EP3255510B1 - Calender and method for calendering a timepiece barrel spring - Google Patents

Calender and method for calendering a timepiece barrel spring Download PDF

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Publication number
EP3255510B1
EP3255510B1 EP16173898.4A EP16173898A EP3255510B1 EP 3255510 B1 EP3255510 B1 EP 3255510B1 EP 16173898 A EP16173898 A EP 16173898A EP 3255510 B1 EP3255510 B1 EP 3255510B1
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EP
European Patent Office
Prior art keywords
support
guide means
press
wire
roller press
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.)
Active
Application number
EP16173898.4A
Other languages
German (de)
French (fr)
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EP3255510A1 (en
Inventor
Jonas Vannod
Christian Charbon
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.)
Nivarox Far SA
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox SA
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 Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to EP16173898.4A priority Critical patent/EP3255510B1/en
Priority to JP2017104208A priority patent/JP6345845B2/en
Priority to US15/615,263 priority patent/US10456825B2/en
Priority to RU2017120151A priority patent/RU2681514C2/en
Priority to CN201710432174.9A priority patent/CN107486515B/en
Publication of EP3255510A1 publication Critical patent/EP3255510A1/en
Priority to HK18107425.0A priority patent/HK1247889A1/en
Application granted granted Critical
Publication of EP3255510B1 publication Critical patent/EP3255510B1/en
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B5/00—Automatic winding up
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B21F3/08—Coiling wire into particular forms to flat spiral
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/14—Mainsprings; Bridles therefor
    • G04B1/145—Composition and manufacture of the springs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/066—Manufacture of the spiral spring
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0005—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for parts of driving means
    • G04D3/0007—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for parts of driving means for springs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0035—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism
    • G04D3/0041—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism for coil-springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F35/00—Making springs from wire
    • B21F35/02—Bending or deforming ends of coil springs to special shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making

