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cad non parametrici

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ansyolitico

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Hi.
Besides creo direct modelling do other non-parametric mechanical cads exist?
I had a video in which you could see using nx modelling and it looked like I create direct modelling (not to be confused with direct creo, twin-titled direct modelling)

while regarding the freestyle modalita of some cad as creo parametric and solidworks?
 
ansyolitico said:
Hi.
Besides creo direct modelling do other non-parametric mechanical cads exist?
I had a video in which you could see using nx modelling and it looked like I create direct modelling (not to be confused with direct creo, twin-titled direct modelling)

while regarding the freestyle modalita of some cad as creo parametric and solidworks?
Click to expand...
talking about mechanical cads come to mind solid edge in synchronous mode (I think it is similar to nx), and spaceclaim. that then these to well see are all cad parametrici even if not history based.
 
the only non-parametric cad is that of ptc. all others are basic parametric and history based and have direct editing commands to iron geometries.
 
meccanicamg said:
the only non-parametric cad is that of ptc. all others are basic parametric and history based and have direct editing commands to iron geometries.
Click to expand...
Actually, if you take for example solid edge in synchronous mode, it's a parametric cad (you can relate to each other the size of the model) but it's not history based. It's basically like cocreate modeling but with more geometric constraints, which you can insert or not at your choice. space claims should also work this way.
 
the direct modeling in nx was already present since the name of the noug. the commands have gradually updated and have increased number until, with nx6, they introduced the history free mode by calling the match direct modeling - history free mode 'synchronous modeling'. hand-handed SMS commands have become more and more parametric until, it seems from version nx10 or nx11 they have removed the history free mode. so at the moment I can say that nx has 'only' the parametric direct modeling.
 
ansyolitico said:
Hi.
Besides creo direct modelling do other non-parametric mechanical cads exist?
I had a video in which you could see using nx modelling and it looked like I create direct modelling (not to be confused with direct creo, twin-titled direct modelling)

while regarding the freestyle modalita of some cad as creo parametric and solidworks?
Click to expand...
powershape
top
♪

and surely there are other...
 
ceschi1959 said:
the direct modeling in nx was already present since the name of the noug. the commands have gradually updated and have increased number until, with nx6, they introduced the history free mode by calling the match direct modeling - history free mode 'synchronous modeling'. hand-handed SMS commands have become more and more parametric until, it seems from version nx10 or nx11 they have removed the history free mode. so at the moment I can say that nx has 'only' the parametric direct modeling.
Click to expand...
for me nx remains the top... I saw some videos and it's scary... even if in the end the best cad depends on what you have to do..... others I don't know them.. .
 
After a few years, I wanted to ask you, I create direct modelling is still used or is she shooting? Because I've been dealing with different design studies lately, and as soon as I talk to him about the modelling, they immediately tell me it sucks to use a non-parametric cad. I think that in flexibility and speed nobody beats it, then it goes well if I have to make so many pieces or machines equal but with different measurements the parametric does not beat them, but I find enough a casino build and bind a piece or a car in which I change a parameter everything without you slit everything
 
After a few years, I wanted to ask you, I create direct modelling is still used or is she shooting? Because I've been dealing with different design studies lately, and as soon as I talk to him about the modelling, they immediately tell me it sucks to use a non-parametric cad. I think that in flexibility and speed nobody beats it, then it goes well if I have to make so many pieces or machines equal but with different measurements the parametric does not beat them, but I find enough a casino build and bind a piece or a car in which I change a parameter everything without squeezing all
 
after a few years that they used it and were so excited they realized that for the machines they do, a non-parameter makes no sense.
In my opinion only for the design can make sense....if you have to do the things to the tenth and the penny, couplings, see that the mechanics.... there is no history.... parametric by force.
 
because you say you can't verify that the machine is in phase or see the couplings to the cent(even if I don't understand what this last thing means on a cad)
 
I used for several years in parallel both modeling and other parametric sw. I personally prefer parametric sw because I consider them more suitable to the machinery world and beyond, as you have the possibility to operate with complex geometries succeeding to change them easily, and also you have the possibility to do analysis of movements as you must. with modeling this is not possible. I think that with the parametric you have a stricter geometry control and also "rigid", but easier in general, if built with criterion. the flaw of direct modelers is also the fact of not having constraints. some see the constraints as a limit, I consider it a plus. It always depends on what you have to do with it.
 
It's a matter of habit. you can make plants from millions of euros also with modeling.

the big advantage of creo/direct modeling is that it leaves the designer more 'free to think about the project and less to the cad, this is for an easier management of subaxis and single parts, both for the lack of constraints of together and history of the features in the parts. an account is moving a face, an account is going to change a function based on a sketch: mental commitment is quite different. an account is to create a new part by pressing a button and seeing it appear on the template tree, an account is to create a side file, save it on the file system and import it into the assembly you're working on, mental engagement is quite different.
Moreover: the modeling based on constraints and sketches is excellent until you are the creator of the assembly or the part, but those who tried to put their hands on models coming from other designers know that it always takes half an hour to understand how he reasoned the other and consequently to prepare a change, or in extreme cases directly remake everything from head because the model has become an inextricable tangle of such functions.
another modeling advantage compared to other parametric cads I've seen is that it's actually capable of handling huge assemblies when others on the same hardware become a
"user experience" that would blow patience to a saint.

the disadvantage as mentioned is that in hands little experts becomes a clockwork bomb made of interaxes at 149.87 mm or straight angles of 89.98°, which actually puts everything there a day.

then recapitulating: if you are a power user, the parameter is fine. If your company has a technical office of middle-level people, I would think about modeling (which in these cases has the disadvantage of requiring a pdm mandatory, which various solids* usually do not require until the office is small).
 
I don't think I'm a pro designer,
but in 6 years I used modelling I realized that what makes the difference is the method.
If you have a method the error will take it close to zero. But I think this is worth everything.
Then I don't doubt that you are more comfortable for cinematic analysis or constraints make the difference.

Like now that I went to solidworks, I imported a step and has corrupted parts, maybe because I'm still neophyte, but I see it pretty messed up to fix. With modelling, I think I'd do it before. I don't know, for me, each one has pros and cons. a pity that is not widespread. I loved it
 

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