8 Replies Latest reply on Aug 14, 2018 12:09 PM by Varun Sharma

How to design the top part of this sketch with Swept cut if possible ?

Varun Sharma Aug 9, 2018 8:17 PM

hi guys I have this piece right here that I want to learn how to model in solid works just the top section. I was thinking of extruding the top section and drafting the extruded cylinder then doing some type of swept cut but I dont know how to approach it and quite stuck. Here is the picture of the model and here is a screen shot of my solidworks model part.

Also my second question was in figuring out how to use "hold wizard" and extrude a thread. I wanted the bottom portion to be threaded but for some reason it gives me an error and says I can only cut into the threads not extrude them ?

I am not sure what I am doing wrong to NOT have the threads extruded ? I just made the diameter longer so it matches the outside of the threads but for further use it would help to understand why I cannot extrude?

Re: How to design the top part of this sketch with Swept cut if possible ?

Dave Bear Aug 10, 2018 7:06 AM (in response to Varun Sharma)

Hi Varun,
Some basic concepts need to be accepted by yourself here in regards to how you model and how things are manufactured in real life. With regards to your threads on the bottom half, you need to cut these into the model as threads are cut into material in the real world. I've no doubt that you could indeed extrude threads if you really wanted to, but it is very unconventional.

As for modelling the top part (above the nut/hexagon), this could probably be achieved with a profile sweep along a tapered coil path.

Dave.
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- Re: How to design the top part of this sketch with Swept cut if possible ?
  
  Varun Sharma Aug 10, 2018 12:54 PM (in response to Dave Bear)
  
  Ah ok, i'm still very new to the workplace when it comes to engineering and have zero shop/manufacturing experience, but im slowly getting there. Cut extruding the threads works everytime so I will go with that.
  
  As far as the top part here is an updated drawing where I cut extruded through the inside with a minor draft at the end. Now I am thinking of doing a wrap feature but I cant quite tell how I will be able to get that swirl feature? This piece will be 3D printed so I have freedom in designing it and not worry about if it will be machined properly or not.
  
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  - Re: How to design the top part of this sketch with Swept cut if possible ?
    
    Paul Salvador Aug 10, 2018 1:19 PM (in response to Varun Sharma)
    
    Hello Varun,.. here's a example you can download...
    McMaster-Carr
    
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    - Re: How to design the top part of this sketch with Swept cut if possible ?
      
      Varun Sharma Aug 10, 2018 1:36 PM (in response to Paul Salvador)
      
      hi paul,
      thank you for taking the time to find that part for me. that is basically the type of design I want to learn but when I open this part in Solidworks it shows the parts and features were all imported so I cant quite reverse engineer it?
      
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      - Re: How to design the top part of this sketch with Swept cut if possible ?
        
        Paul Salvador Aug 10, 2018 1:43 PM (in response to Varun Sharma)
        
        Varum,.. sounds like you downloaded a dumb solid (STEP, X_T, IGES),.. there are options to dowload in Save.. choose the SolidWorks format.
        ..otherwise.. here is another..
        flex strain relief | MySolidWorks 3D CAD Models
        
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        Re: How to design the top part of this sketch with Swept cut if possible ?
        
        Varun Sharma Aug 10, 2018 2:30 PM (in response to Paul Salvador)
        
        i double checked and made sure I downloaded the 3d solidworks version but still I could not check out how the drawing was made. It had only the imported features showing on the left. Any idea on how I can get that feature on my solid part? Thank you
        
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Re: How to design the top part of this sketch with Swept cut if possible ?

Varun Sharma Aug 14, 2018 12:03 PM (in response to Varun Sharma)

i got it to work. Thank you guys! I just did extrude draft to the main cylindrical feature than match a helix/spiral feature down the cylinder with the same taper degree.
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Re: How to design the top part of this sketch with Swept cut if possible ?

Varun Sharma Aug 14, 2018 12:09 PM (in response to Varun Sharma)

Could anybody help with me adding an NPT taper type male thread on the bottom part of this feature without having to do all the complex geometry? I was reading using the cosmetic thread feature or the hole wizard thread feature is the best way because I have to make these into shop drawings as well.

any advice on that?
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