EP1291599A2 - Dispositif et procédé de détermination de l'usure d'un tube, tel un tube d'une arme - Google Patents
Dispositif et procédé de détermination de l'usure d'un tube, tel un tube d'une arme Download PDFInfo
- Publication number
- EP1291599A2 EP1291599A2 EP02292181A EP02292181A EP1291599A2 EP 1291599 A2 EP1291599 A2 EP 1291599A2 EP 02292181 A EP02292181 A EP 02292181A EP 02292181 A EP02292181 A EP 02292181A EP 1291599 A2 EP1291599 A2 EP 1291599A2
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- EP
- European Patent Office
- Prior art keywords
- tube
- mobile
- measuring
- measuring device
- wear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A31/00—Testing arrangements
- F41A31/02—Testing arrangements for checking gun barrels
Definitions
- the technical sector of the present invention is that devices and methods for measuring wall wear internal of a tube, for example a weapon tube.
- the object of the present invention is to provide a device and method for a gun barrel given, to measure the depth and location of the areas waste.
- the invention also proposes a method of prediction for estimating the residual life of this tube.
- the subject of the invention is a device for measuring the wear of the inner wall of a tube, in particular the tube of a weapon, characterized in that it comprises a tool endoscopic inspection of the inner wall of the tube and a computer, said tool comprising a mobile of inspection intended to progress in the tube, said mobile being equipped with a rotating inspection head equipped with a laser module for distance measurement of the inner wall, the mobile and the computer being connected by means of transmission of measurements.
- the laser module will be configured to make measurements of its distance to the wall of the tube by triangulation.
- the measuring device will include means for determining the axial position of the mobile in the tube.
- the mobile may include means of training in translation and means for measuring the angular position rotating head.
- the drive means may comprise a geared motor driving wheels.
- the wheels may have a profile substantially frustoconical, a notched collar being provided at the level of the great base of the truncated cone.
- Means for measuring the angular position of the head rotary device may be constituted by a cooperating coder with a drive motor in rotation of the head.
- the mobile may include a means of controlling its position relative to the vertical, means consisting of a inclinometer.
- the measuring device will include an interface connecting the mobile and the computer, interface comprising a drum winder of a cable connecting the mobile to the computer and an encoder for measuring the length of the unwound cable.
- the drum may include a drum with a throat helical cable receiving.
- the encoder can be driven by the geared motor rotating the drum.
- the measuring device according to the invention will comprise advantageously means for fixing the interface to position the mobile at the mouth of the tube.
- This interface may consist of a platinum of receiving the mobile provided at one end of the means of fixing on the tube and at the other end of the drum.
- Endoscopic tools may advantageously be provided also a video camera to realize views of the tube wall.
- the endoscopic tooling will include a means stroboscopic lighting of the tube.
- the observation directions of the laser module and the video camera may be orthogonal.
- the mobile can be equipped with balancing ballast minimizing the gyroscopic effect induced by the rotation of the inspection head.
- the correction of the distance data may include least one step of eliminating the information considered as aberrant because exceeding a given threshold.
- Correction of distance data may include a step of determining the eccentricity of the measurement, step comprising a calculation of the average diameter of the tube and the application of a radial centering algorithm allowing to eliminate a sinusoidal component of the distance data for each measurement line.
- a video recording of the inner surface of the tube following an acquisition along of a propeller having a second determined step and which will run from one end to the other of the tube.
- the video recording can be realized image by image, and be synchronized with strobe light, to associate with each video image its coordinates angular and axial measured with encoders.
- the video recording can be done during a one-way trip from one tube mouth to the other and laser recording during the return journey.
- the calculator can then incorporate a database of data comprising at least one life profile in the form of predictive curves of tube life expectancy for a ammunition given and according to the wear and algorithm allowing the choice of one of the curves according of life data which are constituted by the numbers of ammunition of each type already drawn by the tube to be analyzed, life data that will be introduced by means of a input interface.
- the database will incorporate at least a life profile associated with the overall wear of the tube and life profiles associated with wear in at least two zones longitudinal dimensions of the tube.
- the choice algorithm may include the calculation of a R ratio of the number of ammunition references already drawn the total number of other ammunition already fired.
- the life profiles database will be able to understand predictive curves of the life of the tube expressed in number of reference ammunition that it is possible to draw according to wear, the calculator incorporating by elsewhere in memory at least one conversion coefficient multiplicative to convert the maximum number of reference ammunition that can be shot in one maximum number of at least one other type of ammunition.
- a first advantage of the present invention resides in a fully automatic acquisition of the state of surface of a tube.
- Another advantage lies in a reliable measurement and overall location of the points of wear and especially of their depth and extent.
- Another advantage lies in the possibility offered to use the results of the measurements to determine the duration of life of a tube.
- Yet another advantage of the invention lies in the fact that the measurements made make it possible to adapt the conditions for the subsequent use of a weapon tube in function of ammunition already fired.
