So a little update on this. We had previously spec'ed and built smaller vessels without considering loading of internals. This was done for decades with no issue, so I'm not going to try to rock that boat. The latest vessel is much larger, which is where my concern comes in. That being said, I...
Hmm, I suspect I wasn't very clear. We are placing steel tooling that is roughly the full water weight that the vessel will hold. That load is sitting on a ring resting against the head of the vessel. As the load ring is not perfectly matched to the vessel, there are also stress concentrations...
I work with several large pressure vessels. In operation, the vessel lids are removed and heavy tooling/materials are placed into the vessels (similar to a composite autoclave). I am not a pressure vessel engineer, but I am very concerned that the stresses applied by the tooling are not being...
So I didn't feel great about this solution. I don't like the idea of controlling directional tolerance based on an implied angle that a dimension is aligned with that doesn't actually call out an angle in some way.
I had a chance to sleep on it.
What about combining position, angularity, and...
That was something I was thinking about, but it didn't feel right, which is why I went down the path of multiple single segment controls.
Is this what you mean or have I misinterpreted what you wrote?
As always, thank you 3DDave, you've been very consistently...
I am seeking to angle a tolerance zone for a hole and extend it in that angled direction. For my purposes, the angular requirement is fairly tight, while the length requirement, not so much. The hole is being mated to a slot with a dowel pin. This is not my desired choice of frame, but it must...
Thank you 3DDave. This makes good sense. For the slots I as making, I ended up using a max material condition callout with different size tolerances on the width and length and this seemed an appropriate path forward. Seemingly, the bonus tolerance would only get applied in the direction of the...
I read this article by Bill Tandler and thought it was very interesting, but I wasn't satisfied with the solution.
https://go.gale.com/ps/i.do?p=AONE&u=googlescholar&id=GALE|A328422062&v=2.1&it=r&sid=AONE&asid=fb82bcc4
With a linear slot that is aligned with the datum reference frame, would it...
Thanks for your reply! To my knowledge (limited) a perpendicularity control is equivalent to a position control with a perpendicular datum. This is what I was shooting for with the second line of my fcf. Is this the case or am I mistaken?
It seems that using a perpendicularity control alone...
I am trying to get a series of holes put into a plate. The holes themselves must be reasonably perpendicular to the surface to allow for adequate bolting as they are threaded holes. The translational positions on the plate are not critical and they are not related to each other in any way. I...
This is a test specimen. It is intended to be symmetric to produce good test results. Adding features is adverse to that goal. I suppose a superficial mark (paint/ink) would satisfy without violating the intent of the part.
Thank you.
@CTopher, I think you misinterpreted the question. A could...
I'm working through something funny. I've got a long extruded rectangular (slightly off square) prism that is symmetric in X/Y/Z. I primarily care about the rectangular ends being perpendicular to the long sides and parallel to each other as these are measurement locations. I utilized two of the...
