Buena información. Por cierto, que te dijeron de tu PP?.
Pués parece ser que Patek Philippe ha desarrollado un nuevo sistema completo de espiral de volante.
Junto con otras empresas del sector (entre ellas Rolex y otra no facilitada del grupo Swatch que parece ser Breguet) han desarrollado una espiral de volante revolucionaria con base de silicio.
En adición Patek ha añadido varias patentes adicionales, incluyendo nuevas geometrías en la curva terminal del espiral y formas de fijación elástica de pitón y virola.
El conjunto completo es lo que Patek ha registrado como Spiromax®. Las otras empresas aún no han realizado comunicado de prensa. Por lo que solo se dispone de información de Patek Philippe.
Las ventajas que comenta Patek de dicho conjunto de espiral de volante son:
· Reducción drástica de la influencia de la gravedad y fuerzas centrífugas en las distintas posiciones debido a que el peso es 3 veces inferior al de un Nivarox.
· Completamente antimágnético.
· No es afectado por la corrosión.
· No sufre alteraciones por cambios térmicos
· Debido a la particular geometría de lacurva terminal y al métodode de fijación al eje del volante y a la raqueta, el espiral respira concéntricamente durante todo el rango de amplitudes (característica a la que se aproxima un espiral Breguet) siendo un espiral totalmente plano y necesitando 3 veces menos altura que un espiral Breguet.
· Inalterable a pequeños choques cotidianos.
La inclusión de este tipo de espiral seguiría cumpliendo los criterios del Punzón de Ginebra.
El proceso de fabricación conocido como DRIE (Deep Reactive Ion Etching) permite tolerancias de una micra.
Esta innovación se une a la introducida ya en Basilea el pasado año de una rueda de escape fabricada en el mismo material.
Este año 2006 se presentará un modelo en serie limitada de la línea “Patek Philippe Advanced Research” con este sistema de espiral, continuando con el lanzamiento de la serie limitada a 100 piezas (ref 5250) con la rueda de escape de silicio.
Comentar adicionalmente que por este reloj (el del año pasado), se está pidiendo actualmente entorno a 60K y es un calendario anual prácticamente idéntico al 5146.
Aquí os dejo todo el troncho en inglés para el que se lo quiera leer y/o traducir.
A year after the launch of the first Swiss lever escapement with a silicon escape wheel (patent application No. EP05006186), Patek Philippe can present a further fundamental innovation in horology: the Spiromax® balance spring made of a silicon-based material. It constitutes an epochal step forward in the constant quest for isochronism in mechanical wristwatches. On the occasion of Baselworld 2006, the Geneva workshops will showcase a watch with a Spiromax® balance spring in a second limited “Patek Philippe Advanced Research” edition.
Isochronism is the key to every measurement of time based on any form of vibration – whether it originates from a pendulum, a quartz crystal, or a balance wheel. The greater the regularity of the vibration, the more accurate the rate of the movement. If the source of the vibration is perfect, it is called isochronous (isos is Greek for equal, khronos for time). The isochronism of the classic balance in portable mechanical timepieces has always been the greatest challenge for watchmakers and caliber engineers. The key factors that disrupt isochronism are
· the asymmetry of the expansion and contraction phases (“breathing”) of the balance spring
· changes of the elasticity of the spring in response to temperature changes,
· the influence of magnetic fields
· mechanical and thermal material changes at the two spring attachment points
· the influence of centrifugal forces and gravity on the balance spring
· inadequate balance-wheel poise
· the play between the curb pins.
Ever since the spiral spring emerged, countless attempts have been made to eliminate its anisochronism. The history of the so-called hairspring is characterized by four milestones:
A brief history of the balance spring
Ever since Christiaan Huygens was inspired by the Archimedes’ spiral to create a regulating organ for mechanical clocks in 1675, generations of watchmakers have tried to teach the delicate spring to contract and expand at a constant rate. Considerable progress was made in the course of the centuries as it became ever more filigreed and lighter. However, the two following steps are considered the truly epochal ones:
In 1795 Abraham-Louis Breguet empirically developed the overcoiled spring that bears his name. Later, Edouard Phillips calculated the geometry of this inwardly bent terminal curve with great precision. In a balance with a spring that develops asymmetrically, non-axial forces occur at the jewel-and-pivot contact points. They disturb the oscillating system and cause anisochronism. By contrast, the overcoil allows the Breguet spring to expand and contract symmetrically (concentrically). The downside is that it requires three times the installation height of a flat spring.
However, the thermal problem with spiral springs was not yet solved: Metal alloys tend to expand when heated, and their resilience deteriorates as well. The material becomes softer and the spring loses elasticity. Since the inertia of a balance wheel increases when it expands for thermal reasons and the spring becomes softer (less elastic), the frequency of oscillation changes and isochronism is lost.
In 1897, Swiss physicist and Nobel laureate Charles Edouard Guillaume invented an iron-nickel alloy with a particularly small coefficient of thermal expansion; the new metal also exhibited greater elasticity at rising temperatures. He called it INVAR as in invariable. Invar alloys have since been used in numerous applications where the stability of material properties in fluctuating temperature environments is an asset. Today, Invar is still the alloy most frequently used for balance springs.
Now, Patek Philippe’s Spiromax® spring is ushering in a new era that takes these developments into a new dimension with a revolutionary material technology and a totally new geometrical approach.
