EP3255510A1 - 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
EP3255510A1
EP3255510A1 EP16173898.4A EP16173898A EP3255510A1 EP 3255510 A1 EP3255510 A1 EP 3255510A1 EP 16173898 A EP16173898 A EP 16173898A EP 3255510 A1 EP3255510 A1 EP 3255510A1
Authority
EP
European Patent Office
Prior art keywords
support
calender
lace
zone
calendering
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
EP16173898.4A
Other languages
German (de)
French (fr)
Other versions
EP3255510B1 (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
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Nivarox Far 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 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
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 also relates to a calender for the implementation of this method.
  • the invention also relates to a clock spring.
  • the invention relates to the field of watch cylinder springs and their manufacture.
  • 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 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 to say, for each location of the blade, the surface of the spring 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 also relates to a particular calender, according to claim 8, for this progressive calendering, and provided to reduce the lines due to the friction of the blade on metal parts, such as the axis and the rollers.
  • the invention also relates to a clock spring according to claim 17.
  • 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.
  • FIGS. 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 invention further relates to a calender 20 for carrying out this method, which 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 support means 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 means of support and guidance, that includes the calender 20 on a second side, opposite the first side relative to the calender area.
  • 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 mobile carriage 11 carrying this at least one first support and guide means 10, a feed movement, or a regular feed movement, for the production 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 also relates to a watch cylinder spring 100, whose turns are not contiguous, and are spaced apart 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)

Abstract

ProcĆ©dĆ© de calandrage d'un ressort de barillet (100), depuis un lacet (1) comportant un coquillon (2) faƧonnĆ© au prĆ©alable, utilisant une calandre (20) comportant un premier moyen d'appui (10) exerƧant un effort (F) sur ledit lacet (1) en une premiĆØre zone de contact (A) situĆ©e entre une deuxiĆØme (B) et une troisiĆØme (C) zones de contact que comportent un deuxiĆØme (12) et un troisiĆØme (13) moyens d'appui, pour enrouler, au-delĆ  dudit coquillon (2), une zone d'accumulation (5) avec une courbure opposĆ©e Ć  celle dudit coquillon (2), et oĆ¹, lors de l'avance dudit lacet (1) on modifie progressivement la position de ladite premiĆØre zone de contact (A) en l'Ć©loignant desdites 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 au niveau d'un cou (3) de jonction entre ladite zone d'accumulation (5) et ledit coquillon (2).A method of calendering a barrel spring (100) from a lace (1) having a shell (2) shaped beforehand, using a calender (20) having a first support means (10) exerting a force (F) ) on said lace (1) in a first contact zone (A) located between a second (B) and a third (C) contact zone that comprise a second (12) and a third (13) support means, for winding, beyond said shell (2), an accumulation zone (5) with a curvature opposite to that of said shell (2), and where, during the advance of said lace (1), the position is gradually modified of said first contact area (A) away from said second (B) and third (C) contact areas, to vary the calendering radius from a first minimum value (R1) to a second value (R2 ) at a junction neck (3) between said accumulation zone (5) and said shell (2).

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 encore une calandre pour la mise en oeuvre de ce procƩdƩ.The invention also relates to a calender for the implementation of this method.

L'invention concerne encore un ressort de barillet d'horlogerie.The invention also relates to a clock spring.

L'invention concerne le domaine des ressorts de barillet d'horlogerie et de leur fabrication.The invention relates to the field of watch cylinder springs and their manufacture.

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.

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 dƩsarmage du ressort. C'est-Ơ-dire que, pour chaque endroit de la lame, la surface du ressort est contrainte Ơ sa limite Ʃlastique Ơ l'Ʃtat complƩtement armƩ.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 to say, for each location of the blade, the surface of the spring 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.

