and internal dimensions and their comparison with a "standard" element. This device is particularly intended for industrial measurement applications integrating into a manufacturing process, control and / or packaging of parts or objects, requiring precision, speed, adaptability and / or performance under the conditions of acquisition of their dimensions. .
La mesure des dimensions d'une pièce mécanique est traditionnellement effectuée au moyen d'appareillages mécaniques, optiques ou électroniques plus ou moins sophistiqués (comparateurs, pieds à coulisse, capteurs électroniques ou optiques à laser, etc...) , intervenant sur des pièces à contrôler qui sont fixes ou au contraire animées d'un mouvement de défilement, cette dernière possibilité s'appliquant notamment au contrôle dimensionnel sans contact de pièces identiques fabriquées en série. Les dispositifs de contrôle dimensionnel existants sont, dans tous les cas, attachés à la mesure d'une cote (par exemple longueur ou diamètre) ou d'un ensemble de cotes dans le cas de montages réalisant des mesures simultanées, mais ils ne permettent jamais de saisir une image dimensionnelle complète, associant des cotes extérieures et aussi des cotes intérieures ceci notamment pour des pièces creuses ou de formes plus ou moins complexes. Dans le cas de telles pièces, - la détermination des cotes aussi bien extérieures qu'intérieures oblige à des manipulations multiples et/ou à l'utilisation de moyens variés et coûteux, liés aux formes mêmes des pièces à contrôler.
La présente invention vise à éviter ces inconvénients, en fournissant un dispositif qui, sans manipulations multiples et d'une manière automatique, permet de déterminer simultanément les dimensions extérieures et intérieures, pour des pièces mécaniques et autres objets de toutes formes.The measurement of the dimensions of a mechanical part is traditionally carried out by more or less sophisticated mechanical, optical or electronic devices (comparators, calipers, electronic or optical laser sensors, etc.), working on parts. to control which are fixed or on the contrary animated by a scrolling movement, this latter possibility applying in particular to dimensional control without contact of identical parts produced in series. The existing dimensional control devices are, in all cases, attached to the measurement of a dimension (for example length or diameter) or of a set of dimensions in the case of assemblies carrying out simultaneous measurements, but they never allow to capture a complete dimensional image, associating external dimensions and also internal dimensions this in particular for hollow parts or more or less complex shapes. In the case of such parts, - the determination of dimensions, both external and internal, requires multiple manipulations and / or the use of various and costly means, linked to the very shapes of the parts to be checked. The present invention aims to avoid these drawbacks by providing a device which, without multiple manipulations and in an automatic manner, makes it possible to simultaneously determine the external and internal dimensions, for mechanical parts and other objects of all shapes.
A cet effet, l'invention a essentiellement pour objet un dispositif de contrôle dimensionnel sans contact pour pièces mécaniques et autres objets, qui comprend en combinaison :To this end, the subject of the invention is essentially a non-contact dimensional control device for mechanical parts and other objects, which comprises in combination:
- un module de mesure opto-électronique comportant une source de rayons X et un capteur opto-électronique, la zone située entre la source et le capteur étant apte à recevoir la pièce ou l'objet à contrôler, cette zone de mesure étant rendue accessible par un tunnel s 'ouvrant vers 1'extérieur,- an opto-electronic measurement module comprising an X-ray source and an opto-electronic sensor, the area between the source and the sensor being able to receive the part or the object to be checked, this measurement area being made accessible by a tunnel opening towards the outside,
- une unité centrale informatique associée au module de mesure, assurant le contrôle des commandes du dispositif, la mémorisation des résultats de la mesure et éventuellement leur traitement en vue de leur exploitation,a central computer unit associated with the measurement module, ensuring the control of the commands of the device, the memorization of the measurement results and possibly their processing with a view to their exploitation,
- un pupitre de contrôle destiné à un opérateur, équipé d'un écran et d'un clavier, pour la saisie des paramètres de la mesure et pour la visualisation des résultats obtenus.- a control desk for an operator, equipped with a screen and a keyboard, for entering the measurement parameters and for viewing the results obtained.
