Abstract:
A method of fabricating a plurality of metallic microstructures by LIGA process, the method including a flattening step or a levelling step of the resin layer before the step of electroforming the metallic microstructures permitting the resin layer to have a uniform thickness, which enables molds, and then finished metallic microstructures, to be made with uniform dimensional precision in the plane for the metallic microstructures of the same substrate.
Abstract:
The invention relates to a method (1) of fabricating a micro-mechanical component that includes the following step: b) forming (3) at least one plate that includes a frame connected by at least one bridge of material to a part of said component, wherein said part has a hole. According to the invention, the method (1) also includes the following steps: e) stacking (5) said at least one plate against a support; f) securing (7) a pin in the hole of said at least one stacked part so as to form the component; g) releasing (9) the component formed from each plate. The invention concerns the field of watchmaking.
Abstract:
The balance comprising a felloe (3), arms (4) connecting the felloe (3) to the balance staff and inertia blocks (11) is characterized in that the felloe (3) includes studs (7) in its inner surface, a threaded hole (9) into which said inertia blocks (11) are screwed from the inside, without passing beyond the external surface of the felloe (3), passing through said felloe (3) and said studs (7).
Abstract:
The present invention concerns a method of fabricating a plurality of metallic microstructures, characterized in that it includes the steps consisting in: a) taking a conductive substrate or an insulating substrate coated with a conductive seed layer; b) applying a layer of photosensitive resin over the conductive part of the substrate surface; c) flattening the surface of the photosensitive resin layer to the desired thickness and/or surface state; d) irradiating the resin layer through a mask defining the contour of the desired microstructure; e) dissolving the non-polymerized areas of the photosensitive resin layer to reveal, in places, the conductive surface of the substrate; f) the galvanic deposition of at least one layer of a metal from said conductive layer to form a unit substantially reaching the upper surface of the photosensitive resin; g) flattening the resin and the electroformed metal to bring the resin and the electroformed units to the same level and thereby form electroformed parts or microstructures; h) separating the resin layer and the electroformed parts from the substrate; and i) removing the layer of photosensitive resin from the structure obtained at the end of step g) to release the microstructures thereby formed.
Abstract:
The invention relates to a method (1) of fabricating a micro-mechanical component that includes the following step: a) forming (3) at least one plate that includes a frame connected by at least one bridge of material to a part of said component, wherein said part has a hole. According to the invention, the method (1) also includes the following steps: b) stacking (5) said at least one plate against a support; c) securing (7) a pin in the hole of said at least one stacked part so as to form the component; d) releasing (9) the component formed from each plate. The invention concerns the field of watchmaking.