摘要:
A method of fabricating a balance spring assembly (1) in silicon including a hairspring (2) made in a wafer of given crystalline orientation, in a plane (P). The volume of the assembly (1) is broken down into sub-components, inscribed in parallelepiped prisms, in secant pairs, at the junction areas, perpendicular to each other, each made in a wafer selected for the thickness or crystalline orientation thereof. An outer curve (4) is made in an orthogonal plane to that of the hairspring (2) joining it directly to a point in space, the projection of which into the plane (P) is located external to the hairspring (2). The sub-components are assembled at the junction areas.
摘要:
Method of fabricating a balance spring assembly in silicon including a hairspring made in a wafer of given crystalline orientation, in a plane. The volume of the assembly is broken down into sub-components, inscribed in parallelepiped prisms, in secant pairs, at the junction areas, perpendicular to each other, each made in a wafer selected for the thickness or crystalline orientation thereof. A terminal curve is made in an orthogonal plane to that of the hairspring joining it directly to a point in space, the projection of which into the plane is located external to the hairspring. The sub-components are assembled at the junction areas by assembling device.
摘要:
A method of fabricating a micromechanical part in a single-piece made of a synthetic carbon-allotrope includes forming a substrate which includes the negative cavity for the micromechanical part to be fabricated, coating the negative cavity of the substrate with a layer of the synthetic carbon allotrope in a thickness of between 0.2 μm and 20 μm, the thickness being less than the depth of the negative cavity, removing from the substrate a larger thickness than the thickness of the deposited layer, so as to leave a limited thickness of the layer of material in the negative cavity, and removing the substrate so as to release the single-piece micromechanical part formed in the negative cavity comprising an external surface of comparable roughness to that of the substrate.
摘要:
An oscillating mechanism for a timepiece movement, including a first rigid element and a second rigid element, each one fixed on a different element of the movement and at least one of which is mobile relative to the other and pivots about an axis. The mechanism is monobloc and flexible with a variable geometry, and includes a first elastic restoring mechanism producing an elastic connection between the first rigid element and an intermediate rigid element, and a second elastic restoring mechanism producing an elastic connection between the intermediate element and the second rigid element, which all are coplanar according to one plane and configured to be deformed according to the plane.
摘要:
The invention relates to a micromechanical part (11, 21, 31, 41, 51, 61) made of a single-piece material. According to the invention, the part has an elementary section formed of at least two secant and non-aligned segments so that one of the at least two segments forms the height (e3) of the micromechanical part (11, 21, 31, 41, 51, 61), the height being greater than the thickness (e1) of each segment.The invention also concerns the method of fabricating the part.
摘要:
The invention concerns a timepiece balance (1), with inertia adjustment including a hub (2) pivoting about a balance staff (3) and a felloe (5), connected to said hub (2) by a joining surface (6).It is wherein said felloe (5) is made in a single piece with said joining surface (6) and said hub (2) in a micro-machinable material, or silicon, or quartz, or a compound thereof, or an alloy derived from MEMS technology, or an alloy obtained by the “LIGA” method, and in that it includes at least a first resilient arm (40) including coupling means (41) arranged for cooperating, in various coupling positions, with complementary coupling means (42) comprised in said felloe (5) to form, in the coupling position, a closed loop, the inertia of which relative to said balance staff (3) is variable according to said coupling positions.The invention also concerns a sprung balance or a timepiece incorporating a balance of this type.
摘要:
The invention relates to a resonator (11) with a balance (13) and balance spring (15) including a balance (13) mounted on a staff (17), a balance spring (15) integral with a collet (14) and mounted on said staff. According to the invention, the collet (14) includes an integral protruding portion or bump (16) forming a pin arranged for cooperating with an escape system.The invention concerns the field of timepiece movements.
摘要:
The invention relates to a method (1) of fabricating a composite micromechanical component (41, 41′) including the following steps: a) providing (10) a substrate (9, 9′) that includes a horizontal top layer (21) and a horizontal bottom layer (23) made of electrically conductive, micromachinable material, and secured to each other by an electrically insulating, horizontal, intermediate layer (22); b) etching at least one pattern (26) in the top layer (21) through to the intermediate layer (22), so as to form at least one cavity (25) in the substrate (9, 9′); c) coating (16) the top part of said substrate with an electrically insulating coating (30); d) directionally etching (18) said coating and said intermediate layer so as to limit the presence thereof exclusively at each vertical wall (51, 52) formed in said top layer; e) performing (5) an electrodeposition by connecting the electrode to the conductive bottom layer (23) of the substrate (9, 9′) to form at least one metal part (33, 43, 43′) of said component; f) releasing the composite component (41, 41′) from the substrate (9, 9′). The invention concerns the field of micromechanical components, particularly for timepiece movements.
摘要:
A method of assembling a member made of a first material in a part made of a second material having no plastic domain, including forming the part with an aperture; inserting an intermediate part, which is made of a third material and includes a hole into the aperture without any stress; introducing the member into the hole without any stress; elastically and plastically deforming the intermediate part by moving two tools towards each other axially, respectively on the top and bottom parts of the intermediate part, so as to exert a radial stress against the member and against the wall of the part surrounding the aperture by causing the elastic deformation of the part, in order to secure the assembly in a manner that is not destructive for the part. The member can be a time piece.
摘要:
The invention relates to a system (9) for securing a part (7) made of a material with no usable plastic domain, including a securing device (11) on an arbour (3) passing through a hole (8) in said part. According to the invention, the securing device (11) includes a recess (4) that communicates with the hole (8) in said part and securing means (6) attached to the arbour (3) and at least partially matching the shape of the recess (4), so as to make the movement of the part (7) integral with that of the arbour (3).The invention concerns the field of timepiece manufacture.