CH287616A - Method of manufacturing watch parts. - Google Patents

Description

  

  Method of manufacturing watch parts. We know. that a large part of watch parts are obtained, starting from the mass, by removal of chips (turning, milling). These parts require great precision, because no deformation is allowed once completed, and so far could not be performed entirely by other means, except for testing purposes. cutting out shaped elements and assembling a part by riveting.



  This riveting, acting at a few points only, on very thin elements, creates a curving of the latter which it is very difficult to recover subsequently by machining, because these elements bend. under the tool.



  It appears. necessary, in order to meet the requirements of precision and finish of timepieces, to secure the elements, whatever they may be, in such a way that the finished part will be similar to that obtained by conventional machining processes from the point of view of precision and homogeneity of the whole. The present invention relates to a method for manufacturing the following watch parts. which are superimposed cut elements and joined together surface to surface.

      In the accompanying drawing, there is shown by way of example the constitution of a part obtained by means of the method according to the invention, starting. elements which, stuck step by step, form a set formed of four layers.



  To manufacture the part shown, we start with strips of metal of carefully chosen thickness from which we cut, holes included, simple constituent elements <I> A, </I> B, <I> C, D, E </I> (fis. Z).



  It is. easy to understand that by stacking these simple elements judiciously marked, we compose a plate (fis. <B> 1). </B> The elements can be marked for example from four holes (called in horology holes of work) V, X. Y, Z, coinciding from one element to another.



  It is then easy, if prior to cutting the elements, the metal strips have been tinned or coated with a resin of the type of the Araldite >> brand product, to solidify the whole made. 1. under the combined action of a pressure maintaining the block thus formed and of heating with the aim of producing the polymerization of the Araldite brand product or the melting of the tin.



  Without departing from the scope of the invention, it is obvious that cold or hot welding or bonding processes can be used, we will indicate for example: interposition of thin solder plates or point alloy, melting lower than that of the metal of the components of the part and heating of the whole. The goal to be achieved is always a surface-to-surface consolidation of the constituent elements.

 

Claims (1)

CLAIM: Process for manufacturing watch parts according to which cut-out elements are superimposed and joined together surface to surface. SUB-CLAIMS 1. Method according to claim, charac terized in that the surface-to-surface connection is effected by gluing. 2. Method according to claim, charac terized in that the fastening on face to surface is done by welding.