Definitions

  • the invention relates to a method of calendering the spiral portion of a watch-spring, from a lace drawn and pre-rolled, said lace comprising, successively, from a beginning of the blade, a shell shaped beforehand calendering, with a curvature whose center is on an outer side of said lace, said shell being followed by a neck having a zone of zero curvature and forming a zone of inflection, and said neck being followed by a zone of accumulation which is intended to be, during said calendering operation, spirally calendered in a curvature whose center is an inner side of said lace, opposite said outer side, said accumulation zone ending in a tape end.
  • the invention relates to the field of manufacture of clock springs.
  • clock springs are complex, and requires many steps, including a step of ringing and / or a calendering step of a portion of a lace at one end of which has been previously formed a shell, to form the leaf of the spring.
  • This calendering operation is delicate, and requires perfect reproducibility.
  • the handling of the spring is inconvenient at the exit of the calendering operation.
  • the document CH708674A2 in the name of General Ressort describes a device for shaping a wire during a method of manufacturing a mainspring, comprising a wire drive system in two directions opposite to each other. other, and comprising a device for guiding and ejecting the wire; the equipment also includes a calendering device in the first direction with reference to the drive system, a shovel device in the second opposite direction, and a central wire guide arranged at the drive system for cooperate with at least one of the calendering and shearing devices to deform the wire.
  • the document WO2008 / 102388A1 in the name of Boldrini Spa describes a calender comprising a support carrying two rollers and a pressure roller which, in cooperation with each other, define a curved feed path for a bending plate.
  • the rollers are movable relative to the pressure roll to vary at least one curvature value of the feed path.
  • the apparatus further comprises a pair of articulated kinematic mechanisms, each of which acts on a respective roller to move it along a plurality of trajectories located in a plane transverse to the axis of rotation of the roller.
  • the purpose of the calendering is to guarantee the functioning of the spring. Indeed, the entire leaf spring must provide the maximum torque when disarming the spring. That is, for each location on the blade, the spring surface is constrained to its elastic limit in the fully-armed state.
  • the invention proposes to modify the calendering so as to avoid a conventional and expensive operation, ring setting the spring for the end of its development, for example for the execution of a treatment. And, more particularly, to produce a storable intermediate product that can be handled flat.
  • the invention must make it possible to avoid unnecessary loading of processing facilities with bulky tools, and to facilitate handling of the springs while eliminating the usual debugging.
  • the calendering process consists of constraining the spring blade between two rollers and a motorized rod to make a three-point bending of the blade, to deform plastically.
  • the calendering is usually done at a constant diameter, which involves a stack of turns, which can not return to their flattened shape once out of the plane. This problem is all the more important as the diameter of the spring is small.
  • the invention proposes the implementation of a progressive or variable calendering technique, which makes it possible to produce a calendered spring with a space, constant or variable depending on the settings, between the turns.
  • the goal is to facilitate handling in subsequent operations of the manufacturing process, and to remove the usual mattress.
  • the invention makes it possible to guarantee a calender of smaller diameter at the calendered portion which corresponds to the beginning of the process, and to increase the diameter while approaching the shell.
  • the principle of the invention also consists in constraining the blade between three points to exceed the elastic limit locally in the blade and thus form the calendered portion.
  • the invention relates to a method of calendering a mainspring according to claim 1.
  • the invention relates to a method of calendering the spiral portion of a clock spring 100 watchmaking, from a lace 1 drawn and pre-rolled.
  • This lace 1, of thickness "eā€, comprises successively, since a blade start, a shell 2 shaped prior to calendering, with a curvature whose center is an outer side of the lace 1.
  • This shell 2 is followed by a neck 3, of length LC, having a zone of zero curvature 4 and forming a zone of inflection.
  • this neck 3 is followed by an accumulation zone 5, which alone relates to the calendering operation according to the invention, and which is intended to be, during this calendering operation, calendered in a spiral according to a curvature of which the center is an inner side of the lace 1, opposite to the outer side.
  • the accumulation zone 5 terminates in a strip end 6, and may advantageously, but not necessarily, include a short final LF non-spiral length, which constitutes the primer by which the calendering operation is started.
  • the operation is a variable calendering operation, and more particularly a progressive calendering operation.
  • a calender 20 which comprises at least a first support and guide means 10 arranged to exert a force F on the yaw 1 in a first intermediate contact zone A, which is situated between a second B and a third C extreme contact zones that comprise respectively a second 12 and a third 13 support and guiding means, which comprises the calender 20, for winding the accumulation zone 5 with a curvature opposite to that of the shell 2.
  • the position of the first contact zone A is gradually changed away from the second B and third C contact zones, to vary the calender radius since a first minimum value R1 to a second maximum value R2 at the junction between the accumulation zone 5 and the neck 3, where the calendering operation is stopped.
  • the figure 3 illustrates the contacting of the lace 1 with the three bearing and guiding means 10, 12, 13, distributed on either side of this lace 1, at the beginning of the calendering
  • the figure 4 illustrates the pressurization of the support and intermediate guide means 10, on the lace 1.
  • the figure 6 represents the deformation of the contact triangle ABC between the three bearing and guiding means 10, 12, 13, and the lace 1, during the advancement of the intermediate support and guide means 10 with respect to the two extremes 12 and 13.
  • the third support and guiding means 13 are maintained in a fixed position.
  • the second support and guiding means 12 are maintained in a fixed position.
  • the first support and guiding means 10 are moved relative to the second 12 and third 13 support and guiding means which are fixed.
  • the first support and guiding means 10 and / or the second support and guiding means 12 are moved relative to the third support and guiding means 13 which is in a fixed position.
  • a carriage 11 carrying the first support and guiding means 10 is displaced, with at least one degree of freedom, to exert this force F on the lace 1.
  • FIG. 3 and 4 illustrate a particular non-limiting embodiment with a pivoting of the carriage 11, which allows to show a particular deformability of the triangle ABC supports.
  • a deflector 15 is interposed on the path of the lace 1 after its exit from the calender zone to ensure its correct winding.
  • the first support and guide means 10, the second support and guide means 12, and the third support and guide means 13 may each be in the form of a fixed shaft, a idler roller, or a motorized roller to ensure the advance of the lace 1 in the shell 20.
  • the second support and guiding means 12 and the third support and guiding means 13 are both motorized, and the first tends to impress the shoelace with a tangential velocity slightly greater than the second.
  • the invention is illustrated in a particular nonlimiting example where the first support and guide means 10 is a rod, the second support and guide means 12 and the third support and guide means 13 are two rollers .
  • the contact surfaces between the rod 10, the two rollers 12, 13, and the lace 1 determine on the latter a profile close to an arc with a certain instantaneous curvature.
  • this instantaneous curvature must vary approximately regularly during all the calendering of the spiral accumulation zone 5.
  • a regularly increasing pressure is applied as a function of the advance of the lace 1, defined by the speed of rotation of at least one motorized roller, which may be the roller 14 of the figure 2 , or the roller 12 and / or the roller 13, this rotational speed being also adjustable.
  • the calender 20 used for the implementation of this method advantageously comprises the various devices described above.
  • this calender 20 comprises, on either side of a calendering zone arranged to receive a lace 1 provided beforehand with a shell 2 at one end, a first side at least a first means of support and guide 10 arranged to exert a force F on such a lace 1 in a first intermediate contact zone A, which is located between a second B and a third C extreme contact zones that respectively comprise a second 12 and a third 13 support and guiding means, which comprises the calender 20 on a second side opposite to the first side with respect to the calender zone.
  • the exercise of this effort F on the lace 1 creates on it an accumulation zone 5 with a curvature opposite that of the shell 2.
  • first support and guide means 10 is movable relative to the second 12 and third 13 support and guiding means.
  • the calender 20 comprises means for moving the first support and guiding means 10 to create such a variable force F.
  • these displacement means are arranged to print to a movable carriage 11 carrying this at least one first support and guide means 10, an advance movement, or a regular advance movement, for the realization of a progressive calendering. More particularly, the displacement means are arranged to print to a mobile carriage 11 at least one pivoting movement.
  • the calender 20 comprises a deflector 15 interposed on the path of the lace 1 after its exit from the calender zone to ensure its correct winding.
  • this deflector 15 can be motorized, and movable in one or more degrees of freedom.
  • first support and guiding means 10 and / or the second support and guiding means 12 and / or the third support and guiding means 13 is in the form of a motorized roller to ensure the advance of the lace 1 in the calender area. More particularly, at least two of these first support and guiding means 10, second support and guiding means 12, third support and guiding means 13, are motorized in a non-synchronous manner, so as to ensure lace tension 1 in the calender zone.
  • the calender 20 comprises at least one drive roller 14 motorized to ensure the advance of the lace 1 in the calender zone.
  • the calender 20 may advantageously comprise driving means and / or storage means for controlling the different motorized components and reproducing identically stored sequences for obtaining springs in a reproducible manner.
  • These control means can, again, be combined with sensors for measuring the thickness of the spring downstream of the calendering zone, and / or measuring its concavity after calendering.
  • the invention makes it possible to produce a clock spring 100, whose turns are not contiguous, and are distant from each other in the free state of the spring. More particularly, this spring 100 is a teflon spring, whose Teflon turns are spaced apart from each other in the free state of the spring. The invention allows the realization of such a spring.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Springs (AREA)
  • Wire Processing (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Metal Rolling (AREA)

Description

Domaine de l'inventionField of the invention

L'invention concerne un procĆ©dĆ© de calandrage de la partie spirale d'un ressort de barillet d'horlogerie, Ć  partir d'un lacet trĆ©filĆ© et laminĆ© au prĆ©alable, ledit lacet comportant successivement, depuis un dĆ©but de lame, un coquillon faƧonnĆ© prĆ©alablement audit calandrage, avec une courbure dont le centre est d'un cĆ“tĆ© extĆ©rieur dudit lacet, ledit coquillon Ć©tant suivi d'un cou comportant une zone de courbure nulle et formant une zone d'inflexion, et ledit cou Ć©tant suivi d'une zone d'accumulation laquelle est destinĆ©e Ć  ĆŖtre, lors de ladite opĆ©ration de calandrage, calandrĆ©e en spirale selon une courbure dont le centre est d'un cĆ“tĆ© intĆ©rieur dudit lacet, opposĆ© audit cĆ“tĆ© extĆ©rieur, ladite zone d'accumulation se terminant par une fin de bande.The invention relates to a method of calendering the spiral portion of a watch-spring, from a lace drawn and pre-rolled, said lace comprising, successively, from a beginning of the blade, a shell shaped beforehand calendering, with a curvature whose center is on an outer side of said lace, said shell being followed by a neck having a zone of zero curvature and forming a zone of inflection, and said neck being followed by a zone of accumulation which is intended to be, during said calendering operation, spirally calendered in a curvature whose center is an inner side of said lace, opposite said outer side, said accumulation zone ending in a tape end.