- FIG. 1 which represents an overview of the device according to the invention, we see a mobile inspection 1 positioned at the free end of a tube 2, for example the tube of a weapon to be inspected, through a fixing interface 3 attached to the end of the tube during the time of the inspection operation.
- This mobile is consistent in a trolley forming a supporting endoscopy tool laser and video examination means of the wall of the tube.
- the mobile 1 has a generally cylindrical shape whose outer diameter is smaller than and close to the inner diameter of the tube.
- a calculator 4 is connected to the mobile by means 125, 5 and 8 to recover and process the measures of depth and location of tube defects 2 carried out by the inspection mobile 1 who will go through his internal surface as will be explained below.
- These means 125, 5 and 8 are mainly by cables and associated elements.
- the interface of fixation 3 supports a winder reel 5 which ensures the winding and unwinding of a cable 8 and the transfer information to calculator 4 through the cable 125, this during all the movements of the mobile inspection 1 inside the tube.
- Interface 3 is connected to the tube by fastening means 6.
- the tube is shown in section partial after several parts of its length. We thus visualizes in the same figure the mouth of the tube 2 and the chamber 7 of this same tube.
- the inspection mobile 1 is represented in solid lines positioned on the means of fixing 3 and in dashed lines introduced into the tube.
- FIG 2 which represents a more detailed view of the fixing interface 3, we see that it is built around a plate 31, which is mounted in the extension of the tube 2, ensures the reception of the mobile inspection 1.
- a introduction guide 32 is mounted on the plate 31 by intermediate supports 33 fixed on the plate.
- Guide 32 introduces a semi-cylindrical shape substantially shaped to that of the inner surface of the tube 2 to ensure the guidance of the inspection mobile.
- the plate 31 is fixed rigidly to the end of the tube by a fixing bracket 34 which surrounds the end of the tube 2.
- This caliper makes it possible to position the plate 3 in abutment on the end of the tube 2 by preventing slipping along the 2.
- a clamping pad 35 operated by a clamping axis 36 and a clamping knob 37 provide the maintaining the assembly by tightening on the tube 2.
- a fixed Vee 38 completes the fixation by leaning on the part lower outer tube. This means ensures quick place of the device (in less than two minutes).
- the plate 31 is provided with a bracket 30 on which is fixed a fixing plate 39 of the reel 5.
- the plate 31 is still provided with two rollers 40 placed vis-a-vis and a pulley 41, the rollers and the pulley guiding the cable 42 from the mobile 1 to the drum 5.
- the inspection mobile 1 is shown in detail on the figures 4 and 5 and it is built around a body 50 formed two half-shells 51 and 52.
- This mobile is equipped with wheels 53 to ensure its progression in the tube, for example eight wheels.
- a geared motor 54 drives by via a mounting wheel and worm 55 a drive gear 56.
- the gear motor 54 and the assembly wheel / worm are attached to the mobile with a support.
- the toothed wheel 56 drives, via the axis of wheel 57, the first two wheels 58.
- Each other pair of wheels is driven by a pinion 62.
- Free rotating intermediate gears 65 are interposed between each pinion 62 and between the wheel 56 and the first gear 62. They provide a synchronous rotation drive and in the same direction of all wheels from the geared motor 54.
- Each set of wheels rotates relative to the body 50 thanks to a pair of ball bearings 59 and 60.
- Four sets of this type are mounted on the mobile.
- the wheels 58 have a shape specially adapted to the shape of the cylindrical inner wall of the tube 2 in which the mobile will evolve, allowing its movement according to a rectilinear trajectory.
- An encoder 61 driven by the geared motor 54 measures the progress of the mobile inspection 1 in the tube 2.
- the mobile is extended by one side by a rotary head 63 and the other by a connector 64 connecting a cable 42 to the computer 4.
- the head 63 is constituted a tip 70 movable in rotation relative to a portion 71 rigidly fixed to the mobile inspection and supporting the means for rotating the endpiece 70.
- the mobile 1 is provided at the bottom with a ballast 72 to compensate for the effect gyro of the rotary end 70 and ensure a correct positioning of the mobile in the tube 2 and a the most rectilinear trajectory of the mobile in the tube.
- Figure 6 which represents an enlarged view of the head 63, we see that the rotary end 70 itself supports a video camera 73 and two groups of two diodes 74 stroboscopic lighting (LED) and a laser module 75.
- the axes of the camera 73 and the laser 75 are arranged orthogonal way, that is to say perpendicular to the plane of the figure for the camera and in the plane of the figure for the laser.
- the tip 70 is rotated so continuous over 360 ° by means of a geared motor 76 whose output shaft 77 is integral with a first wheel toothed 78, itself meshing with a second toothed wheel 79 secured to an axis 80 itself integral with the rotary end 70.
- the mobile end 70 is rotatably mounted relative to the fixed part 71 by means of two bearings 82 and 83 whose inner rings are secured with a spacer 81 and a flange 89.
- the movable tip is therefore driven following an endless rotation movement.
