Okay. Last question then (sorry). There is gen. tol. (±0.5mm)on drawing for all Feature of size. Would this stud Diam (Ø6 mm) be considered as Feature of size, as shown in drawing?
Thanks Dave! I guess it makes sense. Another follow-up ques then, if the Stud dia is Ø06±0.5mm and positional tol is 0 at mmc, for gauging, the size of the bush would be 6.5mm on the vertical side and 7.5mm on the horizontal side (because of pg2). Right?
Yes, but they mention STUD in both of these. Not sure, thanks for the help. I am thinking they should have put Perpendicularity for Datum B, but then in the checking fixture it is the same thing since it would be going in a bush.
Hey everyone,
I'm working on a new drawing and came across something confusing.
Datum A is a plane.
Datum B is a stud, which has a positional tolerance on one side (without the Ø symbol).
On the next page of the drawing, the same stud is referenced again, but this time with a positional...
Interesting insights! A few points for clarification:
When you suggest using the largest surface as the primary datum and defining the secondary datum along the perimeter, wouldn’t trimming variations potentially affect the hole positions?
Since adding an extra hole in the large surface isn’t...
Hey everyone,
I'm a bit of a novice when it comes to GD&T. I can read drawings and figure out how to design a checking gauge based on the GD&T, but this is my first time being tasked with applying GD&T to a part. My boss has handed me a bracket that attaches to a car and supports the spoiler...
@ctopher: There are just Vehicle co-ordinate system and just shows what datum is restricting what axis i.e. C/C: Cross-car, F/A: Fore-Aft, U/D: Up-Down. For this thread, please ignore these directions for now.
Hey everyone,
I’m back with a bit of confusion and hope you can help me out. I'm still learning GD&T, so apologies if this seems like a basic question.
I received a component drawing where the primary datums are placed on two different surfaces, and the C datum is on a curved surface. My...
Guys, lets ignore the positional callout for now. Can you guys give your views on the datum scheme. Since the dia. of threaded hole (B & C) is not given, what should we go with
Hello guys. We just got a new plastic part and we were reviewing its drawing when we noticed that there is positional callout at the corner and it says TYP 4x. Since it is a continous edge, I am wondering why it says 4x. ALso, how could we measure positional tolerance at the corner. Any ideas...
NO, you dont have to make it firm. I was just trying to understand what you mentioned in your last message. Was wondering where the flatness callout would be
3DDave: That is a very well explained and detailed view. Thank you. One thing I want to confirm is where are you saying the primary datum should be? I did not follow it, I am sorry, new to this.
Thank you guys for the help. I have contacted the Gauge-guys and they are coming up with a concept. If it still didnt work, I will contact the customer to change the datum scheme in the print
