Put plainly, I ask, who's in charge of the shapes and proportions of the various symbols (ASME)? Perhaps only the typesetters of the 14.5 standard actually know .
I need to recreate them all from scratch. Of course, they're easy to draw accurately enough for any practical purpose, but having...
Hi everybody,
I'm a mechanical engineer trying to wrap my head around choosing a transformer for a new CNC mill coming into our shop. We're a small operation, so I have ownership of all the technical aspects of the purchase, nearly all of which are squarely within my professional experience...
Can anybody summarize the differences between Blodgett's "Design of Weldments" and "Design of Welded Structures"?
Different areas of focus? Depth?
I wouldn't step foot in a building if I designed it. [smile] That's not, and never will be, my area. However, I sometimes need to design small...
Consider a round disk, let's say roughly the shape of a hockey puck. Let's name one flat face as datum feature A. Then, let's give a basic dimension for the thickness and control the other flat face with a profile tolerance.
To make the thought experiment cleaner, just assume that both faces...
The concept of an ALL OVER profile tolerance is easy to understand in cookie cutter examples, but I'm very interested to learn how the forum membership has used and seen this tool in the real world.
From the 2009 standard, 8.3.1.6:
"A profile tolerance may be applied all over the 3 dimensional...
Forgive me if this is a simple matter, but I've been unable to find any examples relating to my question.
Of course, we can control the coplanarity of n surfaces by noting "nX" before a profile FCF; no datums need be referenced. As Y14.5 says, "Each surface must lie between two common parallel...
A customer's part will be milled from extruded bar stock. The profile of the extrusion is governed by a MIL standard. I believe the attached drawing of this profile dates from 1995. I am very interested to hear what some more experienced folks have to say about the GD&T used on this drawing.
In...
Putting this question into words is awkward at best, so please do see the attachment. What is the interpretation of an all-around profile tolerance that controls a part outline where one of the controlled faces is partially represented by a hidden line in the drawing view in which the profile...
I have read that the datums in the the lower segment of a composite profile tolerance must appear in the same order as they appear in the upper segment. While this makes sense, I have also read that the lower segment datums must repeat those in the upper segment without skipping any, meaning...
