EP0818255A1 - Installation for riveting friction linings on their support discs - Google Patents

Installation for riveting friction linings on their support discs Download PDF

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Publication number
EP0818255A1
EP0818255A1 EP97111338A EP97111338A EP0818255A1 EP 0818255 A1 EP0818255 A1 EP 0818255A1 EP 97111338 A EP97111338 A EP 97111338A EP 97111338 A EP97111338 A EP 97111338A EP 0818255 A1 EP0818255 A1 EP 0818255A1
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EP
European Patent Office
Prior art keywords
tool
installation according
rivet
installation
piston
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Granted
Application number
EP97111338A
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German (de)
French (fr)
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EP0818255B1 (en
Inventor
Jean Fourquier
Denis Gosselin
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Valeo SE
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Valeo SE
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/28—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups
    • B21J15/285—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups for controlling the rivet upset cycle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/22—Drives for riveting machines; Transmission means therefor operated by both hydraulic or liquid pressure and gas pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/28—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups

Definitions

  • the present invention relates to a riveting installation friction linings on their associated support disc, in particular for a clutch friction of a motor vehicle.
  • the two friction linings are fixed on a support disc on either side of this one.
  • the support disc with its friction linings constitutes the clutch friction input element.
  • This element input is rigidly or resiliently coupled to an element outlet, usually in the form of an internally fluted hub for its connection in rotation with a driven shaft, namely the shaft input of the gearbox.
  • the input element is intended, through its friction linings, to be wedged, disengageably, in rotation on a shaft leading to know the integral crankshaft in rotation of pressure and reaction plates.
  • the fittings are attached to their support conventionally using hollow and shouldered rivets. This is produced using a so-called fixed tool and a mobile counter-tool relative to the fixed tool, the rivet being interposed between said tools.
  • the stationary tool has a mobile pilot centrally.
  • the tools are carried by a fixed frame.
  • the shoulder of the rivet is intended to come into contact with the support disc.
  • the barrel of the rivet crosses holes made in axial coincidence in the disc and the friction lining.
  • the free end of the hole in the friction lining, opposite the end of the hole adjacent to the disc is widened to counterbore and shoulder formation.
  • the head of the rivet is housed in the counterbore and is expanded into a daisy using the fixed tool in contact with the shoulder formed by the change of diameter of the friction lining hole, the moving tool acting on the shouldered tail of the rivet.
  • the profiled penetrating head pilot exits and is introduced into the trim and disc holes for placing said holes axial coincidence.
  • a vibrating bowl allowing supply of rivets, a movable needle, carried centrally for the mobile tool, allows to lower the rivet into the hole with pilot retraction in the form of a rod with penetrating head.
  • This descent is carried out using an electric motor actuating a connecting rod-crank system enabling a constant stroke of the moving tool.
  • the object of the present invention is to respond to these wishes in a simple and economical way.
  • a riveting installation of the above-mentioned type is characterized in that the mobile tool is carried by a fluid cylinder, while the stationary tool includes a force, and in that the force sensor is connected to a load to control the working stroke of the cylinder commanding it to stop using a force determined by the force sensor.
  • the force sensor is of the piezoelectric type and the pneumatic and hydraulic type cylinder.
  • This sensor Thanks to the quartz crystal sensor, measurements are obtained precise and with a small footprint.
  • This sensor also a simple shape while being generally of annular shape.
  • the load monitor is a measuring, control device and control.
  • this electronic monitor includes a charge amplifier to transform the force (charge) generated by the quartz crystal sensor in voltage.
  • the monitor also has a control unit which indicates in particular the operating mode of the monitor and controls the charge amplifier and other units.
  • This monitor sends an active command signal to the fluid cylinder more precisely to a distributor and a valve sequence that said cylinder.
  • the control unit allows comparisons to be made.
  • control signal sent is activated to the fluid cylinder.
  • the mobile tool can perform a stroke approach using a distributor allowing a supply in air from a chamber associated with a tool operating piston. A high speed movement can be achieved in this way with reduced effort until one comes into contact with the rivet.
  • the resistance created by the rivet to work causes the triggering of a so-called sequence valve allowing air tablet penetrating the back of an associated booster piston to a hydraulic chamber.
  • a working stroke is then carried out, the piston of maneuver being subjected to hydraulic pressure.
  • the valve is actuated so that the sequence valve starts at the exhaust with return of the operating pistons and amplification in the starting position.
  • a clutch friction which, from abovementioned manner, comprises a support disc 20 for linings friction 21 arranged on either side of the disc 20 belonging to the clutch friction input element, of which the output element consists of a hub 23 coupled here by springs 24 to the disc 20.
  • Hollow shouldered rivets 22 fix each lining 21 to the disc 20.
  • the hole in the lining 21 is stepped to form a counterbore and a shoulder used to house and support the head 25 of rivet 22 ( Figure 1). This head 25 is flourished at contact of said shoulder.
  • the other lining 21 has a hole 26 opposite the rivet 22 so that one can fix a gasket 21 then the other to disc 20.
  • Figure 2 This is done in a riveting installation ( Figure 2) comprising a tool 30 and a counter-tool 40.
