I have a metal door, just a flat piece with formed edges for rigidity. The prototype had an issue with concave bowing. Concave bowing is not acceptable, but x-amount of convex bowing is ok...I'm not quite sure how to call this out on the drawing. I immediately think of a straightness...
Please take a look at the attached image.
Do the hole centerlines imply that the outer edges are square with the hole pattern? Or do I need a clocking datum (one of the widths) to line everything up correctly?
Thanks!
Please see the attached drawing.
I am using ASME Y14.5-2009, I think the '94 version would have "two surfaces" in place of my "2x", but anyway...
Profile of a surface requires the true profile to be established with basic dimensions. I can't find anything in the standard that overrides this...
When you have a pattern of holes as a datum, do the dimensions for other features come from the centerplane derived from the pattern, or from the center of one of the holes? I've been searching around and I keep finding it done both ways, are both ways really allowed? I believe inspection is...
I have a part drawing that contains 6 sheets.
A pattern of 2 holes is called out as Datum B on Sheet 1.
I need to identify Datum B on the other sheets, but it's not necessary to callout the size of the holes. What is the proper way to do this (if there is a proper way)?
Do I need to callout...
This may be the simplest question ever, but are perpendicularity and/or angularity restricted by size limits?
I'm looking through Section 6 of Y14.5-2009, but it only mentions parallelism as being restricted to limits of size. If parallelism is, then why not perpendicularity?
A question would...
I have a cylinder shaft with a small flat notch on it roughly centered about the length. I am applying a total runout tolerance to the shaft.
In the drawing view, the shaft is layed out horizontally and the notch is shown on the top surface, while the bottom surface is shown as one continuous...
Threaded hole = position .005 RFS
Clearance hole = position .005 MMC
As the clearance hole departs from MMC it gains bonus tolerance. Let's say the size increases, but the fabricator manages to maintain a position within .005.
Is it then assumed that the remaining tolerance is applied to the...
Please read:
thread1103-172988
Assuming the said cutout is sized with basic dimensions:
-Would you locate it, with basic dimensions, to the center of the cutout or to the edges of the cutout? (are both ways allowed?) I ask because it seems if it were located to center, then it could spin...
In an assembly each part should have its own identifying letters for its DRF. i.e. one drawing, or part, has A|B|C, the next drawing has D|E|F, etc... Is there a standard way to deal with double lettered datums after the single letters are all used?
AA|BB|CC?
AA|AB|AC?
AA|BA|CA?
Or is this...
I have a hole that is called out with vertical positioning +-.005 and horizontal positioning +.006,-.001. Is there a way to use a positional tolerance (or any GD&T method) to allow more movement in one horizontal direction than the other? Or does the hole need to be centered in the tolerance...
I have an irregular shaped hole that is basically located and sized with tolerances (similar to the shape of this "0" if the left and right sides were flattened). I want to say it can be positioned with a dia. tolerance of .001 at MMC, but my book says I can only apply a positonal tolerance with...
For practice I am applying GD&T to an assembly that has already been made. The design is filled with extremely tight fits (for example a fixed fastener dia of .112 with a clearance hole dia of .114). The positional tolerances I'm calculating have been from .0005 and up.
What throws me off is...
I am familiar with using the X,Y tolerance range to calculate a diametrical positional tolerance (the square with a circumscribed circle method) using the SQRT(X^2+Y^2) equation.
I have a very simple drawing of a plate with a bunch of holes through it and all dimensions are +-.01. I need to...
Hello, I'm a CAD guy learning GD&T so you may see me on here quite frequently as I run into roadblocks. And yes, my company does have its eyes open for training.
I've searched through past threads and found some information, but some of it seems to contradict what I'm reading in a book...
