bottom up o top down consigli

[alessio79]

Good morning to all of you I would like to ask you a question that has been assillating me for a long time, I press that I have already searched in the forum and found something in the section of solidworks... where we work packing machines, we talk about 30 meters long machines... to design in inventor it is better to start in the environment together and develop the details already in 3d or in 2d and then to devote to the design in 3d? Unfortunately now we design autocad mechanical therefore in 2d here is why of the question. If there is something that is not clear to you, ask me. Thank you all.

 

[gil]

the logic of invetor prefers work in 3d both from the early stages.

 

[alessio79]

thanks gil clearly so I would not keep good anything done with autocad vidto that I tried to bring inside a geometry but it was all to be bound in sketchy environment obviously. .

 

[bradipo666]

When it matters the autocad sketch in inventor, it counts that you have to put all the constraints (yes, even the hormonal and vertical ones.) and of course all the quotas. If you are drawing directly in inventor, with deductions activated constraints, let's say you are at a good point. summarizing, in 90% of cases, it is best to recreate the sketch from scratch that import it. .

 

[marcof]

thanks gil clearly so I would not keep good anything done with autocad vidto that I tried to bring inside a geometry but it was all to be bound in sketchy environment obviously. .

put your heart in peace: the work done with autocad, to remake the same model on a 3d parametric, it practically does not serve anything. in 3d the 2d sketches that generate the various features are all extremely simple but are bound and are gradually built on the geometry of the previous feature or another part of the same together and have nothing to do with the 2d that serves to represent a three-dimensional object in the classical views.
less amounts of the 2d stupid and first you will make all the historian you need.

 

[ninfh]

when I have to recover old designs on autocad cop and take off on a sketch and then I create a block and the center. it is not the maximum but very often it allows me not to redesign everything

 

[alessio79]

Thanks guys for the tips. It is better to spend something more than time but remake the sketch from 0 in inventor, I will do so.

 

[MauroM]

when I have to recover old designs on autocad cop and take off on a sketch and then I create a block and the center. it is not the maximum but very often it allows me not to redesign everything

It's just a matter of time. so moving the problem forward and/or moving it to some other colleague.
When someone else takes those geometries to change them, they'll have to do what you didn't do in their time.
here from me there are dozens and dozens of archive files made so and practically are unusable.

 

[marcof]

when I have to recover old designs on autocad cop and take off on a sketch and then I create a block and the center. it is not the maximum but very often it allows me not to redesign everything

then if you have to make substantial changes and of these attacks you have so many becomes practically like walking on a minefield and hoping that it will be okay...

 

[ninfh]

you are fully right, if you talk about components that will/should be modified, creating blocks is only a way to postpone the problem to when there is time to stand behind it, it is a bad solution and would be the case I started to forget it instead of proposing it to others...... being accustomed to having to run the delivery dates by now I get automatco-. -

 

[eugenesis]

the dwg design from autocad you can load it already with the right constraints and if you select the autocad quotas turns it into quota-parameter , you can also load the blocks and turn them into inventor blocks, as well as the geometric constraints of autocad recognize them in inventor;
. Just do it matter instead of open dwg!!

 

[Tarkus]

the dwg design from autocad you can load it already with the right constraints and if you select the autocad quotas turns it into quota-parameter , you can also load the blocks and turn them into inventor blocks, as well as the geometric constraints of autocad recognize them in inventor;
. Just do it matter instead of open dwg!!

all this if you have already bound in autocad.
I wonder how many use the parameterization in autocad...however, if it is not so,it is as already said in this discussion, remake everything from head or however bind the autocad sketch in inventor.. at least you are sure that there will be no unexpected.

 

[eugenesis]

No, even if you didn't use autocad constraints, but you designed precisely with just the osnap,
inventor allows you to activate the flag to recognize the atomatic constraints (horizontal-vertical , tangences etc.)
directly in the import phase.
changes also (compared to copy-paste.. ) that the import is maintained the original coordinates present in autocad,
and you can already convert the measuring units from inches to millimeters; many draw in autocad in thumb drive without
realize it (they do not know the system variables that manage the thing..) and when they make the copy-paste they are screwed!!