- the laser camera 75, the video camera 73 and the lights 74 are connected by cables protected by a fixed sleeve 84 arranged inside of the axis 80 and fixed by a plate 85 to the part 71.
- Geared motor 76 is connected to an encoder 69 to identify the angular position of the head 63 compared to an initial reference.
- FIG. 8 which is a section AA of FIG. sees that the wheels 58 have a frustoconical profile and are provided with a notched collar 88 at the level of the large base of the truncated cone.
- This particular structure ensures a regular and constant movement in the tube 2 regardless of the state of wear of the latter.
- Figures 9 and 10 show views of the structure of the mobile tip 70 which is in the general form a cylinder consisting of a head body 90 and a cap 91 assembled by screws. In this structure are mounted with axes perpendicular the 75 laser sensor and a camera set video 73.
- the camera set consists of a camera module 92 fixed on a camera support 93.
- a camera cache 94 inserted in the head body 90, carries the camera support 93 and a porthole 95 which allows shooting.
- Four white LEDs 74 are arranged concentrically around the porthole 95 to allow the illumination of the area observed by the camera module 92.
- the cable harness 96 connected to the camera 92 and to the LED 74 and the cable harness 97 connected to the laser 75 come out of the rotating part 70 by a rotating contact 98 to form a beam 99 which is arranged in the sleeve 84 (fig.6) of the fixed part 71. It is this beam 99 which is connected to the female part of the connector 64, through the mobile 1.
- the mobile 1 is connected to a computer 4 via the transmission means 8 consisting primarily of a cable 42.
- This cable is wound on a drum 5 and the position of the mobile 1 in the tube 2 is determined by measuring the length of cable unfolded as will be explained below.
- the drum 5 comprises, as shown in FIGS. 11 (front view) and 12 (left view), a fixed frame built by assembly a right flange 100 and a left flange 101 parallel between them and connected by two axes 104 and a front plate 105 supporting a female fastener 106 for cooperate with plate 39 to ensure rapid fixation of the drum 5 on the fixing interface 3 (FIG 2).
- One of pins 104 carries a rotary roller 103 guiding the cable winding on the drum.
- Solidarity of this fixed frame is mounted a support 107.
- This support consists of two side plates 108, one upper plate 109 and a fixing plate 110 supporting a geared motor 117.
- the support 107 carries a bell 126 receiving two ball bearings 111 and 112 allowing the rotation of a rotating assembly 113.
- This one is constructed by assembling a drum 114, provided with a helical groove for receiving the cable 42 and ensuring the winding of the latter.
- the drum 114 is mounted on a axis 115 and carries a cover 116.
- the rotating assembly 113 is set in motion by the geared motor 117 fixed on the fixing plate 110 and driving a first toothed pulley 118.
- the latter drives the axis 115 of the drum, by means of a belt notched 119 which causes a second toothed pulley 127 secured to the drum 114.
- a fixed rotation handle 120 to the drum through the cover 116, allows the manual rotation of the rotating assembly 113 to wind manually cable 42.
- An encoder 121 is rotated by the geared motor 117, which allows to know the angle of rotation drum 114 of the drum from a reference moment and therefore the unrolled length of the cable 42 as and when rectilinear movement of the mobile in the tube. We thus deduces the position of the inspection mobile 1 along the axis of the tube 2.
- the cable 42 is wound on the drum 114 inside the its helical groove and then crosses axis 115 to join a connector 124 of the cable 125 connecting with the computer 4, via a rotating connector 123.
- the operation is as follows.
- Endoscopic tooling (interface 3 and mobile 1) is placed at the end of the tube 2 to be measured, the latter being positioned roughly horizontally.
- the editing is fast in a few seconds.
- Just put the mouth of the tube with the fixing interface in position by placing the shovel 32 in the extension of the tube 2 as shown on the figure 2.
- the device positions itself thanks to stop surfaces of Vee 38 and caliper 34 and is blocked by the tightening knob 37.
- the measuring mobile 1 is deposited on the shovel as shown in Figure 1 and is connected to the winder drum 5 by its umbilical cable 42.
- the drum is itself connected to the computer 4 by the cable 125.
- the mobile 1 is placed in front of the end of the tube, on the fixing interface which ensures its introduction and guidance. Just order in synchronism the advance of the motorized mobile 1 and the unfolding of the cable 42 by the geared motor 117.
- the computer 4 controls the measurements and / or the video image taking together with lighting Strobe.
- the mobile 1 represented in dotted line can progress to a position limit at the level of the chamber of tube 1, position fixed by the encoder 121 which determines at every moment the position of the mobile in the tube.
- the results are issued by the calculator that integrates a suitable calculation program.
- distance data laser
- angular position of the inspection head encoder motorization
- Figure 13a shows the internal structure of the sensor laser 75 as well as the implementation of this principle of triangulation for measurement of tube defects.
- the sensor 75 comprises a laser diode 66 as well as a charge transfer plan detector (CCD) 67.
