curve

[alkokabani]

Hello Everyone,


I was wondering if anyone could help me please. I am attempting to create sping like curve. I used top datum to plot 4 points then created new datums to creat the rest of the points to be used creating a curve (spring like curve). I have different distances between each datum thus it is no a perfectly spaced out spring. The problem I am having is that I can't seem to creat a perfect cirle of the spring as you can see by checking out the attached file from the top view.





Thank you in advanced for any input/comments/help.


Cheers!

 

[Zestje]

You ate trying to do this too complicated. Have a look at these tutorials, they will help a lot!

http://www.e-cognition.net/pages/Helicals.html

http://www.e-cognition.net/pages/DatumGraph.html

 

[jraquet]

You can use a variable section helical sweep if the section stays the same and it is a round profile/path at each section.


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[alkokabani]

Thanks Zestje,


I did check out Leo's tutorial and I am a big fan of his work and tutorials. I don't know how to use the graph to have 3 diferent distances between each rotation. Leo's tutorial covers how to use the graph to make the ends of the spring do what I need, but there is also one other rotation in the middle that I am trying to make. I did solve the problem though using the hard way. I used a circle as a reference along withdatums ploting 8 dots instead of 4.I totally agree with you, it is not the most efficient way of doing it but I got what I needed.Thanks again!





Cheers!

 

[jraquet]

Actually,


You might want to check out Leo's pointers on datum graphs...


http://www.e-cognition.net/pages/DatumGraph.html


He also discusses a formula to match the graph with an equation for the helix and use a VSS.


The helical is pretty much a manual method (old, old, old) with more abstract and limited controls. I like to use the newer tools (they have icons) but still don't know how to use them well and fall back to my old habits.

 

[jraquet]

If I would have read...


Zestje has it right, just ignore what I said.


Thank you Zestje.

 

[alkokabani]

Thanks Jeff!