EP0109323A1 - Method for planetary mill operation - Google Patents

Method for planetary mill operation Download PDF

Info

Publication number
EP0109323A1
EP0109323A1 EP19830402081 EP83402081A EP0109323A1 EP 0109323 A1 EP0109323 A1 EP 0109323A1 EP 19830402081 EP19830402081 EP 19830402081 EP 83402081 A EP83402081 A EP 83402081A EP 0109323 A1 EP0109323 A1 EP 0109323A1
Authority
EP
European Patent Office
Prior art keywords
product
cylinder
orbit
contact
laminated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19830402081
Other languages
German (de)
French (fr)
Other versions
EP0109323B1 (en
Inventor
Bernard Fazan
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Publication of EP0109323A1 publication Critical patent/EP0109323A1/en
Application granted granted Critical
Publication of EP0109323B1 publication Critical patent/EP0109323B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/42—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for step-by-step or planetary rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/18—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for step-by-step or planetary rolling; pendulum mills

Definitions

  • the present invention relates to a family of rolling methods in which the working rolls are movable in space and come into contact with the product periodically, over all or part of their trajectory.
  • Laminating plants built according to this principle are today well known under the name “planetary rolling mill” and have a particular design from a series of small horizontal working rolls, arranged in a “squirrel cage” rotating at great speed. speed around support rollers mounted in "duo" on both sides of the product.
  • the object of the present invention is to solve the problem of these repetitive shocks from the noise disturbances specific to the planetary rolling mill by means of a solution which does not have the drawbacks of known methods.
  • the subject of the invention is a method for operating a planetary rolling mill according to which the working cylinder traverses an orbit over a portion of which at least it comes into contact with the product to be laminated, a method characterized in that the direction of rolling of the product being assumed to be horizontal, the movement of the cylinder is imparted on said portion of the orbit, a trajectory in the form of a "5" horizontally and limited by two points where the tangents to the orbit are parallel to each other and to the rolling direction of the product.
  • the invention also relates to a device for implementing the method, characterized in that it consists of a combination of eccentrics and connecting rods which impart a displacement in space along the axis of the rolling cylinder according to an orbit comprising a portion of trajectory in the form of an "S" to the horizontal limited by two points where the tangents to said orbit are parallel to each other and to the direction of movement of the product to be laminated.
  • the portion 4 of this orbit the portion along which the cylinder 1 is in contact with the product 5, has a trajectory in the form of an "S" horizontally limited by two extreme points A and B where the tangents T A , T B at orbit 3 carried at these points are mutually parallel and parallel to the rolling direction of the product 5, indicated by the arrow V in the figure and which, in practice, can generally be considered as perfectly horizontal.
  • the trajectory 4 advantageously has an inflection point 1 to ensure a regular displacement of the cylinder 1 between the extreme points A and B.
  • an opposing system A'I'B ' is arranged symmetrically with the first system A.I.B. compared to the product to be laminated 5.
  • This opposing system A'I'R the same elements and arrangements, as in the system A.I.B. identified by references which are differentiated only by the sign "prime".
  • the axes 2, 2 'of the working rolls 1, l' are horizontal and perpendicular to the plane of the figure. It can therefore be seen that the thickness of the rolled product 5 is thus reduced by the quantity 2d (d being the distance separating the tangents T A and T B - respectively T A I and T B '-), when the cylinders 1 and the cross their respective arc AB and A'B '.
  • the trajectory of the cylinder 1 tangentially connects the surface of the product to be laminated 5 and there can therefore be no shock.
  • the cylinder is printed, when it comes into contact with the product, a speed of rotation equal to, or in any case close to, that which corresponds to the conditions of rolling of the cylinder on the product to be laminated (this being defined, therefore predeterminable as we know and as we know how to calculate it, from the speed of the product to be laminated, and the value and direction of the speed of the cylinder on its orbit upon contact with the product).
  • the working cylinder is rotated about its axis 2 under the effect of cissions which arise on contact with the rolled product.
  • Energy is supplied by the motors controlling the system which generates the movement of the cylinder in its orbit.
  • the shape of the horizontal "S" of the contact arc AB is such that this thrust force is minimal when the contact of the cylinder with the product 5 is established, which has the effect of minimizing the stresses on the thrust member imposing the law of advance of the product to be laminated.
  • the device ensuring the displacement of the working rolls in an orbit 3 according to the invention is produced by combination of eccentrics and connecting rods, three different embodiments of which are shown in FIGS. 2, 3 and 4 respectively.
  • Figures 2 and 3 each illustrate a device designed to allow the working cylinder 1 to travel in its orbit 3 entirely in the same direction (direction indicated by the arrows).
  • the device represented in FIG. 2 essentially consists, as can be seen, of three connecting rods 21, 22 and 23, of three eccentrics 24, 25 and 26 and of a connecting rod 27.
  • Each connecting rod is articulated at one of its ends (respectively 28, 29, 30) to an eccentric (24, 25, 26).
  • the connecting rod 21 is fixed at its other end to the axis 2 of the working cylinder 1.
  • the other two connecting rods 22, 23 form at their other end a rotary torque M and the rod 27 connects this movable point M to the axis 2
  • the trees of the three eccentrics rotate in the direction indicated by the arrows.
  • the rotational speeds are equal in absolute value, their ratios being kept fixed, for example by means of gears not shown in the figure.
  • One of the eccentrics is driven by a motor also not shown.
  • the axis 2 of the working cylinder traverses the contact arc AB from A to B by making contact with the product at A, this point constituting a cusp point (type b variant).
  • the device shown in Figure 3 comprises only two connecting rods 31, 32 and two eccentrics 33, 34.
  • the connecting rod 31 is connected to the axis 2 of the working cylinder and is extended beyond its point articulation 35 on the eccentric 34 to a movable point N forming a couple with the connecting rod 32 at its end opposite to that of its attachment 36 on the eccentric 33.
  • the two eccentrics rotate in opposite directions, as indicate the arrows, the rest being unchanged compared to the device described with reference to FIG. 3.
  • the axis 2 of the cylinder 1 traverses the working arc AB of A yers B by contacting the product at A, this point constituting an inflection point (type 0 variant).
  • the device shown in Figure 4 is similar to that of Figure 2. There are, according to the same organization, a set of three connecting rods 41, 42, 43 and three eccentrics 44, 45, 46, a connecting rod 47 and the joints 48, 49, 50 between the eccentrics and the connecting rods, as well as the mobile point M connecting the connecting rods 42, 43 and the rod 47 in a common torque.
  • one of the eccentrics in this case the eccentric 46 in the example shown, is driven in an alternating rotational movement less than one revolution, by a fourth eccentric 51 using an additional connecting rod 52, the eccentric shaft 53 being driven in continuous rotation by a motor.
  • the axis 2 of the working cylinder 1 traverses the working arc AB alternately from A to B then from B to A (rolling by "going up” in the latter case) and the cylinder therefore remains permanently in contact of the product to be laminated 5.

