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205 records matched your query of centerline datum. Outputting records 1 to 20.
...I'm trying to reference Datum B which is the centerline of a cylindrical surface originating on a... ... to BUT if the datum feature symbol is on the centerline of the bore then it is incorrect.
John Acosta, GDTP Senior... ... identify the two cross sections as being related to the desired Centerline Datum?
My GD&T books don't... ... by the outside diameters. Call this centerline "Datum Axis A-B".
3) Describe surfaces of this impeller... ...For long slender rolls, according to ASME Y14.5, does the centerline "datum" follow the natural... ... on the drawing of say .001" will be violated by the sag itself unless the centerline datum goes with the shape... ... in many respects, in particularly the use of A-B as a single datum. (Ref ASME Y14.5m 1994 4.5.7.1... ... features to generate a single datum according to the standard (Y14.5m), can only be 2 co-planar or 2... ... and even in the 1973 standard when it was actually legal to attach a Datum symbol to the centerline itself... ... that the centerline belonged to all of them. When identifying a datum in a FCF, it does identify which one. Even... ....
If you have the centerline on the part:
Datum feature A, radius -left side from the centerline... ...), but being shown on the same centerline it's kind of assuming the datum feature C (surface) is parallel... ... do not understand how a FCF can reference the feature positioned to itself in a datum reference block... .... (e.g. datum A is positioned with reference to itself in A-B)
2. I believe the location tolerance... ...It seems there are a lot of problems on the attached print, but I will focus on the datum callout... .... Here is my understanding on the designer’s intent:
The bottom surface is primary datum A
Datum B is a... ...I am fighting with some of my engineers that insist on using a centerline as a datum. I see nothing... ... on that count, yes a centerline can be a datum. However, on a drawing that centerline should never... ...? In the texts you refer to, does it show the datum identifier symbol attached to the drawing centerline... ... that 'physical identification' of the datum features might just be in order.
It would provide maximun latitude... ...I have one dwg which has 3 holes on the plate.
In a dwg, they defined a
datum point A1, A2,A3... ... as the centre point of the hole.
datum B is defined as centre plane of one of the hole
In a feature... ... there is a "datum point" at the intersection of the slot's centerline represented by a 'single vertical... ... is that it is a common error made that the datum identifier is attached to the centerline instead of the feature... ... considered to be both holes and the centerline between them the datum?... ... and need a datum reference to lock it in place. But if it's dimensioned to the edges, then you wouldn't... ...)that mate to eachother via a pin and hole (datum B) and a diamond pin and hole (datum C). Each part... ... and diamond pin press fit into part2. Datum B on each part will mate, and Datum C on each part will mate... ... edge.
Alternately, make the centerline datum A. Dimension and tolerance the left and right edges... ... with not using 1/2 dimensions off a centerline of athe symmetrical datum. They are redundant.
2. Thanks... ... to establish a datum, it must be related to features on a part" - i.e. you can't identify a centerline as a... ... datum, but should show the feature(s) that the centerline is to be gauged from.
The definition of t.p... ....
In the projected view, there is a vertical datum that I'm calling Y. If looking at the top view, I have 2 planner... ... surfaces (LE & TE sides) that are parallel with my datum Y plane. However, the root form itself is rotated... ...) that their implied position is defined as 2.000 from the centerline of datum A?
Also, please feel free to express... ...We have a question of expression/interpretation. In the attached sketch, the primary datum is a... ...As drawoh stated, dimensioning from the centerline of the datum is a logical and appropriate way... ... to approach the problem, provided you DO NOT label the centerline as a datum. This is a very common, but poor... ...? Specifically can I call out datum D (plane representing the centerline of that dimension) and then use... ... that same datum in the control frame for a profile of that same feature?
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