i like to dimension like shown in the picture, but i do not want to type this info in.
7/8-14 UNF -2A
if my model changes the note does not.
Only if you use cosmetic thread, I think.
BTW its a tight thread, 0.00008" ?
I would get laughed out of the building if I put a 0.00008" tolerance on a drawing.
I'm assuming a typo.
And that's runout on the thread.
That's some really important screwing
But the thread class is 2A
Looks like a SAE O-ring boss.
Frederick Law wrote: And that's runout on the thread.That's some really important screwing But the thread class is 2A Looks like a SAE O-ring boss.
Frederick Law wrote:
Guys from floor (super precision tooling) already screamed for 0.0001" but I never tried 0.00008" ?
and How you inspect 0.00008"
Andy Sanders wrote: I would get laughed out of the building if I put a 0.00008" tolerance on a drawing.I'm assuming a typo.
Andy Sanders wrote:
Its in millimeters...… ….just kidding...
Although I am not sure how you would check runout on a thread anyway. The whole idea of runout is to check individual 2D circular segments. If you were to take a 2D cross section of that thread (perpendicular to the axis), you would have some VERY large variation on the outside surface just due to the fact that it is a thread (Major diameter vs. minor diameter).
Pretty sure that runout + threads = impossible if not impractical.
Runout to threads. Possible?? - Drafting Standards, GD&T & Tolerance Analysis - Eng-Tips
You can add a thread callout in cosmetic thread, but not grading (coarse or fine)
Adjust your thread settings so the thread starts past the part's end by at least a turn, unlike the green section below:
Something like this:
Since a thread doesn't respond to a hole callout, this can't be changed in calloutformat.txt or in the Dim text box.
And since the thread data isn't too exposed in equations, I suggest you add the thread and class data as a part property and link it in the drawing.
You still have to maintain the data, but if you're in the part changing this end of the model, the workflow will have to be to also modify this property.
i will link this to file part property.
George Polywka wrote: thanks kevin,i will link this to file part property.thank you
George Polywka wrote:
You're quite welcome.
Now, to actually answer the OP's question:
If you use an external cosmetic thread instead of modeling the thread (or instead of using the built-in thread modeling thing):
When you use the cosmetic thread option, there is a thread callout area at the bottom:
Then, when you bring it to the drawing level:
This not is parametric, so it will update (I think). However, I do not know how to customize it so it says what you want.
I just usually start a note and type in what I need. Sometimes I've dimensioned it like a diameter and added text as needed
I'm sure the runout tolerance is a typo, but whether it is or not, remember the thread class drives the thread's form to some extent so it may not make sense to specify a tighter runout on a sloppier thread class.
I’ve done this for threads by using Configuration Specific Properties in a design table with $PRP@xxxxx as column names. Nominal diameter, pitch, designation, and class of fit is usually all you need for both inch UN and metric M threads on the same part file.
Configuration Specific Properties also works well for bearing names/part numbers and other types of designations. On the drawing, insert annotation – note - link to property - then select properties to make a text string. After a one-time setup, the designation string will update reliably whenever the drawing view configuration is changed to a different configuration.
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