  • the counter-tool 40 is axially movable relative to the tool 30 said fixed tool, while the counter tool will be referred to as a mobile tool and performs axial movements of descent and ascent.
  • the movable tool 40 is adapted to bear on the shoulder rivet 22, while the stationary tool allows crushing of the head 25 of the rivet in contact with the associated shoulder of the packing 21 when the movable tool 40 descends.
  • the installation comprises (FIG. 2) a fixed frame 50 carrying a fluid cylinder 60, a vibrating bowl 70 filled with rivets, a feeding 80 of the rivets 22 of the bowl 70 to the mobile tool 40 centrally presenting a movable needle 41 intended to penetrate in the internal bore of the rivet 22 and to lower the rivet.
  • the supply 80 generally consists of a guide channel with a split end allowing penetration of the barrels of rivets in the slot.
  • the needle 41 then makes it possible to grasp the rivets.
  • the stationary tool 30 comprises a movable pilot 31, in the form of rod with penetrating head.
  • a movable pilot 31 in the form of rod with penetrating head.
  • the needle 41 descends and concomitantly the pilot 31 retracts so that the rivet is brought into the holes in correspondence. Then we lower the mobile tool 40 to riveting.
  • the tool is integral with the operating piston 2 of the jack 60.
  • This jack has a nose 1 allowing its precise fixing by relative to the fixed frame 50.
  • the free end of the piston 2 is threaded.
  • the mobile tool 40 has a shaft 42 guided at translation by bearings 43 integral with the frame 50.
  • the end of the shaft 42 is tapped for fixing to the operating piston 2.
  • the movable tool 40 is therefore secured to the operating piston 2 of the fluid cylinder 60.
  • the stroke C of the mobile tool is not at constant stroke and a force sensor 90 is associated with the tool fixed 30.
  • This force sensor is connected to a load monitor 91 suitable for sending a signal to actuator 60 to stop the stroke of lowering the operating piston 2 thereof.
  • This monitor therefore makes it possible to control the working stroke of the cylinder 60 and limit it.
  • This monitor 91 is a measurement, command and control.
  • It includes a charge amplifier to transform the load (force) generated by the sensor 90 in tension electric.
  • An electric wire 92 here with several conductors, connects sensor 90 to monitor 91.
  • the senor 90 is advantageously a force sensor of the precise, robust and space-saving quartz type.
  • the jack 60 has an amplifying piston 13, according to a characteristic, so that the cylinder is of the "pneumo-hydraulic" type.
  • This cylinder has a control valve, a output flow reducer and return flow reducer associated with the control distributor, a limiter, a supply of the working stroke with a flow reducer the working race, a driving threshold, a pneumatic servo connection, a pressure gauge, a pressure switch pneumatic or electrical contact and pneumatic control or electric oil shortage.
  • the control piston 2 is internally hollow for creation of a blind cavity 5 supplied with oil at the front of the cylinder.
  • This piston 2 has a transverse collar delimiting two chambers suitable for being pneumatically supplied. Each chamber being suitable for being supplied from the distributor of control via conduits.
  • the arrows 16 and 17 respectively represent the arrivals and departures from these rooms. These rooms are suitable for be filled with air and are therefore pneumatic chambers.
  • the arrival and departure of the room associated with arrows 17 are connected by a conduit opening into a chamber 18 at the rear of the cylinder.
  • This chamber 18 is delimited by the amplifying piston subject to the action of a return spring 12.
  • An oil shortage warning light 8 a oil filling connection 9, a make-up oil tank 10, a closed circuit for filling at spaced intervals.
  • An unreferenced annular chamber connected in 6 to the atmosphere, prevents air from entering the hydraulic circuit.
  • a measurement and control connection 7 is also planned. There are also seals in 3 and 4 for the operating piston 2 and its collar.
  • the amplifying piston 13 penetrates with its plunger at through the high pressure seal that separates the upper chamber pressure 5 of the oil tank 10. A working stroke begins so.
  • the high oil pressure then acts on the piston 2 which is moved along a stroke C.
  • the sequence valve 14, 15 is controlled, as well as the control distributor, by monitor 91 and exhaust.
  • the monitor then sends an active signal taking into account the information given by the force sensor 90.
  • a return race is then carried out quickly under the action of the spring 12 bearing on the piston 13 and on a part 19 crossed by the plunger of the piston 13, the chamber associated with arrows 17 being depressurized.
  • the spring 12 also allows the part 19 to maintain pressure in the hydraulic tank 10.
  • the part 19 is therefore a compensating piston.
  • the measurement and control connection 7 allows adjustment pressing effort. So for a determined force detected by the sensor 90 the working stroke of the cylinder 60 is stopped. monitor 91 controls the working stroke of the actuator 60 by controlling stopping it.
  • the present invention is not limited to the example of embodiment described.
  • the force and the cylinder can have another configuration.
  • the friction linings 21 can be split.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Braking Arrangements (AREA)
  • Actuator (AREA)

Abstract

The riveting jig consists of a frame (50) with a riveting assembly in the form of a lower fixed tool (30). An upper moving tool (40) is applied to the head of a rivet as its shank passes through the friction lining and plate while the fixed tool forms a locking head. The moving tool is carried by a hydropneumatic cylinder (60). The fixed one is equipped with a quartz load detector (90) connected to a monitor with an amplifier which converts the load into a voltage.

Description

La présente invention concerne une installation de rivetage de garnitures de friction sur leur disque de support associé, notamment pour une friction d'embrayage de véhicule automobile.The present invention relates to a riveting installation friction linings on their associated support disc, in particular for a clutch friction of a motor vehicle.

Ainsi qu'on le sait les garnitures de friction d'une friction d'embrayage sont destinées à être serrées entre les plateaux de pression et de réaction d'un embrayage.As we know the friction linings of a friction clutch are intended to be clamped between the plates of pressure and reaction of a clutch.

