Method for manufacturing timepiece thermocompensated hairsprings of precise stiffness

The method for manufacturing timepiece hairsprings according to the invention comprises the following successive steps: a) forming hairsprings in a wafer, b) forming a thermal compensation layer on the hairsprings, c) identifying the hairsprings having a stiffness within a predetermined range, d) op...

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Bibliographic Details
Main Authors MAIER, FREDERIC, JEANNERET, SYLVAIN
Format Patent
LanguageChinese
English
Published 21.03.2023
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOROLOGY
LIGHTING
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL
MECHANICALLY-DRIVEN CLOCKS OR WATCHES
PHYSICS
SHOCK-ABSORBERS
SPRINGS
THERMAL INSULATION IN GENERAL
TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
WEAPONS
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Summary:The method for manufacturing timepiece hairsprings according to the invention comprises the following successive steps: a) forming hairsprings in a wafer, b) forming a thermal compensation layer on the hairsprings, c) identifying the hairsprings having a stiffness within a predetermined range, d) optionally, detaching from the wafer the hairsprings identified in step c), e) modifying the other hairsprings so that the stiffness of at least some of them is within the predetermined range, f) detaching from the wafer these other hairsprings and, if they have not been detached in step d), the hairsprings identified in step c). This method makes it possible to reduce manufacturing dispersions between the hairsprings.
Bibliography:Application Number: TW20198105999