L'invention concerne le domaine de la fabrication des ressorts de barillet d'horlogerie.The invention relates to the field of manufacture of clock springs.

ArriĆØre-plan de l'inventionBackground of the invention

La fabrication de ressorts de barillet d'horlogerie est complexe, et nƩcessite de nombreuses Ʃtapes, dont une Ʃtape de mise en bague ou/et une Ʃtape de calandrage d'une partie d'un lacet Ơ une extrƩmitƩ duquel a ƩtƩ formƩ au prƩalable un coquillon, pour former la lame du ressort.The manufacture of clock springs is complex, and requires many steps, including a step of ringing and / or a calendering step of a portion of a lace at one end of which has been previously formed a shell, to form the leaf of the spring.

Cette opƩration de calandrage est dƩlicate, et nƩcessite une reproductibilitƩ parfaite. La manutention du ressort est malcommode en sortie de l'opƩration de calandrage.This calendering operation is delicate, and requires perfect reproducibility. The handling of the spring is inconvenient at the exit of the calendering operation.

Le document CH708674A2 au nom de GĆ©nĆ©rale Ressort dĆ©crit un Ć©quipement pour la mise en forme d'un fil mĆ©tallique au cours d'un procĆ©dĆ© de fabrication d'un ressort-moteur, comprenant un systĆØme d'entraĆ®nement du fil dans deux directions opposĆ©es l'une Ć  l'autre, et comprenant un dispositif de guidage et d'Ć©jection du fil; l'Ć©quipement comprend aussi un dispositif de calandrage situĆ© dans la premiĆØre direction en rĆ©fĆ©rence au systĆØme d'entraĆ®nement, un dispositif de coquillonnage situĆ© dans la deuxiĆØme direction opposĆ©e, et un guide-fil central agencĆ© au niveau du systĆØme d'entraĆ®nement et destinĆ© Ć  coopĆ©rer avec au moins l'un des dispositifs de calandrage et de coquillonnage pour dĆ©former le fil mĆ©tallique.The document CH708674A2 in the name of General Ressort describes a device for shaping a wire during a method of manufacturing a mainspring, comprising a wire drive system in two directions opposite to each other. other, and comprising a device for guiding and ejecting the wire; the equipment also includes a calendering device in the first direction with reference to the drive system, a shovel device in the second opposite direction, and a central wire guide arranged at the drive system for cooperate with at least one of the calendering and shearing devices to deform the wire.

Le document WO2008/102388A1 au nom de Boldrini Spa dƩcrit une calandre comportant un support portant deux galets et un rouleau de pression qui, en coopƩration les uns avec les autres, dƩfinissent une trajectoire d'alimentation courbe pour une plaque Ơ cintrer. Les galets sont mobiles par rapport au rouleau de pression pour faire varier au moins une valeur de courbure de la trajectoire d'alimentation. L'appareil comprend en outre une paire de mƩcanismes cinƩmatiques articulƩs, dont chacun agit sur un galet respectif pour le dƩplacer le long d'une pluralitƩ de trajectoires situƩes dans un plan transversal Ơ l'axe de rotation de ce galet.The document WO2008 / 102388A1 in the name of Boldrini Spa describes a calender comprising a support carrying two rollers and a pressure roller which, in cooperation with each other, define a curved feed path for a bending plate. The rollers are movable relative to the pressure roll to vary at least one curvature value of the feed path. The apparatus further comprises a pair of articulated kinematic mechanisms, each of which acts on a respective roller to move it along a plurality of trajectories located in a plane transverse to the axis of rotation of the roller.

RƩsumƩ de l'inventionSummary of the invention

Le but du calandrage est de garantir le fonctionnement du ressort. En effet, toute la lame de ressort doit fournir le maximum de couple lors du dĆ©sarmage du ressort. C'est-Ć -dire que, pour chaque endroit de la lame, la surface du ressort est contrainte Ć  sa limite Ć©lastique Ć  l'Ć©tat complĆØtement armĆ©.The purpose of the calendering is to guarantee the functioning of the spring. Indeed, the entire leaf spring must provide the maximum torque when disarming the spring. That is, for each location on the blade, the spring surface is constrained to its elastic limit in the fully-armed state.

L'invention se propose de modifier le calandrage de faƧon Ć  Ć©viter une opĆ©ration classique et coĆ»teuse, de mise en bague du ressort pour la fin de son Ć©laboration, par exemple pour l'exĆ©cution d'un traitement. Et, plus particuliĆØrement, pour rĆ©aliser un produit intermĆ©diaire stockable et manutentionnable Ć  plat.The invention proposes to modify the calendering so as to avoid a conventional and expensive operation, ring setting the spring for the end of its development, for example for the execution of a treatment. And, more particularly, to produce a storable intermediate product that can be handled flat.

L'invention doit permettre d'Ʃviter une charge inutile des installations de traitement avec des outillages volumineux, et de faciliter la manipulation des ressorts, tout en supprimant le dƩbaguage usuel.The invention must make it possible to avoid unnecessary loading of processing facilities with bulky tools, and to facilitate handling of the springs while eliminating the usual debugging.

Le processus de calandrage consiste Ơ contraindre la lame ressort entre deux galets et une tige motorisƩe pour faire une flexion trois-points de la lame, permettant de la dƩformer plastiquement.The calendering process consists of constraining the spring blade between two rollers and a motorized rod to make a three-point bending of the blade, to deform plastically.

Le calandrage se fait usuellement Ć  diamĆØtre constant, ce qui implique un empilement des spires, qui ne peuvent pas reprendre leur forme aplatie une fois sortie du plan. Ce problĆØme est d'autant plus important que le diamĆØtre du ressort est petit.The calendering is usually done at a constant diameter, which involves a stack of turns, which can not return to their flattened shape once out of the plane. This problem is all the more important as the diameter of the spring is small.

L'invention propose la mise en oeuvre d'une technique de calandrage progressif ou variable, qui permet de produire un ressort calandrĆ© avec un espace, constant ou variable selon les rĆ©glages, entre les spires. Le but est de faciliter la manipulation dans les opĆ©rations ultĆ©rieures du process de fabrication, et de supprimer le matelas usuel. L'invention permet de garantir un calandrage de plus petit diamĆØtre au niveau de la partie calandrĆ©e qui correspond au dĆ©but du process, et d'augmenter le diamĆØtre en se rapprochant du coquillon.The invention proposes the implementation of a progressive or variable calendering technique, which makes it possible to produce a calendered spring with a space, constant or variable depending on the settings, between the turns. The goal is to facilitate handling in subsequent operations of the manufacturing process, and to remove the usual mattress. The invention makes it possible to guarantee a calender of smaller diameter at the calendered portion which corresponds to the beginning of the process, and to increase the diameter while approaching the shell.

