EP0554163B1 - Blasting machine - Google Patents

Blasting machine Download PDF

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Publication number
EP0554163B1
EP0554163B1 EP19930400186 EP93400186A EP0554163B1 EP 0554163 B1 EP0554163 B1 EP 0554163B1 EP 19930400186 EP19930400186 EP 19930400186 EP 93400186 A EP93400186 A EP 93400186A EP 0554163 B1 EP0554163 B1 EP 0554163B1
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EP
European Patent Office
Prior art keywords
nozzle
pinion
blasting machine
rocker bar
hollow shaft
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.)
Expired - Lifetime
Application number
EP19930400186
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German (de)
French (fr)
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EP0554163A1 (en
Inventor
Bernard Thome
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wheelabrator Sisson Lehmann
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Wheelabrator Sisson Lehmann
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Publication of EP0554163A1 publication Critical patent/EP0554163A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B24C9/003—Removing abrasive powder out of the blasting machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts

Definitions

  • the present invention relates to a shot blasting machine according to the preamble of claim 1.
  • a shot blasting machine is known, for example, from SU-A-905 035.
  • the invention relates to machines which comprise a chassis supporting a carriage movable in two perpendicular directions on which is mounted a blasting nozzle, the latter being connected by flexible hoses to a source of pressurized fluid and being carried by a vertically movable support, said nozzle being orientable.
  • the nozzle is placed in a cabin in which is mounted a support on which the object to be shot blasted is fixed.
  • the nozzle can be controlled so that the entire surface of a part is blasted.
  • One of the aims of the present invention is to remedy this drawback.
  • the shot blasting machine is of the type comprising a cabin intended to receive the object to be shot blasted, a blasting unit with a compressor for sending, under pressure, shot through a conduit, to a nozzle. projection housed in the cabin, the machine being characterized in that the nozzle is carried by one of the ends of a link, the other end of which is secured to a horizontal axis connected by a kinematic link to a pinion wedged in the vicinity of the lower end of a hollow axis, the upper end of which comprises a crown engaged with a pinion of a first electric motor, on said hollow axis, in the vicinity of the crown, being rotatably mounted a second engaged crown with a pinion of a second electric motor, said second ring being secured to a housing guided by bearings on the hollow shaft, said housing being extended by a second housing body comprising guide elements for the kinematic connection and arranged so as to be able to rotate around the pinion of the lower end of the hollow axis
  • the horizontal axis, one end of which is integral with one of the ends of the rod comprises, at its other end, a corner pinion engaged with a corner pinion wedged on an axis guided by bearings in the second housing body and on which is fixed a pinion engaged with the pinion of the lower end of the hollow axis.
  • the nozzle is integral with one end of a flexible pipe connected to the end of a rigid pipe crossing the hollow axis and connected by a rotating joint to the supply of abrasives.
  • the machine includes means for cutting off the power to the electric motors so that the travel of the link cannot exceed angular positions greater than 180 °. Thanks to this arrangement, any possibility of damage to the machine is avoided.
  • the means for cutting off the power to the electric motors, so that the travel of the link cannot exceed angular positions greater than 180 ° comprise two pinions in engagement, one with one of the crowns and the other with the other, one of the pinions being connected to a keyed sliding screw and the other to a nut, the screw carrying a member capable of cooperating with members for controlling the stopping of the motors when the position rod angle exceeds determined thresholds.
  • Means may be provided for detecting an angular reference position of the link.
  • the machine comprises a programmable control member inserted on the circuit of the electric motors to control the position of the nozzle and the angular position of the link.
  • FIG. 1 there is shown schematically a shot blasting machine, according to the invention, this machine comprising a frame 1 comprising a cabin 2 in which is mounted a carriage 3 guided on rails 4 and provided with a brake 5 for the 'immobilize on said rails.
  • the carriage 3 comprises a plate 6 intended to receive the part to be shot blasted.
  • shot means materials in the form of granules having a variable hardness depending on the work to be performed.
  • the nozzle 7 is connected by a tubular element 9 to a shot blasting assembly 10 comprising a compressor, a filter and a shot tank.
  • a shot blasting assembly 10 comprising a compressor, a filter and a shot tank.
  • an endless screw 12 is provided to recover the shot used and which, by an elevator 11, is brought to a purifier 13 where the grains no longer having the desired particle size are eliminated, the others being recycled.
