mkcski,
That is what I thought when I first saw this drawing, but I am not the designer, just someone who stumbled upon this trying to understand the GDT/datum structure (and unfortunately the person who made it is no longer here)
To AndrewTT's point, it may help if you had a better...
Thanks AndrewTT!... totally makes sense. I always forget, when in doubt, think of the gage!
I do have 2 follow up questions:
-what indicates on the drawing that the gage pin to check the first FCF has to be adjustable? Is it because there is no MMC on the tolerance?
-the first gage checks the...
Ah.. that's my mistake. Those dimensions should be basic... I left that off when modifying the actual print.
When you say the lower FCF is a refinement, does that mean it is controlling the angle of the hole? Also, i know the lower FCF controls the hole to hole dimension, but is it also...
Came across this print at work and I am a little confused by a two single segment tolerance listed on a hole (I simplified the print and attached). I never really understood single segment tolerancing very well, so this might be an easy question. From the attached sketch, you can see the .250...
Axym,
Great explanation.. I actually understand!
I have 2 follow up questions:
1. if the MMB on datum B was not there, the the datum feature simulator or gage would just have to clamp down on the width of B?
2. With what you have drawn above, the part can shift to try to fit the slot features...
Hi,
I am pretty new to the applications of GDT. I have been reading books and such to learn at my new job, but one thing hard for me to comprehend has been how to use the MMB that follows a datum in a FCF when that datum is a plane or midplane. For example, attached is a more basic...
