CH294056A - Method of manufacturing a dial, in particular for a timepiece. - Google Patents
Method of manufacturing a dial, in particular for a timepiece.Info
- Publication number
- CH294056A CH294056A CH294056DA CH294056A CH 294056 A CH294056 A CH 294056A CH 294056D A CH294056D A CH 294056DA CH 294056 A CH294056 A CH 294056A
- Authority
- CH
- Switzerland
- Prior art keywords
- dial
- plate
- manufacturing
- timepiece
- feet
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
- G04D3/0043—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
- G04D3/0048—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms for dials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Adornments (AREA)
Description
Procédé de fabrication d'un cadran, notannnent pour pièce d'horlogerie. La présente invention a, pour objet un pro cédé de fabrication d'un cadran, notamment. pour pièce d'horlogerie.
Ce procédé est. caractérisé par le fait. qu'on frappe à ehatid un bloc de métal pour lui donner la forme d'une plaque sur une face <B>(le</B> laquelle apparaissent deux pieds, pratique au moins un trou dans cette plaque et frappe (le nouveau cette dernière pour l'amincir sans modifier les dimensions desdits pieds.
Le dessin annexé représente, à titre d'exemple, dans ses différentes phases de fabrication, un cadran de montre obtenu par le procédé suivant l'invention.
La fi-. 1 est une vue en. plan du cadran dans sa première phase.
La fi#y. 2 est une coupe suivant 11-11 de la fig. 1.
La fig. 3 est une vue en plan dans sa deuxième phase.
La fig. 4 est une coupe dans sa troisième phase.
1, i fi-. :, est une vue en plan dans sa quatrième phase et, la fi;-. 6 est une coupe suivant VI-VI de la fi-. 5.
On utilise, pour la fabrication de ce cadi-ail, tin bloc de métal que l'on frappe à chaud de faon à lui donner la forme d'une plaque 1, relativement épaisse, de l'ordre du millimètre, sur une face de laquelle apparais sent des pieds 2 qui ont déjà, après cette opé ration, leurs dimensions définitives. Un trou 3 est pratiqué à mi-distance entre les pieds 2 (fig. 3). La plaque 1 est ensuite soumise à une nouvelle opération de frappe, mais à froid cette fois-ci, les pieds 2 étant logés dans des trous correspondants de la matrice. Cette opé ration amincit la plaque qui présente alors une épaisseur de l'ordre du demi-millimètre, sans que les pieds 2 subissent aucune déforma tion; par contre, le trou central 3 se rétrécit. (fig. 4).
On a donc soin, au moment de percer ce trou, de lui donner une dimension légère ment supérieure à la dimension définitive que l'on veut obtenir. D'autres trous, par exemple pour l'aiguille des secondes, pourraient. être percés dans ce cadran en même temps que le trou central, et. en prenant les mêmes pré cautions.
Enfin, la dernière opération consiste à dé couper la plaque 1 à la presse pour lui donner. son pourtour définitif (fig. 5) qui est ici eir- culaire. On peut aussi rectifier, par la même occasion, le ou les trous que présente le cadran.
A method of manufacturing a dial, in particular for a timepiece. The present invention relates to a process for manufacturing a dial, in particular. for timepiece.
This process is. characterized by the fact. that we strike at ehatid a block of metal to give it the shape of a plate on a face <B> (the </B> which appear two feet, make at least one hole in this plate and strike (the new this last to thin it without modifying the dimensions of said feet.
The appended drawing represents, by way of example, in its various manufacturing phases, a watch dial obtained by the process according to the invention.
The fi-. 1 is a view in. shot of the dial in its first phase.
The fi # y. 2 is a section on 11-11 of FIG. 1.
Fig. 3 is a plan view in its second phase.
Fig. 4 is a cut in its third phase.
1, i fi-. :, is a plan view in its fourth phase and, the fi; -. 6 is a section along VI-VI of fi-. 5.
For the manufacture of this cadi-garlic, a block of metal is used which is hot struck so as to give it the shape of a relatively thick plate 1, of the order of a millimeter, on one side of which appears 2 feet which already have, after this operation, their final dimensions. A hole 3 is made halfway between the legs 2 (fig. 3). The plate 1 is then subjected to a new striking operation, but this time cold, the feet 2 being housed in corresponding holes in the die. This operation thins the plate which then has a thickness of the order of half a millimeter, without the feet 2 undergoing any deformation; on the other hand, the central hole 3 narrows. (fig. 4).
We are therefore careful, when drilling this hole, to give it a dimension slightly greater than the final dimension that we want to obtain. Other holes, for example for the seconds hand, could. be drilled in this dial at the same time as the central hole, and. by taking the same precautions.
Finally, the last operation consists in cutting the plate 1 with the press to give it. its final perimeter (fig. 5) which is here circular. It is also possible, at the same time, to rectify the hole or holes in the dial.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH294056T | 1951-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH294056A true CH294056A (en) | 1953-10-31 |
Family
ID=4488381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH294056D CH294056A (en) | 1951-12-03 | 1951-12-03 | Method of manufacturing a dial, in particular for a timepiece. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH294056A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1039355A1 (en) * | 1999-03-24 | 2000-09-27 | Eta SA Fabriques d'Ebauches | Process for manufacturing indicator organs and indicator organ manufactured accordingly |
US6668456B1 (en) | 1999-03-24 | 2003-12-30 | Eta Sa Fabriques D'ebauches | Method for manufacturing a display element for a timepiece and display element manufactured in accordance with such method |
-
1951
- 1951-12-03 CH CH294056D patent/CH294056A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1039355A1 (en) * | 1999-03-24 | 2000-09-27 | Eta SA Fabriques d'Ebauches | Process for manufacturing indicator organs and indicator organ manufactured accordingly |
US6668456B1 (en) | 1999-03-24 | 2003-12-30 | Eta Sa Fabriques D'ebauches | Method for manufacturing a display element for a timepiece and display element manufactured in accordance with such method |
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