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  Measurement, Test and Calibration
  CMM Band Width

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Author Topic:   CMM Band Width
Marc Smith
Cheech Wizard

Posts: 4119
From:West Chester, OH, USA
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posted 18 April 1999 04:55 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
I've never heard of this - has anyone else here??

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Subject: Q: Band Lengths on CMM /Shibley
Date: Wed, 14 Apr 1999 14:11:13 -0600
From: ISO Standards Discussion

From: PPPQC@aol.com
Subject: Q: Band Lengths on CMM /Shibley

We had a curious question brought to us the other day, the question was about our band width on our CMM. We believe it is . 0005." How ever being in a metal stamping environment, the question was "How does band width relate to accuracy"? I am afraid that I did not have the answer. For Calibration needs and the accuracy of collected data how important is "Band Width" and how does that relate to the question of shortening or lengthening the width itself?

Dan Shibley

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Batman
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From:Kane, PA 16735
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posted 18 April 1999 12:23 PM     Click Here to See the Profile for Batman   Click Here to Email Batman     Edit/Delete Message   Reply w/Quote
I have programmed a touch probe CMM for years, and tried to keep up with the latest, but I have never heard of "band width." Do they mean volumetric accuracy? Precision? Repeatability?

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SCOTT SNYDER
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posted 20 April 1999 07:50 AM     Click Here to See the Profile for SCOTT SNYDER   Click Here to Email SCOTT SNYDER     Edit/Delete Message   Reply w/Quote
I HAVE 3 CMM'S 2 OF THEM CNC AND IN 10 YEARS HAVE NEVER HEARD OF BAND WIDTH IN AND CONVERSATION OR DOCUMENTATION.

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Marc Smith
Cheech Wizard

Posts: 4119
From:West Chester, OH, USA
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posted 20 April 1999 08:06 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
I have asked a bunch of folks who are 'CMM Jockeys' and they have never heard of it either. They look at me like I'm weird (which may be part of the problem and may be true, but has nothing to do with the question....).

I'm gonna write PPPQC@aol.com and see if we can find out.

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