Le module de mesure opto-électronique à rayons X donne, sans aucun contact, une image des formes extérieures et intérieures de la pièce ou de l'objet à contrôler, selon un plan en coupe parallèle à une surface de mesure sur laquelle cette pièce ou cet objet est posé.The opto-electronic X-ray measurement module gives, without any contact, an image of the external and internal forms of the part or object to be checked, according to a plane in section parallel to a measurement surface on which this part or this object is placed.
La pièce ou l'objet à contrôler peut être introduit manuellement dans le tunnel donnant accès à la zone de mesure, ou de préférence de façon automatique, en étant déplacé par un moyen de transfert qui 1' introduit à une extrémité du tunnel et le fait ressortir à l'autre extrémité de ce tunnel, en le faisant passer par la zone
de mesure qui possède, . par exemple, une surface utile initiale de l'ordre de 100 cm2.The part or object to be checked can be introduced manually into the tunnel giving access to the measurement area, or preferably automatically, by being moved by a transfer means which introduces it at one end of the tunnel and makes it stand out at the other end of this tunnel, passing it through the area which has,. for example, an initial useful area of the order of 100 cm 2 .
L'unité centrale informatique assure la gestion du module de mesure opto-électronique, ainsi que la commande générale du dispositif. Plus particulièrement, cette unité centrale assure le séquencement logique des étapes de la mesure, la mise en mémoire de l'image recueillie, l'interface par rapport aux liaisons extérieures mises en oeuvre et le traitement final des données par rapport à des paramètres et données de référence pré-enregistrés.The central computer unit manages the opto-electronic measurement module, as well as the general control of the device. More particularly, this central unit ensures the logical sequencing of the steps of the measurement, the storage of the collected image, the interface with respect to the external links used and the final processing of the data with respect to parameters and data. of reference pre-recorded.
Les données de référence, qui correspondent à l'élément "étalon" auquel doivent être comparées les pièces ou objets à contrôler, peuvent être introduites en mémoire selon divers processus : - lecture directe par le module de mesure, sur une pièce ou un objet "étalon" disponible, des dimensions à contrôler,The reference data, which correspond to the "standard" element to which the parts or objects to be checked must be compared, can be entered into memory according to various processes: - direct reading by the measurement module, on a part or an object " standard "available, dimensions to be checked,
- et/ou numérisation d'un plan de la pièce ou de l'objet de référence sur un appareillage approprié, - et/ou mise en mémoire des caractéristiques de cette pièce de référence par transfert d'un fichier numérique de dessin en plan, issu d'un système de dessin assisté par ordinateur (CAO/DAO) .- and / or digitization of a plan of the part or of the reference object on an appropriate apparatus, - and / or storage of the characteristics of this reference part by transfer of a digital drawing file in plan, from a computer-assisted drawing system (CAD / CAD).
L'introduction de ces données de référence et de tous autres paramètres de commande du dispositif s'effectue à l'aide du pupitre de contrôle, équipé avantageusement d'une console graphique qui permet à l'utilisateur de visualiser comparativement les images recueillies et analysées par le dispositif. A ce dispositif peuvent être connectés, par l'intermédiaire d'interfaces, des équipements optionnels divers, notamment pour la connexion du dispositif à une installation externe de fabrication, contrôle et/ou conditionnement des pièces ou objets mesurés. Naturellement, la nature des pièces ou objets à contrôler doit être compatible avec la technique de mesure
par rayons X, c'est-à-dire que les pièces ou objets en cause doivent être perméables aux rayons X, tout en les absorbant partiellement en fonction de l'épaisseur de matière traversée par ces rayons, et les dimensions des pièces ou objets à contrôler doivent être en outre compatibles avec la surface utile de la zone de mesure.The introduction of these reference data and all other parameters for controlling the device is carried out using the control desk, advantageously equipped with a graphic console which allows the user to compare the collected and analyzed images. by the device. Various optional equipment can be connected to this device, via interfaces, in particular for connecting the device to an external installation for manufacturing, checking and / or packaging the parts or objects measured. Naturally, the nature of the parts or objects to be checked must be compatible with the measurement technique by X-rays, that is to say that the parts or objects in question must be permeable to X-rays, while partially absorbing them according to the thickness of material traversed by these rays, and the dimensions of the parts or objects to be checked must also be compatible with the useful surface of the measurement area.
