How to wrap a curve on cone and make sth like this

[stevethb]

Hello

I`ve got a problem with wraping a curve on cone. I would like to make cone like in the picture and I`m wondering about the best way to do it. Wrap a curve on cone then sweep a circle along guide ( this wraped curve ) and then substract. Could anybody show me how to do it ?.

 

[moog2]

try creating a helix and projecting it onto the cone

 

[hudson888]

You do know that you can define a helix with a variable radius that would match the surface of the cone don't you?

Best Regards

Hudson

www.jamb.com.au

Nil Desperandum illegitimi non carborundum

 

[JohnRBaker]

What version of NX are you using?

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA

http://www.siemens.com/plm

http://www.plmworld.org/museum/

To an Engineer, the glass is twice as big as it needs to be.

 

[mmauldin]

Example of Hudson's comment.

 

[stevethb]

I`m using NX 6.0.2.8

 

[stevethb]

This Example of Hudson's is enough for me but, thanks

 

[stevethb]

I`ve got another question, is it possible to make a "double helix/thread" which could be projected onto cone ?

 

[SiW979]

Here is asimple model of a helix projected onto a cone, you could also add another helix with a differnt start angle to create your douple start. Please excuse the crude model it was done a long time ago.

Best regards

Simon NX4.0.4.2 MP10 - TCEng 9.1.3.6.c - (NX6.0.3.6 MP2 native)

http://www.jcb.com

Life shouldn't be measured by the number of breaths you take, but by the number of times when it's taken away...

 

[stevethb]

I`m trying to model with JCBCad method but there are some problems. How to model it to be regular ( double "thread" ). I want to have two grooves which will be one on the end of guide. Can anybody show me the way to do it ?

 

[stevethb]

Here is an example

 

[hudson888]

I have attached yet another solution differing from the others based I what I think are improvements to the sweep and a simplification of the helix pointing out my earlier meaning.

Looking at earlier sweeps I thought that I would have gone to a little more trouble to define and control the section accurately. The only use I've ever had for such a thing was the threaded nut on the inside of a drill chuck. Somebody might relate to that. I used a similar method in an effort to reproduce an accurate thread form.

The other thing I'd mention is the absence of any projection which came about because I have used a helix with a simple linear radius law taking values from the sketch for the first revolve.

I hope that it is relatively easy to analyse the model and understand my method and the intention behind it.

Best Regards

Hudson

www.jamb.com.au

Nil Desperandum illegitimi non carborundum

 

[hudson888]

stevethb,

If the grooves have a circular section then why not use a tube feature with zero internal radius and save yourself the trouble of dealing with controlling your sweep feature. In your example it looked to be a round section by the sweep had gone horribly wrong!

Best Regards

Hudson

www.jamb.com.au

Nil Desperandum illegitimi non carborundum