  • the cabin 2 has at its upper part two guide units 17 mounted on a chassis 16 on which an assembly 40 is guided.
  • An electric motor 18 comprising on its output shaft a pinion 19 drives, by a toothed belt 20, a pinion 21 wedged at one end of a ball screw 22 which cooperates with a nut 23 integral with the assembly 40.
  • the guide unit 17 supports a body 25 in which stands a tubular element 41 with which cooperate two rollers 26 carried by a nut 28 comprising a nut 29 for a ball screw 31, on which is stuck a pinion 32 driven by a toothed belt passing over a pinion 34 wedged on the output shaft of an electric motor 35 (see FIGS. 5 and 5A).
  • the nut 28 has a flange 39 which is traversed by a sleeve 27 fixed in said flange.
  • the control assembly 40 of the nozzle 7 (see fig. 3) is thus supported by the nut 28.
  • bearings 45 and 46 Between the hollow axis 43 and the housing 42 are inserted bearings 45 and 46, said housing being secured to a toothed ring 47 driven by a pinion 48 wedged on the output shaft of an electric motor 49 fixed on a plate 50.
  • the plate 50 is fixed and a bearing 51 is inserted between the latter and the housing 42.
  • the plate 50 is integral with the sleeve 27 and a bearing 52 is inserted between said housing 42 and a ring 38 integral with said sleeve 27.
  • the entire housing 42 can rotate around the hollow axis 43.
  • the housing 42 is extended laterally by a second housing body 56 which extends parallel to the housing 42 and in which is guided, in bearings 57, 58, 59 and 60, an axis 61 on which is wedged, at the end upper, a pinion 62 in engagement with a pinion 63 fixed on the hollow axis 43, while at its lower end is wedged a corner pinion 65 engaged with a corner pinion 66 wedged on an axis 67 guided in bearings 68 and 69 (see FIG. 3A).
  • the nozzle 7 is secured to a flexible pipe 80 which is fixed to the corresponding end of a rigid tube 83 by a nut 81 screwed onto a screw 82 secured to the housing 56.
  • the rigid tube 83 crosses the hollow axis 43 and is connected by a rotary joint 84 to the peening assembly 10.
  • a joint 86 is inserted between the flexible pipe 80 and the corresponding end of the rigid tube 83.
  • the pinion 48 drives the crown 47 and the housing 42.
  • the second housing body 56 is integral with the housing 42, said second body 56 rotates around the hollow axis 43, the pinion 62 rotates on pinion 63 and axis 67 is driven by pinions 65 and 66 so that the link 71 pivots in one direction or the other according to the direction of rotation of the motor 49.
  • the link 71 carrying the nozzle 7 is also rotated.
  • the pinion 74 drives the crown 73 which drives the hollow pin 43, which drives the pinion 63 which cooperates with the pinion 62, the axis 61 and the pinions 65 and 66 modifying the angular position of the connecting rod 71.
  • a safety system is provided, shown in detail in FIG. 4.
  • the crown 73 meshes with a pinion 90 wedged on an axis 91 guided in a ring 92 and held by two shoulders 93 and 94.
  • the axis 91 carries a lateral key 96 which cooperates with a groove 97 of a hollow screw 98 whose threads 99 are screwed into the thread 100 of a nut 101 guided in a ring 102 housed in a bore 103 of the plate 50.
  • the nut 101 is integral with a ring 104 mounted on the ring 92 and on which a pinion 105 is wedged in engagement with the crown 47.
  • the hollow screw 98 is terminated by a flange 110 and there are provided on a support 111 organs 106 and 107 such as limit switches, proximity switches or the like in order to control the stopping of the motors 49 and 75 when the nozzle 7 arrives in the two horizontal extreme positions.
  • a detector 108 can be provided on a support 112 corresponding to the vertical position of the nozzle 7 and constituting a reference position.
  • Figure 6 schematically shows the operation of the nozzle control assembly.
  • the motors 49 and 75 are connected to a programmable control member 111 which, from a reference position, for example, the vertical position of the nozzle, makes it possible to control, from a on the one hand, the motor 49 to modify the position of the nozzle 7 and, on the other hand, simultaneously the motor 75 in order to modify the angular position of the link 71 carrying the nozzle 7.
  • a reference position for example, the vertical position of the nozzle
  • the motor 18 makes it possible to control the movement of the mobile assembly 40 and thus to move the nozzle 7 horizontally in one direction and in the other, while the motor 35 makes it possible to adjust the height of said nozzle 7.
  • the motors 49 and 75 are controlled in order to control, by the motor 49, the rotation of the nozzle 7, the motor 75 being controlled simultaneously so, by the crown 73 and the pinions 63 and 62, to make up for the modification of the angular position of the rod 71 generated by the rotation of the pinion 62 around the pinion 63.
  • the motor 75 can be controlled independently so that the rod 71 is brought into the angular position suitable for the work to be done.

Description

La présente invention vise une machine à grenailler selon le préambule de la revendication 1. Une telle machine est connue, par exemple, par SU-A-905 035.The present invention relates to a shot blasting machine according to the preamble of claim 1. Such a machine is known, for example, from SU-A-905 035.