De toute façon, l'invention sera mieux comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme d'exécution de ce dispositif de contrôle dimensionnel, et en illustrant une application particulière :In any case, the invention will be better understood with the aid of the description which follows, with reference to the appended diagrammatic drawing representing, by way of nonlimiting example, an embodiment of this dimensional control device, and in illustrating a particular application:
Figure 1 est un organigramme général d'un dispositif conforme à la présente invention ; Figure 2 représente, très schématiquement, le principe du module de mesure opto-électronique, faisant partie du dispositif selon l'invention ;Figure 1 is a general flow diagram of a device according to the present invention; Figure 2 shows, very schematically, the principle of the opto-electronic measurement module, forming part of the device according to the invention;
Figure 3 représente l'image d'une pièce mécanique, obtenue avec ce dispositif ; Figure 4 illustre l'intégration d'un dispositif selon l'invention dans une chaîne de contrôle, derrière une machine à décolleter numérisée.Figure 3 shows the image of a mechanical part, obtained with this device; Figure 4 illustrates the integration of a device according to the invention in a control chain, behind a digital bar turning machine.
Le dispositif de contrôle dimensionnel selon l'invention, destiné notamment à une mesure sans contact de pièces mécaniques comportant des cotes caractéristiques extérieures et intérieures telles que celle représenté en 1, comporte un module de mesure opto-électronique 2 indiqué schématiquement sur la figure 1, et représenté plus précisément à la figure 2. Le module de mesure opto-électronique 2 comprend une source de rayons X 3, un système optique 4 et un capteur opto-électronique 5. Ce module opto-électronique 2 est disposé transversalement, sur un tunnel 6 accessible par ses deux extrémités (voir aussi figure 4), l'ensemble formant un appareillage caréné. La pièce à contrôler 1 parcourt le tunnel 6, et elle est mesurée lors de son
passage entre la source de rayons X 3 et le capteur opto¬ électronique 5. Le tunnel 6 et le module 2 définissent par exemple une zone de mesure opto-électronique A d'une surface utile initiale de 100 mm x 100 mm. Ainsi, le module de mesure opto-électronique 2 donne, sans aucun contact, une image des formes extérieures et intérieures de la pièce 1, selon un plan en coupe parallèle à la surface de mesure sur laquelle cette pièce 1 est posée, et en fonction de la position de ladite pièce sur la surface de mesure. On obtient ainsi une image contrastée des formes profilées extérieures et intérieures de la pièce, image pouvant être mémorisée électroniquement et se présentant, par exemple, comme illustré sur la figure 3. Au module de mesure opto-électronique 2 est associée une unité centrale informatique 7 assurant le contrôle des commandes, la mémorisation des points de la mesure et le traitement de la mesure en vue de son exploitation. L'unité centrale 7 est elle-même associée, par l'intermédiaire d'interfaces 8 et 9, à des fichiers de données et des mémoires symbolisés en 10, et avec un pupitre de contrôle 11 destiné à un opérateur et équipé d'une console graphique avec écran 12 et clavier 13.The dimensional control device according to the invention, intended in particular for non-contact measurement of mechanical parts comprising external and internal characteristic dimensions such as that shown in 1, comprises an opto-electronic measurement module 2 indicated diagrammatically in FIG. 1, and shown more precisely in FIG. 2. The opto-electronic measurement module 2 comprises an X-ray source 3, an optical system 4 and an opto-electronic sensor 5. This opto-electronic module 2 is arranged transversely, on a tunnel 6 accessible by its two ends (see also Figure 4), the assembly forming a streamlined apparatus. The part to be checked 1 traverses the tunnel 6, and it is measured during its passage between the X-ray source 3 and the opto-electronic sensor 5. The tunnel 6 and the module 2 define for example an opto-electronic measurement zone A with an initial useful surface of 100 mm × 100 mm. Thus, the opto-electronic measurement module 2 gives, without any contact, an image of the external and internal shapes of the part 1, according to a plane in section parallel to the measurement surface on which this part 1 is placed, and in function the position of said part on the measurement surface. A contrasting image of the external and internal profiled shapes of the part is thus obtained, an image which can be stored electronically and which appears, for example, as illustrated in FIG. 3. With the opto-electronic measurement module 2 is associated a central computer unit 7 ensuring control of commands, memorization of measurement points and processing of the measurement with a view to its exploitation. The central unit 7 is itself associated, via interfaces 8 and 9, with data files and memories symbolized at 10, and with a control desk 11 intended for an operator and equipped with a graphic console with screen 12 and keyboard 13.
