EP0818255B1 - Installation de rivetage de garnitures de friction sur leur disque de support - Google Patents
Installation de rivetage de garnitures de friction sur leur disque de support Download PDFInfo
- Publication number
- EP0818255B1 EP0818255B1 EP19970111338 EP97111338A EP0818255B1 EP 0818255 B1 EP0818255 B1 EP 0818255B1 EP 19970111338 EP19970111338 EP 19970111338 EP 97111338 A EP97111338 A EP 97111338A EP 0818255 B1 EP0818255 B1 EP 0818255B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- rivet
- piston
- jack
- force sensor
- 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
Links
Images
Classifications
-
- 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 holes of the lining and of the disc to put the said holes in axial coincidence.
- a bowl vibrating allowing the supply in rivets, a needle mobile, carried centrally for the mobile tool, allows lower the rivet into the hole with retraction of the pilot form of rod with penetrating head.
- This descent is carried out using a motor electric actuating a rod-crank system allowing to make a constant stroke of the mobile tool.
- the object of the present invention is to respond to these wishes in a simple and economical way.
- 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 operating 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 4 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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
- Actuator (AREA)
Description
- 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.
Claims (6)
- 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, l'outil mobile (40) est porté par un vérin à fluide (60), tandis que l'outil fixe (30) comporte un capteur de force (90), en ce que le capteur de force est relié à un moniteur de charge (91) permettant de piloter la course de travail du vérin (60) en commandant l'arrêt à partir d'une force déterminée par le capteur de force (90), caractérisé en ce que le vérin à fluide (60) est de nature pneumatique et hydraulique, en ce que le vérin (60) comporte un piston de manoeuvre (2) avec une collerette (4) séparant deux chambres propres à être alimentées en air et 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 selon la revendication 1, 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 selon la revendication 2, caractérisé en ce que lorsque l'outil mobile vient en contact avec l'épaulement du rivet (22), la valve de séquence (15) est déclenchée en sorte que la chambre hydraulique (5) est pressurisée, la course d'approche de l'outil étant réalisée pneumatiquement.
- Installation selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le moniteur de charge (91) est un appareil de mesure de commande et de contrôle.
- Installation selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le capteur de force (90) est un capteur de force à quartz.
- Installation selon la revendication 5, 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.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9608653A FR2753401B1 (fr) | 1996-07-09 | 1996-07-09 | Installation de rivetage de garnitures de friction sur leur disque de support |
FR9608653 | 1996-07-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0818255A1 EP0818255A1 (fr) | 1998-01-14 |
EP0818255B1 true EP0818255B1 (fr) | 2001-10-24 |
Family
ID=9493933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970111338 Expired - Lifetime EP0818255B1 (fr) | 1996-07-09 | 1997-07-04 | Installation de rivetage de garnitures de friction sur leur disque de support |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0818255B1 (fr) |
DE (1) | DE69711723T2 (fr) |
FR (1) | FR2753401B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2195758B1 (es) | 2001-12-31 | 2005-03-01 | Antibioticos, S.A.U. | Procedimiento mejorado de produccion de licopeno mediante la fermentacion de cepas seleccionadas de blakeslea trispora, formulaciones y usos del licopeno obtenido. |
CN107243563A (zh) * | 2016-08-24 | 2017-10-13 | 上海奥林汽车配件有限公司 | 一种自动化锁扣板铆接装置 |
CN110877088B (zh) * | 2019-12-18 | 2021-03-02 | 黑龙江哈工华粹智能装备有限公司 | 一种滑台旋转浮动式结构铆接离合器摩擦片设备 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4497197A (en) * | 1983-02-18 | 1985-02-05 | Chicago Pneumatic Tool Company | Pneumatic hydraulic hand-held power unit |
DE3916014A1 (de) * | 1989-05-17 | 1990-11-22 | Fraunhofer Ges Forschung | Werkzeug zum durchsetzfuegen, nieten oder einpressen |
US5398537A (en) * | 1991-12-06 | 1995-03-21 | Gemcor Engineering Corporation | Low amperage electromagnetic apparatus and method for uniform rivet upset |
JPH07108497A (ja) * | 1993-10-12 | 1995-04-25 | Nissan Motor Co Ltd | 圧電素子を用いた加工ガン及びその制御装置 |
JPH07284877A (ja) * | 1994-04-20 | 1995-10-31 | Mitsubishi Heavy Ind Ltd | 油圧制御鋲打機 |
-
1996
- 1996-07-09 FR FR9608653A patent/FR2753401B1/fr not_active Expired - Fee Related
-
1997
- 1997-07-04 EP EP19970111338 patent/EP0818255B1/fr not_active Expired - Lifetime
- 1997-07-04 DE DE1997611723 patent/DE69711723T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0818255A1 (fr) | 1998-01-14 |
DE69711723T2 (de) | 2002-08-08 |
DE69711723D1 (de) | 2002-05-08 |
FR2753401A1 (fr) | 1998-03-20 |
FR2753401B1 (fr) | 1998-10-16 |
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