Hey folks, I read most of the strings that cycle thru this user group but I do not often comment. For some reason this one caught my eye. Even though Evan ...
Jaime is absolutely right, the rocking or wobble on a planar datum feature is less well known form of datum reference frame mobility. The standard allows the...
I'm glad to see that we have answered every GD&T question there is. It's been three weeks since that last comment was posted. LOL I thought I would just see if...
I took an "Advanced Concepts of GD&T" class at ETI and learned that composite profiles can only contain 2 segments (upper and lower). This is stated as rule #1...
You can have as many as you need to control the surface. The next revision of the standard will have examples of a three tiered composite profile tolerance. ...
I"m not an expert, but if it really makes sense I don't let the standard stop me from doing something just because it looks unconventional. The standard can't...
Hello Folks, As I stated before, I follow the activities in this forum but rarely comment unless something really grabs my attention, and this one did. As you...
I've been asked to look into ASME Y14.5M training with an emphasis on a pretty direct interpretation of the Y14.5 standard and an emphasis on ISO style...
I think that if you wanted to really parse the wording in the standard you could make an argument that the standard does not allow more than two tiers (ie it...
Dear Friends; Please tell me what the best tolerance is for this transfer washer. The thickness is 1 mm. the concentricity is difficult to measure. Now we...
Are you looking for the Y14.5 definition of concentricty? or are you looking more for a position and what the other standards consider concentricty. .025MM is...
Applying a position tolerance would probably be the most common method of controlling a co-axial relationship, but profile and runout are also tools that can...
pointing something out of context is that OD has -ve tolerance which is correct but ID should have +ve keeping assembly in view, if i am not wrong. ... From:...
I'm all for extending the concept of composite FCF's to allow 3 (or more) tiers where necessary to express function. That said, I'm curious about the details...
New to this group, did a search on messages and didn't find what I'm looking for, and haven't seen that the standard really addresses this? Here's the...
I have a customer who has on two different prints put a flatness callout on a face of a round part. The callout is "Flat .007 Radially". Anyone ever heard of...
Welcome to the forum Kevin. The conventional method for reporting a Position tolerance value when bonus tolerance is involved is to add the bonus to the value...
Neither have I, and I have seen some unique use of GDandT. I would contact your customer immediately and find out what they want. Be sure they send it in...
Capabilities can be difficult, especially if you are using a CMM and which software you are using. I only know Zeiss's Calypso so that is all I can comment on....
Thank you all for the prompt replies... I can see this is going to be a great group to be part of. We are using PC-DMIS on a B&S CMM. The lead programmer...
Just curious, does the PC-DMIS software allow you to turn on MMC and look at the feature size and now to compensate for the MMC condition? ... From: knt3424...
Yes it does. It will show "X" and "Y" deviations, feature size, and bonus applied. HTH Aaron ... and look at the feature size and now to compensate for the MMC...
If that is the case, than I would always allow the MMC on a feature for both a capability study and for manufacturing info, while leaving the MMC condition on...
knt3424, As Evan says, there is an effort to among the volunteers authoring national standards to address how measurement results of dimensional results are...
Hi Kevin! I think it is odd that a customer would ask for a capability study without supplying a method. Most likely they don't have a method, but do have a...