L'analyse de la pièce 1 ayant été faite, avec formation et mémorisation d'une image telle qu'illustrée sur la figure 3, l'unité centrale informatique 7 va réaliser le traitement des données recueillies, c'est-à- dire la comparaison avec un élément "étalon" et l'établissement d'un état des écarts di ensionnels par rapport à l'élément "étalon".The analysis of the part 1 having been made, with formation and storage of an image as illustrated in FIG. 3, the central computer unit 7 will carry out the processing of the data collected, that is to say the comparison with a "standard" element and establishment of a statement of dimensional deviations from the "standard" element.
L'élément "étalon" est introduit au préalable dans la mémoire de données 10 du dispositif, plusieurs voies étant utilisables pour 1 ' introduction de cet élément "étalon" : a) soit l'analyse dimensionnelle directe d'une pièce "étalon", sur le dispositif lui-même, avec cotation
de ses dimensions extérieures et/ou intérieures caractéristiques au moyen de la console d'utilisateur (écran 12 et clavier 13 du pupitre de contrôle 11) ; b) soit la numérisation d'un plan (dessin) de la pièce, par un appareillage standard 14 relié au pupitre de contrôle 11 ; c) soit par le transfert d'un fichier numérique de dessin en plan, en deux dimensions, dans un format standard à définir par la liaison informatique disponible au pupitre de contrôle 11.The “standard” element is introduced beforehand into the data memory 10 of the device, several channels being usable for the introduction of this “standard” element: a) either the direct dimensional analysis of a “standard” part, on the device itself, with rating of its characteristic exterior and / or interior dimensions by means of the user console (screen 12 and keyboard 13 of the control desk 11); b) or the digitization of a plan (drawing) of the part, by standard equipment 14 connected to the control desk 11; c) or by the transfer of a digital drawing file in plan, in two dimensions, in a standard format to be defined by the computer link available at the control desk 11.
Dans le cas des voies b) et c) d'introduction des données relatives à l'élément "étalon", il faut, à partir de la console d'utilisateur, redéfinir les dimensions cotées du plan numérisé ou du dessin transféré. L'unité centrale informatique 7 ayant établi les écarts dimensionnels entre les cotes mesurées et celles relatives à l'élément "étalon", ces écarts pourront être exploités pour piloter, au travers de l'interface 9, un procédé associé externe au dispositif, procédé mis en oeuvre par exemple par un automate 15.In the case of channels b) and c) for entering data relating to the "standard" element, it is necessary, from the user console, to redefine the dimensioned dimensions of the digitized plan or of the transferred drawing. The central computer unit 7 having established the dimensional differences between the dimensions measured and those relating to the "standard" element, these differences can be used to control, through the interface 9, a process associated external to the device, process implemented for example by an automaton 15.
