publication geometry

[Paolo118]

Good morning, you ask me to do something, but I, as a catholic, have a problem.. .

it tells me to create a product containing more parts: one containing only sketches and others with surfaces or solids, connected to the first.
In practice, I am told to create geometry in the first, publish it (and so far I may have done it, but I also return this step so I see if I did it right), to return to the axieme and to "activate part 2; to perform a copy geometry of the public geometry of part 1". .

Huh? ? ?

I can't do that. .

the purpose should then be to change the various parts by going only to change the geometry in part 1.

but 'this copy geometry I just don't find it...

Help!

 

[gianni55]

create geometry in the first, publish it (and so far maybe I did it, but send me back this step so I see if I did it right)

select geometry, from property the name changes by placing one that has a logical call (not sketch.1 but for example punzone internal profile, external profile, exhaust etc.) then from the menu/instruments/public elements publish it.

to return to the axieme and to "activate part 2; perform a copy geometry of the public geometry of part 1". .

activate the catpart where you want to copy geometry
selections (from the tree public elements), the published geometry of the other catpart
menu/modification/copy
menu/modification/special glue/ as result with connection

If you want to work in contextual mode always, you have to change the settings, but if you are at first I don't recommend it.

Let me know.

Hi.

years ago

 

[Paolo118]

Now I try, then I tell you!

Thank you, Paolo

 

[Paolo118]

It seems to work, thank you.

a skewered domandina already that there are... why if in the sketch design a construction line, out of the sketch do not see it? Is there no way to make it visible?

 

[gianni55]

construction line (or a single profile) can make it visible (and usable) in the emission feature mode:
geometry selection, dx key, object (object name), emission feature

multiple profiles designed in a sketch can make them visible (and usable) in the feature profile mode (differing them by color)
in the sketch toolbar, feature profile (icon close to semaphore)

Hi.

 

[aligil]

As I am also in the phase of "cultural growth" on catia v5 I thank already years for the exhausting explanations and in the morning I will try.
I was used to the top-down approach with the pro/engineer skeletons and I was looking for similar modalities in caia.

 

[Paolo118]

Great!

Thank you.

 

[Luc@]

hello to all, I repeat the discussion because I am also interested in the topic but I have not understood what it is materially to create a public geometry.

I am asked to create a product within which to insert 3 parts, one of which (e.g. prt1) will contain all references (axes, plans, points, curves, surfaces) that will serve to build the product components, with default positioning. then I am told to create a reference within the newly cited part and perform a public geometry of the above reference always within the usual part.

return together and activate (e.g.) prt2, perform a copy geometry of the public geometry of prt1 and create a feature starting from the references of the cg.

Huh? ? ?

I have no idea what public geometry is and where it fits/activates. Is that the same problem as paolo118?
Moreover, in order to realize the prt2, I have to copy within it all the public geometry that is inside prt1, including that part of geometry that will serve me to realize prt3?

to finish, explain to me why this procedure is necessary? why do you do a part only for geometries without any solids, and solids do themselves in separate parts by copying references, geometries etc? Why should not do every part with its own geometries and solids?


Thank you very much for your help.

 

[gianni55]

Hello, luca.

1) the online guide says: the publication of geometric elements is the process that makes available to different users geometric features. this operation is useful when working in the context of assembly design

2) or, instead of looking for that particular feature that can be reused within a tree that is often very long, the user makes it public so that it is immediately visible and reusable.
simply when you draw a part, go to public menus/instruments/elements and then select the feature you want to publish and you will see the published item appear at the bottom of the tree.

3) if you want to reuse the feature selections from the tree the public element, copy it and then in the new part menu/modification/paste special/as result with connection

4) from that moment, the changes you make to the published feature will be transposed from all the parts where you reused it.

5) returning to your problem, in part2 you have to copy only the features you need in part2, while in part3, only those that serve for part3 etc.

6) this process is used when in the design of a product, different geometries are common or should be reused for the various buildings, in this way it is sufficient to modify the geometry of part1 (usually called skeleton or skeleton) to obtain the same modification on all connected geometries.

7) if you tell us what you need to design, perhaps it is easier to explain how it works.

Let me know.