L'invention concerne encore une calandre particuliĆØre, selon la revendication 8, permettant ce calandrage progressif, et prĆ©vue pour rĆ©duire les raies dues au frottement de la lame sur des parties mĆ©talliques, comme l'axe et les galets.The invention also relates to a particular calender, according to claim 8, for this progressive calendering, and provided to reduce the lines due to the friction of the blade on metal parts, such as the axis and the rollers.

L'invention concerne encore un ressort de barillet d'horlogerie selon la revendication 17.The invention also relates to a clock spring according to claim 17.

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 l'invention ;
  • la figure 2 reprĆ©sente, de faƧon schĆ©matisĆ©e, et en vue de dessus, une calandre 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 view, a calendered watch cylinder spring according to the invention;
  • the figure 2 represents, schematically, and in top view, a calender 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.And, more particularly, it prints to this carriage 11 a forward movement, including regular, allowing the progressive calendering according to the 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.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.

L'invention concerne encore une calandre 20 pour la mise en oeuvre de ce procƩdƩ, qui comporte les diffƩrents dispositifs dƩcrits ci-dessus.The invention further relates to a calender 20 for carrying out this method, which comprises the various devices described above.

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.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 support means 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 means of support and guidance, that includes the calender 20 on a second side, opposite the first side relative to the calender area. 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 mobile carriage 11 carrying this at least one first support and guide means 10, a feed movement, or a regular feed movement, for the production 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 concerne encore 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 also relates to a watch cylinder spring 100, whose turns are not contiguous, and are spaced apart 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 handling, and during the bulk operations such as baking, washing, tefloning, loading on automata, thanks to the separation of the turns of the springs, because the method of calendering 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 (18)

