small series parts and very narrow tolerances

[gianniturbina]

Bye to all,
I write to ask for advice.
I have to make in series small details similar to gancetti and relative fixings (in the order of 3 or 4 mm of size, thickness 1.5 mm), pragonable to those of a chain of jewelry.
the required tolerances are very narrow (around 0.02 / 0.05 mm) on the parts that are to be arranged.
is also important a surface finish that allows a mechanical polishing (light);
therefore, no embossed witnesses are allowed;
wanting to point to a series production (so economical, taken away the initial investment) that technology would recommend me?
I collected information about 3d printing but the costs are very high;
Moreover it seems that 3d printing technology is not yet at this level (problem tolerances/supports/separation of parts etc.).

 

[PIETRO2002]

it would be interesting to have at least one sketch / drawing of the piece to build.
so to the eye a fine-cutting mold?

 

[gianniturbina]

thank you so much pietro;
unfortunately I cannot post drawings/images; imagine the clasp of a chain or to give you an idea, the parts of a metal zipper; I have to produce different types of details similar to these;
cutting/pressing on mould is an excellent solution; is what they are using for other details; I was asked to produce with other solution, for example, microfusions or similar.
Do you have any other ideas?
Thanks again

 

[MassiVonWeizen]

You could make merges with shelling machine, so you do more than once at a time, and then the polishes with burating

 

[gianniturbina]

thanks massive; I collect some information on the web; that you know, in Italy, there are more specialized companies in doing this job (very small parts)? Can you give me two straights?
contact you and I will;
If you have other ideas, well come... !

 

[gianniturbina]

among other things, that you know, the parts of automatic/mechanical watches, how are produced? with what system/process? gears, shafts etc...

 

[PIETRO2002]

I don't know what you use now, but think about producing details on a bihler machine?

 

[gianniturbina]

I know the machines; I had not thought about it; now I collect information about the news about these machines;
Thank you very much, very good point!

 

[PIETRO2002]

in my opinion the bihlers for these types of processing are the top...

 

[gianniturbina]

Hello, everyone! I have collected some information; bihler machines, unfortunately, are not able to produce details;
I contacted some suppliers who make mergers with mim technology, but the costs are high.
I thought of those who produce very small precision mechanical elements, such as watches or similar;
I have no idea how these elements are produced; Can you help me?