 

[Luc@]

gianni, first of all thank you very much for quick answer, unfortunately I have never used catia so "professional" and therefore all you are telling me is new.

passing to what I have to design: I take back what I was asked to do, it is a simple biella, if it were that, in fact, I have to use all the functions I asked for info, here:

1. the biella consists of two parts, upper and lower. the division is in the middle of the seat for the tree to elbows.
2. creation together with biella.asm name
3. creation within the axieme of a part called biella_skel.prt (this part will contain all references (axis, plans, points, curves, surfaces) that will serve to build the components of the biella) with default positioning
4. creation of a part named biella_sup.prt (it will contain the solid of the upper part of the biella) with positioning on the internal reference system to biella_skel
5. open biella_skel and create a reference (eg: scketchare a curve that defines the circle of the spindle seat and the semicircle of the seat for tree to elbows)
6. perform a public geometry (pg) of the above reference always in biella_skel (pg must always be at the bottom of the model tree): on the surface pane only the surfaces can be inserted, in chains only the curves, in references only axes, planes, points
7. the procedure of points 4 – 6 is repeated for each reference we add. you can also make a pg only for multiple references, as long as they are inherent in the same feature and/or processing
8. back together and activate the biella_sup; perform a copy geometry (cg) of the biella_skel pg. the cg will be created inside biella_sup (note: at each pg corresponds one cg)
9. open biella_sup and create a feature from the references of the cg (e.g. build an extrusion that has as a section the cg circles). the feature will have to be surface (possibly select the closed end option if necessary).
10. repeat procedure 4-8 to create all the necessary features.
11. When there are two surface features that intersect, you can perform a joint feature, which will make the two surfaces a unique surface and will cut on the intersection line the excess surface (the side to be eliminated we must define it). for the good outcome of the unit it is always good to make surfaces that never end accurate on the intersection (sometimes the software fails to join in these circumstances) but always go beyond; the excess will be removed with the unit.
12. fittings and bevels and always good to make them on the surface feature before performing the unit to prevent the latter from depending on them; it is also true that fittings/smuses on the intersection lines of the joins can be done only after the unification
13. in the end we will have to have a number of surface features with fittings, bevels, etc., various merge depending on the need that will lead to having as a result our upper part of the biella that however if dissected will be empty (it is made of only surfaces). only at this point will the solidification function, which fills the closed surface we have created: you run the solidification command, you select the last joining of the model tree and you press it. Now the part is a solid
14. all the above steps are carried out also for the lower part. In the end, we will have: 1 skeleton (biella_skel) and 2 solid parts (biella_sup and biella_inf) containing the upper and lower part of the biella respectively. if we want to change something about geometry we do it on biella_skel: In fact, by means of the pg and cg the changes affect the solids.

thanks endless in advance

 

[gianni55]

I understand. . .

in reality it is not even explained badly... certainly if you never did it can be problematic.

I will be out of the house for several days and without the pc front help you step by step I can not, so I give you some suggestions

I would do like this:

01) creates the biella as you know how to do, that is a modeled upper part and then a lower part, following the indications without using the publications (i.e. create a sketch for the hole of the spine, one for the semicircle of the seat etc.)

02) When you're done, you'll easily realize what sketches are in common and you've done and done.

03) departed from headcreating the part biella_skel where you make sketches (one time) publish them as I told you

04) create the biella_sup incolli with connection the sketch you need and perform the features

05) ... ...

06) create the product Biella.asm and put everything in it

07 do some odds change tests to see if it works

Let me know.

 

[Luc@]

Thanks a thousand years, I'll do some evidence and I'll let you know... whether I went crazy or whether it went well...

Thank you, soon

 

[Luc@]

I would do like this:

03) departed from headcreating the part biella_skel where you make sketches (one time) publish them as I told you

04) create the biella_sup incolli with connection the sketch you need and perform the features

Hello again, I ask you a couple of clarifications about the two points mentioned by your explanation:

- inside biella_skel I insert only sketches, points, axes etc.. from which to obtain biella sup and inf? I explain better, inside biella skel I insert only the sketches in geometrical set, but obviously I do nothing else, no processing of any kind, nor solid modeling of surfaces, correct?

- from what you read in the description of the work that I was asked, if I did not understand badly, inside biella skel I have to make a public geometry for every type of geometry, that is a public geometry for sketches, one for axes, one for points and so on... confirm?

- always reading the instructions on previous page I understand that, once you create public geometries in biella skel, I carry out the as result copy within biella sup and inf of the geometries that I need and, only at this point I begin to draw the surfaces that make up the two parts of the biella, right? in poor words, the surfaces (and their consequent solidification) the design within the sup and inf biella, no?

Thank you very much

 

[gianni55]

Hi.

01) definitely do the sketches of the points, axes, planes, curves etc., while regarding the surfaces, you have to do them if they are in common and this can be understood by the design you have in front (without seeing it I can not respond correctly), however in principle no surfaces and solids

02) confirms, but you must publish only that that you need to reuse and not all intermediate constructions (that's why I suggested you build the parts first, as you know how to do, otherwise the difficulty of building the parts, add that you understand which geometries are in common, how to use publications more within a product etc.)

03) yes, probably, from the description it seems so (although a biella usually comes from the features of solids without using the surfaces, moreover in the description the indication to use the uniform to trim two longer surfaces, is inaccurate, you must use the wreck)