L'invention se rapporte à des machines qui comprennent un châssis supportant un chariot mobile dans deux directions perpendiculaires sur lequel est montée une buse de grenaillage, celle-ci étant reliée par des tuyaux souples à une source de fluide sous pression et étant portée par un support mobile verticalement, ladite buse étant orientable.The invention relates to machines which comprise a chassis supporting a carriage movable in two perpendicular directions on which is mounted a blasting nozzle, the latter being connected by flexible hoses to a source of pressurized fluid and being carried by a vertically movable support, said nozzle being orientable.

La buse est placée dans une cabine dans laquelle est monté un support sur lequel on fixe l'objet à grenailler.The nozzle is placed in a cabin in which is mounted a support on which the object to be shot blasted is fixed.

Ainsi, la buse peut être commandée afin que toute la surface d'une pièce soit grenaillée.Thus, the nozzle can be controlled so that the entire surface of a part is blasted.

Un des inconvénients d'une telle machine est que les différents éléments adjacents à la buse sont encombrants et qu'on ne peut envisager de grenailler l'intérieur de petites pièces.One of the drawbacks of such a machine is that the various elements adjacent to the nozzle are bulky and that one cannot envisage peening the interior of small parts.

La technique antérieure connaît une machine à grenailler dont la buse est portée par un support coulissant, ledit support étant lui-même monté tournant. Le brevet Russe n° 905035 décrit une telle machine.The prior art knows a shot blasting machine, the nozzle of which is carried by a sliding support, said support itself being mounted so that it can rotate. Russian patent No. 905035 describes such a machine.

Une telle machine est encombrante et ne permet pas d'effectuer certains travaux comme le grenaillage des surfaces internes de très petites pièces.Such a machine is bulky and does not make it possible to carry out certain works such as the blasting of the internal surfaces of very small parts.

L'un des buts de la présente invention est de remédier à cet inconvénient.One of the aims of the present invention is to remedy this drawback.

La machine à grenailler, selon l'invention, est du type comportant une cabine destinée à recevoir l'objet à grenailler, un ensemble de grenaillage avec un compresseur pour envoyer, sous pression, de la grenaille à travers un conduit, à une buse de projection logée dans la cabine, la machine étant caractérisée en ce que la buse est portée par l'une des extrémités d'une biellette dont l'autre extrémité est solidaire d'un axe horizontal relié par une liaison cinématique à un pignon calé au voisinage de l'extrémité inférieure d'un axe creux, dont l'extrémité supérieure comporte une couronne en prise avec un pignon d'un premier moteur électrique, sur ledit axe creux, au voisinage de la couronne, étant montée tournante une seconde couronne en prise avec un pignon d'un second moteur électrique, ladite seconde couronne étant solidaire d'un boîtier guidé par des paliers sur l'arbre creux, ledit boîtier étant prolongé par un second corps de boîtier comportant des éléments de guidage pour la liaison cinématique et agencé de manière à pouvoir tourner autour du pignon de l'extrémité inférieure de l'axe creux de manière à commander la rotation de la buse, tandis que le premier moteur électrique commande la modification de la position angulaire de la biellette, la conduite d'alimentation de la buse traversant l'axe creux.The shot blasting machine according to the invention is of the type comprising a cabin intended to receive the object to be shot blasted, a blasting unit with a compressor for sending, under pressure, shot through a conduit, to a nozzle. projection housed in the cabin, the machine being characterized in that the nozzle is carried by one of the ends of a link, the other end of which is secured to a horizontal axis connected by a kinematic link to a pinion wedged in the vicinity of the lower end of a hollow axis, the upper end of which comprises a crown engaged with a pinion of a first electric motor, on said hollow axis, in the vicinity of the crown, being rotatably mounted a second engaged crown with a pinion of a second electric motor, said second ring being secured to a housing guided by bearings on the hollow shaft, said housing being extended by a second housing body comprising guide elements for the kinematic connection and arranged so as to be able to rotate around the pinion of the lower end of the hollow axis so as to control the rotation of the nozzle, while the first electric motor controls the modification of the position angle of the link, the nozzle supply line crossing the hollow axis.

Grâce à cette disposition, on réalise une machine dans laquelle tous les éléments adjacents à la buse sont très compacts de sorte qu'on peut effectuer des grenaillages à l'intérieur de petits alésages.Thanks to this arrangement, a machine is produced in which all the elements adjacent to the nozzle are very compact so that shot blasting can be carried out inside small bores.