Les deux garnitures de friction, usuellement de forme annulaire, sont fixées sur un disque de support de part et d'autre de celui-ci.The two friction linings, usually of annular shape, are fixed on a support disc on either side of this one.

Le disque de support avec ses garnitures de friction constitue l'élément d'entrée de la friction d'embrayage. Cet élément d'entrée est accouplé de manière rigide ou élastique à un élément de sortie, usuellement en forme de moyeu cannelé intérieurement pour sa liaison en rotation avec un arbre mené à savoir l'arbre d'entrée de la boíte de vitesses.The support disc with its friction linings constitutes the clutch friction input element. This element input is rigidly or resiliently coupled to an element outlet, usually in the form of an internally fluted hub for its connection in rotation with a driven shaft, namely the shaft input of the gearbox.

L'élément d'entrée est destiné, par l'intermédiaire de ses garnitures de friction, à être calé, de manière débrayable, en rotation sur un arbre menant à savoir le vilebrequin solidaire en rotation des plateaux de pression et de réaction.The input element is intended, through its friction linings, to be wedged, disengageably, in rotation on a shaft leading to know the integral crankshaft in rotation of pressure and reaction plates.

La fixation des garnitures sur leur support est réalisée classiquement à l'aide de rivets creux et épaulés. Ceci est réalisé à l'aide d'un outil dit fixe et d'un contre-outil mobile par rapport à l'outil fixe, le rivet étant interposé entre lesdits outils. L'outil fixe présente centralement un pilote mobile. Les outils sont portés par un bâti fixe.The fittings are attached to their support conventionally using hollow and shouldered rivets. this is produced using a so-called fixed tool and a mobile counter-tool relative to the fixed tool, the rivet being interposed between said tools. The stationary tool has a mobile pilot centrally. The tools are carried by a fixed frame.

L'épaulement du rivet est destiné à venir en contact avec le disque support. Le fût du rivet traverse des trous pratiqués en coïncidence axiale dans le disque et la garniture de friction. L'extrémité libre du trou de la garniture de friction, opposée à l'extrémité du trou adjacente au disque, est élargie pour formation d'un lamage et d'un épaulement. La tête du rivet est logée dans le lamage et est épanouie en marguerite à l'aide de l'outil fixe au contact de l'épaulement formé par le changement de diamètre du trou de la garniture de friction, l'outil mobile agissant sur la queue épaulée du rivet.The shoulder of the rivet is intended to come into contact with the support disc. The barrel of the rivet crosses holes made in axial coincidence in the disc and the friction lining. The free end of the hole in the friction lining, opposite the end of the hole adjacent to the disc is widened to counterbore and shoulder formation. The head of the rivet is housed in the counterbore and is expanded into a daisy using the fixed tool in contact with the shoulder formed by the change of diameter of the friction lining hole, the moving tool acting on the shouldered tail of the rivet.

Ainsi on présente la garniture et le disque, ensuite le pilote à tête pénétrante profilée sort et est introduit dans les trous de la garniture et du disque pour mettre lesdits trous en coincidence axiale. Au-dessus de l'outil fixe et de l'ensemble disque - garniture de friction se trouve un bol vibrant permettant l'alimentation en rivets, une aiguille mobile, portée centralement pour l'outil mobile, permet de descendre le rivet dans le trou avec escamotage du pilote en forme de tige à tête pénétrante.So we present the gasket and the disc, then the profiled penetrating head pilot exits and is introduced into the trim and disc holes for placing said holes axial coincidence. Above the stationary tool and the assembly disc - friction lining is a vibrating bowl allowing supply of rivets, a movable needle, carried centrally for the mobile tool, allows to lower the rivet into the hole with pilot retraction in the form of a rod with penetrating head.

Ensuite on descend l'outil mobile pour procéder au rivetage.Then we lower the mobile tool to proceed with riveting.

Cette descente est réalisée à l'aide d'un moteur électrique actionnant un système bielle-manivelle permettant d'effectuer une course constante de l'outil mobile.This descent is carried out using an electric motor actuating a connecting rod-crank system enabling a constant stroke of the moving tool.

Cette installation donne satisfaction. Néanmoins il peut être souhaitable de réduire les coûts de maintenance et de mieux contrôler le serrage des garnitures.This installation is satisfactory. Nevertheless it can be desirable to reduce maintenance costs and better check the tightness of the fittings.

La présente invention a pour objet de répondre à ces souhaits de manière simple et économique.The object of the present invention is to respond to these wishes in a simple and economical way.

Suivant l'invention une installation de rivetage du type susindiqué est caractérisé en ce que l'outil mobile est porté par un vérin à fluide, tandis que l'outil fixe comporte un capteur de force, et en ce que le capteur de force est relié à un moniteur de charge permettant de piloter la course de travail du vérin en commandant l'arrêt de celle-ci à partir d'une force déterminée par le capteur de force.According to the invention a riveting installation of the above-mentioned type is characterized in that the mobile tool is carried by a fluid cylinder, while the stationary tool includes a force, and in that the force sensor is connected to a load to control the working stroke of the cylinder commanding it to stop using a force determined by the force sensor.

Avantageusement le capteur de force est du type piézo-électrique et le vérin du type pneumatique et hydraulique.Advantageously, the force sensor is of the piezoelectric type and the pneumatic and hydraulic type cylinder.

