In thread1103-514448, at the last post of the thread, I saw this figure posted by Ryan and taken from ISO 1660. It surprised me a lot because I have never seen a diametric tolerance zone for profile of a line applied to a resolved geometry (spine?) of a feature of size (associated with the...
Does this look professional to you?
I'd say that some of the things the interviewed person says make it sound like he is not well-versed on the subject.
The examples he shows from the drawings he works by have some alarming things in them too.
What is your opinion?
"How do you make parts for...
I don’t want to hijack jimbid20’s thread too much, so I’m posting this here.
I’d like to get everyone’s opinion:
Looking at this modified figure from the standard, do you see any issues with B@MMB as secondary and C@RMB as tertiary?
I think there might be a problem because you might not be...
The two most recent versions ('09 and '18) of ASME Y14.5 define a 'datum' as:
With "line" mentioned as a separate kind.
In past discussions such as thread1103-452649 no clear conclusion was reached about what can be the intent behind the addition of "line" to the definition in the '09 edition...
Why is the above rule of not specifying larger tolerance for straightness than for position/orientation applies only to DML straightness @MMC & Position/orientation @MMC, and does not include DML straightness @RFS & Position/orientation @MMC?
I think that if DML straightness @RFS &...
Here is a figure from ASME Y14.5-2018:
And here is the definition of a pattern:
So, if no INDIVIDUALLY was stated near the second segment of the positional tolerance for the small holes, does the 6X near the detail name define a pattern of 6X4=24 holes? Or would your interpretation be that...
In runout examples 7-61, 7-63, and 12-2 of Y14.5-2018, the primary datum feature establishes the axis of rotation and constrains 4 degrees of freedom, thus stopping the relevant rotations and translations to allow the tolerance zone limit the feature. The secondary datum feature is an end face...
Since both the 2009 and 2018 versions of Y14.5 reference Y14.5.1M-1994 while Y14.5.1-2019 is described in the ASME website as "consistent with the principles and practices of ASME Y14.5–2009", who is supposed to be using ASME Y14.5.1-2019, and what for?
Also, what exactly is the "single...
A lot has been said about how a size tolerance with Rule #1 limits the form of a regular feature of size. It is not mentioned in the Y14.5 and related standards or other sources I came by (except a couple of threads in this forum) that, unless it is an oversight, Rule #1 also limits the...
When a datum feature symbol is attached to a callout common to both the hole+counterbore or a pattern of them as in This example or to a hole+countersink or a pattern of them as in this example, is there any rule in ASME Y14.5 or related standards that tells clearly that the datum feature is...
It seems like starting from "Unless geometric tolerances..." (bolded) there is an exception to the exception?
Should I understand that if the drawing has a dimension labeled "STOCK" and there are geometric tolerance anywhere on the same drawing, the tolerances from the standard for the stock...
According to sub-paragraph 7.20.4.4 in ASME Y14.5-2018, datum features of size referenced at MMB can participate in restraining the part (producing a restrained condition). The sub-paragraph refers to figure 7-52, which doesn't include a detailed restraint requirements note (a detailed note is...
ASME Y14.5-2018,
According to 7.16.2 and 7.16.4,
"Where datum feature B departs from
MMB, relative movement (rotation) can occur between the true geometric counterpart for datum feature B and the related AME of datum feature B"
These sub-paragraphs refer to figures 7-31 and 7-33, in which datum...
Considering the tolerance of position for a countersink as shown in this video
Would you interpret the position requirement (when considered for the countersink feature), as applying to the cone axis, or to the center point of the circular element which is controlled for size ø.675-.685?
In this video the speaker says at about 5 minutes mark that simultaneous requirements can only be overridden by a notation such as SEP REQT when at least one of the referenced datum features is not at RMB.
I believe this interpretation is not derived from the Simultaneous Requirement definition...
During a recent discussion that developed in thread1103-501700 , claims were made that at every place where the Translation Modifier is used, the Customized Datum Reference Frame tool can be used instead.
Here is an excerpt of the argumentation:
Other opinions that were expressed suggested...
ASME Y14.5-2018:
"3.18 DATUM FEATURE SIMULATOR
datum feature simulator: the physical boundary used to establish a simulated datum from a specified datum feature.
NOTE: For example, a gage, a fixture element, and digital data (such as machine tables, surface plates, a mandrel, or a mathematical...
What's the right way to call out an ISO 228-1 internal thread of class B tolerance on a drawing?
Is it the same way as a metric thread?
For example, a typical callout for a metric M10 thread is: " M10 X 1.5-6H "
where 1.5 is the pitch and 6H is the tolerance class.
Would it be for Whitworth...