Suivant une caractéristique constructive, l'axe horizontal dont une extrémité est solidaire de l'une des extrémités de la biellette comporte, à son autre extrémité, un pignon d'angle en prise avec un pignon d'angle calé sur un axe guidé par des paliers dans le second corps de boîtier et sur lequel est calé un pignon en prise avec le pignon de l'extrémité inférieure de l'axe creux.According to a constructive characteristic, the horizontal axis, one end of which is integral with one of the ends of the rod comprises, at its other end, a corner pinion engaged with a corner pinion wedged on an axis guided by bearings in the second housing body and on which is fixed a pinion engaged with the pinion of the lower end of the hollow axis.

La buse est solidaire de l'une des extrémités d'un tuyau souple relié à l'extrémité d'une conduite rigide traversant l'axe creux et reliée par un joint tournant à l'alimentation d'abrasifs.The nozzle is integral with one end of a flexible pipe connected to the end of a rigid pipe crossing the hollow axis and connected by a rotating joint to the supply of abrasives.

La machine comporte des moyens pour couper l'alimentation des moteurs électriques afin que le débattement de la biellette ne puisse dépasser des positions angulaires supérieures à 180°. Grâce à cette disposition, on évite toute possibilité de détérioration de la machine.The machine includes means for cutting off the power to the electric motors so that the travel of the link cannot exceed angular positions greater than 180 °. Thanks to this arrangement, any possibility of damage to the machine is avoided.

Suivant une caractéristique constructive, les moyens pour couper l'alimentation des moteurs électriques, afin que le débattement de la biellette ne puisse dépasser des positions angulaires supérieures à 180°, comprennent deux pignons en prise, l'un avec l'une des couronnes et l'autre avec l'autre, l'un des pignons étant relié à une vis clavetée coulissante et l'autre à un écrou, la vis portant un organe susceptible de coopérer avec des organes de commande de l'arrêt des moteurs lorsque la position angulaire de la biellette dépasse des seuils déterminés.According to a constructive characteristic, the means for cutting off the power to the electric motors, so that the travel of the link cannot exceed angular positions greater than 180 °, comprise two pinions in engagement, one with one of the crowns and the other with the other, one of the pinions being connected to a keyed sliding screw and the other to a nut, the screw carrying a member capable of cooperating with members for controlling the stopping of the motors when the position rod angle exceeds determined thresholds.

Il peut être prévu des moyens de détection d'une position angulaire de référence de la biellette.Means may be provided for detecting an angular reference position of the link.

De préférence, la machine comporte un organe de commande programmable inséré sur le circuit des moteurs électriques pour commander la position de la buse et la position angulaire de la biellette.Preferably, the machine comprises a programmable control member inserted on the circuit of the electric motors to control the position of the nozzle and the angular position of the link.

Enfin, on peut prévoir des moyens pour commander un déplacement horizontal de la buse et des moyens pour commander un déplacement vertical de la buse.Finally, it is possible to provide means for controlling a horizontal movement of the nozzle and means for controlling a vertical movement of the nozzle.

L'invention va maintenant être décrite avec plus de détails en se référant à un mode de réalisation particulier donné à titre d'exemple seulement et représenté aux dessins annexés, dans lesquels :

  • Figure 1 est une vue en élévation schématique d'une machine à grenailler, selon l'invention.
  • Figure 2 est une vue en plan de l'ensemble de commande de la buse.
  • Figure 3 et 3A sont des vues en coupe axiale suivant la ligne 3-3 de la figure 2.
  • Figure 4 est une vue en coupe suivant la ligne 4-4 de la figure 2.
  • Figure 5 est une vue en élévation montrant l'ensemble portant la buse.
  • Figure 5A est une vue suivant la ligne 5A de la figure 5.
  • Figure 6 est un schéma explicatif du fonctionnement.
The invention will now be described in more detail with reference to a particular embodiment given by way of example only and shown in the accompanying drawings, in which:
  • Figure 1 is a schematic elevational view of a shot blasting machine, according to the invention.
  • Figure 2 is a plan view of the nozzle control assembly.
  • Figure 3 and 3A are views in axial section along line 3-3 of Figure 2.
  • Figure 4 is a sectional view along line 4-4 of Figure 2.
  • Figure 5 is an elevational view showing the assembly carrying the nozzle.
  • Figure 5A is a view along line 5A in Figure 5.
  • Figure 6 is an explanatory diagram of the operation.

A la figure 1, on a représenté schématiquement une machine à grenailler, selon l'invention, cette machine comprenant un bâti 1 comportant une cabine 2 dans laquelle est monté un chariot 3 guidé sur des rails 4 et pourvu d'un frein 5 pour l'immobiliser sur lesdits rails. Le chariot 3 comporte un plateau 6 destiné à recevoir la pièce à grenailler.In Figure 1, there is shown schematically a shot blasting machine, according to the invention, this machine comprising a frame 1 comprising a cabin 2 in which is mounted a carriage 3 guided on rails 4 and provided with a brake 5 for the 'immobilize on said rails. The carriage 3 comprises a plate 6 intended to receive the part to be shot blasted.