Le principe de l'invention consiste Ʃgalement Ơ contraindre la lame entre trois points pour dƩpasser la limite Ʃlastique localement dans la lame et ainsi former la partie calandrƩe.The principle of the invention also consists in constraining the blade between three points to exceed the elastic limit locally in the blade and thus form the calendered portion.

A cet effet, l'invention concerne un procƩdƩ de calandrage de ressort de barillet selon la revendication 1.To this end, the invention relates to a method of calendering a mainspring according to claim 1.

Description sommaire des dessinsBrief description of the drawings

D'autres caractĆ©ristiques et avantages de l'invention apparaĆ®tront Ć  la lecture de la description dĆ©taillĆ©e qui va suivre, en rĆ©fĆ©rence aux dessins annexĆ©s, oĆ¹ :

  • la figure 1 reprĆ©sente, de faƧon schĆ©matisĆ©e, et en plan, un ressort de barillet d'horlogerie calandrĆ© selon le procĆ©dĆ© de l'invention ;
  • la figure 2 reprĆ©sente, de faƧon schĆ©matisĆ©e, et en vue de dessus, une calandre utilisĆ©e pour la mise en oeuvre du procĆ©dĆ© selon l'invention avec un lacet introduit pour son calandrage ;
  • la figure 3 reprĆ©sente, de faƧon similaire Ć  la figure 2, la mise en contact du lacet avec trois moyens d'appui et de guidage rĆ©partis de part et d'autre de ce lacet ;
  • la figure 4 reprĆ©sente, de faƧon similaire Ć  la figure 3, la mise en pression du moyen d'appui et de guidage intermĆ©diaire, sur le lacet;
  • la figure 5 reprĆ©sente, de faƧon similaire Ć  la figure 4, un autre angle d'enfilage du lacet dans la calandre ;
  • la figure 6 reprĆ©sente, de faƧon schĆ©matisĆ©e, la dĆ©formation du triangle de contact entre les trois moyens d'appui et de guidage et le lacet, lors de l'avancĆ©e du moyen d'appui et de guidage intermĆ©diaire par rapport aux deux extrĆŖmes.
Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:
  • the figure 1 schematically represents, in plan, a calendered clock spring according to the method of the invention;
  • the figure 2 represents, schematically, and in plan view, a calender used for carrying out the method according to the invention with a lace introduced for its calendering;
  • the figure 3 represents, similarly to the figure 2 contacting the lace with three bearing and guiding means distributed on either side of this lace;
  • the figure 4 represents, similarly to the figure 3 pressurizing the intermediate support and guide means on the lace;
  • the figure 5 represents, similarly to the figure 4 another angle of threading of the lace in the shell;
  • the figure 6 represents, schematically, the deformation of the contact triangle between the three support and guide means and the lace, during the advancement of the support means and intermediate guide with respect to the two extremes.

Description dƩtaillƩe des modes de rƩalisation prƩfƩrƩsDetailed Description of the Preferred Embodiments

L'invention concerne un procƩdƩ de calandrage de la partie spirale d'un ressort de barillet 100 d'horlogerie, Ơ partir d'un lacet 1 trƩfilƩ et laminƩ au prƩalable.The invention relates to a method of calendering the spiral portion of a clock spring 100 watchmaking, from a lace 1 drawn and pre-rolled.

Ce lacet 1, d'Ć©paisseur Ā«eĀ», comporte successivement, depuis un dĆ©but de lame, un coquillon 2 faƧonnĆ© prĆ©alablement au calandrage, avec une courbure dont le centre est d'un cĆ“tĆ© extĆ©rieur du lacet 1.This lace 1, of thickness "e", comprises successively, since a blade start, a shell 2 shaped prior to calendering, with a curvature whose center is an outer side of the lace 1.

Ce coquillon 2 est suivi d'un cou 3, de longueur LC, comportant une zone de courbure nulle 4 et formant une zone d'inflexion.This shell 2 is followed by a neck 3, of length LC, having a zone of zero curvature 4 and forming a zone of inflection.

Et ce cou 3 est suivi d'une zone d'accumulation 5, qui seule concerne l'opĆ©ration de calandrage selon l'invention, et qui est destinĆ©e Ć  ĆŖtre, lors de cette opĆ©ration de calandrage, calandrĆ©e en spirale selon une courbure dont le centre est d'un cĆ“tĆ© intĆ©rieur du lacet 1, opposĆ© au cĆ“tĆ© extĆ©rieur.And this neck 3 is followed by an accumulation zone 5, which alone relates to the calendering operation according to the invention, and which is intended to be, during this calendering operation, calendered in a spiral according to a curvature of which the center is an inner side of the lace 1, opposite to the outer side.

La zone d'accumulation 5 se termine par une fin de bande 6, et peut avantageusement, mais non nĆ©cessairement, comporter une courte longueur finale LF non spiralĆ©e, qui constitue l'amorce par oĆ¹ on commence l'opĆ©ration de calandrage.The accumulation zone 5 terminates in a strip end 6, and may advantageously, but not necessarily, include a short final LF non-spiral length, which constitutes the primer by which the calendering operation is started.

Selon l'invention, l'opĆ©ration est une opĆ©ration de calandrage variable, et plus particuliĆØrement une opĆ©ration de calandrage progressif.According to the invention, the operation is a variable calendering operation, and more particularly a progressive calendering operation.

Selon l'invention, on met en oeuvre une calandre 20 qui comporte au moins un premier moyen d'appui et de guidage 10 agencĆ© pour exercer un effort F sur le lacet 1 en une premiĆØre zone de contact A intermĆ©diaire, qui est situĆ©e entre une deuxiĆØme B et une troisiĆØme C zones de contact extrĆŖmes que comportent respectivement un deuxiĆØme 12 et un troisiĆØme 13 moyens d'appui et de guidage, que comporte la calandre 20, pour enrouler la zone d'accumulation 5 avec une courbure opposĆ©e Ć  celle du coquillon 2.According to the invention, a calender 20 is used which comprises at least a first support and guide means 10 arranged to exert a force F on the yaw 1 in a first intermediate contact zone A, which is situated between a second B and a third C extreme contact zones that comprise respectively a second 12 and a third 13 support and guiding means, which comprises the calender 20, for winding the accumulation zone 5 with a curvature opposite to that of the shell 2.

