Diamond-polished applique for horology

Patent metadata

Field	Value
Publication number	US-11009834-B2
Application number	US-201916271911-A
Country	US
Kind code	B2
Filing date	Feb 11, 2019
Priority date	Mar 6, 2018
Publication date	May 18, 2021
Grant date	May 18, 2021

Abstract

A method for fabricating an applique for horology including a visible upper surface, and a lower surface from which protrudes at least one securing foot: a rough piece is made as a straight workpiece; this rough piece is deformed to form a blank so as to form an upper curve; this blank including this feet is machined; this blank is mounted on a tool having a support surface complementary to the lower surface of this blank, a recess for housing each foot, gripping means and/or an adhesive for securing each blank; the upper curve of this blank is machined with at least one final diamond-polishing operation to form this upper surface.

First claim

The invention claimed is:

1. A method for fabricating an applique for horology, comprising an upper surface intended to be seen by a user, and a lower surface for resting on a dial or a structure of a timepiece, and at least one foot protruding from said lower surface, comprising a series of steps wherein first a rough piece is made in the form of a straight workpiece with a flat lower surface from which projects a protuberance for forming each said foot, on the opposite side from a top of said rough piece, then a blank is made with at least a machining of each said foot, then said blank is mounted on at least one tool having at least one support surface complementary to the lower surface of said blank, said tool further including at least one recess for housing each said foot, said tool further including a gripping means and/or an adhesive for securing each said blank, and then the upper portion of said blank is machined with at least one final diamond-polishing operation to form said upper surface, wherein, once rough piece is made, said rough piece is deformed to form said blank so as to form an upper curve resulting from the deformation of said top, and wherein, on said tool, said upper curve is re-machined with at least one final diamond-polishing operation to form said upper surface.

2. The method for fabricating an applique for horology according to claim 1 , wherein, when said blank is made or formed, at least one said foot is made by machining and/or straightening said protuberance from which said foot is formed.

3. The method for fabricating an applique for horology according to claim 2 , wherein, when said blank is made or formed, each said foot is made by machining and/or straightening said protuberance from which said foot is formed.

4. The method for fabricating an applique for horology according to claim 2 , wherein all of said feet are made before said blank is mounted on said tool, each said recess of the tool is arranged to receive at least one said foot or has a complementary shape to at least one said foot.

5. The method for fabricating an applique for horology according to claim 1 , for forming said upper surface with plane symmetry on either side of a main edge defining a plane of symmetry, wherein at least one said tool is made wherein each said support surface is disposed such that said plane of symmetry is perpendicular to an axis of rotation about which said tool is rotatable.

6. The method for fabricating an applique for horology according to claim 1 , for forming said upper surface resulting from the juxtaposition of basic surfaces, at least one of which is a flat basic surface, wherein at least one said tool is made for forming the flat basic surface, wherein each said support surface is disposed such that said flat basic surface is parallel to an axis of rotation about which said tool is rotatable.

7. The method for fabricating an applique for horology according to claim 1 , wherein all of the machining of said upper curve is performed to form said upper surface without removing said blank from a single tool.

8. The method for fabricating an applique for horology according to claim 1 , wherein the machining of said upper curve is broken down to form said upper surface by using a plurality of said tools on which said blank is successively mounted.

9. The method for fabricating an applique for horology according to claim 1 , wherein at least one said tool is made including angular indexing means for positioning each said blank with respect to said tool, and for the spatial positioning of the machining and/or diamond polishing means with respect to each said blank mounted on said tool.

10. The method for fabricating an applique for horology according to claim 1 , wherein said machining and/or said diamond polishing of said upper surface is performed with a machining and/or diamond polishing unit movable on 5 axes with respect to each said blank.

11. The method for fabricating an applique for horology according to claim 1 , wherein said rough piece is made in the form of a numeral or symbol with a bead extending around at least one opening comprised in said numeral or symbol, said bead including said lower surface which carries said protuberance for forming each said foot.

12. The method for fabricating an applique for horology according to claim 1 , wherein said rough piece is made hollow, with said flat lower surface limited to a peripheral support edge, which carries the protuberance for making each said foot, and/or which surrounds a pocket from which said protuberance protrudes to form at least one said foot.

13. The method for fabricating an applique for horology according to claim 1 , wherein said rough piece is made solid, with said flat lower surface devoid of a pocket and which carries said protuberance for forming each said foot.

14. The method for fabricating an applique for horology according to claim 1 , wherein said applique is made comprising a curved and/or bent lower surface for resting on a dial or a structure of a timepiece, and wherein the following steps are performed in succession, wherein first a rough piece is made in the form of a straight workpiece with a flat lower surface from which projects a protuberance for forming each said foot, on the opposite side from a top comprised in said rough piece, then said rough piece is deformed to form a blank having a lower curve which includes at least one portion of said curved lower surface, said blank having an upper curve resulting from the deformation of said top, then said blank is mounted on the at least one tool including at least one support surface complementary to said at least one portion of said curved lower surface or to said lower curve, said tool further comprising at least one recess for housing each said protuberance or each said foot when said protuberance is identical to said foot, said tool further including a gripping means and/or an adhesive for securing each said blank, and then said upper curve is machined with at least one final diamond polishing operation to form said upper surface.

15. The method for fabricating an applique for horology according to claim 14 , wherein said lower curve is made forming the whole of said curved lower surface.

16. The method for fabricating an applique for horology according to claim 1 , wherein said rough piece is made of assayed material.

17. A watch comprising at least one applique made according to the method of claim 1 .

Assignees

• Nivarox Sa

Inventors

• Trotta Carmelo
• Haefeli Frederic

Classifications

• B21H3/06

  Making by means of profiled members other than rolls, e.g. {reciprocating flat dies or} jaws, moved longitudinally or curvilinearly with respect to each other · CPC title

• G04D3/02

  Lathes, with one or more supports; Burnishing machines, with one or more supports {(metal lathes B23B; automatic lathes B23B; grinding and polishing in general class B24)} · CPC title

• B23Q3/061

  adapted for holding a plurality of workpieces · CPC title

• G04B19/12 Primary

  Selection of materials for dials or graduations {markings} · CPC title

• G04D1/0092

  Devices for positioning and sorting of the components (sorting and positioning in general B23Q) · CPC title