Dans la cabine 2 s'étend une buse 7 de projection de grenailles. Par grenailles, on entend des matériaux sous forme de granules ayant une dureté variable suivant le travail à effectuer.In the cabin 2 extends a nozzle 7 for projecting shots. By shot means materials in the form of granules having a variable hardness depending on the work to be performed.

La buse 7 est reliée par un élément tubulaire 9 à un ensemble de grenaillage 10 comprenant un compresseur, un filtre et un réservoir de grenailles. Dans le fond de la cabine, il est prévu une vis sans fin 12 pour récupérer la grenaille utilisée et qui, par un élévateur 11, est amenée à un épurateur 13 où les grains n'ayant plus la granulométrie désirée sont éliminés, les autres étant recyclés.The nozzle 7 is connected by a tubular element 9 to a shot blasting assembly 10 comprising a compressor, a filter and a shot tank. At the bottom of the cabin, an endless screw 12 is provided to recover the shot used and which, by an elevator 11, is brought to a purifier 13 where the grains no longer having the desired particle size are eliminated, the others being recycled.

La cabine 2 comporte à sa partie supérieure deux unités de guidage 17 montées sur un châssis 16 sur lesquels est guidé un ensemble 40.The cabin 2 has at its upper part two guide units 17 mounted on a chassis 16 on which an assembly 40 is guided.

Un moteur électrique 18 comportant sur son arbre de sortie un pignon 19 entraîne, par une courroie crantée 20, un pignon 21 calé à une extrémité d'une vis à billes 22 qui coopère avec un écrou 23 solidaire à l'ensemble 40.An electric motor 18 comprising on its output shaft a pinion 19 drives, by a toothed belt 20, a pinion 21 wedged at one end of a ball screw 22 which cooperates with a nut 23 integral with the assembly 40.

L'unité de guidage 17 supporte un corps 25 dans lequel s'érige un élément tubulaire 41 avec laquelle coopèrent deux galets 26 portés par une noix 28 comportant un écrou 29 pour une vis à billes 31, sur laquelle est collée un pignon 32 entraînée par une courroie crantée passant sur un pignon 34 calée sur l'arbre de sortie d'un moteur électrique 35 (voir figures 5 et 5A). La noix 28 comporte une bride 39 qui est traversée par un manchon 27 fixé dans ladite bride. L'ensemble de commande 40 de la buse 7 (voir fig. 3) est ainsi supporté par la noix 28.The guide unit 17 supports a body 25 in which stands a tubular element 41 with which cooperate two rollers 26 carried by a nut 28 comprising a nut 29 for a ball screw 31, on which is stuck a pinion 32 driven by a toothed belt passing over a pinion 34 wedged on the output shaft of an electric motor 35 (see FIGS. 5 and 5A). The nut 28 has a flange 39 which is traversed by a sleeve 27 fixed in said flange. The control assembly 40 of the nozzle 7 (see fig. 3) is thus supported by the nut 28.

Entre l'axe creux 43 et le boîtier 42 sont insérés des paliers 45 et 46, ledit boîtier étant solidaire d'une couronne dentée 47 entraînée par un pignon 48 calé sur l'arbre de sortie d'un moteur électrique 49 fixé sur une platine 50.Between the hollow axis 43 and the housing 42 are inserted bearings 45 and 46, said housing being secured to a toothed ring 47 driven by a pinion 48 wedged on the output shaft of an electric motor 49 fixed on a plate 50.

La platine 50 est fixe et un palier 51 est inséré entre celle-ci et le boîtier 42. La platine 50 est solidaire du manchon 27 et un palier 52 est inséré entre ledit boîtier 42 et une bague 38 solidaire dudit manchon 27.The plate 50 is fixed and a bearing 51 is inserted between the latter and the housing 42. The plate 50 is integral with the sleeve 27 and a bearing 52 is inserted between said housing 42 and a ring 38 integral with said sleeve 27.

Ainsi, lorsque le moteur 49 entraîne le pignon 48, l'ensemble du boîtier 42 peut tourner autour de l'axe creux 43.Thus, when the motor 49 drives the pinion 48, the entire housing 42 can rotate around the hollow axis 43.

Le boîtier 42 est prolongé latéralement par un second corps de boîtier 56 qui s'étend parallèlement au boîtier 42 et dans lequel est guidé, dans des paliers 57, 58, 59 et 60, un axe 61 sur lequel est calé, à l'extrémité supérieure, un pignon 62 en prise avec un pignon 63 calé sur l'axe creux 43, tandis qu'à son extrémité inférieure est calé un pignon d'angle 65 en prise avec un pignon d'angle 66 calé sur un axe 67 guidé dans des paliers 68 et 69 (voir figure 3A).The housing 42 is extended laterally by a second housing body 56 which extends parallel to the housing 42 and in which is guided, in bearings 57, 58, 59 and 60, an axis 61 on which is wedged, at the end upper, a pinion 62 in engagement with a pinion 63 fixed on the hollow axis 43, while at its lower end is wedged a corner pinion 65 engaged with a corner pinion 66 wedged on an axis 67 guided in bearings 68 and 69 (see FIG. 3A).

