OT-standards for modelling threads?

[El Scotthead]

I know this has come up before, but for the life of me, I can't find it.

 

What is the standard for putting threads in a solid model? Is it acceptable to just draw a hole representing the minor diameter of internal threads, as long as the threads are called out on the part print?

 

Reason I'm asking: I have a family of models to make for a new customer. Most of them have (2) to (6) M6 x 1 set screws in them. Currently, the parts are being machined due to low quantities. However, there is a chance that we will build molds for them in 6 or 8 months.

 

Thanx.

scott

 

edit: sorry, Thad...

using X MR1/SP2 mill 3 w/ solids

[HevyMetl]

Minor diameter with threads called out is the standard that we use. Most Solid modelers out there will actually create the hole with a surface representing the major diameter of the thread, and a note calling out the thread to be used with a threading depth. This is much less memory intensive and regenerates easier. HTH

[Guest]

I never model the threads.

 

In MC I use a dotted line on the major/minor Ø

In Solidworks or NX I always just use the representation of the thread.

 

It uses a lot of system resources to medel a thread

[mcpgmr]

I never model the threads and any models we recieve from from our customers don't ever have threads modeled either. Minor diameter with threads called out is the standard that I use also.

[El Scotthead]

Thanks guys. I was leaning towards just a minor dia with thread call out. I'll worry about putting them in(for shrinkage reasons) when and IF we decide to mold them.

 

scott