Le cycle moyen de mesure d'une pièce mécanique 1, comportant 1'analyse opto-électronique et le traitement informatique des données, pourra s'effectuer en un temps n'excédant pas 2 secondes, ce qui permettra, dans les applications industrielles du dispositif, le contrôle de séries de pièces à une cadence élevée, s'adaptant à un processus de fabrication, contrôle et/ou conditionnement de pièces. La précision obtenue au point, sur l'analyse de l'image peut être de 5μm ou mieux. A titre d'exemple d'application, la figure 4 montre le dispositif précédemment décrit, intégré dans une chaîne de contrôle de pièces 1 située derrière une machine à décolleter numérisée 16, dont la commande numérique est indiquée en 17. Les pièces mécaniques 1 usinées sur la machine 16 parviennent sur un transporteur sans fin 18 qui les introduit successivement dans le tunnel 6 et leur fait
parcourir selon la flèche F ce tunnel 6, où chaque pièce est analysée à son passage dans la zone de mesure A.The average measurement cycle of a mechanical part 1, comprising opto-electronic analysis and computerized data processing, can be carried out in a time not exceeding 2 seconds, which will allow, in industrial applications of the device , the control of series of parts at a high rate, adapting to a manufacturing process, control and / or packaging of parts. The precision obtained in point, on the image analysis can be 5μm or better. As an example of an application, FIG. 4 shows the device described above, integrated into a parts control chain 1 located behind a digital bar turning machine 16, the numerical control of which is indicated at 17. The mechanical parts 1 machined on the machine 16 reach an endless conveyor 18 which successively introduces them into the tunnel 6 and makes them travel along arrow F through this tunnel 6, where each part is analyzed as it passes through the measurement area A.
On réalise ainsi un dispositif intégré de conception manuelle pour le contrôle - réception et le contrôle industriel en général, applicable à la réalisation des objectifs de qualité.An integrated manual design device is thus produced for control - reception and industrial control in general, applicable to the achievement of quality objectives.
Il va de soi que l'invention ne se limite pas à la seule forme d'exécution de ce dispositif de contrôle dimensionnel qui a été décrite ci-dessus, à titre d'exemple ; elle en embrasse, au contraire, toutes les variantes de réalisation et d'application respectant le même principe. Ainsi l'on ne s'éloignerait pas du cadre de 1*invention en prévoyant d'autres interfaces pour des appareillages optionnels, nécessaires à la mise en oeuvre du dispositif dans des applications particulières, ou encore en destinant le même dispositif au contrôle dimensionnel sans contact non seulement de pièces mécaniques, mais aussi de tous autres objets dont la matière (métal, bois, matière plastique, etc..) est perméable aux rayons X.
It goes without saying that the invention is not limited to the sole embodiment of this dimensional control device which has been described above, by way of example; on the contrary, it embraces all of the variant embodiments and applications respecting the same principle. Thus, one would not depart from the scope of the invention by providing other interfaces for optional apparatuses, necessary for the implementation of the device in particular applications, or else by destining the same device for dimensional control without contact not only of mechanical parts, but also of all other objects whose material (metal, wood, plastic, etc.) is permeable to X-rays.
Claims
1. Dispositif de contrôle dimensionnel sans contact pour pièces mécaniques et autres objets, permettant la mesure automatique de leurs cotes extérieures et intérieures et leur comparaison avec un élément "étalon", caractérisé en ce qu'il comprend en combinaison :1. Non-contact dimensional control device for mechanical parts and other objects, allowing the automatic measurement of their external and internal dimensions and their comparison with a "standard" element, characterized in that it comprises in combination:
- un module de mesure opto-électronique (2) comportant une source de rayons X (3) et un capteur opto- électronique (5) , la zone (A) située entre la source (3) et le capteur (5) étant apte à recevoir une pièce ou un objet à contrôler (1) , cette zone de mesure (A) étant rendue accessible par un tunnel (6) sOuvrant vers l'extérieur, et ledit module de mesure opto-électronique à rayons X (2) étant prévu pour donner une image contrastée des formes extérieures et intérieures (figure 3) de la pièce ou de l'objet à contrôler (1), selon un plan en coupe parallèle à une surface de mesure contre laquelle cette pièce ou cet objet (1) est posé, - une unité centrale informatique (7) associée au module de mesure (2) , assurant le contrôle des commandes du dispositif, la mémorisation des résultats de la mesure et éventuellement leur traitement en vue de leur exploitation, - un pupitre de contrôle (11) destiné à un opérateur, équipé d'un écran (12) et d'un clavier (13), pour la saisie des paramètres de la mesure et pour la visualisation des résultats obtenus.- an opto-electronic measurement module (2) comprising an X-ray source (3) and an opto-electronic sensor (5), the zone (A) located between the source (3) and the sensor (5) being suitable to receive a part or an object to be inspected (1), this measurement area (A) being made accessible by a tunnel (6) opening towards the outside, and said opto-electronic X-ray measurement module (2) being designed to give a contrasting image of the external and internal forms (figure 3) of the part or object to be checked (1), along a plane in section parallel to a measurement surface against which this part or this object (1) is placed, - a central computer unit (7) associated with the measurement module (2), ensuring the control of the commands of the device, the storage of the measurement results and possibly their processing for their exploitation, - a control desk (11) intended for an operator, equipped with a screen (12) and a keyboard (13), for entering the measurement parameters and for viewing the results obtained.
