construction geometry from stl

[SweptBlend]

hi gurus,
I would have a problem to undergo, load a stl, which contains a surface, and different geometric entities ( planes and cylinders ),
How do I create a cylindrical surface from stl points?
Is there a function, or should I create the reference points, the reference plane, the normal plane, the sketch of a circle, and the cylindrical surface of extrusion? Do you move from style?
exists a tutorial available for the reverse part of proe (rex? / geomagic? )

thanks in advance

 

[mali_fx]

Take a look here
http://www.youtube.com/watch?v=gavm...d0086a348&playnext=1&playnext_from=pl&index=8

 

[mali_fx]

http://www.youtube.com/watch?v=ww_v2ydx2f8&feature=related

 

[SweptBlend]

beeelllo,
grazie

 

[SweptBlend]

I sang victory too soon:
I am really at 0, with my rex, and I would like to try to reconstruct a series of laminated holes, shot on a surface, so that the cam I reconnect them as a drilling cycle, and not as 3a machining.. .
I tried to see iutub, but the cloud they have of demo, is already perfectmete divided, and clean... percu sezionando con un piano, automagically rebuild everything...
I try to dissect with a plan, my shaped hole, get a spline, which does not recognize me the geoemtria but "pass straight" for the hole section, not recognizing bevels,lamatures, diameter changes, tec,etc,
the solution that I found, is to build "hands" 3 points of reference, a plan, and then a sketch of a circle, but it is a work of Carthusian.... and I just.... ;-)
is there someone who has tutorials, ideas, gabole? zencs....

 

[maxopus]

I sang victory too soon:
I am really at 0, with my rex, and I would like to try to reconstruct a series of laminated holes, shot on a surface, so that the cam I reconnect them as a drilling cycle, and not as 3a machining.. .
I tried to see iutub, but the cloud they have of demo, is already perfectmete divided, and clean... percu sezionando con un piano, automagically rebuild everything...
I try to dissect with a plan, my shaped hole, get a spline, which does not recognize me the geoemtria but "pass straight" for the hole section, not recognizing bevels,lamatures, diameter changes, tec,etc,
the solution that I found, is to build "hands" 3 points of reference, a plan, and then a sketch of a circle, but it is a work of Carthusian.... and I just.... ;-)
is there someone who has tutorials, ideas, gabole? zencs....

It's a workman :biggrin:: and that's what I do.
If you can and you want to post me the... I'll look at him and let you know.

 

[SweptBlend]

Here is a fil, and wf3, where all the features were suppressed to reduce disk space.

would the purpose be to "reconstruct" revolution? the section of the shaped hole. . .

as you see I have come to define planes and surfaces, but when they dissect for a transversal plane, I am created a spline curve, not a series of lines / arches, that I could use put in revolution, to define the hole....

thanks to n advance

 

[maxopus]

And, dear sweptblend... but with the revolution you cannot get the object.
It's a handy job and in this case you can work better with section curves... I'll put a little off and I'll see you post the model.

 

[mali_fx]

I sang victory too soon:
I am really at 0, with my rex, and I would like to try to reconstruct a series of laminated holes, shot on a surface, so that the cam I reconnect them as a drilling cycle, and not as 3a machining.. .
I tried to see iutub, but the cloud they have of demo, is already perfectmete divided, and clean... percu sezionando con un piano, automagically rebuild everything...
I try to dissect with a plan, my shaped hole, get a spline, which does not recognize me the geoemtria but "pass straight" for the hole section, not recognizing bevels,lamatures, diameter changes, tec,etc,
the solution that I found, is to build "hands" 3 points of reference, a plan, and then a sketch of a circle, but it is a work of Carthusian.... and I just.... ;-)
is there someone who has tutorials, ideas, gabole? zencs....

do not think that with automatic controls you can do the swep miracles, unfortunately when there is to break the m... there is little to do, as in your case
question... .
which cam do you use for the recognition of feautures?
You know there are tolerances?
the cam I use by default I leave it to 0.1 but in extreme cases I also carry it to 0.5!(Be careful, I talk about the feature recognition tolerance)
Hi.

 

[SweptBlend]

I had to do hypermill tests.
and I wanted to understand whether it is necessary to have a revolution (on the laminated hole) , or "digests" also of the cylindrical and conical surfaces from extrusions,
for recognition tolerance, you're too far ahead, I still have to get there. . ;-)

 

[mali_fx]

I had to do hypermill tests.
and I wanted to understand whether it is necessary to have a revolution (on the laminated hole) , or "digests" also of the cylindrical and conical surfaces from extrusions,
for recognition tolerance, you're too far ahead, I still have to get there. . ;-)

I don't know hypermill but I think it's the same for all cams and generally, cams recognize any cylindrical surface within the recognition tolerance you impose!
to understand, if you give him a cylindrical surface modeled and exported with a low tolerance, and in the cam imposed the ''tolerance of recognition'' high, you should recognize the feauter.
If you feed him a cylindrical surface shaped with high tolerance, and impose that low recognition, he doesn't recognize it.

 

[SweptBlend]

Yes but to recreate 1 shaped hole I am putting 1 life !!!
and do the points, do the plan, do the circle, extrude and size,
No more...
corridor voices, tell me that other cads (only..wdfghj... nothing I can't pronounce/digitate ) have an automatic feature recogniser. . .
the feature recognizer, in proe is used only on import ? or can you also activate on stl..