- the management of emission of the laser diode is substantially perpendicular at the surface of the tube 2 to be measured (direction AH).
- the plan of detector 67 is inclined with respect to the surface of the tube 2. thus the observation field 68 has an inclined OH axis, by construction of the sensor 75, of a known and fixed angle ⁇ .
- the laser diode 66 projects on the surface of the tube a light spot T having a diameter of about 0.3 mm.
- This spot T is observed by the detector 67 and its image I on the detector has a position that is directly dependent on the distance D between the laser transmitter and the spot, so the distance separating the laser head from the analyzed surface.
- the distance D thus measured will vary according to the depth of defects.
- This distance also varies according to a eccentricity component of the measuring head compared to the axis of the weapon's tube. Depth at a point measurement will be evaluated by eliminating the component eccentricity.
- Figure 13b shows the distance signal S1 provided by the sensor 75.
- This signal has the overall shape of a sinusoid with respect to which measured variations correspond to the variations of distance due to the state of the tube surface.
- the eccentricity correction for a line of sweeping is the following way.
- We add to the real signal S1 measured a sinusoidal signal S3 in phase opposition to this theoretical sinusoid S2 and of the same amplitude. This results in a centered signal S4 which theoretically gives the variations of distance due solely to the surface condition of the tube.
- the good or bad state of the tube can then be simply defined from thresholds predefined by experience.
- the measurement method according to the invention can also be applied to the prediction of the residual lifespan of a tube, ie to the determination of the number of ammunition of a given type that the investigated weapon tube can still shoot.
- This ranking amounts to choosing one of the life curves preestablished type best matching the previous life of the tube considered.
- This curve then gives a relation mathematical algorithm to connect the level of wear that will be measured with a number of residual strokes still possible for a given ammunition.
- the method according to the invention overall wear volume and by longitudinal areas as indicated previously.
- the measurement of the overall volume of wear corresponding to the volume of defects, by the method according to the invention, will allow to easily deduce the number of shots residuals that can be drawn for each type of ammunition.
- the basic idea of this prediction lies in the association of knowledge in number and type of munitions already fired by a tube with at least one profile of predictive life.
- the ammunition already drawn by the tube as follows: X the number of ammunition of exercise, Y the number of dumped ammunition and Z the number of ammunition arrows.
- Each life profile will be defined by a mathematical curve giving the number of arrows ammunition shots (N OFL ) that it is still possible to draw according to the volume of wear (V) to be measured.
- Figure 14 gives as an example a network of three curves life profiles f1, f2 and f3.
- the first curve f1 corresponds to a profile such that the ratio R ⁇ 5% which corresponds to a low number of shots ammunition arrow
- the second curve f2 corresponds to a profile such that R is between 5 and 20%
- the third curve f3 corresponds to a profile such that R ⁇ 20% which corresponds to a large number of shot ammunition arrows.
- the limit values of R can be set in function of the natures of smooth or striped tubes and the number and of the nature of the possible ammunition.
- Life curves are logarithmic curves decreasing whose coefficients depend on the geometry of the tube, the manufacturing process of the tube considered (chromium resistance) and the erosive characteristics of ammunition.
- Curves must therefore be established empirically for a given type of weapon and its associated ammunition by the field measurement of the wear of different tubes having different life profiles. These measures allow to empirically establish a mathematical relationship between the level of wear measured and the number of ammunition already from a given nature. The reliability of the curves point will of course depend on the number of tubes that can be beings analyzed and it will grow over time by the updating the empirical tables associating the profiles of life and level of wear.
- the curve previously chosen life (for example f1 in FIG. 14) will automatically associate with measured wear volume (V1) the number of shots N1 ammunition arrows that he is still possible to shoot with this tube.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
Description
- on réalise une mesure par laser de la distance de la paroi interne du tube suivant une acquisition point par point le long d'une hélice selon un premier pas déterminé d'une extrémité à l'autre du tube,
- on associe à chaque point de mesure ses coordonnées angulaires et axiales à l'aide de codeurs,
- on corrige les données de mesure de distance pour calculer des données de profondeur des défauts de la paroi interne.
- on établit au moins un profil de vie d'un type de tube sous la forme de courbes empiriques donnant le nombre de munitions d'un type donné qu'il est possible de tirer en fonction d'un volume donné d'usure et en fonction des types de munitions déjà tirées par ce tube,
- on associe le tube d'arme à analyser à ce profil de vie ou bien à un de ces profils de vie en fonction du nombre et du type de munitions effectivement tirées par ce tube,
- on mesure l'usure réelle du tube à examiner,
- on déduit de la valeur de cette usure mesurée et du profil de vie ainsi associé au tube le nombre de munitions d'un type donné qu'il est encore possible de tirer.