Grâce à l'invention dès que l'on atteint la force de serrage prédéterminée au niveau des rivets, on arrête la course de l'outil mobile.Thanks to the invention as soon as the clamping force is reached predetermined at the rivets, we stop the tool stroke mobile.

Ainsi on contrôle de manière précise la fixation des garnitures de friction. En effet la force de serrage des rivets sera suffisante pour assurer en toute circonstance la transmission du couple. Elle ne sera pas trop élevée pour ne pas provoquer de rupture au niveau des garnitures de friction.Thus we precisely control the fixation of the friction linings. Indeed the clamping force of the rivets will be sufficient to ensure in all circumstances the transmission of the couple. It will not be too high so as not to cause rupture at the friction linings.

En fonctionnement les garnitures de friction ne s'arracheront pas au niveau de rivets.In operation the friction linings will not tear off not at the level of rivets.

Grâce à l'invention on peut s'affranchir de tout contrôle visuel en final. Le coût de l'installation est réduit, ainsi que les coûts de maintenance.Thanks to the invention, one can get rid of all control visual in the end. The cost of installation is reduced, as well as maintenance costs.

La gestion instantanée de la charge appliquée permet à chaque rivetage pour des frictions d'embrayage différentes de s'affranchir de tous les paramètres physiques.Instant management of the applied load allows each riveting for clutch friction different from get rid of all physical parameters.

Grâce au capteur à cristal de quartz, on obtient des mesures précises et ce avec un encombrement réduit. Ce capteur a également une forme simple en étant globalement de forme annulaire.Thanks to the quartz crystal sensor, measurements are obtained precise and with a small footprint. This sensor also a simple shape while being generally of annular shape.

Le moniteur de charge est un appareil de mesure, de commande et de contrôle. En pratique ce moniteur de nature électronique comporte un amplificateur de charge permettant de transformer la force (la charge) engendrée par le capteur à cristal de quartz en tension.The load monitor is a measuring, control device and control. In practice, this electronic monitor includes a charge amplifier to transform the force (charge) generated by the quartz crystal sensor in voltage.

Le moniteur présente également une unité de commande qui indique notamment le mode de fonctionnement du moniteur et commande l'amplificateur de charge ainsi que d'autres unités.The monitor also has a control unit which indicates in particular the operating mode of the monitor and controls the charge amplifier and other units.

Ce moniteur permet d'envoyer un signal actif de commande au vérin à fluide plus précisément à un distributeur et à une valve de séquence que comporte ledit vérin.This monitor sends an active command signal to the fluid cylinder more precisely to a distributor and a valve sequence that said cylinder.

L'unité de commande permet d'effectuer des comparaisons.The control unit allows comparisons to be made.

Ainsi on peut afficher au moyen d'un sélecteur des valeurs limites et effectuer à l'aide d'un comparateur, recevant le signal amplifié du capteur et la valeur du signal affiché, une comparaison.So you can display by means of a value selector limits and perform using a comparator, receiving the signal of the sensor and the value of the displayed signal, a comparison.

Lors d'un dépassement on active le signal de commande envoyé au vérin à fluide.When exceeded, the control signal sent is activated to the fluid cylinder.

On peut réaliser également des fonctions de surveillance et allumer en conséquence des diodes ou une alarme. It is also possible to perform monitoring and light diodes or an alarm accordingly.

On peut également afficher la sensibilité du capteur et réaliser des tests.You can also display the sensitivity of the sensor and perform tests.

A l'aide par exemple d'un bouton poussoir on peut effectuer une brève remise à zéro de l'amplificateur de charge et de la mémoire de valeur de pointe.Using, for example, a push button, you can a brief reset of the charge amplifier and the peak value memory.

A l'aide de la fonction surveillance dès que le signal associé au capteur devient inférieur à un signal prédéterminé on déclenche une alarme./Using the monitoring function as soon as the signal associated with the sensor becomes less than a predetermined signal on triggers an alarm./

Tout cela est réalisé en configurant électroniquement en conséquence le moniteur.All of this is achieved by electronically configuring accordingly the monitor.

Grâce au vérin de nature pneumatique et hydraulique, dit vérin pneumo-hydraulique, l'outil mobile peut effectuer une course d'approche à l'aide d'un distributeur permettant une alimentation en air d'une chambre associée à un piston de manoeuvre de l'outil. Un déplacement à grande vitesse peut être ainsi réalisé et ce avec un effort réduit jusqu'à ce que l'on vienne en contact avec le rivet.Thanks to the pneumatic and hydraulic cylinder, said pneumo-hydraulic cylinder, the mobile tool can perform a stroke approach using a distributor allowing a supply in air from a chamber associated with a tool operating piston. A high speed movement can be achieved in this way with reduced effort until one comes into contact with the rivet.

La résistance créée par le rivet à travailler provoque le déclenchement d'une valve dite de séquence permettant à de l'air comprimé de pénétrer à l'arrière d'un piston amplificateur associé à une chambre hydraulique.The resistance created by the rivet to work causes the triggering of a so-called sequence valve allowing air tablet penetrating the back of an associated booster piston to a hydraulic chamber.

On effectue alors une course de travail, le piston de manoeuvre étant soumis à une pression hydraulique.A working stroke is then carried out, the piston of maneuver being subjected to hydraulic pressure.

Dès que le distributeur reçoit un signal du moniteur le distributeur est actionné en sorte que la valve de séquence se met à l'échappement avec retour des pistons de manoeuvre et d'amplification en position de départ.As soon as the distributor receives a signal from the monitor the valve is actuated so that the sequence valve starts at the exhaust with return of the operating pistons and amplification in the starting position.