Et, lors de l'avance du lacet 1 dans la calandre 20, on modifie progressivement la position de la premiĆØre zone de contact A en l'Ć©loignant des deuxiĆØme B et troisiĆØme C zones de contact, pour faire varier le rayon de calandrage depuis une premiĆØre valeur minimale R1 jusqu'Ć  une deuxiĆØme valeur R2 maximale Ć  la jonction entre la zone d'accumulation 5 et le cou 3, oĆ¹ on stoppe l'opĆ©ration de calandrage.And, during the advance of the lace 1 in the calender 20, the position of the first contact zone A is gradually changed away from the second B and third C contact zones, to vary the calender radius since a first minimum value R1 to a second maximum value R2 at the junction between the accumulation zone 5 and the neck 3, where the calendering operation is stopped.

La figure 3 illustre la mise en contact du lacet 1 avec les trois moyens d'appui et de guidage 10, 12, 13, rĆ©partis de part et d'autre de ce lacet 1, au dĆ©but du calandrage, la figure 4 illustre la mise en pression du moyen d'appui et de guidage intermĆ©diaire 10, sur le lacet 1. Et la figure 6 reprĆ©sente la dĆ©formation du triangle de contact ABC entre les trois moyens d'appui et de guidage 10, 12, 13, et le lacet 1, lors de l'avancĆ©e du moyen d'appui et de guidage intermĆ©diaire 10 par rapport aux deux extrĆŖmes 12 et 13.The figure 3 illustrates the contacting of the lace 1 with the three bearing and guiding means 10, 12, 13, distributed on either side of this lace 1, at the beginning of the calendering, the figure 4 illustrates the pressurization of the support and intermediate guide means 10, on the lace 1. And the figure 6 represents the deformation of the contact triangle ABC between the three bearing and guiding means 10, 12, 13, and the lace 1, during the advancement of the intermediate support and guide means 10 with respect to the two extremes 12 and 13.

Dans une mise en oeuvre particuliĆØre de l'invention, on maintient le troisiĆØme moyen d'appui et de guidage 13 en position fixe.In a particular implementation of the invention, the third support and guiding means 13 are maintained in a fixed position.

Dans une mise en oeuvre particuliĆØre de l'invention, on maintient le deuxiĆØme moyen d'appui et de guidage 12 en position fixe.In a particular embodiment of the invention, the second support and guiding means 12 are maintained in a fixed position.

Dans une mise en oeuvre particuliĆØre de l'invention, on dĆ©place le premier moyen d'appui et de guidage 10 par rapport aux deuxiĆØme 12 et troisiĆØme 13 moyens d'appui et de guidage qui sont fixes.In a particular embodiment of the invention, the first support and guiding means 10 are moved relative to the second 12 and third 13 support and guiding means which are fixed.

Dans une mise en oeuvre particuliĆØre de l'invention, on dĆ©place le premier moyen d'appui et de guidage 10 et/ou le deuxiĆØme moyen d'appui et de guidage 12 par rapport au troisiĆØme moyen d'appui et de guidage 13 qui est en position fixe.In a particular embodiment of the invention, the first support and guiding means 10 and / or the second support and guiding means 12 are moved relative to the third support and guiding means 13 which is in a fixed position.

Dans une mise en oeuvre particuliĆØre de l'invention, on dĆ©place, avec au moins un degrĆ© de libertĆ©, un chariot 11 porteur du premier moyen d'appui et de guidage 10, pour exercer cet effort F sur le lacet 1.In a particular embodiment of the invention, a carriage 11 carrying the first support and guiding means 10 is displaced, with at least one degree of freedom, to exert this force F on the lace 1.

Et, plus particuliĆØrement, on imprime Ć  ce chariot 11 un mouvement d'avance, notamment rĆ©gulier, permettant le calandrage progressif selon l'invention. Les figures 3 et 4 illustrent une rĆ©alisation particuliĆØre non limitative avec un pivotement de ce chariot 11, ce qui permet de montrer une dĆ©formabilitĆ© particuliĆØre du triangle ABC des appuis.And, more particularly, it prints to this carriage 11 a forward movement, including regular, allowing the progressive calendering according to the invention. The Figures 3 and 4 illustrate a particular non-limiting embodiment with a pivoting of the carriage 11, which allows to show a particular deformability of the triangle ABC supports.

Dans une mise en oeuvre particuliĆØre de l'invention, on interpose un dĆ©flecteur 15 sur le trajet du lacet 1 aprĆØs sa sortie de la zone de calandrage pour assurer son enroulement correct.In a particular embodiment of the invention, a deflector 15 is interposed on the path of the lace 1 after its exit from the calender zone to ensure its correct winding.

Le premier moyen d'appui et de guidage 10, le deuxiĆØme moyen d'appui et de guidage 12, et le troisiĆØme moyen d'appui et de guidage 13, peuvent ĆŖtre chacun rĆ©alisĆ© sous la forme d'un arbre fixe, d'un galet fou, ou encore d'un galet motorisĆ© pour assurer l'avancement du lacet 1 dans la calandre 20.The first support and guide means 10, the second support and guide means 12, and the third support and guide means 13 may each be in the form of a fixed shaft, a idler roller, or a motorized roller to ensure the advance of the lace 1 in the shell 20.

Si plusieurs d'entre eux sont motorisĆ©s, ils peuvent ĆŖtre non parfaitement synchrones, de faƧon Ć  assurer par exemple une tension du lacet 1 dans la zone de calandrage entre les deuxiĆØme B et troisiĆØme C zones de contact. Dans une variante, le deuxiĆØme moyen d'appui et de guidage 12 et le troisiĆØme moyen d'appui et de guidage 13 sont tous deux motorisĆ©s, et le premier tend Ć  imprimer au lacet une vitesse tangentielle lĆ©gĆØrement supĆ©rieure au second.If several of them are motorized, they may be not perfectly synchronous, so as to ensure for example a tension of the lace 1 in the calendering zone between the second B and third C contact areas. In a variant, the second support and guiding means 12 and the third support and guiding means 13 are both motorized, and the first tends to impress the shoelace with a tangential velocity slightly greater than the second.

