Couple of questions:
1.) If drawing shows ASME Y14.100 only, should I understand that rule#1 is enforced? Or only if ASME Y14.5 invoked directly (shown on the face of the drawing) implies envelope principle being in charge?
2.) How to interpret what tolerances are applicable to the dimensions...
ISO 16792:2021 it is for MBD, but my question is not really related with it even it is invoked in the TDP (Technical Data Package).
1. If a pattern has 5 holes and only one hole is detailed, then what is the best way to show that are actually 5 holes?
5x under the detailed view or 5x for the...
Do you think movable datum target could be used on flexible parts - subject to free state variation?
Or maybe the standard's intent has always been to use it for rigid parts only?
Any examples, books, training materials to support this approach.
When on an ISO drawing that has ISO 8015 already specified, the designer wants to have the envelope requirement enforced, does he need to specify also ISO 14405-1 along with circled E or just circled E is enough somewhere close to ISO 8015 already shown?
So, is ISO 8015 E a valid ISO GPS...
Is it legal according to ISO for those two callouts:
Concentricity 0.1 M R to A
ACS
Or
Concentricity 0.3 M to A(M)
ACS
I know without ACS modifier wouldn't be an issue, but I am not sure about with ACS.
Not sure what the designer wanted, but for now I am questioning the callouts legality.
I am sure the simulators issue has been discussed before but I cannot find the thread: common datum C-D shown in runout section should be expand simultaneous or separately?
Otherwise stated if one simulator reaches its maximum, is the second one keeps expanding or stops expanding?
Based on your individual experience, does anyone know if a gland groove detail should be
defined with GD&T?
All catalogs found online have angles with plus minus (zero degrees to 5 degrees Typ.) for the sides (groove sides) along with the groove depth and groove width.
How would you GDT this...
Is the law of diminishing returns applicable to GD&T? In other words when the usage of GD&T became exessive or when someone become too anal?
Maybe there is an industry specific issue?
Open ideas welcomed.
I read some discussions about self-referencing runout (circular and total) and I'm trying to understand why cylindricity could be considered "equal" to "self- referencing" total runout, but not the same thing could be said about circularity and circular runout.
No practical application. Just...
Does anyone know the equivalent of ISO 13715 in ASME?
If there is no such a document, would you consider an acceptable practice to call out ISO 13715 on an ASME Y14.5 defined drawing?
Otherwise stated, instead of writing lengthy notes to define the edge condition (undercut-passing /...
Inspired by a statement made in a previous discussion and also by some of my misunderstandings of the standard’s intent on dealing with datum features of size called at RMB and also at MMB, I would like to ask the members of this forum how would you consider the datum reference frame shown in...
Q1:
If in fig 4-24, the size of the tolerance zone of datum feature A is changed from zero at MMC to 0.5 RFS (for example), would the new scheme make sense ? I am asking from the fact that now datum feature A is modified at MMC in the position callout for the 8mm hole and RFS for its own...
4.10.3/2009 states:
Depending on the number of planes established by higher precedence datums, secondary and tertiary datum axes may
establish zero, one, or two theoretical planes.
My question is: which figure shows Zero theoretical datum planes (if an example of such is shown)
If not, can...
If the objective is to calculate the minimum distance then why 2.15 maximum is value SHOWN has to do with the correct answer.
As far as I understood the correct answer for minimum distance is: 0.15.
The maximum X distance is 2.85. Then what 2.15 is good for? What is the meaning of 2.15 value?
If straight bolts are going to be used into the holes of a part similar to the one from fig 7-27 (Y14.5-2009) and the thru holes are secondary datum feature ( as per the part function) how to specify in GDT language that the holes (as a pattern) are datum feature?
Lets say Surface C is primary...
Fig 4-48 from Y14.5-2009
I am trying to find the origin of dimensions, origin of measurement or Datum Point 0,0,0 for the part shown in fig 4-48 page 86.
Four datum planes are shown and therefore creates a little bit of confusion on where the origin of dimensions might be.
For reference see...
Does anyone have any idea on how to understand this formula:
H1 +H2 =F1 +F2 +T1 +T2
Trying to get a full picture "where din formula is coming from" and how it is driven from the applicable virtual conditions boundaries.
ASME Y14.5-2009
4.24.12 Secondary Datum Axis
For MMB, the centering method used to establish the datum axis has a set of three equally spaced features set at a fixed radial distance based on the MMB.
Regarding fig 4-53:
Question: Should I understand that if B had been callout at MMB in the...
Why Y14.5-2009 allows datum target dimensions to be either basic or toleranced (±), instead of restricting it to basic only? Are there any advantages of toleranced dimensions on datum target ?
Also, there are no examples of toleranced dimensions, unless I am missing the applicable figure...