Abstract

1. A method for operating a planetary mill by which, assuming a horizontal rolling direction of the product to the rolled (5), the working cylinder (1) is made to travel in an orbit (3) on a portion (4) of which it is held in contact with the product to be rolled, the path of the cylinder on said portion having the shape of a horizontal "S", characterized in that, the cylinder being able to travel in its orbit (3) in one direction or the other, said path is limited by two points (A and B) where the tangents (Ta and Tb) to the orbit (3) are parallel to each other and to the direction of rolling of the product.

Description

La présente invention se rapporte à une famille de procédés de laminage dans laquelle les cylindres de travail sont mobiles dans l'espace et viennent au contact du produit périodiquement, sur tout ou partie de leur trajectoire. vThe present invention relates to a family of rolling methods in which the working rolls are movable in space and come into contact with the product periodically, over all or part of their trajectory. v

Des installations de laminage construites selon ce principe sont aujourd'hui bien connues sous la dénomination "laminoir planétaire" et présentent une conception particulière à partir d'une série de petits cylindres de travail horizontaux, disposés en "cage d'écureuil" tournant à grande vitesse autour de rouleaux d'appui montés en "duo" de part et d'autre du produit.Laminating plants built according to this principle are today well known under the name "planetary rolling mill" and have a particular design from a series of small horizontal working rolls, arranged in a "squirrel cage" rotating at great speed. speed around support rollers mounted in "duo" on both sides of the product.

Par commodité pour la suite, on convient de qualifier de "planétaire" tout laminoir, quelque soit sa conception, dont les cylindres de travail répondent aux critères de mobilité indiqués ci-avant.For convenience later, we agree to qualify as "planetary" any rolling mill, whatever its design, whose working rolls meet the mobility criteria indicated above.

On sait que le principe du laminoir planétaire résoud le problème du laminage de produits à vitesse de défilement très lente (par exemple de l'ordre de 1 m/mn) grâce à la superposition du mouvement de déplacement dans l'espace de l'axe géométrique du cylindre de travail avec son mouvement habituel de rotation sur lui-même, ce qui assure un temps de contact très court entre le produit à laminer et le cylindre.We know that the principle of the planetary rolling mill solves the problem of rolling products with very slow running speed (for example of the order of 1 m / min) thanks to the superposition of the movement of movement in the space of the axis. geometrical of the working cylinder with its usual rotational movement on itself, which ensures a very short contact time between the product to be laminated and the cylinder.

En dehors de la variante connue dite de "laminage oblique", dans laquelle le cylindre de travail est en permanence au contact du produit, lequel présente obligatoirement une symétrie périodique de révolution, (ce qui en limite singulièrement le domaine d'application), les principales variantes du laminage planétaire ont toutes en commun l'existence d'une discontinuité de vitesse entre l'orbite du cylindre et la direction de l'écoulement du métal à laminer à l'entrée du laminoir. Cette discontinuité se traduit par un choc relativement violent chaque fois qu'un cylindre arrive au contact du produit à laminer (de l'ordre de 2 à 3000 fois par mn), d'où il résulte des sollicitations mécaniques très sévères pour le matériel et des conditions de travail pénibles pour le personnel en raison du bruit occasionné.Apart from the known variant known as "oblique rolling", in which the working cylinder is permanently in contact with the product, which necessarily has a periodic symmetry of revolution, (which limits its field of application singularly), main variants of planetary rolling all have in common the existence of a speed discontinuity between the orbit of the cylinder and the direction of flow of the metal to be laminated at the entrance to the rolling mill. This discontinuity results in a relatively violent shock each time a cylinder comes into contact with the product to be laminated (of the order of 2 to 3000 times per minute), which results in very severe mechanical stresses on the material and harsh working conditions for staff due to noise.

