Slanting of components even though sketch planes are parallel to axes

[e0544067]

I really don't know where I went wrong here. After trying to ensure no errors in my CAD, which I managed to keep somehow so far, I have ended up with slanted components from extrudes that are supposed to be from planes aligned with the axes. I really don't know how to proceed from here because I want to use this model for simulation and CFD analysis, but I cannot seem to figure out how to correct this small but poignant error! I have tried scouring the internet but I cannot seem to find any useful advice. I have attached the CAD file here for reference.. Please help me out here! (I really, really need this to be proper to help my group in my University design Project..) 

[wersy]

Your file is empty.

[TheCADWhisperer]

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@e0544067 wrote:

I really don't know where I went wrong here.

(I really, really need this to be proper to help my group in my University design Project..) 

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Can you try Exporting the file again and VERIFY that you can then OPEN that exported file before Attaching it here?

Can you ask your instructor for help?

[e0544067]

Hi there, thank you for taking the time to reply to my post, and Im really sorry I didnt realize that the file would be empty, I hope this public link works better instead: https://a360.co/3eKkVHt

[e0544067]

Hi there, thank you for taking the time to review my post, and Im really sorry I didnt realize that the file would be empty, I hope this public link works better instead: https://a360.co/3eKkVHt

[e0544067]

Hi there, thank you for taking the time to review my post, and Im really sorry I didnt realize that the file would be empty, I hope this public link works better instead: https://a360.co/3eKkVHt

[e0544067]

EDIT: the f3d file is empty for some reason, please use this link instead:  https://a360.co/3eKkVHt

[TheCADWhisperer]

Have you Grounded at least one component?

Have you applied appropriate assembly Joints?

Are ALL sketches fully defined? (Or at least all except the tooth splines.)

Can you ask your instructor to join this discussion?

What is the purpose of Position 20 (or any of the Position operations - shouldn't you be using Joints rather than capture position)?

1. Logically there should be at least one component grounded (or with appropriate Joints to the assembly Origin limiting Degrees of Freedom.

2. All sketch elements except for the tooth splines should be fully defined.

3. Use assembly Joints rather than Capture Position.

[jhackney1972]

Looking at your model, which one(s) is(are) Slanted?  The internal components probably are meant to be slanted as that is the way they are designed.

[e0544067]

Hi Sir, Once again, Thank you so much for taking the time to provide feedback and critique to my rather amateurish attempt here. Unfortunately as it stands, I do not have a CAD-proficient instructor, and I am not even a mechanical engineer with any rigorous training in CAD; (I'm a Chemical Engineer Undergraduate in an interdisciplinary programme) I made this design going off of my memory on CAD from a course I took over a year ago at my university (I took this up because no one else in my group has any real experience with CAD in comparison while I at least had a tiny bit from the course), as well as some Youtube videos. I will implement your feedback right now and Let you know the results!

I initially wanted to add joints the last after adding the required ball bearings (from the Mc Master Carr Section) as well as some internal external threading for some of the components. And also, I wanted to add that this design was for something I wanted to 3D print and run a fluid dynamics Analysis on. 

If I may ask, what is the rationale behind generally using joints instead of capture position? 

[e0544067]

Hi Sir, thank you for taking the time to respond to my post! The internal shaft as well as the auger coil 'shaft' are slanted in comparison to the casing which seems perfectly straight. As the shafts are supposed to be straight, this was rather unexpected. From the other kind Sir's reply just now, it might seem to have to do with the lack of joints in my design which I am trying to rectify now. I only wanted to add the joints last to make it easier for me to copy and paste components into new designs in a modular fashion to aid in more efficient future iterations of my design. Is there a more foolproof way for me to do so?

[jhackney1972]

I added assembly Joints the lower sections of your assembly.  The last one I added was a Joint between the ring gear and the case.  I will admit, I have not figured out what you want the gear train to do.  If you activate the Section Analysis, you will see an interference between the ring gear and the external case.  You can drive, the joints I added, by right clicking on the joint name Drive Me to check what I did.

I never found any slanting of components, I did find some off center fits between components which the joints should have corrected.  Also there are some incorrect diameters between components, which is a small matter.   Model is attached.