ProcĆ©dĆ© de calandrage d'un ressort de barillet (100), depuis un lacet (1) comportant un coquillon (2) faƧonnĆ© au prĆ©alable, caractĆ©risĆ© en ce qu'on met en oeuvre une calandre (20) comportant un premier moyen d'appui et de guidage (10) exerƧant un effort (F) sur ledit lacet (1) en une premiĆØre zone de contact (A) situĆ©e entre une deuxiĆØme (B) et une troisiĆØme (C) zones de contact que comportent un deuxiĆØme (12) et un troisiĆØme (13) moyens d'appui et de guidage, pour enrouler, au-delĆ  dudit coquillon (2), une zone d'accumulation (5) avec une courbure opposĆ©e Ć  celle dudit coquillon (2), et oĆ¹, lors de l'avance dudit lacet (1) on modifie progressivement la position de ladite premiĆØre zone de contact (A) en l'Ć©loignant desdites 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 au niveau d'un cou (3) de jonction entre ladite zone d'accumulation (5) et ledit coquillon (2).Method for calendering a barrel spring (100), from a lace (1) comprising a shell (2) shaped beforehand, characterized in that a shell (20) comprising a first support means is used and guide (10) exerting a force (F) on said lace (1) in a first contact zone (A) situated between a second (B) and a third (C) contact zone that comprise a second (12) and a third (13) support and guide means for winding, beyond said shell (2), an accumulation zone (5) with a curvature opposite to that of said shell (2), and where, when advance of said lace (1) progressively modifies the position of said first contact area (A) away from said second (B) and third (C) contact areas, to vary the calender radius from a first minimum value (R1) to a second maximum value (R2) at a junction neck (3) between said accumulation zone (5) and said shell (2). ProcĆ©dĆ© de calandrage selon la revendication 1, caractĆ©risĆ© en ce qu'on stoppe ladite opĆ©ration de calandrage quand ladite deuxiĆØme valeur (R2) maximale est atteinte.A calendering method according to claim 1, characterized in that said calender operation is stopped when said second maximum value (R2) is reached. ProcĆ©dĆ© selon la revendication 1 ou 2, caractĆ©risĆ© en ce qu'on maintient ledit troisiĆØme (13) moyen d'appui et de guidage et/ou ledit deuxiĆØme (12) moyen d'appui et de guidage en position fixe.A method according to claim 1 or 2, characterized in that said third (13) support and guide means and / or said second (12) support and guide means are held in a fixed position. ProcĆ©dĆ© selon la revendication 3, caractĆ©risĆ© en ce qu'on dĆ©place ledit premier moyen d'appui et de guidage (10) par rapport auxdits deuxiĆØme (12) et troisiĆØme (13) moyens d'appui et de guidage qui sont fixes.Method according to claim 3, characterized in that said first support and guiding means (10) are moved relative to said second (12) and third (13) support and guiding means which are fixed. ProcĆ©dĆ© selon la revendication 1 ou 2, caractĆ©risĆ© en ce qu'on dĆ©place ledit premier moyen d'appui et de guidage (10) et/ou ledit deuxiĆØme (12) moyen d'appui et de guidage par rapport audit troisiĆØme (13) moyen d'appui et de guidage qui est en position fixe.Method according to claim 1 or 2, characterized in that said first support and guiding means (10) and / or said second (12) support and guiding means are moved relative to said third (13) means support and guiding which is in fixed position. ProcĆ©dĆ© selon l'une des revendications 1 Ć  5, caractĆ©risĆ© en ce qu'on dĆ©place, avec au moins un degrĆ© de libertĆ©, un chariot (11) porteur dudit premier moyen d'appui et de guidage (10), pour exercer ledit effort (F) sur ledit lacet (1).Method according to one of claims 1 to 5, characterized in that a carriage (11) carrying said first support and guiding means (10) is moved with at least one degree of freedom to exert said force (F) on said lace (1). ProcĆ©dĆ© selon l'une des revendications 1 Ć  6, caractĆ©risĆ© en ce qu'on interpose un dĆ©flecteur (15) sur le trajet dudit lacet (1) aprĆØs sa sortie de la zone de calandrage pour assurer son enroulement correct.Method according to one of claims 1 to 6, characterized in that a deflector (15) is interposed in the path of said lace (1) after its exit from the calender zone to ensure its correct winding. Calandre (20) pour la mise en oeuvre de ce procĆ©dĆ©, comportant 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 dit 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 ladite calandre (20) sur un deuxiĆØme cĆ“tĆ©, opposĆ© au premier cĆ“tĆ© par rapport Ć  ladite zone de calandrage, l'exercice dudit effort (F) sur ledit lacet (1) crĆ©ant sur celui-ci une zone d'accumulation (5) avec une courbure opposĆ©e Ć  celle dudit coquillon (2).Calender (20) for carrying out this method, comprising 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 support and guide means (10) arranged to exert a force (F) on a said lace (1) in a first intermediate contact zone (A), which is located between a second ( B) and a third (C) extreme contact zone which comprises respectively a second (12) and a third (13) support and guiding means, which comprises said calender (20) on a second side, opposite the first side with respect to said calendering zone, the exercise of said force (F) on said lace (1) creating on it an accumulation zone (5) with a curvature opposite to that of said shell (2). Calandre (20) selon la revendication 8, caractĆ©risĆ©e en ce que ledit premier moyen d'appui et de guidage (10) est