Dans une version, proposée par la Société de droit anglais "Hille Engineering", le cylindre parcourt son orbite en remontant l'empoise de la cage-support et se raccorde quasi-tangentiellement avec le produit, ce qui devrait avoir pour effet de réduire le niveau sonore. A la connaissance de l'inventeur, cette solution n'a toutefois été proposée que pour les produits longs et impose un laminage "en remontant" (i.e. à l'opposé du sens de déplacement du produit à laminer), ce qui limite l'applicabilité du procédé.In one version, proposed by the English-law company "Hille Engineering", the cylinder travels its orbit up the chock of the support cage and is connected almost tangentially with the product, which should have the effect of reducing the sound level. To the knowledge of the inventor, this solution has however only been proposed for long products and requires rolling "up" (ie opposite the direction of movement of the product to be laminated), which limits the applicability of the process.

La présente invention a pour but de résoudre le problème de ces chocs répétitifs des nuisances sonores propres au laminoir planétaire à l'aide d'une solution qui ne présente pas les inconvénients des méthodes connues. v The object of the present invention is to solve the problem of these repetitive shocks from the noise disturbances specific to the planetary rolling mill by means of a solution which does not have the drawbacks of known methods. v

A cet effet, l'invention a pour objet un procédé pour la conduite d'un laminoir planétaire selon lequel le cylindre de travail parcourt une orbite sur une portion de laquelle au moins il vient au contact du produit à laminer, procédé caractérisé en ce que la direction de laminage du produit étant supposée horizontale, on confère au mouvement du cylindre, sur ladite portion de l'orbite, une trajectoire en forme de "5" à l'horizontale et limitée par deux points où les tangentes à l'orbite sont parallèles entre elles et à la direction de laminage du produit.To this end, the subject of the invention is a method for operating a planetary rolling mill according to which the working cylinder traverses an orbit over a portion of which at least it comes into contact with the product to be laminated, a method characterized in that the direction of rolling of the product being assumed to be horizontal, the movement of the cylinder is imparted on said portion of the orbit, a trajectory in the form of a "5" horizontally and limited by two points where the tangents to the orbit are parallel to each other and to the rolling direction of the product.

L'invention a également pour objet un dispositif de mise en oeuvre du procédé, caractérisé en ce qu'il est constitué par une combinaison d'excentriques et de bielles qui impriment à l'axe du cylindre de laminage un déplacement dans l'espace selon une orbite comportant une portion de trajectoire en forme de "S" à l'horizontale limitée par deux points où les tangentes à ladite orbite sont parallèles entre elles et à la direction de déplacement du produit à laminer.The invention also relates to a device for implementing the method, characterized in that it consists of a combination of eccentrics and connecting rods which impart a displacement in space along the axis of the rolling cylinder according to an orbit comprising a portion of trajectory in the form of an "S" to the horizontal limited by two points where the tangents to said orbit are parallel to each other and to the direction of movement of the product to be laminated.

L'invention sera mieux comprise et d'autres aspects et avantages apparaîtront plus clairement au vu de la description qui suit, donnés en références aux planches de dessins annexées, sur lesquelles :

  • - la figure 1 est un schéma de principe du procédé, montrant la portion de l'orbite du cylindre de travail au contact du produit,
  • - les figures 2, 3 et 4 sont des schémas de principe montrant différentes variantes de réalisation d'un dispositif pour la mise en oeuvre du procédé.
The invention will be better understood and other aspects and advantages will appear more clearly in the light of the description which follows, given with reference to the plates of attached drawings, in which:
  • FIG. 1 is a block diagram of the process, showing the portion of the orbit of the working cylinder in contact with the product,
  • - Figures 2, 3 and 4 are block diagrams showing different alternative embodiments of a device for implementing the method.

Sur la figure 1, on a représenté en 1 un cylindre de travail dont l'axe 2 parcourt une orbite 3 en boucle fermée. Pour une meilleure compréhension de l'invention, seule la partie de l'orbite proche du produit à laminer 5 est représentée sur la figure.In Figure 1, there is shown at 1 a working cylinder whose axis 2 traverses an orbit 3 in a closed loop. For a better understanding of the invention, only the part of the orbit close to the product to be laminated 5 is shown in the figure.