L'ajout optionnel d'une opƩration de matriƧage permet de supprimer le plat de calandrage prƩsent en fin de lame depuis la mise en place du calandrage Ơ la place de la mise en bague traitement thermique. Ceci peut Ʃviter le cambrage des ressorts manuels Ơ brides rapportƩes.The optional addition of a stamping operation makes it possible to remove the calendering plate present at the end of the blade since the introduction of the calendering instead of setting the heat treatment ring. This can prevent the camber of manual springs reported.

L'invention est illustrĆ©e dans un cas particulier non limitatif oĆ¹ le premier moyen d'appui et de guidage 10 est une tige, le deuxiĆØme moyen d'appui et de guidage 12 et le troisiĆØme moyen d'appui et de guidage 13 sont deux galets. En somme, Ć  un instant donnĆ©, les surfaces de contact entre la tige 10, les deux galets 12, 13, et le lacet 1, dĆ©terminent sur ce dernier un profil voisin d'un arc de cercle avec une certaine courbure instantanĆ©e.The invention is illustrated in a particular nonlimiting example where the first support and guide means 10 is a rod, the second support and guide means 12 and the third support and guide means 13 are two rollers . In sum, at a given moment, the contact surfaces between the rod 10, the two rollers 12, 13, and the lace 1, determine on the latter a profile close to an arc with a certain instantaneous curvature.

Pour que le ressort 100 puisse s'enrouler Ć  plat sur le plan de travail, il faut que cette courbure instantanĆ©e varie Ć  peu prĆØs rĆ©guliĆØrement pendant tout le calandrage de la zone spirale d'accumulation 5.In order for the spring 100 to be able to wind flat on the work surface, this instantaneous curvature must vary approximately regularly during all the calendering of the spiral accumulation zone 5.

Et cette courbure instantanĆ©e croĆ®t, si possible de faƧon rĆ©guliĆØre, depuis la fin de lame jusqu'au cou.And this instantaneous curvature grows, if possible on a regular basis, from the end of the blade to the neck.

Par exemple on applique sur le chariot 11 porteur de la tige 10 une pression rĆ©guliĆØrement croissante en fonction de l'avance du lacet 1, dĆ©finie par la vitesse de rotation d'au moins un galet motorisĆ©, qui peut ĆŖtre le galet 14 de la figure 2, ou encore le galet 12 ou/et le galet 13, cette vitesse de rotation Ć©tant aussi modulable.For example, on the carriage 11 carrying the rod 10, a regularly increasing pressure is applied as a function of the advance of the lace 1, defined by the speed of rotation of at least one motorized roller, which may be the roller 14 of the figure 2 , or the roller 12 and / or the roller 13, this rotational speed being also adjustable.

Pour quantifier les diamĆØtres de calandrage, citons quelques exemples des diffĆ©rentes grandeurs:

  • diamĆØtre intĆ©rieur ou initial 2R1: 3-15mm
  • diamĆØtre extĆ©rieur ou final 2R2: 12-40mm
  • pas P de la spire : 0-10 Ć©paisseur de lame
  • longueur de lame : 100-1000mm.
To quantify the calender diameters, let us quote some examples of the different quantities:
  • inner or initial diameter 2R1: 3-15mm
  • outer or final diameter 2R2: 12-40mm
  • not P of the turn: 0-10 blade thickness
  • blade length: 100-1000mm.

La calandre 20 utilisƩe pour la mise en oeuvre de ce procƩdƩ comporte avantageusement les diffƩrents dispositifs dƩcrits ci-dessus.The calender 20 used for the implementation of this method advantageously comprises the various devices described above.

Plus particuliĆØrement, cette calandre 20 comporte, de part et d'autre d'une zone de calandrage agencĆ©e pour recevoir un lacet 1 pourvu au prĆ©alable d'un coquillon 2 Ć  une extrĆ©mitĆ©, d'un premier cĆ“tĆ© au moins un premier moyen d'appui et de guidage 10 agencĆ© pour exercer un effort F sur un tel lacet 1 en une premiĆØre zone de contact A intermĆ©diaire, qui est situĆ©e entre une deuxiĆØme B et une troisiĆØme C zones de contact extrĆŖmes que comportent respectivement un deuxiĆØme 12 et un troisiĆØme 13 moyens d'appui et de guidage, que comporte la calandre 20 sur un deuxiĆØme cĆ“tĆ©, opposĆ© au premier cĆ“tĆ© par rapport Ć  la zone de calandrage. L'exercice de cet effort F sur le lacet 1 crĆ©e sur celui-ci une zone d'accumulation 5 avec une courbure opposĆ©e Ć  celle du coquillon 2.More particularly, this calender 20 comprises, on either side of a calendering zone arranged to receive a lace 1 provided beforehand with a shell 2 at one end, a first side at least a first means of support and guide 10 arranged to exert a force F on such a lace 1 in a first intermediate contact zone A, which is located between a second B and a third C extreme contact zones that respectively comprise a second 12 and a third 13 support and guiding means, which comprises the calender 20 on a second side opposite to the first side with respect to the calender zone. The exercise of this effort F on the lace 1 creates on it an accumulation zone 5 with a curvature opposite that of the shell 2.

Plus particuliĆØrement, le premier moyen d'appui et de guidage 10 est mobile par rapport aux deuxiĆØme 12 et troisiĆØme 13 moyens d'appui et de guidage.More particularly, the first support and guide means 10 is movable relative to the second 12 and third 13 support and guiding means.

Plus particuliĆØrement, la calandre 20 comporte des moyens de dĆ©placement du premier moyen d'appui et de guidage 10 pour crĆ©er un tel effort F variable.More particularly, the calender 20 comprises means for moving the first support and guiding means 10 to create such a variable force F.

Plus particuliĆØrement, ces moyens de dĆ©placement sont agencĆ©s pour imprimer Ć  un chariot mobile 11 porteur de cet au moins un premier moyen d'appui et de guidage 10, un mouvement d'avance, ou un mouvement d'avance rĆ©gulier, pour la rĆ©alisation d'un calandrage progressif. Plus particuliĆØrement, les moyens de dĆ©placement sont agencĆ©s pour imprimer Ć  un chariot mobile 11 au moins un mouvement de pivotement.More particularly, these displacement means are arranged to print to a movable carriage 11 carrying this at least one first support and guide means 10, an advance movement, or a regular advance movement, for the realization of a progressive calendering. More particularly, the displacement means are arranged to print to a mobile carriage 11 at least one pivoting movement.

