symbolic thread use in a part family
symbolic thread use in a part family
(OP)
I'm creating a socket head cap screw part family, pretty straightforward and simple. I am using a symbolic thread parameter in my spreadsheet (minor dia). I'm doing that in order to get the minor diameter to display in the drawing. However, I am getting a verify failure because of the shaft diameter parameter from the symbolic thread interface. No matter what I try I get errors, either "major diameter must be greater than the minor diameter" or "must be between major and minor diameters (this depends on how I define the shaft diameter in my expressions).
Anyone have any suggestions?
Thanks,
Al
Anyone have any suggestions?
Thanks,
Al





RE: symbolic thread use in a part family
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.
RE: symbolic thread use in a part family
Define all symbolic thread parameters as expressions in your table (THREAD_MAJOR_DIA, THREAD_MINOR_DIA, THREAD_ANGLE, THREAD_PITCH).On a screw/bolt (with external threading), drive the "Shaft Size" parameter with THREAD_MAJOR_DIA ( OR whatever expression that was used to drive the diameter of the shank in your original sketch). On an internal thread, on the inside cylinder of a nut for instance, do just the opposite. Drive major, minor, pitch, angle accordingly and this time, set the "Tapped Drill Size" parameter equal to THREAD_MINOR_DIA.
Daniel Flora
RE: symbolic thread use in a part family
Daniel,
That worked perfectly, once I matched the major dia of the symbolic thread to the major dia of my sketch everything was fine. I missed that when I was creating the part family, thanks!
Now I didn't add pitch diamter into my spreadsheet because I am using a schematic thread and I don't see anyway to switch it to detailed. Am I correct in assuming that unless you are doing a detailed thread the pitch diameter value doesn't impact the model at all?
Thanks,
Al
Design Drafter
Alliant Techsystems
RE: symbolic thread use in a part family
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.
RE: symbolic thread use in a part family
-Daniel