Plus précisément, la portion 4 de cette orbite, portion le long de laquelle le cylindre 1 est au contact du produit 5, présente une trajectoire en forme de "S" à l'horizontale limitée par deux points extrêmes A et B où les tangentes TA, TB à l'orbite 3 menées en ces points sont parallèles entre elles et parallèles à la direction de laminage du produit 5, indiquée par la flèche V sur la figure et qui, en pratique, peut être considérée généralement comme parfaitement horizontale.More specifically, the portion 4 of this orbit, the portion along which the cylinder 1 is in contact with the product 5, has a trajectory in the form of an "S" horizontally limited by two extreme points A and B where the tangents T A , T B at orbit 3 carried at these points are mutually parallel and parallel to the rolling direction of the product 5, indicated by the arrow V in the figure and which, in practice, can generally be considered as perfectly horizontal.

La trajectoire 4 présente avantageusement un point d'inflexion 1 pour assurer un déplacement régulier du cylindre 1 entre les points extrêmes A et B.The trajectory 4 advantageously has an inflection point 1 to ensure a regular displacement of the cylinder 1 between the extreme points A and B.

Pour permettre le laminage, un système antagoniste A'I'B' est disposé symétriquement au premier système A.I.B. par rapport au produit à laminer 5. On retrouve dans ce système antagoniste A'I'R' les mêmes éléments et dispositions, que dans le système A.I.B. repérés par des références qui sont différenciées seulement par le signe "prime".To allow rolling, an opposing system A'I'B 'is arranged symmetrically with the first system A.I.B. compared to the product to be laminated 5. We find in this opposing system A'I'R 'the same elements and arrangements, as in the system A.I.B. identified by references which are differentiated only by the sign "prime".

Les axes 2, 2' des cylindres de travail 1, l' sont horizontaux et perpendiculaires au plan de la figure. On voit donc que l'épaisseur du produit laminé 5 est ainsi réduite de la quantité 2d (d étant la distance séparant les tangentes TA et TB - respectivement TA I et TB'-), lorsque les cylindres 1 et l' parcourent leur arc respectif AB et A'B'.The axes 2, 2 'of the working rolls 1, l' are horizontal and perpendicular to the plane of the figure. It can therefore be seen that the thickness of the rolled product 5 is thus reduced by the quantity 2d (d being the distance separating the tangents T A and T B - respectively T A I and T B '-), when the cylinders 1 and the cross their respective arc AB and A'B '.

Ces cylindres peuvent parcourir leur arc dans un sens ou dans l'autre, étant entendu qu'ils se déplacent simultanément dans le même sens. Dans la suite de la description, on ne considèrera, pour simplifier, que le déplacement du cylindre de travail supérieur 1. Lorsque, comme le montre la figure, ce cylindre parcourt l'arc AB de A vers B, il vient au contact du produit 5 en A et le quitte en B. Entre ces deux points, le contact avec le produit est permanent pour exercer l'effort de laminage, et le cylindre roule sur la surface du produit, dans le sens de rotation indiqué par les flèches.These cylinders can travel their arc in one direction or the other, it being understood that they move simultaneously in the same direction. In the following description, we will consider, for simplicity, only the displacement of the upper working cylinder 1. When, as shown in the figure, this cylinder traverses the arc AB from A to B, it comes into contact with the product 5 at A and leaves at B. Between these two points, the contact with the product is permanent to exert the rolling force, and the cylinder rolls on the surface of the product, in the direction of rotation indicated by the arrows.

Conformément à l'invention, la partie de l'orbite 3 située au delà du point A, i.e. la partie de la trajectoire qu'emprunte l'axe 2 juste avant la venue du cylindre au contact du produit à laminer en A, peut :

  • - ou se poursuivre, de l'autre côté de la tangente TA, sans modification sensible de la direction du secteur vitesse, le point A étant alors un point d'inflexion (variante repérée par la lettre cerclée ⓐ sur la figure),
  • - ou, selon une autre variante, se poursuivre avec inversion du sens du secteur vitesse, le point A étant dans ce cas un point de rebroussement (variante repérée par la lettre cerclée ⓑ).
In accordance with the invention, the part of orbit 3 located beyond point A, ie the part of the path taken by axis 2 just before the cylinder comes into contact with the product to be laminated at A, can:
  • - or continue, on the other side of the tangent T A , without appreciable modification of the direction of the speed sector, the point A then being an inflection point (variant identified by the circled letter ⓐ in the figure),
  • - or, according to another variant, continue with reversing the direction of the speed sector, point A being in this case a cusp point (variant identified by the circled letter ⓑ).

Quelque soit la variante mise en oeuvre, la trajectoire du cylindre 1 raccorde tangentiellement la surface du produit à laminer 5 et il ne peut, de ce fait, y avoir de choc.Whatever the variant used, the trajectory of the cylinder 1 tangentially connects the surface of the product to be laminated 5 and there can therefore be no shock.