Plus particuliĆØrement, la calandre 20 comporte un dĆ©flecteur 15 interposĆ© sur le trajet du lacet 1 aprĆØs sa sortie de la zone de calandrage pour assurer son enroulement correct. Naturellement, ce dĆ©flecteur 15 peut ĆŖtre motorisĆ©, et mobile selon un ou plusieurs degrĆ©s de libertĆ©.More particularly, the calender 20 comprises a deflector 15 interposed on the path of the lace 1 after its exit from the calender zone to ensure its correct winding. Naturally, this deflector 15 can be motorized, and movable in one or more degrees of freedom.

Plus particuliĆØrement encore, le premier moyen d'appui et de guidage 10 et/ou le deuxiĆØme moyen d'appui et de guidage 12 et/ou le troisiĆØme moyen d'appui et de guidage 13 est rĆ©alisĆ© sous la forme d'un galet motorisĆ© pour assurer l'avancement du lacet 1 dans la zone de calandrage. Plus particuliĆØrement, au moins deux de ces premier moyen d'appui et de guidage 10, deuxiĆØme moyen d'appui et de guidage 12, troisiĆØme moyen d'appui et de guidage 13, sont motorisĆ©s de faƧon non synchrone, de faƧon Ć  assurer une tension du lacet 1 dans la zone de calandrage.More particularly still, the first support and guiding means 10 and / or the second support and guiding means 12 and / or the third support and guiding means 13 is in the form of a motorized roller to ensure the advance of the lace 1 in the calender area. More particularly, at least two of these first support and guiding means 10, second support and guiding means 12, third support and guiding means 13, are motorized in a non-synchronous manner, so as to ensure lace tension 1 in the calender zone.

Plus particuliĆØrement, la calandre 20 comporte au moins un galet d'entraĆ®nement 14 motorisĆ© pour assurer l'avancement du lacet 1 dans la zone de calandrage.More particularly, the calender 20 comprises at least one drive roller 14 motorized to ensure the advance of the lace 1 in the calender zone.

Naturellement la calandre 20 peut avantageusement comporter des moyens de pilotage et/ou des moyens de mĆ©morisation, pour piloter les diffĆ©rents organes motorisĆ©s et reproduire Ć  l'identique des sĆ©quences mĆ©morisĆ©es pour l'obtention de ressorts de faƧon reproductible. Ces moyens de pilotage peuvent, encore, ĆŖtre combinĆ©s avec des capteurs de mesure d'Ć©paisseur du ressort en aval de la zone de calandrage, et/ou de mesure de sa concavitĆ© aprĆØs calandrage.Naturally, the calender 20 may advantageously comprise driving means and / or storage means for controlling the different motorized components and reproducing identically stored sequences for obtaining springs in a reproducible manner. These control means can, again, be combined with sensors for measuring the thickness of the spring downstream of the calendering zone, and / or measuring its concavity after calendering.

L'invention permet de rĆ©aliser un ressort de barillet 100 d'horlogerie, dont les spires ne sont pas jointives, et sont distantes l'une de l'autre Ć  l'Ć©tat libre du ressort. Plus particuliĆØrement, ce ressort 100 est un ressort tĆ©flonnĆ©, dont les spires tĆ©flonnĆ©es sont distantes l'une de l'autre Ć  l'Ć©tat libre du ressort. L'invention permet la rĆ©alisation d'un tel ressort.The invention makes it possible to produce a clock spring 100, whose turns are not contiguous, and are distant from each other in the free state of the spring. More particularly, this spring 100 is a teflon spring, whose Teflon turns are spaced apart from each other in the free state of the spring. The invention allows the realization of such a spring.

La technique de calandrage progressif selon l'invention apporte plusieurs avantages:

  • la suppression ou au moins la rĆ©duction de l'emmĆŖlement des ressorts lors des manipulations, et lors des opĆ©rations en vrac telles que passage au four, lavage, tĆ©flonnage, chargement sur automates, grĆ¢ce Ć  la sĆ©paration des spires des ressorts, car le procĆ©dĆ© de calandrage selon l'invention est Ć©tudiĆ© pour que chaque ressort reste dans une configuration plane et ne se dĆ©tende pas lors des manipulations;
  • la rĆ©duction des raies dues au frottement avec les galets et axes de la calandre ;
  • la suppression du contact entre les spires, permettant un lavage, notamment par solvants, et un tĆ©flonnage plus efficaces ;
  • la rĆ©duction du matelas du ressort rĆ©sultant de l'entrecroisement des spires, frĆ©quent dans l'art antĆ©rieur.
The progressive calendering technique according to the invention provides several advantages:
  • the elimination or at least the reduction of the entanglement of the springs during the manipulations, and during the bulk operations such as passage in the oven, washing, tefloning, loading on automata, thanks to the separation of the turns of the springs, because the calendering process according to the invention is designed so that each spring remains in a planar configuration and does not relax during handling;
  • reduction of the lines due to friction with the rollers and axes of the shell;
  • the elimination of the contact between the turns, allowing a washing, in particular by solvents, and a more efficient tefloning;
  • the reduction of the spring mat resulting from the interlacing of the turns, common in the prior art.

Claims (16)