 

[maxopus]

no on the stl it is not possible to recognize the features (no cad does it).
is a file made of triangles, not from surfaces or solids.
to make the hole there is no need for a life, just know the functions of the rex module and do it in a few minutes.... indeed probably a few seconds.
Just tell him that what you're going to recognize is a cylinder and you have to tell him what direction.
if the stl is correctly positioned compared to the Cartesian terna the fatigue is little.
the devading or lamaturating or rounding functions do so with normal cad functions.
It's a different working method and you don't learn in a day.

complex surfaces (such as the gum you posted) require modeling capabilities, do not do with sweep or blend.

 

[SweptBlend]

no no no, stop all, I didn't explain well, I don't care to reconstruct the sculpted surfaces, but I'm recognizing the analytical surfaces ( planes / cylinders) in order to be able to apply the drill cycles

thinkdisaster with its reshape module ( geomagic subfunction) has a piano/coni/cilindri recognition function and 4 sides surfaces from stl

solidzoz, has a function of automatic recognition from the stl file (which is what I was trying to simulate) very simple, given a stl and 2 parameters, are recreated planes, cones, cylinders and primitive surfaces (four-sided nurbs) which then can be shredded, but the planes and cylinders, in my case, are exactly the feature of shaped hole that I would try to "reach"

seeing the iutub video posted in the first messages, (the reconstruction of the tap species) proe manages to create the planes, inserting 3 points, while the cylinders are to be inserted through the knowledge of the diameter.
what swx does in 30 seconds automatically, the user proe must do it in 30 minutes (I don't believe what I wrote myself... )

 

[maxopus]

swept, I tried to do the piece you posted.
with regard to the cylindrical and devading entities there are no particular problems, they are flying.
As for the hexagon with holes in the edges it takes a few minutes to resume the sketch, because in fact it generates it as splines.
however it does not take 30 minutes... but less than 5.
How's the swx thing?
I tried (my brother has it) to pass a scan but just enter a newly complex stl and with a number of triangles absolutely normal for those who do these things the system has serious problems (we also say that it crashes) and we talk about a 64 bit machine 12 gb ram and video card nvidia picture fx 4800 ....

 

[SweptBlend]

Hello, Max
a friend passed by me with a swx 2009, loaded the stl file that I posted, launched the command "recognizer surfaces" that recognizes 4 sides, cones and cylinders, and in 30 seconds I found a series of primitive surfaces ( those sculptured, to throw away, but those "geometric" perfectly "adherent" to the "shaped hole" ).
I harped to pierce with rex, but apart from that to recognize the surface of a hole, you have to know what diameter it is, and know the direction,
(the procedure I tried was:
1) I create 3 reference points on the sl
2) I create the reference plan on points
3) I create a normal plan to this
4) I create a curve ci sketch ( circle) that passes for 1 three points
4a) and creating a point-axis, to verify that sucessive sketches are concentric. .
5) and now I can make the extrusion surface,
if you try to think about the shaped hole in attachment where there are 4/5 diameters,
that you will have to extend and trim. . .
becomes a work of Carthusian, compared above all to the simplicity of that other ... ;-)

I also tried the features reconnaissance plugin, (frt) but it seems that on the sl directly cannot work, so first create static geometry based on the sl, then convert that geoemetra. . .

 

[maxopus]

Hello, Max

I also tried the features reconnaissance plugin, (frt) but it seems that on the sl directly cannot work, so first create static geometry based on the sl, then convert that geoemetra. . .

I'm gonna make a movie, and I'm gonna put it on you.

Here he is.www.aureaservizi.com/archivio/filmati/rex_wf4_02/rex_wf4_02.htmlAs you can see, I took 3 minutes to do it.
If you want to do it better (you will take another 3 minutes) edit the sketch of the hexagonal quarry and do it as you must ... pro/e get a spline.
if the stl is exported correctly (in your case the axis of the laminated hole and rigged was not aligned with the reference plans) you can put us much less exploiting the feature of revolution.
probably in swx they will have integrated good functions at this point of view but, this case that you posted in reality never shows up, because the sl is the product of a scan with all the flaws of the real pieces and therefore it is very difficult to use these automatisms.
reverse is a much more complex process... and there's a serious dismay.

 

[maxopus]

I'm gonna make a movie, and I'm gonna put it on you.

Here he is.www.aureaservizi.com/archivio/filmati/rex_wf4_02/rex_wf4_02.htmlAs you can see, I took 3 minutes to do it.
If you want to do it better (you will take another 3 minutes) edit the sketch of the hexagonal quarry and do it as you must ... pro/e get a spline.
if the stl is exported correctly (in your case the axis of the laminated hole and rigged was not aligned with the reference plans) you can put us much less exploiting the feature of revolution.
probably in swx they will have integrated good functions at this point of view but, this case that you posted in reality never shows up, because the sl is the product of a scan with all the flaws of the real pieces and therefore it is very difficult to use these automatisms.
reverse is a much more complex process... and there's a serious dismay.

I have changed my message, but rightly the discussion does not update.