Straight thread on conical surface?

[ankarl]

Somewhere in WF3 or 4 PTC changed the behavoiur of cosmetic threads.
If modeled on a conical surface the thread becomes conical. Before it wasnt possible to apply a conical thread by using cosmetic thread so I guess this is an improvement.
View attachment 5636


However, now I want to put a straight thread on a conical surface but cant figure out how to change it.


Anybody that knows?

 

[kenppy]

I've shown this on an external surface with a bit of a cheat but it might do.



2012-05-02_092550_prt0001.prt.zip

 

[ankarl]

Thanks, not that often I need this so a "cheat" would be ok.


Its interesting though, make a straight hole and put a thread in it and then make the hole conic.If youthen edit definintion on the thread pro/e will ask if you want to keep a straight thread or convert it to conical.You should have the optionto do it both ways.

 

[Hanumanth217]

Dear ankarl,


Here a small trick i used. pls hav look on the attached model.





Hanu


2012-09-03_131002_conical-cylinder.prt.zip

 

[ankarl]

Good point on how to use the remoe tool to hide construction features


thanks
/Anders

 

[Hanumanth217]

select surface to be removed. then goto edit>remove>done





hanu

 

[Roger]

You have peaked my curiosity. Why wouldyou need a tapered hole to have a straight thread?

 

[ankarl]

Die-cast cavity, need straight thread but without additional machining

 

[Roger]

I see. Then, you are talking about a minimum drafttaper in the hole. Let the computer do what it wants as to the cosmetic thread. Call out what you want for the tap size. Done.