mobile par rapport auxdits deuxiĆØme (12) et troisiĆØme (13) moyens d'appui et de guidage.Calender (20) according to claim 8, characterized in that said first support and guide means (10) is movable relative to said second (12) and third (13) bearing and guiding means. Calandre (20) selon la revendication 8 ou 9, caractĆ©risĆ©e en ce que ladite calandre (20) comporte des moyens de dĆ©placement dudit premier moyen d'appui et de guidage (10) pour crĆ©er un dit effort (F) variable.Calender (20) according to claim 8 or 9, characterized in that said calender (20) comprises means for moving said first support means and guide (10) to create a said variable force (F). Calandre (20) selon la revendication 10, caractĆ©risĆ©e en ce que lesdits moyens de dĆ©placement sont agencĆ©s pour imprimer Ć  un chariot mobile (11) porteur dudit 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.Calender (20) according to claim 10, characterized in that said displacement means are arranged to print to a mobile carriage (11) carrying said at least one first support and guiding means (10), a movement in advance , or a regular advance movement, for the realization of a progressive calendering. Calandre (20) selon la revendication 11, caractĆ©risĆ©e en ce que lesdits moyens de dĆ©placement sont agencĆ©s pour imprimer Ć  un chariot mobile (11) au moins un mouvement de pivotement.Calender (20) according to claim 11, characterized in that said moving means are arranged to print a movable carriage (11) at least one pivoting movement. Calandre (20) selon l'une des revendications 8 Ć  12, caractĆ©risĆ©e en ce que ladite calandre (20) comporte un dĆ©flecteur (15) interposĆ© sur le trajet dudit lacet (1) aprĆØs sa sortie de ladite zone de calandrage pour assurer son enroulement correct.Calender (20) according to one of claims 8 to 12, characterized in that said calender (20) comprises a baffle (15) interposed on the path of said lace (1) after exiting said calender zone to ensure its winding correct. Calandre (20) selon l'une des revendications 8 Ć  13, caractĆ©risĆ©e en ce que ledit premier moyen d'appui et de guidage (10) et/ou ledit deuxiĆØme moyen d'appui et de guidage (12) et/ou ledit troisiĆØme moyen d'appui et de guidage (13) est rĆ©alisĆ© sous la forme d'un galet motorisĆ© pour assurer l'avancement dudit lacet (1) dans ladite zone de calandrage.Calender (20) according to one of claims 8 to 13, characterized in that said first support and guide means (10) and / or said second support and guide means (12) and / or said third support and guiding means (13) is embodied in the form of a motorized roller for advancing said lace (1) in said calender zone. Calandre (20) selon la revendication 14, caractĆ©risĆ©e en ce que au moins deux desdits 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 dudit lacet (1) dans ladite zone de calandrage.Calender (20) according to claim 14, characterized in that at least two of said first support and guiding means (10), second support and guiding means (12), third support and guiding means ( 13), are motorized non-synchronously, so as to ensure a tension of said lace (1) in said calendering zone. Calandre (20) selon l'une des revendications 8 Ć  15, caractĆ©risĆ©e en ce que ladite calandre (20) comporte au moins un galet d'entraĆ®nement (14) motorisĆ© pour assurer l'avancement dudit lacet (1) dans ladite zone de calandrage.Calender (20) according to one of claims 8 to 15, characterized in that said calender (20) comprises at least one drive roller (14) motorized to ensure the advancement of said lace (1) in said calendering zone . Ressort de barillet (100) d'horlogerie, caractĆ©risĆ© en ce que dont les spires sont distantes l'une de l'autre Ć  l'Ć©tat libre dudit ressort (100).Clock spring (100) clock, characterized in that the turns are spaced apart from each other in the free state of said spring (100). Ressort de barillet (100) d'horlogerie selon la revendication 17, caractĆ©risĆ© en ce que ledit 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 dudit ressort (100).Clock spring (100) of timepiece according to claim 17, characterized in that said spring (100) is a teflon spring, whose Teflon turns are spaced apart from each other in the free state of said spring (100). ).
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

Applications Claiming Priority (1)

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

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EP3255510A1 true EP3255510A1 (en) 2017-12-13
EP3255510B1 EP3255510B1 (en) 2019-06-05

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EP (1) EP3255510B1 (en)
JP (1) JP6345845B2 (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

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CH708674A2 (en) * 2013-10-11 2015-04-15 GƩnƩrale Ressorts Sa Equipment for forming a wire in a process for manufacturing a motor spring.

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WO2008102388A1 (en) * 2007-02-21 2008-08-28 Boldrini S.P.A. Apparatus for bending plates with rolls
CH708674A2 (en) * 2013-10-11 2015-04-15 GƩnƩrale Ressorts Sa Equipment for forming a wire in a process for manufacturing a motor spring.

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EP3255510B1 (en) 2019-06-05
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
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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