scansioni laser 3d

[ivan 82]

Hello everyone, I am new to the forum, my name is ivan and I hope to have written in the correct section. a few days ago I scanned engine casings, the idea was to extract them from the full. they gave me two types of files one in stl and the other in iges; later they advised me to turn them through geomagic with the intention of not having to redesign everything with the cad, but now the miller says that these scans turned into solid can not use them. Can you tell me what you can do? or if the only solution is redesigning everything. Thank you.

 

[xLOGANx]

Hi, ivan.
Excuse me but could you be clearer about your problem? Can't you open the scans? Can't you see the solids?
Maybe we can help you out.

 

[ivan 82]

hi my problem is that I scanned engine casings, because I wanted to get them out of the full, as a friend of mine claimed that there were programs that would allow me to turn the stl file into solid, unfortunately also with such programs we discovered that I still have to redesign it with an exorbitant cost and a lot of time.

 

[maxopus]

the friend did it out of the vase, reverse engineering is a "artisanal" operation, although supported by sophisticated measuring instruments such as a laser scanner.

 

[Fulvio Romano]

I don't understand why but it's hundreds of people sincerely convinced that when you scan, then it does all the pc, and if they ask you hours of work they're just modelers trying to scam you.

I have experienced several times the difficulties of digesting to a cam a practically perfect 3d math but with not compatible tolerances, wrong rays, etc. thinking of taking a tetrahedral mesh in stl and "transforming it into a hectic solid" is simply absurd.

 

[mibit]

place that the sl is sufficiently precise as geometric definition and distribution of the triangles, the simplest solution is to fresare directly the sl, bypassing the solid. there are cams able to do it even in 5 axes continuously.

 

[beppino]

place that the sl is sufficiently precise as geometric definition and distribution of the triangles, the simplest solution is to fresare directly the sl, bypassing the solid. there are cams able to do it even in 5 axes continuously.

Yes, there are cams that rub the stl, and also well. but from there, to fresare a carter only from stl in my opinion we pass.
if the definition is good, are the holes scanned to the bottom?
There are spray ribs, and if yes, they are scanned completely (from all directions)?
the worked parts of cnc, will be planar / cylindrical / with well defined edges. Does the scan respect all edges and geometric parts?

In my opinion, to do a good job, the only way is reverse eng. with cost and time.

 

[xLOGANx]

Hi, ivan. as it rightly supports max, reverse remains an artisanal "low" activity....even if it exploits very advanced tools. I think it's not possible to send to a car, a "triangularized" sts file. the exorbitant cost of the reverse operation is due to the time that it is used to reconstruct the model (in your case, then, it is carter).
and, however, all the reverse operation depends on the type of scan done: the more the relief is accurate and the less the time necessary to rebuild the model.
Do you have any way to post any scans you have?