- la figure 1 est une vue d'ensemble du dispositif de détermination de l'usure,
- la figure 2 est une vue de face de l'interface de fixation,
- la figure 3 est une vue de dessus de cette interface,
- la figure 4 est une vue de face du mobile d'inspection,
- la figure 5 est une vue de dessus de ce mobile,
- les figures 6 et 7 sont des agrandissements partiels respectivement des figures 4 et 5 montrant la tête rotative,
- la figure 8 est une coupe selon AA de la figure 7,
- la figure 9 est une coupe axiale de la tête d' inspection,
- la figure 10 est une autre coupe de la tête d' inspection,
- la figure 11 est une vue de face en coupe du touret,
- la figure 12 est une de gauche de ce touret,
- la figure 13a schématise la structure interne du capteur laser,
- la figure 13b montre le signal de distance fourni par le capteur et les signaux obtenus après correction, et
- la figure 14 donne un exemple de réseau de courbes de profil de vie pour un tube d'arme.
- visualisation 3D de la paroi du tube avec ses défauts,
- mise en oeuvre d'une échelle de couleurs représentative des profondeurs des défauts,
- possibilité de positionner une fenêtre de mesure par le calculateur et d'associer en parallèle sur un écran la vidéo et la représentation 3D du défaut mesuré,
- réalisation de tables synthétisant les résultats de mesure : densité surfacique de défauts suivant différentes zones longitudinales du tube, densité surfacique globale suivant les positions angulaires de la tête.
- élimination des aberrations de mesure : on calcule la différence de mesure entre deux points voisins ; si cette différence dépasse un seuil fixé, le second point prend la valeur du premier,
- calcul des coefficients d'excentricité de mesure : pour chaque ligne d'acquisition (rotation de 360°), on recherche le point le plus haut de la mesure (rayon maximal) et on note son amplitude ainsi que sa localisation angulaire. On calcule aussi la valeur moyenne de chaque ligne, c'est-à-dire le rayon moyen au niveau de cette ligne,
- calcul du diamètre moyen du tube à partir des moyennes mesurées à partir d'un échantillon correspondant à une zone médiane du tube en éliminant les 1000 premières et dernières lignes de mesure,
- on filtre le signal comme présenté précédemment pour éliminer la composante d'excentricité,
- on exclut les lignes dont le point le plus haut dépasse un seuil donné (aberrations de mesure),
- calcul des surfaces et volumes des défauts : la connaissance du profil en trois dimensions (3D) du défaut permet de déterminer par calcul mathématique le volume et la surface du défaut. Ce calcul est réalisé pour différentes profondeurs. On procède ainsi à cette détermination pour quatre profondeurs données par exemple 0,13, 1, 2 et 3 mm. Ces profondeurs sont représentatives d'une usure faible, moyenne et forte.
- introduction dans le calculateur des données relatives à la vie antérieure du tube à étudier (nombre et nature des coups déjà tirés : obus flèches, obus à charge creuse, obus d'exercice...),
- classement du tube dans un des profils de vie type préétablis et mémorisés dans le calculateur.
Claims (35)
- Dispositif de mesure de l'usure de la paroi interne d'un tube (2), notamment le tube d'une arme, caractérisé en ce qu'il comprend un outillage endoscopique (1, 3, 5) d'inspection de la paroi interne du tube et un calculateur (4), ledit outillage comprenant un mobile d'inspection (1) destiné à progresser dans le tube (2), ledit mobile étant muni d'une tête d'inspection rotative (63) équipée d'un module laser (75) de mesure de distance de la paroi interne, le mobile (1) et le calculateur (4) étant reliés par des moyens de transmission (8) des mesures.
- Dispositif de mesure selon la revendication 1,
caractérisé en ce que le module laser (75) est configuré pour effectuer des mesures de sa distance à la paroi du tube (2) par triangulation. - Dispositif de mesure selon la revendication 1 ou 2, caractérisé en ce qu'il comprend des moyens (121) pour déterminer la position axiale du mobile (1) dans le tube (2).
- Dispositif de mesure selon la revendication 1, 2 ou 3, caractérise en ce que le mobile (1) comprend des moyens d'entraínement (54) en translation et des moyens de mesure (69) de la position angulaire de la tête rotative (63).
- Dispositif de mesure selon la revendication 4,
caractérisé en ce que les moyens d'entraínement (54) comprennent un moto-réducteur entraínant des roues (58). - Dispositif de mesure selon la revendication 5,
caractérisé en ce que les roues (58) présentent un profil sensiblement tronconique, une collerette crantée (88) étant prévue au niveau de la grande base du tronc de cône. - Dispositif de mesure selon l'une quelconque des revendications 4 à 6, caractérisé en ce que les moyens de mesure de la position angulaire de la tête rotative sont constitués par un codeur (69) coopérant avec un moteur d'entraínement (76) en rotation de la tête (63).
- Dispositif de mesure selon l'une des revendications 4 à 7, caractérisé en ce que le mobile comprend un moyen de contrôle de sa position par rapport à la verticale, moyen constitué par un inclinomètre.