Il va de soi que les dispositions précédentes s'appliquent également à l'égard du point B si l'on souhaite laminer le produit 5 en "remontant", c'est-à-dire si le cylindre 1 doit parcourir son arc de travail AB dans le sens allant de B vers A. Dans ce cas toutefois, il faut observer que le raccordement en B n'est pas rigoureusement tangentiel à la surface du produit 5 en raison de la légère avance de ce dernier pendant le temps où le cylindre 1 boucle son orbite 3 de A vers B en dehors de la portion 4 (cas où l'orbite 3 est parcouru en totalité toujours dans le même sens). Il pourra donc se produire en B un choc très léger, mais dont le niveau sonore demeure sans commune mesure avec le bruit occasionné par les procédés connus existants.It goes without saying that the preceding provisions also apply with regard to point B if it is desired to laminate product 5 in "upward", that is to say if the cylinder 1 must traverse its working arc AB in the direction going from B towards A. In this case however, it should be observed that the connection at B is not strictly tangential on the surface of the product 5 due to the slight advance of the latter during the time when the cylinder 1 loops its orbit 3 from A to B outside of the portion 4 (case where the orbit 3 is completely traversed always in the Same direction). A very slight shock may therefore occur at B, but the noise level of which remains incommensurate with the noise caused by existing known processes.

Par contre, dans le cas où l'arc de travail AB est parcouru alternativement de A vers B puis de B vers A, le cylindre 1 reste donc en permanence en contact du produit à laminer 5 et il n'y aura par conséquent aucun choc.On the other hand, in the case where the working arc AB is traversed alternately from A to B then from B to A, the cylinder 1 therefore remains permanently in contact with the product to be laminated 5 and there will consequently be no shock .

Par ailleurs, pour ne pas risquer de nuire à la bonne qualité de surface des produits laminés, on a avantage à éviter un patinage du cylindre sur le produit au moment de la venue en contact.Furthermore, in order not to risk adversely affecting the good surface quality of the laminated products, it is advantageous to avoid slippage of the cylinder on the product when it comes into contact.

A cet effet, conformément à une mise en oeuvre préférée de l'invention, on imprime au cylindre, au moment de sa venue au contact du produit, une vitesse de rotation égale, ou en tout cas voisine, de celle qui correspond aux conditions de roulement du cylindre sur le produit à laminer (celle-ci étant définie, donc prédéterminable comme on le sait et comme on sait la calculer, à partir de la vitesse du produit à laminer, et des valeur et direction de la vitesse du cylindre sur son orbite au moment du contact avec le produit).To this end, in accordance with a preferred implementation of the invention, the cylinder is printed, when it comes into contact with the product, a speed of rotation equal to, or in any case close to, that which corresponds to the conditions of rolling of the cylinder on the product to be laminated (this being defined, therefore predeterminable as we know and as we know how to calculate it, from the speed of the product to be laminated, and the value and direction of the speed of the cylinder on its orbit upon contact with the product).

Bien entendu, dans le cas de la variante @ , la vitesse de déplacement du cylindre étant nécessairement nulle au moment de la venue en contact en A (puisque ce dernier est un point de rebroussement), la vitesse de rotation du cylindre autour de son axe 2 sera avantageusement nulle à cet instant également.Of course, in the case of variant @, the speed of movement of the cylinder being necessarily zero at the time of coming into contact at A (since the latter is a cusp), the speed of rotation of the cylinder around its axis 2 will advantageously be zero at this time also.

De même, les problèmes éventuels de synchronisation de la vitesse de rotation du cylindre au moment du contact ne se posent pas dans le cas où l'arc de travail est parcouru alternativement de A vers B puis de R vers A, puisque le cylindre de travail reste alors en permanence au contact du produit à laminer.Likewise, the possible problems of synchronization of the speed of rotation of the cylinder at the time of contact does not arise in the case where the working arc is traversed alternately from A to B then from R to A, since the working cylinder then remains permanently in contact with the product to be laminated.

Quelque soit la variante retenue, le cylindre de travail est entraîné en rotation autour de son axe 2 sous l'effet des cissions qui prennent naissance au contact du produit laminé. L'énergie est fournie par les moteurs commandant le système qui engendre le mouvement du cylindre sur son orbite.Whatever variant is selected, the working cylinder is rotated about its axis 2 under the effect of cissions which arise on contact with the rolled product. Energy is supplied by the motors controlling the system which generates the movement of the cylinder in its orbit.

Dans le ces du laminage planétaire pluricylindre classique, tel qu'évoqué au début, la composante horizontale de la résultante des forces agissant le long de l'arc de contact AB est dirigée dans le sens opposé à celui du laminage, ce qui a pour effet un rejet vers l'arrière de la matière à laminer. Cette force doit donc être équilibrée par un organe pousseur qui est généralement une première cage "duo" ordinaire placée en amont du planétaire par rapport au sens de laminage et qui impose au produit à laminer une loi de déplacement, ladite force étant maximale au moment où le cylindre de travail vient au contact du produit.In the case of conventional multi-cylinder planetary rolling, as mentioned at the beginning, the horizontal component of the resultant of the forces acting along the contact arc AB is directed in the opposite direction to that of rolling, which has the effect a rearward discharge of the material to be laminated. This force must therefore be balanced by a pusher member which is generally a first ordinary "duo" cage placed upstream of the sun gear with respect to the rolling direction and which imposes on the product to be laminated a law of displacement, said force being maximum at the moment when the working cylinder comes into contact with the product.