A l'extrémité de l'axe 67 opposée à celle pourvue du pignon d'angle 66 est fixée, par des vis 70, une biellette 71 dont l'extrémité libre supporte la buse 7.At the end of the axis 67 opposite to that provided with the angle pinion 66 is fixed, by screws 70, a rod 71 whose free end supports the nozzle 7.

Sur l'axe creux 43 est calée une couronne 73 qui coopère avec un pignon 74 calé sur l'arbre de sortie d'un moteur 75 fixé sur la platine 50 (figure 3).On the hollow axis 43 is wedged a crown 73 which cooperates with a pinion 74 wedged on the output shaft of a motor 75 fixed on the plate 50 (Figure 3).

La buse 7 est solidaire d'un tuyau souple 80 qui est fixé à l'extrémité correspondante d'un tube rigide 83 par un écrou 81 se vissant sur une vis 82 solidaire du boîtier 56. Le tube rigide 83 traverse l'axe creux 43 et est relié par un joint tournant 84 à l'ensemble de grenaillage 10. Un joint 86 est inséré entre le tuyau souple 80 et l'extrémité correspondante du tube rigide 83.The nozzle 7 is secured to a flexible pipe 80 which is fixed to the corresponding end of a rigid tube 83 by a nut 81 screwed onto a screw 82 secured to the housing 56. The rigid tube 83 crosses the hollow axis 43 and is connected by a rotary joint 84 to the peening assembly 10. A joint 86 is inserted between the flexible pipe 80 and the corresponding end of the rigid tube 83.

On conçoit que lorsqu'on alimente le moteur 49, le pignon 48 entraîne la couronne 47 et le boîtier 42. Comme le second corps de boîtier 56 est solidaire du boîtier 42, ledit second corps 56 tourne autour de l'axe creux 43, le pignon 62 tourne sur le pignon 63 et l'axe 67 se trouve entraîné par les pignons 65 et 66 de sorte que la biellette 71 pivote dans un sens ou dans l'autre suivant le sens de rotation du moteur 49. La biellette 71 portant la buse 7 est aussi entraînée en rotation.It is understood that when the motor 49 is powered, the pinion 48 drives the crown 47 and the housing 42. As the second housing body 56 is integral with the housing 42, said second body 56 rotates around the hollow axis 43, the pinion 62 rotates on pinion 63 and axis 67 is driven by pinions 65 and 66 so that the link 71 pivots in one direction or the other according to the direction of rotation of the motor 49. The link 71 carrying the nozzle 7 is also rotated.

Si on alimente le moteur 75, le pignon 74 entraîne la couronne 73 qui entraîne l'axe creux 43, qui entraîne le pignon 63 qui coopère avec le pignon 62, l'axe 61 et les pignons 65 et 66 modifiant la position angulaire de la biellette 71.If the motor 75 is powered, the pinion 74 drives the crown 73 which drives the hollow pin 43, which drives the pinion 63 which cooperates with the pinion 62, the axis 61 and the pinions 65 and 66 modifying the angular position of the connecting rod 71.

Comme la biellette 71 ne peut être déplacée angulairement que sur 180°, c'est-à-dire depuis une position horizontale de la buse vers une position horizontale opposée, il est prévu un système de sécurité représenté en détail à la figure 4.As the connecting rod 71 can only be angularly moved over 180 °, that is to say from a horizontal position of the nozzle towards an opposite horizontal position, a safety system is provided, shown in detail in FIG. 4.

La couronne 73 engrène avec un pignon 90 calé sur un axe 91 guidé dans une bague 92 et maintenue par deux épaulements 93 et 94. L'axe 91 porte une clavette latérale 96 qui coopère avec une rainure 97 d'une vis creuse 98 dont les filets 99 se vissent dans le taraudage 100 d'un écrou 101 guidé dans une bague 102 logée dans un alésage 103 de la platine 50.The crown 73 meshes with a pinion 90 wedged on an axis 91 guided in a ring 92 and held by two shoulders 93 and 94. The axis 91 carries a lateral key 96 which cooperates with a groove 97 of a hollow screw 98 whose threads 99 are screwed into the thread 100 of a nut 101 guided in a ring 102 housed in a bore 103 of the plate 50.

