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
Application number
Other languages
French (fr)
Inventor
Piquerez Erwin
Original Assignee
Piquerez Erwin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Piquerez Erwin filed Critical Piquerez Erwin
Publication of CH294056A publication Critical patent/CH294056A/en

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04DAPPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0043Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
    • G04D3/0048Watchmakers' 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)

REVENDICATION Procédé de fabrication d'un cadran, notam ment pour pièce d'horlogerie, caractérisé par le fait qu'on frappe à chaud un bloc de métal pour lui donner la forme d'une plaque sur une face de laquelle apparaissent deux pieds, pratique au moins un trou dans cette plaque et frappe de nouveau cette dernière pour l'amin cir sans modifier les dimensions desdits pieds. SOUS-REVENDICATION: Procédé suivant la revendication, caracté risé par le fait qu'on perce un trou au milieu de la plaque. CLAIM Process for manufacturing a dial, in particular for a timepiece, characterized by the fact that a metal block is hot struck to give it the shape of a plate on one face of which two feet appear, practical at least one hole in this plate and strikes the latter again for the amin cir without modifying the dimensions of said feet. SUB-CLAIM: Method according to claim, characterized in that a hole is drilled in the middle of the plate.
CH294056D 1951-12-03 1951-12-03 Method of manufacturing a dial, in particular for a timepiece. CH294056A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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