Dans le procédé selon l'invention, la forme d'"S" à l'horizontale de l'arc de contact AB est telle que cette force de poussée est minimale quand le contact du cylindre avec le produit 5 s'établit, ce qui a pour effet de minimiser les sollicitations sur l'organe de poussée imposant la loi d'avancement du produit à laminer.In the process according to the invention, the shape of the horizontal "S" of the contact arc AB is such that this thrust force is minimal when the contact of the cylinder with the product 5 is established, which has the effect of minimizing the stresses on the thrust member imposing the law of advance of the product to be laminated.

Le dispositif assurant le déplacement des cylindres de travail selon une orbite 3 conforme à l'invention est réalisé par combinaison d'excentriques et de bielles, dont trois différentes formes de réalisation sont représentées sur les figures 2, 3 et 4 respectivement..The device ensuring the displacement of the working rolls in an orbit 3 according to the invention is produced by combination of eccentrics and connecting rods, three different embodiments of which are shown in FIGS. 2, 3 and 4 respectively.

Les figures 2 et 3 illustrent chacune un dispositif conçu pour permettre au cylindre de travail 1 de parcourir son orbite 3 en totalité dans le même sens (sens indiqué par les flèches).Figures 2 and 3 each illustrate a device designed to allow the working cylinder 1 to travel in its orbit 3 entirely in the same direction (direction indicated by the arrows).

Le dispositif représenté sur la figure 2 se compose essentiellement, comme on le voit, de trois bielles 21, 22 et 23, de trois excentriques 24, 25 et 26 et d'une tringle de liaison 27.The device represented in FIG. 2 essentially consists, as can be seen, of three connecting rods 21, 22 and 23, of three eccentrics 24, 25 and 26 and of a connecting rod 27.

Chaque bielle est articulée à l'une de ses extrémités (respectivement 28, 29, 30) à un excentrique (24, 25, 26). La bielle 21 est fixée à son autre extrémité sur l'axe 2 du cylindre de travail 1. Les deux autres bielles 22, 23 forment à leur autre extrémité un couple rotatif M et la tringle 27 relie ce point mobile M à l'axe 2. Les arbres des trois excentriques tournent dans le sens indiqué par les flèches. Les vitesses de rotation sont égales en valeur absolue, leurs rapports étant maintenus fixes, par exemple au moyen d'engrenages non-représentés sur la figure. L'un des excentriques est entraîné par un moteur également non représenté.Each connecting rod is articulated at one of its ends (respectively 28, 29, 30) to an eccentric (24, 25, 26). The connecting rod 21 is fixed at its other end to the axis 2 of the working cylinder 1. The other two connecting rods 22, 23 form at their other end a rotary torque M and the rod 27 connects this movable point M to the axis 2 The trees of the three eccentrics rotate in the direction indicated by the arrows. The rotational speeds are equal in absolute value, their ratios being kept fixed, for example by means of gears not shown in the figure. One of the eccentrics is driven by a motor also not shown.

Dans ces conditions, l'axe 2 du cylindre de travail parcourt l'arc de contact AB de A vers B en prenant contact avec le produit en A, ce point constituant un point de rebroussement (variante de type b).Under these conditions, the axis 2 of the working cylinder traverses the contact arc AB from A to B by making contact with the product at A, this point constituting a cusp point (type b variant).

Le dispositif représenté sur la figure 3 comprend seulement deux bielles 31, 32 et deux excentriques 33, 34. La bielle 31 est reliée à l'axe 2 du cylindre de travail et se trouve prolongée au delà de son point d'articulation 35 sur l'excentrique 34 jusqu'à un point mobile N formant un couple avec la bielle 32 à son extrémité opposée à celle de son attache 36 sur l'excentrique 33. Les deux excentriques tournent dans des sens opposés, comme l'indiquent les flèches, le reste étant inchangé par rapport au dispositif décrit en référence à la figure 3.The device shown in Figure 3 comprises only two connecting rods 31, 32 and two eccentrics 33, 34. The connecting rod 31 is connected to the axis 2 of the working cylinder and is extended beyond its point articulation 35 on the eccentric 34 to a movable point N forming a couple with the connecting rod 32 at its end opposite to that of its attachment 36 on the eccentric 33. The two eccentrics rotate in opposite directions, as indicate the arrows, the rest being unchanged compared to the device described with reference to FIG. 3.

Dans ces conditions, l'axe 2 du cylindre 1 parcourt l'arc de travail AB de A yers B en prenant contact avec le produit en A, ce point constituant un point d'inflexion (variante de type 0 ).Under these conditions, the axis 2 of the cylinder 1 traverses the working arc AB of A yers B by contacting the product at A, this point constituting an inflection point (type 0 variant).