A new milestone: the Spiromax® spring by Patek Philippe
Spiromax® is a totally new type of balance spring made of a silicon-based material jointly developed with a research institute and other partners in the watchmaking industry within the scope of a confidentiality agreement. Accordingly, information on the new material will be released jointly by all partners in due course.
The material itself does not solve the asymmetric development problem of a spiral spring. The distinctive features of the Spiromax® spring are the exclusive geometry of its terminal curve as well as the unique design of the attachment points at both ends of the spring. Patents have been applied for these Patek Philippe inventions.
Unlike conventional springs, a Spiromax® spring cannot be terminated with a Phillips curve. Therefore, Patek Philippe’s research department sought an alternative approach and discovered an innovative terminal “curve” design that can be implemented inside the spring’s plane of oscillation. The “Patek Philippe terminal curve” exhibits a prominently thicker region at the outer end, forcing a concentric development upon the Spiromax® spring. This causes the expansion and contraction of the spring to be symmetric relative to its center over the entire plane of oscillation. And because the “Patek Philippe terminal curve” lies within this plane, the Spiromax® spring can be crafted three times thinner than a spring with a Philips or Breguet overcoil, thus facilitating the construction of ultra-thin movements.
The Spiromax® spring exhibits further important design features. In the center, it has an integral balance staff collet, and the outer end has an integral stud attachment geometry which precisely defines the active length of the spring. Both attachment points are the subject of two further patents.
In conventional springs, the inner end is attached to the collet by soldering, brazing, or clamping. This causes spring deformations at the attachment ends due to severe mechanical compression or thermal expansion, necessitating extra adjustment work.
The balance staff attachment of the Spiromax® spring is a rigid triangular outer frame that functions as a holder for an inner triangle whose sides have been made bendable and elastic by deliberate material thinning. They act like a three-jaw chuck that automatically centers itself on and tightly grips the balance staff. The rigid frame of the balance staff collet assures the optimized alignment of the inside end of the spring.
The specially shaped outer end of the Spiromax® spring engages with the corresponding cavity of the spring stud. This is a patented, proprietary design.
Both the integral balance staff collet and the integral stud attachment end of the Spiromax® spring were developed in-house and patents have been applied for by Patek Philippe.
With its paradigmatic Spiromax® spring, Patek Philippe has created an oscillating element that unites several decisive advantages. The active length of the Spiromax® spring does not need to be painstakingly adjusted for each individual movement. The Spiromax® spring vibrates with ideal concentricity even without an overcoil. It is designed to be isochronous regardless of the temperature, the orientation of the movement, or the presence of magnetic fields.
Spiromax® springs: consistently identical quality
As is the case with the silicon escape wheel, the Spiromax® spring is manufactured with the Deep Reactive Ion Etching (DRIE) process described in the annex. The material exhibits a contiguously homogeneous monocrystalline structure and can be machined to tolerances in the micrometer range. Accordingly, all Spiromax® springs are of consistent, extremely high quality, a fact reflected by the remarkable rate accuracy of movements equipped with them.
The revolutionary Spiromax® spring asserts the innovative thrust at Patek Philippe
The Spiromax® spring expresses the systematic innovation policy pursued by the manufacture in Geneva. With its strong commitment to research and development, Patek Philippe stands at the very forefront of horological exploration. At the same time, the company systematically leverages its know-how to preserve its independence and to enhance its timekeeping instruments with significant differentiation features that are recognized and highly appreciated by connoisseurs.
In the case of the Spiromax® spring, the objectives of this innovation philosophy are yet again to further improve the rate accuracy and stability of the mechanical watches crafted by Patek Philippe and to enhance their longevity and long-term value. Further tests will be conducted in the Geneva workshops before the novel Spiromax® spring is introduced as the standard for all regularly produced movements. However, a second strictly limited edition of watches will be presented within the scope of the “Patek Philippe Advanced Research” concept launched in 2005, this time with Spiromax® springs. Intended for collectors and aficionados of technical rarities, it is scheduled to debut in late March at Baselworld 2006.
The Patek Philippe Spiromax® spring at a glance
· Produced by deep reactive ion etching (DRIE)
· Concentric development thanks to patented geometry (Patek Philippe curve) for improved isochronism despite flat topology
· Temperature compensation based on material properties
· Integral stud attachment end (Patek Philippe patent)
· Integral self-centering balance staff collet (Patek Philippe patent)
· No thermal or mechanical deformation at attachment points, contrary to conventional springs
· More homogeneous material structure than Invar alloys
· Less internal friction and greater elasticity than Invar alloys
· Insensitive to minor shocks
· Reduced sensitivity to centrifugal and gravitational forces because the Spiromax® is three times lighter than conventional springs
· No degradation of rate accuracy as a result of repetitive minor shocks in daily use
· Complies with NIHS standards on randomized shocks
· Fulfills the criteria of the Geneva Seal
Buena información. Por cierto, que te dijeron de tu PP?.
"Estos son mis principios, y si no le gustan tengo otros"
Te lo cuento en privado, porque hasta que no se solucione el tema, prefiero no airearlo.Iniciado por UHREN
De momento, parece que no habrá problema, pero hasta que no lo vea, no lo creo.
A ver si saco un rato y me paso a verte. Y si lo veo con tiempo llamo a Darío a ver si se puede pasar