Invention Application
- Patent Title: METHOD FOR ADJUSTING THE OSCILLATION FREQUENCY OF A SPRUNG BALANCE ASSEMBLY
- Patent Title (中): 调整弹簧平衡装配振荡频率的方法
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Application No.: US14239965Application Date: 2012-09-05
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Publication No.: US20140157601A1Publication Date: 2014-06-12
- Inventor: Marco Verardo , Emmanuel Graf , Philippe Barthoulot , Nicola Giusto , Sacha Vorpe
- Applicant: Marco Verardo , Emmanuel Graf , Philippe Barthoulot , Nicola Giusto , Sacha Vorpe
- Applicant Address: CH Le Locle
- Assignee: Nivarox-FAR S.A.
- Current Assignee: Nivarox-FAR S.A.
- Current Assignee Address: CH Le Locle
- Priority: EP11180071.0 20110905
- International Application: PCT/EP2012/067327 WO 20120905
- Main IPC: G04D7/12
- IPC: G04D7/12

Abstract:
A method adjusting oscillation frequency of a sprung balance assembly formed at random from balance springs and balance wheels. A production mechanism is set to limit a sample standard deviation of a single batch of balance springs to a predetermined maximum value, and to limit a sample standard deviation of a single batch of balance wheels to a predetermined maximum value within a given unbalance tolerance. The mean of the balance population is classified according to the mean of the balance springs, to obtain a difference corresponding to a maximum inertia decrease value of the balances, between extreme gaussian distribution values of balances and of balance springs. A random balance spring sample is taken from the single batch of balance springs and a random balance from among the single batch of balances. The inertia of the balance is adjusted according to a torque value of the balance spring sample.
Public/Granted literature
- US09690260B2 Method for adjusting the oscillation frequency of a sprung balance assembly Public/Granted day:2017-06-27
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