Assembly of a part that has no plastic domain
AssigneeETA SA Manufacture Horlogere Suisse
InventorsThierry Conus, Marco Verardo, Igor Saglini, Frederic Kohler
Life of this patent
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Abstract
An assembly of an axially extending member, made of a first material, in an aperture of a part, made of a second material having no plastic domain. The part includes pierced holes forming an elastic deformation mechanism distributed around the aperture thereof. Further, the member includes an elastically and plastically deformed, radially flared portion that radially grips a wall of the part surrounding the aperture by stressing the elastic deformation mechanism, so as to secure the assembly in a manner that is not destructive for the part. The assembly can be used in the field of timepieces.
Claims14
A method of assembling an axially extending member made of a first material in a part made of a second material having no plastic domain, comprising:
- a) forming the part with an aperture and pierced holes distributed around the aperture intended to form elastic deformation means;
- b) inserting a radially flared portion of said member into the aperture without any stress;
- c) elastically and plastically deforming the flared portion of said member in the aperture by moving two tools towards each other axially, respectively on top and bottom parts of said flared portion, so as to exert a radial stress against the wall of the part surrounding the aperture, by stressing said elastic deformation means of the part, in order to secure the assembly in a manner that is not destructive for said part.
Dependencies are inferred from the claim text.