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Tap drill sizes

Tap drill sizes

Tap drill sizes

(OP)
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

RE: Tap drill sizes

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
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

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