2. Dispositif de contrôle dimensionnel sans contact pour pièces mécaniques et autres objets, selon la revendication 1, caractérisé en ce que le module de mesure (2) comporte un moyen de transfert (18) qui déplace chaque pièce ou objet à contrôler (1) en l'introduisant à une extrémité du tunnel (6) et le fait ressortir à l'autre extrémité de ce tunnel, en le faisant passer par la zone de mesure (A) . 2. Non-contact dimensional control device for mechanical parts and other objects, according to claim 1, characterized in that the measurement module (2) comprises a transfer means (18) which moves each part or object to be checked (1) by introducing it at one end of the tunnel (6) and bringing it out at the other end of this tunnel, passing it through the measurement zone (A).
3. Dispositif de contrôle dimensionnel sans contact pour pièces mécaniques et autres objets, selon la revendication 1 ou 2, caractérisé en ce que la zone de mesure (A) possède une surface utile initiale de l'ordre de 100 cm2.3. Non-contact dimensional control device for mechanical parts and other objects, according to claim 1 or 2, characterized in that the measurement area (A) has an initial useful area of the order of 100 cm 2 .
4. Dispositif de contrôle dimensionnel sans contact pour pièces mécaniques et autres objets, selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'unité centrale informatique (7) est prévue pour assurer le sequencement logique des étapes de la mesure, la mise en mémoire de l'image recueillie (figure 3), l'interface (8,9) par rapport aux liaisons extérieures mises en oeuvre et le traitement final des données par rapport à des paramètres et données de référence pré- enregistrés (en 10) .4. Non-contact dimensional control device for mechanical parts and other objects, according to any one of claims 1 to 3, characterized in that the central computer unit (7) is provided to ensure the logical sequencing of the steps of the measurement. , the storage of the collected image (FIG. 3), the interface (8, 9) in relation to the external links used and the final processing of the data in relation to pre-recorded parameters and reference data ( in 10).
5. Dispositif de contrôle dimensionnel sans contact pour pièces mécaniques et autres objets, selon la revendication 4, caractérisé en ce que les données de référence, correspondant à l'élément "étalon" auquel doivent être comparés les pièces ou objets à contrôler (1) , sont introduites en mémoire (10) par :5. Non-contact dimensional control device for mechanical parts and other objects, according to claim 4, characterized in that the reference data, corresponding to the "standard" element with which the parts or objects to be checked must be compared (1) , are introduced into memory (10) by:
- lecture directe par le module de mesure (2) , sur une pièce ou un objet "étalon" disponible, des dimensions à contrôler, - et/ou numérisation d'un plan de la pièce ou de l'objet de référence sur un appareillage (14),- direct reading by the measurement module (2), on a part or an available "standard" object, of the dimensions to be checked, - and / or digitization of a plan of the part or of the reference object on an apparatus (14),
- et/ou transfert d'un fichier numérique de dessin en plan, en deux dimensions.- and / or transfer of a digital drawing file in plan, in two dimensions.
6. Dispositif de contrôle dimensionnel sans contact pour pièces mécaniques et autres objets, selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le pupitre de contrôle (11) est équipé d'une console graphique (12,13) prévue pour visualiser comparativement les images recueillies (figure 3) et analysées par le dispositif. 6. Non-contact dimensional control device for mechanical parts and other objects, according to any one of claims 1 to 5, characterized in that the control desk (11) is equipped with a graphic console (12,13) provided to compare the images collected (Figure 3) and analyzed by the device.