Il ressort à l'évidence de ce qui précède que l'installation est peu coûteuse et d'un coût de maintenance réduit.It is evident from the above that the installation is inexpensive and low maintenance cost.

La description qui va suivre illustre l'invention en regard des dessins annexés dans lesquels

  • la figure 1 est une demi-vue en coupe axiale d'une friction d'embrayage ;
  • la figure 2 est une vue schématique de l'installation de rivetage selon l'invention sans le disque de support et les garnitures de friction :
  • la figure 3 est une vue à plus grande échelle d'une partie de la figure 2 :
  • la figure 4 est une vue partielle montrant l'outil dit fixe :
  • la figure 5 est une vue schématique en coupe du vérin de l'installation.
The following description illustrates the invention with reference to the accompanying drawings in which
  • Figure 1 is a half view in axial section of a clutch friction;
  • FIG. 2 is a schematic view of the riveting installation according to the invention without the support disc and the friction linings:
  • FIG. 3 is a view on a larger scale of part of FIG. 2:
  • FIG. 4 is a partial view showing the so-called fixed tool:
  • Figure 5 is a schematic sectional view of the cylinder of the installation.

A la figure 1 on voit en 20 une friction d'embrayage qui, de manière précitée, comporte un disque de support 20 de garnitures de friction 21 disposées de part et d'autre du disque 20 appartenant à l'élément d'entrée de la friction d'embrayage, dont l'élément de sortie consiste en un moyeu 23 accouplé ici par des ressorts 24 au disque 20. Des rivets creux épaulés 22 fixent chaque garniture 21 au disque 20.In Figure 1 we see at 20 a clutch friction which, from abovementioned manner, comprises a support disc 20 for linings friction 21 arranged on either side of the disc 20 belonging to the clutch friction input element, of which the output element consists of a hub 23 coupled here by springs 24 to the disc 20. Hollow shouldered rivets 22 fix each lining 21 to the disc 20.

Chaque rivet 22, par sa queue, constituant l'épaulement, prend appui sur le disque 20 et traverse par son fût des trous (non référencés) réalisés en coïncidence axiale dans le disque 20 et la garniture 21.Each rivet 22, by its tail, constituting the shoulder, rests on disc 20 and crosses holes through its barrel (not referenced) made in axial coincidence in the disc 20 and the trim 21.

Le trou de la garniture 21 est étagé pour formation d'un lamage et d'un épaulement servant au logement et à l'appui de la tête 25 du rivet 22 (figure 1). Cette tête 25 est épanouie au contact dudit épaulement. L'autre garniture 21 présente un trou 26 en regard du rivet 22 en sorte que l'on peut fixer une garniture 21 puis l'autre au disque 20.The hole in the lining 21 is stepped to form a counterbore and a shoulder used to house and support the head 25 of rivet 22 (Figure 1). This head 25 is flourished at contact of said shoulder. The other lining 21 has a hole 26 opposite the rivet 22 so that one can fix a gasket 21 then the other to disc 20.

Ceci est réalisé dans une installation de rivetage (figure 2) comportant un outil 30 et un contre-outil 40. Le contre-outil 40 est mobile axialement par rapport à l'outil 30 dit outil fixe, tandis que le contre-outil sera dénommé outil mobile et effectue des mouvements axiaux de descente et de montée.This is done in a riveting installation (Figure 2) comprising a tool 30 and a counter-tool 40. The counter-tool 40 is axially movable relative to the tool 30 said fixed tool, while the counter tool will be referred to as a mobile tool and performs axial movements of descent and ascent.

L'outil mobile 40 est adapté à prendre appui sur l'épaulement du rivet 22, tandis que l'outil fixe permet un écrasement de la tête 25 du rivet au contact de l'épaulement associé de la garniture 21 lorsque l'outil mobile 40 descend.The movable tool 40 is adapted to bear on the shoulder rivet 22, while the stationary tool allows crushing of the head 25 of the rivet in contact with the associated shoulder of the packing 21 when the movable tool 40 descends.

L'installation comprend (figure 2) un bâti fixe 50 portant un vérin à fluide 60, un bol vibrant 70 rempli de rivets, une alimentation 80 des rivets 22 du bol 70 à l'outil mobile 40 présentant centralement une aiguille mobile 41 destinée à pénétrer dans l'alésage interne du rivet 22 et à descendre le rivet.The installation comprises (FIG. 2) a fixed frame 50 carrying a fluid cylinder 60, a vibrating bowl 70 filled with rivets, a feeding 80 of the rivets 22 of the bowl 70 to the mobile tool 40 centrally presenting a movable needle 41 intended to penetrate in the internal bore of the rivet 22 and to lower the rivet.

L'alimentation 80 consiste globalement en un canal de guidage avec une extrémité fendue permettant une pénétration des fûts des rivets dans la fente. L'aiguille 41 permet alors de saisir les rivets.The supply 80 generally consists of a guide channel with a split end allowing penetration of the barrels of rivets in the slot. The needle 41 then makes it possible to grasp the rivets.

L'outil fixe 30 comporte un pilote 31 mobile, en forme de tige à tête pénétrante. Ainsi qu'on l'aura compris un bras d'un robot amène la garniture d'un et le disque au niveau de l'outil fixe 30 épaulé. Le pilote 31 sort pour amener les trous de la garniture et du disque en correspondance.The stationary tool 30 comprises a movable pilot 31, in the form of rod with penetrating head. As we will have understood an arm of a robot brings the padding and the disc to the level of the tool fixed 30 shouldered. Pilot 31 goes out to bring the holes in the trim and matching disc.