- Dispositif de mesure selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend une interface (3) reliant le mobile (1) et le calculateur (4), interface comprenant un touret enrouleur (5) d'un câble de liaison (42) du mobile au calculateur et un codeur de mesure (121) de la longueur du câble déroulé.
- Dispositif de mesure selon la revendication 9,
caractérisé en ce que le touret (5) comprend un tambour (114) muni d'une gorge hélicoïdale de réception du câble (42). - Dispositif de mesure selon la revendication 10, caractérisé en ce que le codeur (121) est entraíné par le moto-réducteur (117) assurant la rotation du tambour.
- Dispositif de mesure selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un moyen de fixation (34, 38) de l'interface (3) permettant de positionner le mobile (1) au niveau de l'embouchure du tube (2).
- Dispositif de mesure selon la revendication 12, caractérisé en ce que l'interface (3) est constituée d'une platine de réception (32) du mobile munie à une extrémité du moyen de fixation (34, 38) sur le tube et à l'autre extrémité du touret (5).
- Dispositif de mesure selon l'une quelconque des revendications précédentes, caractérisé en ce que l'outillage endoscopique (1, 3, 5) est muni d'une caméra vidéo (73) permettant de réaliser des vues de la paroi du tube (2).
- Dispositif de mesure selon la revendication 14, caractérisé en ce que l'outillage endoscopique (1, 3, 5) comporte un moyen d'éclairage (74) stroboscopique du tube.
- Dispositif de mesure selon la revendication 14 ou 15, caractérisé en ce que les directions d'observations du module laser (75) et de la caméra vidéo (73) sont orthogonales.
- Dispositif de mesure selon l'une quelconque des revendications précédentes, caractérisé en ce que le mobile (1) est muni d'un lest d'équilibrage (72) minimisant l'effet gyroscopique induit par la rotation de la tête d'inspection.
- Procédé de mesure de l'usure d'un tube mettant en oeuvre un dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que :on réalise une mesure par laser de la distance de la paroi interne du tube suivant une acquisition point par point le long d'une hélice selon un premier pas déterminé d'une extrémité à l'autre du tube,on associe à chaque point de mesure ses coordonnées angulaires et axiales à l'aide de codeurs,on corrige les données de mesure de distance pour calculer des données de profondeur des défauts de la paroi interne.
- Procédé de mesure selon la revendication 18,
caractérisé en ce qu'on calcule la surface et/ou le volume de chaque défaut pour au moins une profondeur donnée. - Procédé de mesure selon la revendication 19,
caractérisé en ce qu'on calcule la surface et/ou le volume de chaque défaut pour au moins deux profondeurs données. - Procédé de mesure selon la revendication 20,
caractérisé en ce qu'on calcule la surface et/ou le volume de chaque défaut pour quatre profondeurs données. - Procédé de mesure selon une des revendications 18 à 21, caractérisé en ce qu'on définit au moins deux zones longitudinales du tube pour lesquelles on calcule les volumes et les surfaces globaux et moyens pour au moins une profondeur donnée.
- Procédé de mesure selon la revendication 22,
caractérisé en ce qu'on définit cinq zones longitudinales du tube. - Procédé de mesure selon une des revendications 18 à 23, caractérisé en ce qu'on compare les valeurs de surface et/ou de volumes de défauts maximums et moyens mesurés à des seuils et on en déduit la conformité du tube.
- Procédé de mesure selon une des revendications 18 à 24, caractérisé en ce que la correction des données de distance comporte au moins une étape d'élimination des informations considérées comme aberrantes car dépassant un seuil donné.
- Procédé de mesure selon une des revendications 18 à 25, caractérisé en ce que la correction des données de distance comprend une étape de détermination de l'excentricité de la mesure, étape comprenant un calcul du diamètre moyen du tube et l'application d'un algorithme de centrage radial permettant d'éliminer une composante sinusoïdale des données de distance pour chaque ligne de mesure.
- Procédé de mesure selon une des revendications 18 à 26, caractérisé en ce qu'on restitue une visualisation en trois dimensions de la développée de la surface du tube sur laquelle apparaissent les défauts avec leur forme et leur profondeur.
- Procédé de mesure selon une des revendications 18 à 27, caractérisé en ce qu'on réalise un enregistrement vidéo de la surface interne du tube suivant une acquisition le long d'une hélice ayant un deuxième pas déterminé et qui se déroule d'une extrémité à l'autre du tube.
- Procédé de mesure selon la revendication 28,
caractérisé en ce l'enregistrement vidéo est réalisé image par image, et en ce qu'il est synchronisé avec un éclairage stroboscopique, permettant d'associer à chaque image vidéo ses coordonnées angulaires et axiales mesurées à l'aide de codeurs. - Procédé de mesure selon une des revendications 28 ou 29, caractérisé en ce l'enregistrement vidéo est réalisé lors d'un trajet aller d'une embouchure du tube à l'autre et l'enregistrement laser lors du trajet retour.
