Not necessarily SolidWorks related.
When is the diameter symbol required in the tolerance for true position?
Not necessarily SolidWorks related.
When is the diameter symbol required in the tolerance for true position?
When you want the tolerance zone to be circular and not square.
I'm still scratching my head trying to remember when or if I've ever not used a circular tolerance zone. Can't seem to remember any..
Steve C
Steve Calvert wrote:
I'm still scratching my head trying to remember when or if I've ever not used a circular tolerance zone. Can't seem to remember any..
Steve C
Keyways/slots wouldn't be circular.
Also, if you want to loosen the tolerance in one direction (say, along a slot axis) but keep the other direction "tight" (square to the slot axis), then you can specify different tolerances for each direction.
Kevin
Most of the time but to clarify, if you have something like an edge where the tolerance zone isn't square
Steve C
Yes, that explains why a circular tolerance zone is better than a square one and will allow more parts to pass inspection.
Steve C
My GD&T training manual.
Lets give them some free ad:
Don't think you can buy it.
It's provided by the company that did GD&T training.
You can contact them if you're in Toronto.
Guess I will have to contact them. Thanks!
They may not be in business anymore. Website doesn't work.
And I don't find any copyright note
Dang. Beat me to it!
John M. Eavey came to Wayne more than a decade ago and taught us. I have a book like that and even a smaller version for the pocket. Great stuff to have...
Not sure he's still around but he was very good
Steve C
Hello,
ASME.org has the standard:
Y14.5 - 2018 Dimensioning and Tolerancing
They also have a handbook that elaborates more than the standard (but the standard is the standard):
Geometric Dimensioning and Tolerancing Handbook: Applications, Analysis & Measurement (GDT-HDBK - 2009)
https://www.asme.org/products/books/gdthdbk-geometric-dimensioning-tolerancing
I own both and recommend both.
Kevin
CORRECTION:
I have the 2009 standard, so I can't attest to the 2018 edition:
Yep. I am the ASME holder here. The point of the question was to validate what I knew amongst my peers.
BTW, if you're attending World this year, Thomas Allsup has done several GD&T classes and knows his stuff. He might be willing to part ways with his presentation.
Steve C
My firm isn't interested in SolidWorks. They see it like a tool - and that's it. Unless I pay for it and take a vaca week, never going to happen.
Sorry you won't be joining us in Dallas. I am not presenting a GD&T topic this year but if anyone wants to meet and discuss GD&T, please let me know - I can't guarantee answers but the discussion will be wonderful!
I recommend Al and Scott Neumann for GD&T training. They also have a their textbooks for sale, at GD&T Technical Drawing & Engineering Drafting Courses | TCI GeoTol
Dwight
When you want the tolerance zone to be circular and not square.