Le dispositif représenté sur la figure 4 est similaire à celui de la figure 2. On y retrouve, selon la même organisation, un jeu de trois bielles 41, 42, 43 et de trois excentriques 44, 45, 46, une tringle de liaison 47 et les articulations 48, 49, 50 entre les exentriques et les bielles, ainsi que le point mobile M reliant les bielles 42, 43 et la tringle 47 en un couple de rotation commun.The device shown in Figure 4 is similar to that of Figure 2. There are, according to the same organization, a set of three connecting rods 41, 42, 43 and three eccentrics 44, 45, 46, a connecting rod 47 and the joints 48, 49, 50 between the eccentrics and the connecting rods, as well as the mobile point M connecting the connecting rods 42, 43 and the rod 47 in a common torque.

A la différence toutefois du dispositif représenté sur la figure 2, l'un des excentriques, en l'occurence l'excentrique 46 dans l'exemple représenté, est entraîné selon un mouvement de rotation alternatif inférieur à un tour, par un quatrième excentrique 51 à l'aide d'une bielle supplémentaire 52, l'arbre de l'excentrique 53 étant entraîné en rotation continue par un moteur.Unlike, however, the device shown in FIG. 2, one of the eccentrics, in this case the eccentric 46 in the example shown, is driven in an alternating rotational movement less than one revolution, by a fourth eccentric 51 using an additional connecting rod 52, the eccentric shaft 53 being driven in continuous rotation by a motor.

Dans ces conditions, l'axe 2 du cylindre de travail 1 parcourt l'arc de travail AB alternativement de A vers B puis de B vers A (laminage en "remontant" dans ce dernier cas) et le cylindre reste donc en permanence au contact du produit à laminer 5.Under these conditions, the axis 2 of the working cylinder 1 traverses the working arc AB alternately from A to B then from B to A (rolling by "going up" in the latter case) and the cylinder therefore remains permanently in contact of the product to be laminated 5.

Bien entendu, l'invention ne saurait se limiter aux exemples décrits, mais s'étend à de multiples variantes ou équivalents dans la mesure où sont respectées les caractéristiques énoncées dans les revendications jointes.Of course, the invention cannot be limited to the examples described, but extends to multiple variants or equivalents insofar as the characteristics set out in the appended claims are respected.

Claims (6)

1) Procédé de conduite d'un laminoir planétaire selon lequel le cylindre de travail (1) parcourt une orbite (3) sur une portion (4) au moins de laquelle, il vient au contact du produit à laminer (5), procédé caractérisé en ce que la direction de laminage (V) du produit (5) étant supposée horizontale, on confère au mouvement du cylindre (1) sur ladite portion (4) une trajectoire en forme de "S" à l'horizontale, limitée par deux points (A et B) où les tangentes (Ta et Tb) à l'orbite (3) sont parallèles entre-elles et à la direction de laminage du produit (5).1) Method for driving a planetary rolling mill according to which the working cylinder (1) traverses an orbit (3) over at least a portion (4) of which it comes into contact with the product to be laminated (5), characterized process in that the rolling direction (V) of the product (5) being assumed to be horizontal, the movement of the cylinder (1) on said portion (4) is given a horizontal "S" shaped trajectory, limited by two points (A and B) where the tangents (T a and T b ) to the orbit (3) are parallel to each other and to the rolling direction of the product (5). 2) Procédé selon la revendication 1 caractérisé en ce que le point (A ou B) de la portion (4) où le cylindre (1) vient au contact du produit à laminer (5) est un point d'inflexion de l'orbite (3) de déplacement dudit cylindre.2) Method according to claim 1 characterized in that the point (A or B) of the portion (4) where the cylinder (1) comes into contact with the product to be laminated (5) is an inflection point of the orbit (3) movement of said cylinder. 3) Procédé selon la revendication 1 caractérisé en ce que le point (A ou B) de la portion (4) où le cylindre (1) vient au contact du produit à laminer (5) est un point de rebroussement de l'orbite (3) de déplacement dudit cylindre.3) Method according to claim 1 characterized in that the point (A or B) of the portion (4) where the cylinder (1) comes into contact with the product to be laminated (5) is a cusp of the orbit ( 3) displacement of said cylinder. 4) Procédé selon les revendications 1 ou 2 caractérisé en ce que la portion de trajectoire (4) présente, entre ses deux points extrêmes, (A et B), un point d'inflexion (1).4) Method according to claims 1 or 2 characterized in that the trajectory portion (4) has, between its two extreme points (A and B), an inflection point (1). 5) Procédé selon la revendication 2 caractérisé en ce que l'on imprime au cylindre (1), au moment de son contact avec le produit à laminer (5), une vitesse de rotation autour de son axe (2) égale ou sensiblement égale à celle qui correspond aux conditions de roulement du cylindre sur le produit en cours de laminage.5) Method according to claim 2 characterized in that one prints to the cylinder (1), at the time of its contact with the product to be laminated (5), a speed of rotation about its axis (2) equal or substantially equal to that which corresponds to the rolling conditions of the cylinder on the product being rolled. 6) Dispositif pour la mise en oeuvre du procédé selon la revendication 1 caractérisé en ce qu'il est constitué par une combinaison d'excentriques et de bielles qui impriment à l'axe (2) du cylindre de travail (1) un déplacement dans l'espace selon une orbite comportant une portion de trajectoire (4) en forme d "S" à l'horizontale limitée par deux points (A et B) où les tangentes à ladite orbite sont parallèles entre-elles et à la direction de laminage du produit, celle-ci étant supposée horizontale.6) Device for implementing the method according to claim 1 characterized in that it is constituted by a combination of eccentrics and connecting rods which print on the axis (2) of the working cylinder (1) a movement in space in an orbit comprising a portion of trajectory (4) in the form of an "S" in the horizontal bounded by two points (A and B) where the tangents to said orbit are parallel to each other and to the direction of rolling of the product, the latter being assumed to be horizontal.
EP19830402081 1982-11-08 1983-10-26 Method for planetary mill operation Expired EP0109323B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8218840A FR2535628B1 (en) 1982-11-08 1982-11-08 METHOD FOR CONDUCTING A PLANETARY ROLLER AND IMPLEMENTING DEVICE
FR8218840 1982-11-08