L'aiguille 41 descend et concomitamment le pilote 31 se rétracte en sorte que le rivet est amené dans les trous en correspondance. Ensuite on descend l'outil mobile 40 pour effectuer le rivetage.The needle 41 descends and concomitantly the pilot 31 retracts so that the rivet is brought into the holes in correspondence. Then we lower the mobile tool 40 to riveting.

Ainsi on voit à la figure 3 en pointillés la positions de descente de l'outil mobile 40 ayant effectué la course C.Thus we see in Figure 3 in dotted lines the positions of lowering of the movable tool 40 having completed the stroke C.

Ici l'outil est solidaire du piston de manoeuvre 2 du vérin 60. Ce vérin comporte un nez 1 permettant sa fixation précise par rapport au bâti fixe 50. L'extrémité libre du piston 2 est filetée. L'outil mobile 40 présente un arbre 42 guidé à translation par des paliers 43 solidaires du bâti 50.Here the tool is integral with the operating piston 2 of the jack 60. This jack has a nose 1 allowing its precise fixing by relative to the fixed frame 50. The free end of the piston 2 is threaded. The mobile tool 40 has a shaft 42 guided at translation by bearings 43 integral with the frame 50.

L'extrémité de l'arbre 42 est taraudé pour sa fixation au piston de manoeuvre 2.The end of the shaft 42 is tapped for fixing to the operating piston 2.

L'outil mobile 40 est donc solidaire du piston de manoeuvre 2 du vérin à fluide 60.The movable tool 40 is therefore secured to the operating piston 2 of the fluid cylinder 60.

Suivant l'invention la course C de l'outil mobile n'est pas à course constante et un capteur de force 90 est associé à l'outil fixe 30. Ce capteur de force est relié à un moniteur de charge 91 propre à envoyer un signal au vérin 60 pour arrêter la course de descente du piston de manoeuvre 2 de celui-ci.According to the invention, the stroke C of the mobile tool is not at constant stroke and a force sensor 90 is associated with the tool fixed 30. This force sensor is connected to a load monitor 91 suitable for sending a signal to actuator 60 to stop the stroke of lowering the operating piston 2 thereof.

Le moniteur permet donc de piloter la course de travail du vérin 60 et de limiter celle-ci. Ce moniteur 91 est un appareil de mesure, de commande et de contrôle.The monitor therefore makes it possible to control the working stroke of the cylinder 60 and limit it. This monitor 91 is a measurement, command and control.

Il comporte un amplificateur de charge pour transformer la charge (la force) engendrée par le capteur 90 en tension électrique. Un fil électrique 92 , ici à plusieurs conducteurs, relie le capteur 90 au moniteur 91.It includes a charge amplifier to transform the load (force) generated by the sensor 90 in tension electric. An electric wire 92, here with several conductors, connects sensor 90 to monitor 91.

Ici le capteur 90 est avantageusement un capteur de force du type à quartz précis, robuste et peu encombrant.Here the sensor 90 is advantageously a force sensor of the precise, robust and space-saving quartz type.

Le vérin 60 compte un piston amplificateur 13, suivant une caractéristique, en sorte que le vérin est du type "pneumo-hydraulique". Ce vérin comporte un distributeur de commande, un réducteur de débit de sortie et un réducteur de débit de retour associés au distributeur de commande, un limiteur, une alimentation de la course de travail avec un réducteur de débit de la course de travail, une conduite de seuil de pilotage, un raccord pneumatique d'asservissement, un manomètre, un manostat à contact pneumatique ou électrique et un contrôle pneumatique ou électrique de manque d'huile.The jack 60 has an amplifying piston 13, according to a characteristic, so that the cylinder is of the "pneumo-hydraulic" type. This cylinder has a control valve, a output flow reducer and return flow reducer associated with the control distributor, a limiter, a supply of the working stroke with a flow reducer the working race, a driving threshold, a pneumatic servo connection, a pressure gauge, a pressure switch pneumatic or electrical contact and pneumatic control or electric oil shortage.

Pour plus de précision on se reportera à la figure 5 montrant les agencements des constituants précités et les conduites.For more details, see Figure 5 showing the arrangements of the aforementioned constituents and the pipes.

Le piston de commande 2 est intérieurement creux pour création d'une cavité borgne 5 alimentée en huile à l'avant du vérin.The control piston 2 is internally hollow for creation of a blind cavity 5 supplied with oil at the front of the cylinder.

Ce piston 2 présente une collerette transversale délimitant deux chambres propres à être alimentées pneumatiquement. Chaque chambre étant propre à être alimentées à partir du distributeur de commande par l'intermédiaire de conduits.This piston 2 has a transverse collar delimiting two chambers suitable for being pneumatically supplied. Each chamber being suitable for being supplied from the distributor of control via conduits.

On a représenté par des flèches 16 respectivement 17 les arrivées et sorties de ces chambres. Ces chambres sont adaptées à être remplies par de l'air et sont donc des chambres pneumatiques. L'arrivée et la sortie de la chambre associée aux flèches 17 sont reliées par un conduit débouchant dans une chambre 18 à l'arrière du vérin.The arrows 16 and 17 respectively represent the arrivals and departures from these rooms. These rooms are suitable for be filled with air and are therefore pneumatic chambers. The arrival and departure of the room associated with arrows 17 are connected by a conduit opening into a chamber 18 at the rear of the cylinder.

