Tap drill sizes

[tqqlin]

In NX6, they added the new hole command. Why the heck does NX not recognize the tap drill size, on oldstyle holes when putting in a thread command, the NX6 and over command uses different tap drill sizes.....drives me nuts. For example....when I add a NX threaded hole in NX7.5 M16x2, it uses a tap drill of 14. But if I put a hole in a block of 14mm and add the thread command, it defaults to M15x1, very frustrating. Come on Seimens get it together 1 or the other. Screwed me more than 1 time.
Rob

 

[JohnRBaker]

You're comparing a new more modern, and sophisticated, scheme (Threaded-Holes) to an older approach (adding a symbolic thread to an existing hole). The new functionality is based on selecting an actual standard drill size whereas the older scheme used a simple handbook formula, which if you were to review the content of the thread table ('thd_metric.dat') you would see the disclaimer as shown below:

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
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