Publications (2)

Publication Number Publication Date
EP0109323A1 true EP0109323A1 (en) 1984-05-23
EP0109323B1 EP0109323B1 (en) 1988-05-04

Family

ID=9279062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830402081 Expired EP0109323B1 (en) 1982-11-08 1983-10-26 Method for planetary mill operation

Country Status (4)

Country Link
EP (1) EP0109323B1 (en)
JP (1) JPS5997704A (en)
DE (1) DE3376470D1 (en)
FR (1) FR2535628B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978933A (en) * 1958-03-05 1961-04-11 Sendzimir Tadeusz Beambacked planetary rolling mill
FR1562565A (en) * 1967-06-23 1969-04-04
FR2252141A1 (en) * 1973-11-13 1975-06-20 Pk I

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978933A (en) * 1958-03-05 1961-04-11 Sendzimir Tadeusz Beambacked planetary rolling mill
FR1562565A (en) * 1967-06-23 1969-04-04
FR2252141A1 (en) * 1973-11-13 1975-06-20 Pk I

Also Published As

Publication number Publication date
DE3376470D1 (en) 1988-06-09
FR2535628B1 (en) 1985-06-21
JPS5997704A (en) 1984-06-05
EP0109323B1 (en) 1988-05-04
FR2535628A1 (en) 1984-05-11

Similar Documents

Publication Publication Date Title
EP0143820B1 (en) Gear transmission comprising two worm screws
FR2525194A1 (en)
EP0488919B1 (en) Device with articulated metal band, in particular for shifting heavy loads
WO2018122524A1 (en) Device for transferring products
EP0638496A1 (en) Method and means for introducing sheet-like material in a machine
EP0337891A1 (en) Inclined accumulation conveyor with load carriers driven by endless chains
EP0742170B1 (en) Device for feeding a web in a station working on it in a stopped condition, the web being fed in a continuous manner
EP0109323B1 (en) Method for planetary mill operation
EP2147779B1 (en) Vibrating press for the production of construction elements and method for producing construction elements
FR2551166A1 (en) FLEXIBLE DRIVE TRANSMISSION DEVICE
FR2476290A1 (en) ROLL TUNNEL OVEN FOR COOKING CERAMIC PRODUCTS, ESPECIALLY SOIL COATING TILES
FR2703626A1 (en) Arrangement and method for removing stains from the plate cylinder in a lithographic press.
FR2464617A1 (en) ROTARY MOUNTED PLOW
EP2484511A1 (en) Ultrasonic welding device
FR2527990A1 (en) METHOD AND INSTALLATION FOR POSITIONING CYLINDERS AND ROLLS ON PRINTING MACHINES
EP0528728B1 (en) Device for rotating the spindles of a polishing barrel
FR2707081A1 (en) A method of controlling the operation of a rotary jaw closure unit for a packaging machine.
EP1867232B1 (en) Device for moulding dough pieces.
FR2478517A1 (en) METHOD AND DEVICE FOR CONTROLLING MOVEMENTS IN ADVANCE AND CLEARANCE, ESPECIALLY IN WOOD SLICERS
EP3328735B1 (en) Ejector guide device
FR2504507A1 (en) DEVICE FOR DRIVING, IN A PROGRESSIVE MOTION, OF A GUIDED MEMBER ON STRAIGHT TRACKS, PARTICULARLY SUITABLE FOR DRIVING TELESCOPIC FORKS OF HANDLING TROLLEYS
EP0156151A1 (en) Universal planetary rolling mill for long products
CH670466A5 (en)
EP0920957A1 (en) Tangential polishing head for lapping granit and glazed stone
CA1285793C (en) Rotating work roller drive of a planetary rolling mill for elongate parts

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE GB IT LI SE

17P Request for examination filed

Effective date: 19841109

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE GB IT LI SE

REF Corresponds to:

Ref document number: 3376470

Country of ref document: DE

Date of ref document: 19880609

ITF It: translation for a ep patent filed

Owner name: MANZONI & MANZONI

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910823

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19910918

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19910919

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19911017

Year of fee payment: 9

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19921026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19921027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19921031

Ref country code: CH

Effective date: 19921031

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19921026

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19930701

EUG Se: european patent has lapsed

Ref document number: 83402081.0

Effective date: 19930510