要“翻蹄亮掌”还看宝玑磁悬浮摆轴 7727

磁悬浮摆轴的问世，使机芯能够控制磁力发生在机械手表中的负面作用，而且能够驯服磁力，让它服务于提升摆轮的摆幅和等时性。

宝玑是丰富创造力、前沿革新技术、卓越制表工艺的代名词。自1775年至今，宝玑研发出一款又一款更精准、更可靠的机械机芯。从早期的pare-chute避震装置、末端向上弯曲的“宝玑游丝”到革命性的陀飞轮，宝玑层出不穷的革新技术不仅在制表史上留下光辉篇章，还对后世的制表方式带来了深远影响。2006年，宝玑(所在的斯沃琪集团)推出配有硅质游丝和硅质擒纵机构手表，这项万众瞩目的高端科技，源于经年研发的丰硕成果，它将时计的精准性能推向了新的高度。宝玑着力在高频与磁力领域的开拓，近几年来所推出的新表款，展示出宝玑在这两方面的最新成果，同时也证明，宝玑的钟表研发应用不仅仅是一种可能，而是能够切实改进机芯性能的真实现实。

宝玑Classique Chronométrie 7727手表,让磁力为我所用

在过去10年的时间里，品牌申请的专利超过100个，且大多数的专利是与计时技术以及鸣响装置有关。2010年11月7日生效的专利Magnetic Pivot系统，则与磁力技术相关，宝玑首创采用磁力效应来改善手表走时的精准性及可靠性。

宝玑这款最新力作搭载574DR手动上弦机芯，精准走时源于10赫兹的超高摆频，该技术首次亮相于宝玑Type XXII系列计时表之中，这个由摆轮及摆轮游丝所带来的超高频率提升了手表在计时过程中的精准度。得益于品牌所擅长的硅质技术，新款Classique Chronométrie手表配备了专门设计的硅质双层摆轮游丝、硅质擒纵叉、硅质擒纵轮，使得这款手表不仅具有超高摆频，还具备绝佳精密度。也就是说，它把一般介于300-400微瓦的最佳时计调节动力，提高到了830微瓦。宝玑凭借出色的制表技术，使得超高摆频的7727手表具有长达60小时的动力储备。

然而，若论宝玑Classique Chronométrie手表在技术上的重大突破，则当属磁悬浮摆轴（Magnetic Pivot）的应用。或许在几年之后，这项技术将会得到更加广泛的运用。磁悬浮摆轴的问世，使宝玑不仅能够控制磁力发生在机械手表中的负面作用，而且能够驯服磁力，让它服务于提升摆轮的摆幅与等时性。其基本概念就是运用两个宝石轴承结合强而有力的微磁石(约1.3 T)，且各自与摆轮轴心的两末端相连结，也就是说，制表师设计出一个随时会自动修正调整的动态平衡系统。当一方的磁力强过另一方时，摆轮轴心的一端与红宝石轴承维持稳定的接触，磁化感应经由摆轮轴心产生一股磁性波动，并逐渐发展成为影响摆轮轴心的回转惯性力。由于，介于轴心与宝石轴承间的磁性联结性强过地心引力，因此无论手表位于什么方位，轴心都会持续受到宝石轴承影响。此外，此系统也扮演着避震器的角色。如果齿轮轴心尖端偏移至不适当的位置，磁力会将其导正拉回，增加摆轴尖端的横向位移范围。当磁性回复最大波动时，轴心将会自动返回其正确的位置。如此在人造重力环境下，摆轮轴心完全不受地心引力的影响，更稳定，更能有效抗震。7727手表性能检测结果是平均每天-1/+3秒的误差，相比瑞士官方天文台标准（COSC）的-4／＋6秒优化了很多。更重要的是，６方位检测到每日平均误差降低至－２／＋４秒（最大动力时）。

Classique Chronométrie表盘设计为偏心时分盘，12点位是小秒针，动力储存显示在５时位置，以十分之一秒为单位的专利硅质指针位于1点位的小秒盘上。经典的减震设计，让走时更轻盈，丝毫不会影响摆轮的律动。pare-chute避震装置于2点位清晰可见，再次展现宝玑大师于1790年的创新工艺远见的同时，亦令手表更纤薄。

