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Metrology and Gaging
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"nds" or Number of Discriminate Samples - the Necessary Tool to Work With "ndc"!

Posted 29th March 2018 at 11:28 AM by bobdoering (Bob Doering)
Updated 10th April 2018 at 03:08 PM by bobdoering

By now, you should be aware of the concept of “ndc” or number of discriminate categories that a measurement gage is capable of discerning. It is a statistically significant discrimination, or the capability of telling the difference between items even...
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INDEX TO CONTENT ON BOB DOERING'S BLOG!

Posted 26th May 2014 at 11:24 AM by bobdoering (Bob Doering)
Updated 3rd June 2016 at 03:20 PM by bobdoering

Here is a handy index for the information in my blog! (Be sure to click Continue reading... below to see the whole page!)

SPC GENERAL

The CORRECT steps to implement an SPC chart


SPC FOR PRECISION MACHINING...
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Gage Resolution Required for SPC!

Posted 12th November 2009 at 10:51 AM by bobdoering (Bob Doering)

When considering the concept of what gage resolution is appropriate for SPC, we can benchmark some of the work from the automotive industry found in AIAG MSA (Measurement System Analysis)
3rd edition. It refers to the "10:1 rule of thumb"...
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Perceptions of a Good Gage

Posted 24th February 2009 at 01:45 PM by bobdoering (Bob Doering)
Some Related Topic Tags gage, gage pressure, gage r&r, micrometers

Sometimes, getting a point across in a production setting is tough. Getting production folks to understand gaging issues can be one of those challenges. Here are a couple tips I use in my metrology class, that have also worked well on the shop floor....
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