7. Dispositif de contrôle dimensionnel sans contact pour pièces mécaniques et autres objets, selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il est pourvu d'interfaces (9) pour sa connexion à une installation externe (15 ; 16) de fabrication, contrôle et/ou conditionnement des pièces ou objets mesurés (1) . 7. Non-contact dimensional control device for mechanical parts and other objects, according to any one of claims 1 to 6, characterized in that it is provided with interfaces (9) for its connection to an external installation (15; 16) of manufacture, control and / or packaging of the parts or objects measured (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9207307A FR2692348B1 (en) | 1992-06-11 | 1992-06-11 | NON - CONTACT DIMENSIONAL CONTROL DEVICE FOR MECHANICAL PARTS AND OTHER OBJECTS. |
| PCT/FR1993/001235 WO1995016893A1 (en) | 1992-06-11 | 1993-12-14 | Contact-free dimensional control device for mechanical parts and other objects |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9207307A FR2692348B1 (en) | 1992-06-11 | 1992-06-11 | NON - CONTACT DIMENSIONAL CONTROL DEVICE FOR MECHANICAL PARTS AND OTHER OBJECTS. |
| PCT/FR1993/001235 WO1995016893A1 (en) | 1992-06-11 | 1993-12-14 | Contact-free dimensional control device for mechanical parts and other objects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1995016893A1 true WO1995016893A1 (en) | 1995-06-22 |
Family
ID=26229527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1993/001235 WO1995016893A1 (en) | 1992-06-11 | 1993-12-14 | Contact-free dimensional control device for mechanical parts and other objects |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2692348B1 (en) |
| WO (1) | WO1995016893A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115300143A (en) * | 2022-08-24 | 2022-11-08 | 必励(深圳)医疗器械有限公司 | Evaluation method of personalized dental abutment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3683187A (en) * | 1970-03-26 | 1972-08-08 | Schlumberger Technology Corp | Methods and apparatus for inspecting tubular goods using a continuous signal calibrating system |
| US4200921A (en) * | 1976-04-22 | 1980-04-29 | Massachusetts Institute Of Technology | Apparatus and method whereby wave energy is correlated with positional relationships in a system |
| EP0201849A2 (en) * | 1985-05-09 | 1986-11-20 | Scientific Measurement Systems I, Ltd. | Method and apparatus for dimensional analysis of continuously produced tubular objects |
| US5042055A (en) * | 1990-03-12 | 1991-08-20 | Art Wirt | X-ray threaded pipe joint analysis system |
| WO1991019164A1 (en) * | 1990-05-31 | 1991-12-12 | International Digital Modeling Corporation | An automated system for controlling the quality of geometrically regular-shaped products during their manufacture |
-
1992
- 1992-06-11 FR FR9207307A patent/FR2692348B1/en not_active Expired - Fee Related
-
1993
- 1993-12-14 WO PCT/FR1993/001235 patent/WO1995016893A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3683187A (en) * | 1970-03-26 | 1972-08-08 | Schlumberger Technology Corp | Methods and apparatus for inspecting tubular goods using a continuous signal calibrating system |
| US4200921A (en) * | 1976-04-22 | 1980-04-29 | Massachusetts Institute Of Technology | Apparatus and method whereby wave energy is correlated with positional relationships in a system |
| EP0201849A2 (en) * | 1985-05-09 | 1986-11-20 | Scientific Measurement Systems I, Ltd. | Method and apparatus for dimensional analysis of continuously produced tubular objects |
| US5042055A (en) * | 1990-03-12 | 1991-08-20 | Art Wirt | X-ray threaded pipe joint analysis system |
| WO1991019164A1 (en) * | 1990-05-31 | 1991-12-12 | International Digital Modeling Corporation | An automated system for controlling the quality of geometrically regular-shaped products during their manufacture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115300143A (en) * | 2022-08-24 | 2022-11-08 | 必励(深圳)医疗器械有限公司 | Evaluation method of personalized dental abutment |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2692348A1 (en) | 1993-12-17 |
| FR2692348B1 (en) | 1997-04-11 |
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