每一个工艺细节均透露出宝玑巧夺天工的制表技艺，表盘由全手工精心雕琢６种不同纹饰。

QUALiCOMM就是品质传播的意思，这是双语公众号，我编辑的钟表、珠宝、生活方式的内容从这里分享。这个微信号是com4133, 麻烦大家推荐给你们的朋友，只要在微信公众号里搜“品质传播33”或com4133即可，我试过了，很灵。谢谢！想与《名表手边书》和《顶级名表》的作者联系？回复“3”看看。查看过往内容，回复“L”(大小写不限)  。This is a bilingual wechat service acount by L'Atelier QUALiCOMM runned by Henri Liu. Tks for reading.

For English reading:

THE MAGNETIC PIVOT.

Breguet Classique Chronométrie 7727

The innovative spirit of the Breguet brand has contributed to a number of inventions that have improved time measurement. Breguet pursues its quest for precision and invests in the research and development of new technologies and materials. The brand has thus been able to file more than 100 patents in the last 10 years, especially concerning improved timekeeping and striking mechanisms. But with its patent of November 7, 2010 for a magnetic pivot, the brand has set another milestone in watchmaking history by harnessing magnetism to the service of precision and reliability. The Breguet Classique Chronométrie 7727 model shows that the company has reached its objectives and set a new level in the search for perfection.

new Hand-wound calibre 574DR takes advantage of the latest developments from the workshops to deliver impressive rating results. This achievement was mainly due to its balance frequency of 10Hz. When it was applied for the first time in the Type XXII chronograph, this frequency was shown to have improved the time-keeping performance of the balance and spring. Breguet’s mastery of silicon enables the Classique Chronométrie to be fitted with a double balance-spring, pallet lever and escape wheel, all in specially prepared silicon that reaches the high frequency necessary for optimum precision. The result is a regulating power equivalent to around 830 microwatts, an achievement when one considers that the regulating capacity of the best chronometers is between 300 and 400 microwatts. Despite its high frequency, the reference 7727 has a power reserve of 60 hours thanks not only to the energy stored in its barrels, but also to the very high quality balance.

However, the major innovation of this Classique Chronométrie model is the application of magnetic pivots. It is likely that the impact of this invention will not be felt for a few years yet. With the magnetic pivot, Breguet not only controls the negative effects of magnetism in a watch, but also uses magnetic force to improve the pivoting, rotation and stability of the balance staff. Breguet’s watchmakers have designed a stable system using two endstones incorporating powerful micro-magnets (approx. 1.3 teslas) that keep the balance staff centred and self-adjusting. One of the magnets is stronger than the other to create a magnetic gradient. A magnetic flux, generated within the balance-staff induces a magnetic attraction that keeps the end of the pivot in contact with the endstone.

Held in an artificial gravitational force, the balance staff is unaffected by the different positions of the watch and the conditions at each pivot remain unchanged. If a shock knocks the balance staff sideways, the system acts like a pare-chute to return it to its position, except that magnetic forces re-centre the staff to regain maximum magnetic flux. The result is a balance that is insensitive to gravity, more stable and resistant to shocks. These innovations bring the reference 7727’s average rate to -1/+3 seconds a day, well within the COSC chronometer standard of -4/+6 seconds a day. More importantly, the difference in rate between the six positions has been brought down to -2/+4 seconds a day (maximum wind).

In Classique Chronométrie, the dial shows an off-centre chapter of hours and minutes, small seconds at 12 o'clock, a power-reserve indicator at 5 o'clock and a tenth-of-a-second indicator at 1 o'clock having a patented lightweight silicon hand with low inertia that doesn’t affect the balance. The pare-chute is visible at 2 o'clock, both as a reminder of A-L Breguet’s 1790 invention and to make the timepiece slimmer.

Stylistic details unfailingly denote a work by Breguet. The dial is engine-turned in six patterns: “Geneva waves” in the centre, a hobnail pattern for the small seconds, sunrays on the tenth-of-a-second dial and chevrons for the power-reserve indicator. The hours chapter is cross-hatched while a barleycorn pattern decorates the outer edge. The hands are in polished steel with the Breguet open tip, while the case in rose or white gold