US 12,339,627 B2
Method for manufacturing a timepiece bearing
William Carreno, Geneva (CH); Vannina Linck, Saint-Julien-en-Genevoix (FR); Alexandre Oliveira, Amancy (FR); and Cédric Moreaux, Les Rousses (FR)
Assigned to ROLEX SA, Geneva (CH)
Appl. No. 17/634,018
Filed by ROLEX SA, Geneva (CH)
PCT Filed Aug. 12, 2020, PCT No. PCT/EP2020/072569
§ 371(c)(1), (2) Date Feb. 9, 2022,
PCT Pub. No. WO2021/032552, PCT Pub. Date Feb. 25, 2021.
Claims priority of application No. 19192401 (EP), filed on Aug. 19, 2019; and application No. 20168538 (EP), filed on Apr. 7, 2020.
Prior Publication US 2022/0291634 A1, Sep. 15, 2022
Int. Cl. G04B 31/06 (2006.01); B23H 9/06 (2006.01); G04B 31/008 (2006.01); G04B 31/04 (2006.01)
CPC G04B 31/06 (2013.01) [B23H 9/06 (2013.01); G04B 31/008 (2013.01); G04B 31/04 (2013.01); B23H 2200/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for manufacturing a pivot bearing for pivoting of a timepiece component, wherein the method comprises:
boring a hole in a bearing blank along an axis intended for the pivoting of the timepiece component, the hole including a first pivot zone of the bearing, the first pivot zone being located at a distance from a first face of the bearing blank, then
laser engraving, in the bearing blank, a second clearance zone of the bearing, the second clearance zone of the bearing opening at a first face of the bearing blank and extending from the first face to the first pivot zone, then
removing material by wear, at a boundary zone of the first pivot zone of the bearing and the second clearance zone of the bearing, so that after the removing of material by wear, the first pivot zone and the second clearance zone of the bearing are juxtaposed and connected to each other by a rounded connection in the boundary zone.