- Application du procédé selon l'une quelconque des revendications 18 à 30 à la prédiction de la durée de vie du tube d'une arme, caractérisée en ce que :on établit au moins un profil de vie d'un type de tube sous la forme de courbes empiriques donnant le nombre de munitions d'un type donné qu'il est possible de tirer en fonction d'un volume donné d'usure et en fonction des types de munitions déjà tirées par ce tube,on associe le tube d'arme à analyser à ce profil de vie ou bien à un de ces profils de vie en fonction du nombre et du type de munitions effectivement tirées par ce tube,on mesure l'usure réelle du tube à examiner,on déduit de la valeur de cette usure mesurée et du profil de vie ainsi associé au tube le nombre de munitions d'un type donné qu'il est encore possible de tirer.
- Application selon la revendication 31, caractérisée en ce que le calculateur incorpore une base de données comprenant au moins un profil de vie sous la forme de courbes prédictives de la durée de vie du tube pour une munition donnée et en fonction de l'usure ainsi qu'un algorithme permettant le choix d'une des courbes en fonction de données de vie qui sont constituées par les nombres de munitions de chaque type déjà tirées par le tube à analyser, données de vie introduites au moyen d'une interface de saisie.
- Application selon une des revendications 31 ou 32, caractérisée en ce que la base de données incorpore au moins un profil de vie associé à l'usure globale du tube et des profils de vie associés à l'usure suivant au moins deux zones longitudinales du tube.
- Application selon la revendication 32, caractérisée en ce que l'algorithme de choix comprend le calcul d'un rapport R du nombre de munitions de références déjà tirées sur le nombre total des autres munitions déjà tirées.
- Application selon une des revendications 31 à 34, caractérisée en ce que la base de données des profils de vie comprend des courbes prédictives de la durée de vie du tube exprimée en nombre de munitions de références qu'il est possible de tirer en fonction de l'usure, le calculateur incorporant par ailleurs en mémoire au moins un coefficient de conversion multiplicatif permettant de convertir le nombre maximal de munitions de références qu'il est possible de tirer en un nombre maximal d'au moins un autre type de munition.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0111674 | 2001-09-10 | ||
FR0111674A FR2829572B1 (fr) | 2001-09-10 | 2001-09-10 | Dispositif et procede de determination de l'usure d'un tube, tel un tube d'une arme |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1291599A2 true EP1291599A2 (fr) | 2003-03-12 |
EP1291599A3 EP1291599A3 (fr) | 2003-03-26 |
EP1291599B1 EP1291599B1 (fr) | 2005-12-07 |
Family
ID=8867120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02292181A Expired - Lifetime EP1291599B1 (fr) | 2001-09-10 | 2002-09-05 | Dispositif et procédé de détermination de l'usure d'un tube, tel un tube d'une arme |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1291599B1 (fr) |
AT (1) | ATE312332T1 (fr) |
DE (1) | DE60207797T2 (fr) |
FR (1) | FR2829572B1 (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102162708A (zh) * | 2010-12-17 | 2011-08-24 | 中国人民解放军军械工程学院 | 火炮身管轴线定位装置 |
EP2957858A1 (fr) * | 2014-06-16 | 2015-12-23 | Ziemann & Urban GmbH | Procédé et dispositif de mesure destinés à vérifier un alésage cylindrique |
FR3098293A1 (fr) | 2019-07-04 | 2021-01-08 | Cta International | Dispositif de mesure de l’usure du tube d’une arme |
CN114322648A (zh) * | 2021-12-27 | 2022-04-12 | 西安昆仑工业(集团)有限责任公司 | 一种装甲装备火炮身管内窥探伤检测装置 |
CN115164640A (zh) * | 2022-07-18 | 2022-10-11 | 哈尔滨吉程自动化设备有限公司 | 筒内壁磨损检测装置及方法 |
CN115480012A (zh) * | 2022-09-22 | 2022-12-16 | 青岛菲优特检测有限公司 | 一种水产品中呋喃苯烯酸钠残留检测机构及方法 |
WO2024044985A1 (fr) * | 2022-08-30 | 2024-03-07 | 山东瑞美油气装备技术创新中心有限公司 | Procédé et dispositif de test |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011100101A1 (de) | 2011-04-29 | 2012-10-31 | Rheinmetall Waffe Munition Gmbh | Schusszähler |
