Measuring drilled hole location
Measuring drilled hole location
(OP)
Hi all
Does anyone here have experience in measuring drilled hole location on a finished part? I included a picture of what I have in mind. The part with the drilled holes is what we make. We would like to use a linear encoder thats connected to a track that can be pushed back and forth. Just not sure what kind part(or device) to use that would be connected to the fixture.
Does anyone here have experience in measuring drilled hole location on a finished part? I included a picture of what I have in mind. The part with the drilled holes is what we make. We would like to use a linear encoder thats connected to a track that can be pushed back and forth. Just not sure what kind part(or device) to use that would be connected to the fixture.





RE: Measuring drilled hole location
RE: Measuring drilled hole location
As seems to be so often the case these days, your screen shot does little or nothing to illustrate the problem. Pretty though.
Regards,
Mike
RE: Measuring drilled hole location
RE: Measuring drilled hole location
RE: Measuring drilled hole location
RE: Measuring drilled hole location
RE: Measuring drilled hole location
Your measurements are affected by temperature regardless of whether you're using a CMM.
Now if you're building the fixture shown out of Zerodur & Invar maybe ignore what I said but otherwise I'm not sure of your reasoning.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Measuring drilled hole location
RE: Measuring drilled hole location
The part's relative position to the track would be determined by checking some sort of fiducial that's tied to the part's mechanical datums. The track would step to each hole's location, and the hole's image would be centroided to determine its position and if you are using Labview, it would compare its list of correct positions and would give you a go/no-go indication.
However, it sounds like the holes are drilled by a subcontractor? Wouldn't it be better for you to get them to test and certify the position/size of the holes, since that should be part of their acceptance testing?
TTFN

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RE: Measuring drilled hole location
RE: Measuring drilled hole location
An edge finder is probably the proper (read: modern) term for the tool.
"Tolerance is +/-0.005""
This seems to be a complicated setup for such a loose tolerance. Also, what is the tolerance for the hole diameter?
RE: Measuring drilled hole location