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MarcROBERT1-Visitor
1-Visitor
December 30, 2013
Question

Shift surface problem

  • December 30, 2013
  • 4 replies
  • 9111 views

Hi Everyone,

 

 

My name is Marc, I'm a french technician (English is not my native langage sorry if I make mistake)

 

 

I need your help, because I would like to create a lower offset 10.2 mm from my upper "skin".

 

I created the shift of the surface without difficulty, but I can not properly shift the "holes".

I get discontinuities and overlaps.

 

photo+%283%29.JPG

 

Please find enclosed my ".asm"

 

PS : I havent create the brace/spacer.

 

Thank for your help.

 

Marc

4 replies

N
neomechanikos1-Visitor
1-Visitor
December 30, 2013

From what I see, the original surface is problematic, full of gaps, overlaps, etc. It will be difficult to get a clean offset from this without some import surface doctoring and repair. I assume you are working from the same imported geometry?

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MarcROBERT1-VisitorAuthor
1-Visitor
January 1, 2014

Eric,

Yes, I'm working from the same imported geometry.

Perhaps it would be easier if I create a shift only the skin and create a hole for the lower skin.

To shift the skin, I have no problem, but I do not know how to draw like the original hole.

Regards

Marc

T
TomD.inPDX17-Peridot
17-Peridot
December 31, 2013

Welcome to the forum, Marc.

Your surface features are probably easy enough to create. You can probably use the import model as a guide where you can make sections generate datum curves for use in a revolve sketch for the upper skin. Then you can offset this skin for the lower skin. Then add the remaining features to complete an enclosed quilt (merge the surfaces) and then you can solidify it. Maybe a little bit more work than you anticipated but it will make for a more robust model. If you can break all the references to the import model, all the better.

I didn't look at your model since I don't use RAR compression.

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MarcROBERT1-VisitorAuthor
1-Visitor
January 1, 2014

Antonius,

Thank you for the detailed answer, but with my medium english and Creo level, can you give me more information ?

Do you mean I have to create the skin shift first and then create the hole ? (Because I can create the shape I want for the lower hole)

By "If you can break all the references to the import model, all the better."

Do you mean it's better to brake all the references to create the lower skin (and hole) ?

How can I send you my model ?

Regards

Marc

T
TomD.inPDX17-Peridot
17-Peridot
January 1, 2014

It is highly likely that you can make the solid part directly with some additional features like the hole as a separate feature. Some operations are easier to do with surfacing but for what you are making, I don't think this is necessary.

I prefer to not have dependencies to external models or even the imported file reference. By dependency, I mean that the import model is used as an association in a subsequent sketch. It really depends on how closely you have to follow the original part and there is no other way to make an exact duplicate.

If you use a ZIP compression (without RAR) I can probably open it if it is a full version of any Pro-E file and the import file is included.

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MarcROBERT1-VisitorAuthor
1-Visitor
January 1, 2014

First of all I wish you a happy new year !

Thank you for your quick responses, with the holiday season I could not answer you earlier.

T
TomD.inPDX17-Peridot
17-Peridot
January 2, 2014

Marc, I was able to get your model. You cannot put holes in surfaces so you have to use the extrude feature with the remove material option. I also see a missing bottom in one of the 3 recesses. You can fill that with a "fill" feature and then use the Merge feature to join the fill feature to your import feature.

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MarcROBERT1-VisitorAuthor
1-Visitor
January 3, 2014

Antonius,

Thanks again for your quick and complete answer.

I'll will try to follow your advices to draw this afternoon.

I understand what you say, but (as a Creo rookie) I'm not sure of wich function I have to use on Creo to do it.

For example I don't know where I can find the "remove material option". (but google is my friend)

Maybe it's ask too much, but can you draw something on my model, it will be easier for me to translate the function.

PS : I don't know if you received my answer on 2 janv. 2014 13:41, because it's still been moderating.

Regards

Marc

M
MarcROBERT1-VisitorAuthor
1-Visitor
January 5, 2014

Hello,

I have put two pictures to try to explain you what I like to do.

I think I'm missing the method to draw the hole of the lower skin. Can you help me to draw this hole ? ( I don't need to get the same dimension than the upper skin, but just something who looks like).

http://communities.ptc.com/photoAlbums/1705

The wall thickness and the sidewalls of the cone is 2 mm. (the real thickness will not be constant as it is a thermoplastic)

Regards

Marc

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