Assembly of a part that has no plastic domain

摘要

An assembly of a member, made of a first material in an aperture of a part, made of a second material having no plastic domain, using an intermediate part made of a third material, mounted between the member and the part. The intermediate part includes a hole for receiving the member. The part includes pierced holes forming a deformation mechanism distributed around the aperture thereof. The elastically and plastically deformed intermediate part radially grips the member and stresses the elastic deformation mechanism of the part so as to secure the assembly in a manner that is not destructive for the part. Such an assembly can for example be used in the field of timepieces.

主权项

1. A method of assembling a member made of a first material in a part made of a second material, the second material being a ceramic or a silicon-based material, the method comprising:
a) forming the part with a solid central region including an aperture and then piercing holes in the solid central region in a circular pattern around the aperture to form elastic deformation means; b) inserting an intermediate part, made of a third material and including a hole, into the aperture without any stress; c) introducing the member into the hole of the intermediate part without any stress, d) elastically and plastically deforming the intermediate part by moving two tools towards each other axially above and below the intermediate part so as to exert a radial stress against the member and against a wall of the part surrounding the aperture by stressing the elastic deformation means of the part and to secure the assembly in a manner that is not destructive for the part.