Hi all.
I have what may be considered a metrology/inspection related question but since it's strongly GD&T related too I think that may be here is the best place to ask.
Consider interpretation per ASME Y14.5-2018. A part has a periphery that is some polygon. The bottom flat surface is used as...
Suppose that blind holes for location of dowel pins have a tolerance of position specified. The primary datum feature A is the functional mating surface the holes are perpendicular to (the one in which the holes were drilled).
For manual inspection without CMM, how is the primary datum being...
What is the logical or functional reason for the ASME Y14.5 rule that the datum order and material boundary conditions need to be preserved down all segments of a composite tolerance feature control frame?
Are there any differences at all between the content of ISO GPS standards and the corresponding DIN English language standards?
Examples,
ISO 1101:2017 Vs. DIN EN ISO 1101:2017.
ISO 12780-1/2:2011 Vs. DIN EN ISO 12780-1/2:2011.
Hi,
I'm trying to brush up on stack-up calculations.
I prefer to make up my own exercises that are closer to real cases than textbook examples. So I came up with this v-block and shaft idea (attached pdf) with the "v" surfaces having a profile tolerance specified.
To make it interesting the...
I heard/read in some places that controlling runout helps to prevent static unbalance, but not dynamic unbalance. Is it true? And if so, could anyone tell why it isn't useful for dynamic?
Hi, I would like your advice weather this application of profile of a line is valid according to ASME Y14.5.
In case you are wondering what this is for, I have a pile of square 10X10 mm stock bars that I want to later be cut to slices at that angle and get the 10X14.4 mm dimensions accurate...
Considering surface texture terms (roughness, waviness, lay),
The machining marks resulting from a machining process - not from chatter or workpiece stability issues, but only from factors as the cutting edge nose radius and machining feed - do they get detected as a roughness profile?
Or...
Hi all,
My question is about implementation of ASME Y14.36 or the parallel ISO standard for surface texture requirements specification. ASME B46.1 lists some acceptable cutoff length values for measurement purposes - 0.08, 0.25, 2.5, 8 mm. In the same standard there is also some guidance on...
Hi all.
Please refer to the images below showing dimensions and a tolerance table for a relief geometry at the end of an internal or external thread.
I have two general questions:
1. What are some common measurement means to inspect these requirements (distances and angles with tolerances), on...