L'écrou 101 est solidaire d'une bague 104 montée sur la bague 92 et sur laquelle est calé un pignon 105 en prise avec la couronne 47.The nut 101 is integral with a ring 104 mounted on the ring 92 and on which a pinion 105 is wedged in engagement with the crown 47.

La vis creuse 98 est terminée par une collerette 110 et il est prévu sur un support 111 des organes 106 et 107 tels que des interrupteurs de fin de course, des détecteurs de proximité ou autres afin de commander l'arrêt des moteurs 49 et 75 lorsque la buse 7 arrive dans les deux positions extrêmes horizontales.The hollow screw 98 is terminated by a flange 110 and there are provided on a support 111 organs 106 and 107 such as limit switches, proximity switches or the like in order to control the stopping of the motors 49 and 75 when the nozzle 7 arrives in the two horizontal extreme positions.

Il peut être prévu sur un support 112 un détecteur 108 correspondant à la position verticale de la buse 7 et constituant une position de référence.A detector 108 can be provided on a support 112 corresponding to the vertical position of the nozzle 7 and constituting a reference position.

La figure 6 montre schématiquement le fonctionnement de l'ensemble de commande de la buse.Figure 6 schematically shows the operation of the nozzle control assembly.

Comme on le voit sur cette figure, les moteurs 49 et 75 sont reliés à un organe de commande programmable 111 qui, à partir d'une position de référence, par exemple, la position verticale de la buse, permet de commander, d'une part, le moteur 49 pour modifier la position de la buse 7 et, d'autre part, simultanément le moteur 75 afin de modifier la position angulaire de la biellette 71 portant la buse 7. Ainsi, on peut rattraper la modification de la position angulaire de la biellette 71 engendrée par la rotation du pignon 48 du moteur 49 tout en modifiant éventuellement par le moteur 75 la position angulaire de ladite biellette 71.As can be seen in this figure, the motors 49 and 75 are connected to a programmable control member 111 which, from a reference position, for example, the vertical position of the nozzle, makes it possible to control, from a on the one hand, the motor 49 to modify the position of the nozzle 7 and, on the other hand, simultaneously the motor 75 in order to modify the angular position of the link 71 carrying the nozzle 7. Thus, the modification of the angular position can be caught up of the link 71 generated by the rotation of the pinion 48 of the motor 49 while possibly modifying by the motor 75 the angular position of said link 71.

Le moteur 18 permet de commander le déplacement de l'ensemble mobile 40 et ainsi de déplacer horizontalement dans un sens et dans l'autre la buse 7, tandis que le moteur 35 permet de régler la hauteur de ladite buse 7.The motor 18 makes it possible to control the movement of the mobile assembly 40 and thus to move the nozzle 7 horizontally in one direction and in the other, while the motor 35 makes it possible to adjust the height of said nozzle 7.

A partir de l'organe de commande programmable 111, les moteurs 49 et 75 sont commandés afin de commander, par le moteur 49, la rotation de la buse 7, le moteur 75 étant commandé simultanément afin, par la couronne 73 et les pignons 63 et 62, de rattraper la modification de la position angulaire de la biellette 71 engendrée par la rotation du pignon 62 autour du pignon 63. Bien entendu, le moteur 75 peut être commandé indépendamment afin que la biellette 71 soit amenée dans la position angulaire convenable pour le travail à effectuer.From the programmable controller 111, the motors 49 and 75 are controlled in order to control, by the motor 49, the rotation of the nozzle 7, the motor 75 being controlled simultaneously so, by the crown 73 and the pinions 63 and 62, to make up for the modification of the angular position of the rod 71 generated by the rotation of the pinion 62 around the pinion 63. Of course, the motor 75 can be controlled independently so that the rod 71 is brought into the angular position suitable for the work to be done.

On conçoit que, compte tenu du montage particulier de la buse 7 et du fait que l'alimentation de celle-ci traverse l'axe 43, on réalise un ensemble compact qui permet à la buse d'accéder à des alésages présentant un petit diamètre interne.It is understood that, taking into account the particular mounting of the nozzle 7 and the fact that the supply of the latter crosses the axis 43, a compact assembly is produced which allows the nozzle to access bores having a small diameter internal.

Bien entendu, l'invention n'est pas limitée au mode de réalisation qui vient d'être décrit et représenté. On pourra y apporter de nombreuses modifications de détail sans sortir pour cela du cadre de l'invention qui est definie dans les revendications.Of course, the invention is not limited to the embodiment which has just been described and shown. Many detailed modifications can be made without departing from the scope of the invention which is defined in the claims.

