Rolex Sa

Vannina Linck

Alexandre Oliveira

William Carreno

Sergio De Almeida Graça

Cédric Moreaux

A method for manufacturing a pivot bearing () for the pivoting of a timepiece component (), in particular a pivot stone, includes:—boring (E) a hole () in a bearing blank () along an axis (A) intended for the pivoting of a timepiece component (), this hole () forming a start point () of a first pivot zone () of the bearing (), then—laser engraving (E), in the blank (), in particular using a femtosecond laser, a second clearance zone () of the bearing (), juxtaposed with the start point () of a first pivot zone (), this second clearance zone () of the bearing () opening at a first face () of the bearing () blank (), then—removing material by wear (E), in particular by olive-cutting, at the start point () of the first pivot zone () of the bearing () and a boundary zone () between the start point () and the second clearance zone () of the bearing () in order to form a first pivot zone () and a second clearance zone () that are juxtaposed, connected to each other by a rounded connection.

Method for manufacturing a timepiece bearing

The method of manufacturing a timepiece shaft () includes grinding a ceramic piece, especially to form a balance shaft (), having a functional portion () including at least one part () of a pivot-shank () and/or at least one part () of a pivot (), the first functional portion being made of ceramic and a first outer diameter (D) of the first functional portion being less than 0.5 mm, or less than 0.4 mm, or less than 0.2 mm, or less than 0.1 mm.

Method of manufacturing a timepiece shaft

A component of a winding device, in particular an automatic winding device, of a timepiece movement, wherein it is made of austenitic stainless steel and wherein it comprises at least one friction surface hardened by carbon or nitrogen type atoms introduced into the austenitic stainless steel over a predetermined depth.

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Saint-Julien-en-Genevois, France

Vannina Linck