huangyhg

tolerance stack up software
are there any free or not "tolerance stack up" tools available on the web?
this would apply to mechanical engineering.
eng-tips forums is member supported.
not free, try
i have never ran across a stackup program that i was happy with. honestly, i find that mathcad or excel are the best at what i need to do. you just have to make sure you set everything up correctly.
i normally use excel when i need to.
we looked at a product called sigmundedge 18 mths or so ago. it was the version of their software that works with solid edge, i believe they have other options for other cad packages. they also had a more complex version that takes statistics & probablities into account. it had some interesting capabilities, i would have like to trial it, but i'm not convinced it was a silver bullet.
the two i have run across are both ug embedded. tolmate and vsa. both now owned by ugs or i guess now since seimens purchased it owned by seimens. in my humble opinion i believe tolmate does a better job of analysis.
scott
there are three main tolerance analysis packages that are worth your time. vis-vsa, cetol, and 3dcs.
i have used both vis-vsa and cetol for many years.
sigmetix, the company behind cetol, has me teaching their basic cetol classes. i been doing 3d tolerance analysis for 17 years, with 8 years at vsa.
tom rhodes, gdtp-s

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