However at the end you can always go on the automatic quotation and deflag the quota leaving only the constraints!!

 

[bradipo666]

inventor allows you to activate the flag to recognize the atomatic constraints (horizontal-vertical , tangences etc.)
directly during import

I tried but it doesn't keep the constraints... Can you describe the procedure? ?

 

[eugenesis]

if you correctly draw in autocad (precise drawing = use osnap.. )
when importing into the inventor sketch, in the second import tab (do not open.. )
put the flag for the automatic binding that applies to you inventor we say back, as in the phase
automatic quotation

instead in the automatic quota, (drawing the "quote" flag leaving only constraints) , sometimes you have to repeat the process
(click + times ) to view the number of missing odds that falls from time to time. .

 

[marcof]

No, even if you didn't use autocad constraints, but you designed precisely with just the osnap,
inventor allows you to activate the flag to recognize the atomatic constraints (horizontal-vertical , tangences etc.)
directly in the import phase.
changes also (compared to copy-paste.. ) that the import is maintained the original coordinates present in autocad,
and you can already convert the measuring units from inches to millimeters; many draw in autocad in thumb drive without
realize it (they do not know the system variables that manage the thing..) and when they make the copy-paste they are screwed!!

However at the end you can always go on the automatic quotation and deflag the quota leaving only the constraints!!

What do you do with the complex 2d geometry that is used in a two-dimensional instead of the simple 2d geometry that you must use in a 3d parametric remains for me a mystery.. .
if the geometry in the two-dimensional is simple it is first done to remake it directly in the 3d. if it is complex it wants simplified then it is again first to remake it from scratch in the 3d. the logic of construction of the piece in the 3d is different from its representation "flat" in the 2d.
use the 3d, do you want to give up that carcad brontosaurus or not? :smile:

 

[eugenesis]

calm calm .. if you have certain complex profiles or if the sketch is shared in + workings (so by force of things is + complex
in comparison to a profile for a single processing ..) then can make sense starting from dwg credible ..

 

[bradipo666]

if you correctly draw in autocad (precise drawing = use osnap.. )
when importing into the inventor sketch, in the second import tab (do not open.. )
put the flag for the automatic binding that applies to you inventor we say back, as in the phase
automatic quotation

instead in the automatic quota, (drawing the "quote" flag leaving only constraints) , sometimes you have to repeat the process
(click + times ) to view the number of missing odds that falls from time to time. .

So: I have a dwg design (designed with activated osnap) that I want to import. . .

1: new standard document.ipt
2: I create a new sketch
3: sketch tab => insert acad file
4: select the dwg
5: Endpoint constraints?? applies geometric constraints?

 

[eugenesis]

5: bind final points you are obliged to put them, otherwise you have no coincidence and you would see the open profile not selectable to create
solid but only surface pieces (although in autocad I had created a closed polylinea..) , apply geometric lanes
should be put if you want to bind the sketch (tngenze, concentricity, horizontal etc. )

So moral of the fairy tale: put both flags you mentioned!

 

[Tarkus]

if you correctly draw in autocad (precise drawing = use osnap.. )
when importing into the inventor sketch, in the second import tab (do not open.. )
put the flag for the automatic binding that applies to you inventor we say back, as in the phase
automatic quotation

instead in the automatic quota, (drawing the "quote" flag leaving only constraints) , sometimes you have to repeat the process
(click + times ) to view the number of missing odds that falls from time to time. .

bho,
provided that design in autocad always with object snaps, to me it does not work, or better it works in part
- made a rectangle
-made a line from end of a line to the mid of another line of the rectangle
-made some circles from up int of the 4 lines of the rectangle
amount in inventor with import options constraints as you first described: It doesn't work,
to make it work, I have to draw the line to bind and the circles in neutral positions, then place them with "muovi" and with the osnap in the desired positions.
doing something more works.
I remain of my idea:
autocad sketch you print it and look at it while you do it in inventor