CN104390514B (zh) * | 2014-10-14 | 2017-02-22 | 北京工业大学 | 一种火炮身管内窥检测装置 |
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DE3603914A1 (de) * | 1985-02-11 | 1986-08-14 | Sig Schweizerische Industrie-Gesellschaft, Neuhausen Am Rheinfall | Messkopf zur messung von zuegen in rohren |
JPS63225156A (ja) * | 1987-03-16 | 1988-09-20 | Toyo Seikan Kaisha Ltd | 容器内面検査方法 |
JPH04122839A (ja) * | 1990-09-14 | 1992-04-23 | Sumitomo Metal Ind Ltd | 表面検査方法 |
EP0547227A1 (fr) * | 1991-07-05 | 1993-06-23 | Kabushiki Kaisha Kobe Seiko Sho | Dispositif optique d'inspection de surface pour rouleau de laminoir |
DE4446235A1 (de) * | 1994-12-23 | 1996-06-27 | Mauser Werke Oberndorf Waffensysteme Gmbh | Meßgerät für ein Rohr, insbesondere Waffenrohr |
WO1997002480A1 (fr) * | 1995-06-30 | 1997-01-23 | The United States Of America, Represented By The Secretary Of The Air Force | Profileur electro-optique sans contact de la section interne d'un tube |
US6249007B1 (en) * | 1997-09-12 | 2001-06-19 | Thames Water Utilities Limited | Non-contact distance measuring apparatus |
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2001
- 2001-09-10 FR FR0111674A patent/FR2829572B1/fr not_active Expired - Fee Related
-
2002
- 2002-09-05 AT AT02292181T patent/ATE312332T1/de not_active IP Right Cessation
- 2002-09-05 EP EP02292181A patent/EP1291599B1/fr not_active Expired - Lifetime
- 2002-09-05 DE DE60207797T patent/DE60207797T2/de not_active Expired - Lifetime
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DE3603914A1 (de) * | 1985-02-11 | 1986-08-14 | Sig Schweizerische Industrie-Gesellschaft, Neuhausen Am Rheinfall | Messkopf zur messung von zuegen in rohren |
JPS63225156A (ja) * | 1987-03-16 | 1988-09-20 | Toyo Seikan Kaisha Ltd | 容器内面検査方法 |
JPH04122839A (ja) * | 1990-09-14 | 1992-04-23 | Sumitomo Metal Ind Ltd | 表面検査方法 |
EP0547227A1 (fr) * | 1991-07-05 | 1993-06-23 | Kabushiki Kaisha Kobe Seiko Sho | Dispositif optique d'inspection de surface pour rouleau de laminoir |
DE4446235A1 (de) * | 1994-12-23 | 1996-06-27 | Mauser Werke Oberndorf Waffensysteme Gmbh | Meßgerät für ein Rohr, insbesondere Waffenrohr |
WO1997002480A1 (fr) * | 1995-06-30 | 1997-01-23 | The United States Of America, Represented By The Secretary Of The Air Force | Profileur electro-optique sans contact de la section interne d'un tube |
US6249007B1 (en) * | 1997-09-12 | 2001-06-19 | Thames Water Utilities Limited | Non-contact distance measuring apparatus |
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PATENT ABSTRACTS OF JAPAN vol. 016, no. 378 (P-1402) 13 Août 1992 & JP 04 122 839 A (SUMITOMO METAL IND LTD) 23 Avril 1992 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102162708A (zh) * | 2010-12-17 | 2011-08-24 | 中国人民解放军军械工程学院 | 火炮身管轴线定位装置 |
CN102162708B (zh) * | 2010-12-17 | 2013-09-25 | 中国人民解放军军械工程学院 | 火炮身管轴线定位装置 |
EP2957858A1 (fr) * | 2014-06-16 | 2015-12-23 | Ziemann & Urban GmbH | Procédé et dispositif de mesure destinés à vérifier un alésage cylindrique |
FR3098293A1 (fr) | 2019-07-04 | 2021-01-08 | Cta International | Dispositif de mesure de l’usure du tube d’une arme |
CN114322648A (zh) * | 2021-12-27 | 2022-04-12 | 西安昆仑工业(集团)有限责任公司 | 一种装甲装备火炮身管内窥探伤检测装置 |
CN114322648B (zh) * | 2021-12-27 | 2024-03-29 | 西安昆仑工业(集团)有限责任公司 | 一种装甲装备火炮身管内窥探伤检测装置 |
CN115164640A (zh) * | 2022-07-18 | 2022-10-11 | 哈尔滨吉程自动化设备有限公司 | 筒内壁磨损检测装置及方法 |
CN115164640B (zh) * | 2022-07-18 | 2023-10-20 | 哈尔滨吉程自动化设备有限公司 | 筒内壁磨损检测装置及方法 |
WO2024044985A1 (fr) * | 2022-08-30 | 2024-03-07 | 山东瑞美油气装备技术创新中心有限公司 | Procédé et dispositif de test |
CN115480012A (zh) * | 2022-09-22 | 2022-12-16 | 青岛菲优特检测有限公司 | 一种水产品中呋喃苯烯酸钠残留检测机构及方法 |
Also Published As
Publication number | Publication date |
---|---|
FR2829572B1 (fr) | 2005-03-25 |
ATE312332T1 (de) | 2005-12-15 |
EP1291599A3 (fr) | 2003-03-26 |
EP1291599B1 (fr) | 2005-12-07 |
DE60207797T2 (de) | 2006-07-06 |
FR2829572A1 (fr) | 2003-03-14 |
DE60207797D1 (de) | 2006-01-12 |
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