  1. Method for press-rolling a mainspring (100) from a wire (1) comprising a preformed eye (2), whereby a roller press (20) is implemented, said roller press comprising a first support and guide means (10) exerting a force (F) on said wire (1) in a first contact area (A) located between a second (B) and a third (C) contact area comprised in a second (12) and a third (13) support and guide means, in order to wind, beyond said eye (2), an accumulation area (5) with a curvature opposite to that of said eye (2), and wherein, as said wire (1) advances, the position of said first contact area (A) is gradually moved away from said second (B) and third (C) contact areas, in order to vary the press-rolling radius from a first minimum value (R1) to a second maximum value (R2) at a neck (3) junction between said accumulation area (5) and said eye (2).
  2. Press-rolling method according to claim 1, characterised in that said press-rolling operation is stopped when said second maximum value (R2) is reached.
  3. Method according to claim 1 or claim 2, characterised in that said third (13) support and guide means and/or said second (12) support and guide means is held in a fixed position.
  4. Method according to claim 3, characterised in that said first support and guide means (10) is moved relative to said second (12) and third (13) support and guide means, which are fixed.
  5. Method according to claim 1 or claim 2, characterised in that said first support and guide means (10) and/or said second (12) support and guide means is moved relative to said third (13) support and guide means, which is in a fixed position.
  6. Method according to one of claims 1 to 5, characterised in that a slide (11) carrying said first support and guide means (10) is moved with at least one degree of freedom, in order to exert said force (F) on said wire (1).
  7. Method according to one of claims 1 to 6, characterised in that a deflector (15) is placed in the path of said wire (1) once said wire leaves the press-rolling area to ensure the correct winding thereof.
  8. Method according to one of claims 1 to 7, characterised in that one said roller press (20) is used for implementing said method, said roller press comprising, on either side of a press-rolling area arranged for receiving one said wire (1), on a first side at least said first support and guide means (10), and on a second side said second (12) and said third (13) support and guide means.
  9. Method according to claim 8, characterised in that one said roller press (20) is used, said first support and guide means (10) whereof is capable of moving relative to said second (12) and third (13) support and guide means.
  10. Method according to either claim 8 or claim 9, characterised in that one said roller press (20) is used, which comprises means for moving said first support and guide means (10) in order to create a said variable force (F).
  11. Method according to claim 10, characterised in that one said roller press (20) is used, said moving means whereof are arranged to impart, to a movable slide (11) carrying said at least one first support and guide means (10), an advancing movement, or a regular advancing movement, in order to achieve gradual press-rolling.
  12. Method according to claim 11, characterised in that one said roller press (20) is used, said moving means whereof are arranged to impart, to a movable slide (11), at least one pivoting movement.
  13. Method according to one of claims 8 to 12, characterised in that one said roller press (20) is used, which roller press comprises a deflector (15) placed in the path of said wire (1) once said wire leaves said press-rolling area to ensure the correct winding thereof.
  14. Method according to one of claims 8 to 13, characterised in that one said roller press (20) is used, said first support and guide means (10) whereof, and/or said second support and guide means (12) whereof, and/or said third support and guide means (13) whereof is made in the form of a motorised roll to ensure the advancing of said wire (1) inside said press-rolling area.
  15. Method according to claim 14, characterised in that one said roller press (20) is used, of which at least two of said first support and guide means (10), second support and guide means (12), and third support and guide means (13), are motorised in a non-synchronous manner, to ensure a tension of said wire (1) inside said press-rolling area.
  16. Method according to one of claims 8 to 15, characterised in that one said roller press (20) is used, comprising at least one motorised drive roll (14) to ensure the advancing of said wire (1) inside said press-rolling area.
EP16173898.4A 2016-06-10 2016-06-10 Calender and method for calendering a timepiece barrel spring Active EP3255510B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP16173898.4A EP3255510B1 (en) 2016-06-10 2016-06-10 Calender and method for calendering a timepiece barrel spring
JP2017104208A JP6345845B2 (en) 2016-06-10 2017-05-26 Method for manufacturing a main spring for a timer by a press roll
US15/615,263 US10456825B2 (en) 2016-06-10 2017-06-06 Method for press-rolling a timepiece mainspring
RU2017120151A RU2681514C2 (en) 2016-06-10 2017-06-08 Method of pressing rolling of the running spring of the hour mechanism
CN201710432174.9A CN107486515B (en) 2016-06-10 2017-06-09 Method for roll-in clock and watch mainspring barrel
HK18107425.0A HK1247889A1 (en) 2016-06-10 2018-06-07 Method for press-rolling a timepiece mainspring

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EP16173898.4A EP3255510B1 (en) 2016-06-10 2016-06-10 Calender and method for calendering a timepiece barrel spring

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EP3255510B1 true EP3255510B1 (en) 2019-06-05

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EP (1) EP3255510B1 (en)
JP (1) JP6345845B2 (en)
CN (1) CN107486515B (en)
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TWI692335B (en) * 2018-09-07 2020-05-01 é»ƒč³¢å¾· Machine for making variable-pressure coil spring of curtain spring motor

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
DE434664C (en) * 1925-01-29 1926-09-30 Carl Boeving Dipl Ing Fuse for spring drives
CH187668A (en) 1935-12-17 1936-11-30 Schaerer Nussbaumer & Co Winding machine with several winding spindles.
JPS525662A (en) * 1975-07-03 1977-01-17 Sanwa Kosan Kk Method of and apparatus for producing spiral spring
JPS6050527B2 (en) * 1977-04-22 1985-11-08 ć‚»ć‚¤ć‚³āˆ’電子éƒØ品ę Ŗ式会ē¤¾ Mainspring processing equipment
JPS582498Y2 (en) * 1977-08-12 1983-01-17 ę—„ē«‹é€ čˆ¹ę Ŗ式会ē¤¾ table rotary bender
DE3615771A1 (en) * 1986-05-10 1987-11-12 Reinhardt Gmbh Maschbau Process and apparatus for the round-bending of metal sheets
JPS63106540U (en) * 1986-12-26 1988-07-09
JP3030688B2 (en) * 1996-01-31 2000-04-10 ꗭē²¾ę©Ÿå·„ę„­ę Ŗ式会ē¤¾ Spiral spring forming method
FR2758281B1 (en) * 1997-01-14 1999-04-02 Robolix Sa MACHINE FOR BENDING LOW DIAMETER TUBES, IN PARTICULAR LESS THAN 10MM, PRECUT AND PRESENTING CONNECTION SYSTEMS AT EACH OF THEIR ENDS, AND BENDING HEAD FOR SUCH A MACHINE
CN101646509A (en) * 2007-02-21 2010-02-10 åšå°”å¾·é‡Œå°¼č‚”ä»½å…¬åø Band roll bending board device
JP5756609B2 (en) * 2010-07-30 2015-07-29 ę—„ęœ¬ē™ŗę¢ę Ŗ式会ē¤¾ Coil spring manufacturing equipment
EP2657794B1 (en) * 2012-04-25 2017-02-01 ETA SA Manufacture HorlogĆØre Suisse Barrel spring and arbour
CH708674B1 (en) * 2013-10-11 2018-03-15 Generale Ressorts Sa Equipment and method for forming a wire during a method of manufacturing a motor spring.

Non-Patent Citations (1)

* Cited by examiner, ā€  Cited by third party
Title
None *

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RU2681514C2 (en) 2019-03-07
CN107486515B (en) 2019-06-28
JP2017217697A (en) 2017-12-14
HK1247889A1 (en) 2018-10-05
RU2017120151A3 (en) 2018-12-11
EP3255510A1 (en) 2017-12-13
RU2017120151A (en) 2018-12-11
JP6345845B2 (en) 2018-06-20
US20170355012A1 (en) 2017-12-14
CN107486515A (en) 2017-12-19
US10456825B2 (en) 2019-10-29

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