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Failed Protrusion on Tricky Sketch

G

glue

New member
Good Day!

I'm stuck with one problem I face, and as I am pretty new to ProE, I would gladly request some of your feedback and comments.

I am trying to create a protrusion which should represent the thickness (1mm) of a solid beam I have done before.
As you can see on the below sketch, this beam is made of a material x, which host a reinforcement tube along 35cm of the inboard edge (circular cut).



The feature highlighted in yellow is the part I am trying to extrude and which represent the thickness of the beam made from material y. Problem is that this thickness interfere with the wingskin as such I need to use the function "edge" in order to select the interference edges.

The extruded part should look like picture below:



However I get the following error message:







Would you have any idea why this protrusion fails?
As you might imagine I was trying to do the same protrusion on the right side of the beam, however there was other error message suggesting that the feature was open, hence could not be finalized...

Thanks in advance for your kind help!


Edited by: glue
 
Hey Glue, looks like the sketch is having trouble in one area. On the upper left corner where you have the inner profile of the wing meeting the beam feature. This looks like the area where you are having the problem.


If you complete the beam as shown in the image by the red line. Then use the inner edge of the wingskin (green arrows)to create a protrusion to cut away the unwanted material.


Its that top left intersection that is probably overlapping somewhere. My moto is keep sketches simple, even if it means having to add 2 more features to an operation, especially when use edges are involved!!


View attachment 3101
 
Thanks mcgowamp, Ill try it right away!

As for the project, it is a hobby, Im trying to make a own-designed UAV.
 
Good stuff, I've designed 4 previous radio controlled aircraft, did them on ProE. And I am starting into another one. A shackelton bomber, of the same outfit that my ole man worked on when he was in the RAF. So if you need any help then don't hesitate to ask.


My details are on my website, only the main page works at the mo as its being updated.
 
Was wondering the method to overcome intersecting section...
Further to the beam thickness protusion problem, as shown below, I have intersecting sections at point A and B.
What should I do create 2 protusions, or is there a more skilled way to do so?

Thanks

 
mcgowanp said:
Good stuff, I've designed 4 previous radio controlled aircraft, did them on ProE. And I am starting into another one. A shackelton bomber, of the same outfit that my ole man worked on when he was in the RAF. So if you need any help then don't hesitate to ask.


My details are on my website, only the main page works at the mo as its being updated.
Click to expand...

Great! are you "just" designing them on ProE or did you manufacture some?
 
Well... I have the same error message...
smiley11.gif


Trouble with the red line you were suggesting is that it is useless as the distance is superior to 1mm so all of the red line will be removed afterwards.
I have tried to place points and constraint them to sit exactly on the intersection of curves and lines. But still...
Now what I have noticed and which I found pretty odd is that when I choose "edge" and select a portion of the spline (portion restrained with the 2 end-points), well it select the entire spline..
 
No I manufactured them for people who I knew, there nice projects to work on.


Can you resend the part to me, but instead just sketch the section that you want instead of putting it in a protrusion and I can have a look at the sketch from there.


Cheers
 
Hey Glue, please find attached the part file.


Your section intersected itself in 2 locations and you will see this from the part file. I not sure if you wanted a cut or protrusion but I did a protrusion. It required 2 features as you did have an intersection.


Anyway have a look at the file and yoyu see straight away what I mean.


Paddy


2007-02-05_100542_wing.prt1.rar
 
Yes It is working when you extrude outside the wing but not the other side!
This feature is supposed to be the thickness of feature named wingbox, 1mm thick except on the top and below surface where the thickness of the wingskin interfere, therefore the tool "edge" to select those boundaries.

Thanks for your help
smiley10.gif



Edited by: glue
 
I'm not entirely sure of your design intentions here glue. I get the feeling that that what your trying to model here should be a seperate part?? Your wing is totally enclosed and these features that your adding are also enclosed within the wing???


Have a look at the part below, the feature is flipped to the other side and runs the length of the Wing box feature.


2007-02-05_113808_wing.prt.rar
 
Well, Im trying to model this wing as close as possible to reality as I would like to perform a mechanica analysis afterwards.
I thought it would be good to model each feature of the wing as one feature, leaving the "removable" items (e.g. the carbon-kevlar tube which goes inside the hole and along 35cm of the span) as independant feature.
Should I do so or should I do multiple features which then would be associated (glued) with each other?
 
mcgowamp, on your last file, you used the sketch to "remove" material whereas I want to add material (extrude thickness).
The extrusion side is the one I was looking after, but you will see that when the icon remove material is unclicked, the 3 error message will appear.

Very sorry if I was unclear
 
Tmay, thanks for that. They are of use!!! I might post up this one if I ever finish it :)


Glue are you sorted with your problem??
Edited by: mcgowanp
 
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