How to call out this surface finish
How to call out this surface finish
(OP)
We have parts that have been made for years by one supplier but now, we are getting the parts made by another supplier. WE have trouble interpreting and agreeing on what the current surface finish call out is. See attached.
The parts are supposed to have an intentional roughness (100-150 Rq) in a crisscross pattern. This was done by grinding.
So, my understanding of the current callout would be a .100-.150" step every .030" But if I understand this correctly, it doesn't specify that there should be about .150" between the crisscrossing cuts.
What would be the correct callout, or is there even a callout that would specify a .150" spacing (peak to peak) crisscross pattern that varies .100-.15 steps between peaks?
Does the question even make sense?
http://files.engineering.com/getfile.aspx?folder=9...
The parts are supposed to have an intentional roughness (100-150 Rq) in a crisscross pattern. This was done by grinding.
So, my understanding of the current callout would be a .100-.150" step every .030" But if I understand this correctly, it doesn't specify that there should be about .150" between the crisscrossing cuts.
What would be the correct callout, or is there even a callout that would specify a .150" spacing (peak to peak) crisscross pattern that varies .100-.15 steps between peaks?
Does the question even make sense?
http://files.engineering.com/getfile.aspx?folder=9...





RE: How to call out this surface finish
https://en.wikipedia.org/wiki/Surface_finish
Do you really have a knurled surface? http://www.eng-tips.com/viewthread.cfm?qid=173397
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: How to call out this surface finish
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: How to call out this surface finish
John Acosta, GDTP Senior Level
Manufacturing Engineering Tech
RE: How to call out this surface finish
RE: How to call out this surface finish
----------------------------------------
The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: How to call out this surface finish
John Acosta, GDTP Senior Level
Manufacturing Engineering Tech