shell molding : difficulty in choosing the divider plane

[LC23]

Hello everyone

I have, together with two other boys, the task of simulating the design of some components.
The axieme is the left rear wheel support of an alpha 147 comprising the hub, to be worked on the mud and the hub support, to be produced by fusion, using the method of the shell molding.
In the annex I have left the piece, do not criticize me, please, the mode of modeling of the same because I did not do it, and I would like to avoid doing it (of course) ... try to make what we have

I've been trying to find solutions for a long time, I can't get my head off.
I can't imagine the model plates, I don't know how to divide the piece, I don't know if you should use inserts.

the first problem is the inclined eyelet that presents subsquadri in almost all the solutions that come to mind.
the second is that the model plates are usually flats and division plans are used, while I think it is appropriate to develop a division surface here but.... how?
The third problem, unfortunately not solved before the first two I believe, is : how can the casting channel and materozze? ? ?

hoping not to look like a scanty fatigue (even because I really can't, from several weeks, figure out how to do it I'm piece)
I ask you directly, can any of you tell me how you usually do such a piece with this technique?


Thank you.

 

[SHIREN]

Hello everyone

I have, together with two other boys, the task of simulating the design of some components.
The axieme is the left rear wheel support of an alpha 147 comprising the hub, to be worked on the mud and the hub support, to be produced by fusion, using the method of the shell molding.
In the annex I have left the piece, do not criticize me, please, the mode of modeling of the same because I did not do it, and I would like to avoid doing it (of course) ... try to make what we have

I've been trying to find solutions for a long time, I can't get my head off.
I can't imagine the model plates, I don't know how to divide the piece, I don't know if you should use inserts.

the first problem is the inclined eyelet that presents subsquadri in almost all the solutions that come to mind.
the second is that the model plates are usually flats and division plans are used, while I think it is appropriate to develop a division surface here but.... how?
The third problem, unfortunately not solved before the first two I believe, is : how can the casting channel and materozze? ? ?

hoping not to look like a scanty fatigue (even because I really can't, from several weeks, figure out how to do it I'm piece)
I ask you directly, can any of you tell me how you usually do such a piece with this technique?


Thank you.

[MENTION=69251]lc23[/MENTION]I've only noticed now that the discussion
I know how you could do it.
I'll coach you first jpeg then let's see a little to solve all the probes.
central soul case is obvious that you have to design all corners of reform
for lateral bushing in plaque or removable insert then we decide
for the type of material and you have to make the calculation
Thank you very much

 

[SHIREN]

[MENTION=69251]lc23[/MENTION]I attach the solution for the sloping bushing
plaque drowning sup-inf
It is obvious that the piece must be redesigned all
based on the silks. proposals

you only lack fusory technology
Thank you very much

 

[LC23]

but if I adopted such a solution?I'm working on these things now.I could solve the subsquadro by providing soul flow on the model plates and get the hole with a cylindrical soul, what do you think?
I'm shaping the underframe surface to try to solve

You think it's a good road?

Thank you very much for your help

 

[SHIREN]

compared to the original mathematical model you have already modified the joint between inclined edge and body
if you have the possibility to change geometries
you have not prob modified everything according to needs

the hole dia. 20 must be done for mechanical removal

 

[LC23]

ah, so you say it's still wrong to think about putting a soul there and getting it by fusion?
Then I shut it down, and I have to put a straightness on it. . .

in the meantime I have modified the model a little and I am continuing to change it,otherwise I do not take away the head

Are you saying that the solution of non-planar model plates is okay?

 

[SHIREN]

ah, so you say it's still wrong to think about putting a soul there and getting it by fusion?
Then I shut it down, and I have to put a straightness on it. . .

in the meantime I have modified the model a little and I am continuing to change it,otherwise I do not take away the head

Are you saying that the solution of non-planar model plates is okay?

the hole is closed
If I follow the first mathematical model the best solution is what I have proposed to you
planar plate with upper and lower drowning

If you can change everything, go according to your idea of sez.

you have to do the calculation if it is applied to the sloping hub

 

[LC23]

All right, so I'll catch you on Thursday.

Thanks again

 

[SHIREN]

All right, so I'll catch you on Thursday.

Thanks again

ok

:36_1_11:

 

[marcof]

I'm working on these things now.
I could solve the subsquadro by providing soul flow on the model plates and get the hole with a cylindrical soul, what do you think?
I'm shaping the underframe surface to try to solve

I don't understand. are you working on the surfaces manually by changing them to create the corners of sform? have you looked at the features related to the molds with which you can find the mold division lines, create the division surfaces, give the corners of disform to the interested parties etc?

Now, even if you have specified not to criticize the modeling modes I can't just do without asking why inexplicable reason you dare to subtract and add material using swx as if it were a contextual cad and especially because you do all sketches designed to the eye. on fifty and passes feature based on sketch there is only one quota! facing a few hundred lines and free arches to wander into space. to change the model with a double click on the odds of the various sketches seemed ugly?
I write this because, if you have to also provide the cad model and the professor knows how to use swx it is easy to print the piece with a 3d printer only for the satisfaction of pulling it behind:smile:
In any case there are some modeling defects caused by the fittings that could annoy a lot of swx if you were to create the division line (and I don't see any other cohort you can do) and maybe they could also bother the simulation software for the calculations related to the true and prory casting.
this for example:

 

[SHIREN]

I don't understand. are you working on the surfaces manually by changing them to create the corners of sform? have you looked at the features related to the molds with which you can find the mold division lines, create the division surfaces, give the corners of disform to the interested parties etc?

Now, even if you have specified not to criticize the modeling modes I can't just do without asking why inexplicable reason you dare to subtract and add material using swx as if it were a contextual cad and especially because you do all sketches designed to the eye. on fifty and passes feature based on sketch there is only one quota! facing a few hundred lines and free arches to wander into space. to change the model with a double click on the odds of the various sketches seemed ugly?
I write this because, if you have to also provide the cad model and the professor knows how to use swx it is easy to print the piece with a 3d printer only for the satisfaction of pulling it behind:smile:
In any case there are some modeling defects caused by the fittings that could annoy a lot of swx if you were to create the division line (and I don't see any other cohort you can do) and maybe they could also bother the simulation software for the calculations related to the true and prory casting.
this for example:View attachment 43821

[MENTION=271]marcof[/MENTION]Hello marcof
It's always nice to read
then
the proposed mathematical model or drafted in this discussion is at a school level
who knows about engineering and industrialization products has other reference parameters
what you just write and underline is a problem that has all the current sw 3d
alive in daily such situations wrapped even absurd
However, it must be assumed that those who chew or act on models to industrialize
should provide an ex novo design to the employee
until there are more or less regular geometries is not a prob
but when you happen complex forms that until they are only aesthetics "was"
but when they have mechanical functions I know pain
to date no sw in the presence of rays and against rays succeeds in changing according to molding criteria

as the discussion and big
I invite you to open a specific discussion
Thank you very much
a hug