Claims (9)

  1. A blasting machine of the type comprising a cabin intended to receive the object to be blasted, a blasting unit with a compressor to send the shot under pressure through a pipe to a nozzle (7) housed in the cabin,
    characterised in that the nozzle (7) is borne by one of the ends of a rocker bar (71), the other end of which is integral with a horizontal shaft (67) connected by a kinematic connection (61, 62) to a pinion (63) fixed in the vicinity of the lower end of a hollow shaft (43), the upper end of which comprises a collar (73) meshing with a pinion (74) of a first electric motor (75), a second collar (47), meshing with a pinion (48) of a second electric motor (49), being rotatingly mounted on the said hollow shaft (43), in the vicinity of the collar (73), the said second collar (47) being integral with a housing (42) guided by bearings on the hollow shaft (43), the said housing (42) being extended by a second housing body (56) comprising guide elements for the kinematic connection (61, 62) and disposed so as to be able to rotate around the pinion (63) of the lover end of the hollow shaft (43) so as to be able to control the rotation of the nozzle (7), whereas the first electric motor (75) controls the modification of the angular position of the rocker bar, the supply pipe of the nozzle (7) passing through the hollow shaft (43).
  2. A blasting machine, according to Claim 1,
    characterised in that the horizontal shaft (67), one end of which is integral with one of the ends of the rocker bar (71), comprises, at its other end, a bevel gear (66) meshing with a bevel gear (65) fixed on a shaft guided by bearings in the second housing body (56) and on which a pinion (62), meshing with the pinion (63) of the lower end of the hollow shaft (43), is fixed.
  3. A blasting machine, according to claim 1,
    characterised in that the nozzle (7) is integral with one of the ends of a flexible tube (80) connected to a rigid pipe (83) passing through the hollow shaft (43) and connected by a joint rotating at the blasting unit.
  4. A blasting machine, according to Claim 1,
    characterised in that it comprises means for disconnecting the supply of the electric motors (49, 75) so that the deflection of the rocker bar can not go beyond angular positions greater than 180°.
  5. A blasting machine, according to Claim 4,
    characterised in that the means for disconnecting the supply of the electric motors (49 and 75), so that the deflection of the rocker bar (71) can not go beyond angular positions greater than 180°, comprise too pinions (90, 105), one meshing with one of the collars and the other with the other (47, 73), the one of the pinions being connected to a sliding keyed screw (98) and the other with a nut (101), the screw (98) bearing a device (110) capable of cooperating with devices (106, 107) for controlling the stopping of the motors (49, 75) when the angular position of the rocker bar (71) exceeds determined thresholds.
  6. A blasting machine, according to Claims 4 and 5,
    characterised in that it comprises means (108, 110) for detecting an angular reference position of the rocker bar (71).
  7. A blasting machine, according to Claim 1,
    characterised in that it comprises a programmable control device (110) inserted on the circuit of the electric motors (49, 75) to control the position of the nozzle (7) and the angular position of the rocker bar (71).
  8. A blasting machine, according to Claim 1,
    characterised in that it comprises means (16, 17, 18) for controlling a horizontal displacement of the nozzle.
  9. A blasting machine, according to Claim 1,
    characterised in that it comprises means (35) for controlling a vertical displacement of the nozzle.
EP19930400186 1992-01-29 1993-01-26 Blasting machine Expired - Lifetime EP0554163B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9200947A FR2686540B1 (en) 1992-01-29 1992-01-29 IMPROVEMENTS ON SHOT BLASTING MACHINES.
FR9200947 1992-01-29

Publications (2)

Publication Number Publication Date
EP0554163A1 EP0554163A1 (en) 1993-08-04
EP0554163B1 true EP0554163B1 (en) 1996-09-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930400186 Expired - Lifetime EP0554163B1 (en) 1992-01-29 1993-01-26 Blasting machine

Country Status (3)

Country Link
EP (1) EP0554163B1 (en)
DE (1) DE69304360T2 (en)
FR (1) FR2686540B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5522760A (en) * 1994-08-22 1996-06-04 Cummins Engine Company, Inc. Method of microdeburring a bore

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU781039A1 (en) * 1975-01-06 1980-11-23 Предприятие П/Я Р-6639 Shot blasting plant
SU905035A1 (en) * 1976-09-06 1982-02-15 Всесоюзный Проектно-Конструкторский Технологический Институт Атомного Машиностроения И Котлостроения "Атомкотломаш" Unit for abrasive cleaning of parts
KR840002298B1 (en) * 1980-01-30 1984-12-15 웨스팅하우스일렉트릭 코오포레이숀 Manipulator control system and apparatus for decontaminating nuclear steam generators
WO1991014539A1 (en) * 1990-03-27 1991-10-03 Southwest Research Institute Robotic system for paint removal

Also Published As

Publication number Publication date
FR2686540B1 (en) 1994-04-29
FR2686540A1 (en) 1993-07-30
DE69304360D1 (en) 1996-10-10
DE69304360T2 (en) 1997-02-20
EP0554163A1 (en) 1993-08-04

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