Cette chambre 18 est délimitée par le piston amplificateur soumis à l'action d'un ressort de rappel 12.This chamber 18 is delimited by the amplifying piston subject to the action of a return spring 12.

Plus précisément le fluide, ici de l'air, s'écoule des flèches 17 à la chambre 18 en passant par une valve de séquence 15 à distributeur 14.More precisely the fluid, here air, flows from arrows 17 to chamber 18 via a sequence valve 15 dispenser 14.

Il est également prévu un témoin de manque d'huile 8, un raccord de remplissage d'huile 9, un réservoir d'huile d'appoint 10, un circuit fermé pour le remplissage à intervalles espacés.An oil shortage warning light 8, a oil filling connection 9, a make-up oil tank 10, a closed circuit for filling at spaced intervals.

Une chambre annulaire non référencée, reliée en 6 à l'atmosphère, empêche l'air de pénétrer dans le circuit hydraulique.An unreferenced annular chamber, connected in 6 to the atmosphere, prevents air from entering the hydraulic circuit.

Un raccordement de mesure et de pilotage 7 est également prévu. Il est en outre prévu des étanchéité en 3 et 4 pour le piston de manoeuvre 2 et sa collerette.A measurement and control connection 7 is also planned. There are also seals in 3 and 4 for the operating piston 2 and its collar.

Ainsi qu'on l'aura compris on peut réaliser à l'aide du vérin 60 une course d'approche et ce rapidement à grande vitesse et avec un effort réduit.As we will understand it can be achieved using the cylinder 60 an approach race and this quickly at high speed and with reduced effort.

Pour ce faire à l'aide du distributeur de commande, on alimente la chambre associée aux flèches 17, la chambre associée aux flèches 16 étant dépressurisée.To do this using the control distributor, feeds the room associated with arrows 17, the associated room arrows 16 being depressurized.

Lorsque l'outil 40 vient en contact avec l'épaulement du rivet 22, la résistance créée par le rivet 22 provoque le déclenchement de la valve de séquence 15, l'air comprimé pénètre alors dans la chambre 18.When the tool 40 comes into contact with the shoulder of the rivet 22, the resistance created by rivet 22 causes the trigger of sequence valve 15, compressed air enters then in room 18.

Le piston amplificateur 13 pénètre avec son plongeur à travers le joint haute pression qui sépare la chambre haute pression 5 du réservoir d'huile 10. Une course de travail commence alors.The amplifying piston 13 penetrates with its plunger at through the high pressure seal that separates the upper chamber pressure 5 of the oil tank 10. A working stroke begins so.

La haute pression d'huile agit alors sur le piston 2 qui est déplacé selon une course C. Dès que la force de rivetage est atteinte, la valve de séquence 14, 15 est commandée, ainsi que le distributeur de commande, par le moniteur 91 et se met en échappement. En effet le moniteur envoie alors un signal actif compte tenu de l'information donnée par le capteur d'effort 90.The high oil pressure then acts on the piston 2 which is moved along a stroke C. As soon as the riveting force is reached, the sequence valve 14, 15 is controlled, as well as the control distributor, by monitor 91 and exhaust. The monitor then sends an active signal taking into account the information given by the force sensor 90.

Une course de retour est alors effectuée rapidement sous l'action du ressort 12 prenant appui sur le piston 13 et sur une pièce 19 traversée par le plongeur du piston 13, la chambre associée aux flèches 17 étant dépressurisée.A return race is then carried out quickly under the action of the spring 12 bearing on the piston 13 and on a part 19 crossed by the plunger of the piston 13, the chamber associated with arrows 17 being depressurized.

Le ressort 12 permet également par la pièce 19 un maintien en pression dans le réservoir hydraulique 10. La pièce 19 est donc un piston compensateur.The spring 12 also allows the part 19 to maintain pressure in the hydraulic tank 10. The part 19 is therefore a compensating piston.

Grâce au système de protection 11 un remplissage excessif d'huile est exclu.Thanks to the protection system 11 overfilling oil is excluded.

Le raccordement de mesure et de pilotage 7 permet de régler l'effort de pressage. Ainsi pour une force déterminée détectée par le capteur 90 on arrête la course de travail du vérin 60. Le moniteur 91 pilote la course de travail du vérin 60 en commandant l'arrêt de celle-ci.The measurement and control connection 7 allows adjustment pressing effort. So for a determined force detected by the sensor 90 the working stroke of the cylinder 60 is stopped. monitor 91 controls the working stroke of the actuator 60 by controlling stopping it.

Bien entendu la présente invention n'est pas limitée à l'exemple de réalisation décrit. En particulier le capteur de force et le vérin peuvent avoir une autre configuration.Of course, the present invention is not limited to the example of embodiment described. In particular the force and the cylinder can have another configuration.

Les garnitures de friction 21 peuvent être fractionnées.The friction linings 21 can be split.

