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That is just a helical cut on the inside. Do you need a screen
shot? One of the instructors here and a student got stuck doing a mating bolt and nut where they both share the same pitch threads combo and be modifiable so they both updated easy and evenly. Two parts and same threads and they bet me I could not do it in under five minutes. They bet each other not me. One that I could not do it in under five minutes and the other ... well you know.
If I had 45 more seconds I would have got a tolerance between the two parts. Solution in the morning?
A screen shoot would be good. I knew it had something to do with a helical cut but how do I perform this op on a hole that is offset. Not a thread on the inside of a tube
I tried to use the cosmetic thread option and this works but how do I actually show the groves of the thead, like the hole had been tapped. Can I set a pitch and thread depth/ angle using the cosmetic thread option. Does this have something to do with a helical cut on a surface? I cannot figure this option out. Can you show me a picture of what you have using the cosmetic thread option?
First : except when there's a need for close-up pictures of threaded objects it is sheer madness to use helical cutouts.It isslowing down every operation, and keeping a nut and a bolt oriented that the threads don't interfere when you move is an exercise in it's own, especially whena number of parts are used in different combinations (I know because I have been there).
Second : it is the way that ProE has taken to handle thread that is making things difficult. Thread is a separate surface, and that makes it behaving bad. Floating in mid-air in exploded views (is that one solved yet ? ) and getting inside solid parts (making it impossible to use it in rendering). The good solution is to make thread an attribute of the hole (or cilinder) only and to make the cilindrical surface inherit this condition.
Am needing to do an internal 1/4" NPT thread into the end of a shaft with a 7/16" pilot hole. Can you please help explain how to do it with a screen shot or two?
.............The good solution is to make thread an attribute of the hole (or cilinder) only and to make the cilindrical surface inherit this condition............
...attribute of the hole,cilindrical surface inherit this condition..
Sorry Leow when I put you on the wrong foot but that was merely an expression of a "should be" situation which is not present in ProE. They chose to add thread as a separate geometric feature, which is OK to depict thread in drawings but causing problems with visualisation and interference check (to name two). I suppose you could add a thread bitmap as texture to a separate created surface in a threaded hole to get a real looking image but I'm not skilled in Pro-E visualisation (never went further than basics).
There are cases when it is necessary to have the real thread drawn in. In a project I was helping a coworker with we made molded parts with a custom three start thread. We needed to make sure the thread would work for the length so we built a model for mechanism and ran the full length to verify there was no interference. we also made various cross sections.
Of course cosmetic threads help with regeneration when the thread is not critical to be seen.
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