Claims (8)

Installation de rivetage de garnitures de friction (21) sur leur disque de support (20) associé, notamment pour une friction d'embrayage de véhicule automobile, comportant, porté par un bâti fixe (50), d'une part, un outil (30), dit outil fixe, et, d'autre part, un contre-outil (40), dit outil mobile, mobile par rapport à l'outil fixe (30), ledit outil mobile (40) étant propre à prendre appui sur l'épaulement d'un rivet (22) dont le fût traverse le disque de support (20) et la garniture de friction (21), tandis que l'outil fixe (30) est destiné à prendre appui sur la tête (25) du rivet (22) à épanouir au contact d'un épaulement de la garniture de friction (21) concernée, caractérisé en ce que l'outil mobile (40) est porté par un vérin à fluide (60), tandis que l'outil fixe (30) comporte un capteur de force (90) et en ce que le capteur de force est relié à un moniteur de charge (90) permettant de piloter la course de travail du vérin (60) en commande l'arrêt à partir d'une force déterminée par le capteur de force (90).Riveting installation of friction linings (21) on their associated support disc (20), in particular for a motor vehicle clutch friction comprising, carried by a fixed frame (50), on the one hand, a tool (30), called a fixed tool, and, on the other hand, a counter-tool (40), said mobile tool, mobile by relative to the stationary tool (30), said movable tool (40) being clean to bear on the shoulder of a rivet (22) whose barrel crosses the support disc (20) and the friction lining (21), while the fixed tool (30) is intended to bear on the head (25) of the rivet (22) to flourish in contact with a shoulder of the friction lining (21) concerned, characterized in that the movable tool (40) is carried by a fluid cylinder (60), while that the stationary tool (30) comprises a force sensor (90) and in this the force sensor is connected to a load monitor (90) for controlling the working stroke of the jack (60) in commands the stop from a force determined by the strength (90). Installation selon la revendication 1, caractérisé en ce que le capteur de force (90) est un capteur de force à quartz.Installation according to claim 1, characterized in that that the force sensor (90) is a quartz force sensor. Installation selon la revendication 1 ou 2, caractérisé en ce que le vérin (60) à fluide est de nature pneumatique et hydraulique.Installation according to claim 1 or 2, characterized in that the fluid cylinder (60) is pneumatic in nature and hydraulic. Installation selon la revendication 3, caractérisé en ce que le vérin (60) comporte un piston de manoeuvre (2) avec une collerette séparant deux chambres propres à être alimentées en air.Installation according to claim 3, characterized in that that the cylinder (60) comprises an operating piston (2) with a collar separating two chambers suitable for being supplied with air. Installation selon la revendication 4, caractérisé en ce que le vérin comporte un piston amplificateur (13) pour pressuriser une chambre hydraulique (5) délimitée en partie par le piston de manoeuvre (2) intérieurement creux à cet effet.Installation according to claim 4, characterized in that that the jack comprises an amplifying piston (13) for pressurize a hydraulic chamber (5) delimited in part by the internally hollow operating piston (2) for this purpose. Installation selon la revendication 5, caractérisé en ce que le piston amplificateur (13) délimite une chambre (18) en communication avec une valve de séquence (15) propre à être rendue active par un signal provenant du moniteur de charge (91).Installation according to claim 5, characterized in that the amplifying piston (13) delimits a chamber (18) in communication with a sequence valve (15) capable of being returned activated by a signal from the charge monitor (91). Installation selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le moniteur de charge (91) est un appareil de mesure de commande et de contrôle.Installation according to any one of claims 1 to 6, characterized in that the load monitor (91) is a command and control measuring apparatus. Installation selon les revendications 6 et 7 prises conjointement, caractérisé en ce que le moniteur de charge (91) comporte un amplificateur de charge permettant de transformer la force engendrée par le capteur à quartz (90) en tension.Installation according to claims 6 and 7 taken jointly, characterized in that the load monitor (91) includes a charge amplifier to transform the force generated by the quartz sensor (90) in tension.
EP19970111338 1996-07-09 1997-07-04 Installation for riveting friction linings on their support discs Expired - Lifetime EP0818255B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9608653A FR2753401B1 (en) 1996-07-09 1996-07-09 FRICTION LINING RIVETING SYSTEM ON THEIR SUPPORT DISC
FR9608653 1996-07-09

Publications (2)

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EP0818255A1 true EP0818255A1 (en) 1998-01-14
EP0818255B1 EP0818255B1 (en) 2001-10-24

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EP (1) EP0818255B1 (en)
DE (1) DE69711723T2 (en)
FR (1) FR2753401B1 (en)

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WO2003056028A1 (en) 2001-12-31 2003-07-10 Vitatene, S.A. Improved method of producing lycopene through the fermentation of selected strains of blakeslea trispora, formulations and uses of the lycopene thus obtained
CN110877088A (en) * 2019-12-18 2020-03-13 哈工大机器人集团（哈尔滨）华粹智能装备有限公司 Rotatory floating structure riveting clutch friction disc equipment of slip table

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CN107243563A (en) * 2016-08-24 2017-10-13 上海奥林汽车配件有限公司 One kind automation locking board riveting set

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Publication number Priority date Publication date Assignee Title
WO2003056028A1 (en) 2001-12-31 2003-07-10 Vitatene, S.A. Improved method of producing lycopene through the fermentation of selected strains of blakeslea trispora, formulations and uses of the lycopene thus obtained
EP2143800A1 (en) 2001-12-31 2010-01-13 Vitatene, S.A. Formulations of lycopene and uses thereof
CN110877088A (en) * 2019-12-18 2020-03-13 哈工大机器人集团（哈尔滨）华粹智能装备有限公司 Rotatory floating structure riveting clutch friction disc equipment of slip table

Also Published As

Publication number Publication date
DE69711723D1 (en) 2002-05-08
FR2753401A1 (en) 1998-03-20
FR2753401B1 (en) 1998-10-16
EP0818255B1 (en) 2001-10-24
DE69711723T2 (en) 2002-08-08

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