The Elsmar Cove Business Standards Discussion Forums More Free Files Forum Discussion Thread Post Attachments Listing Elsmar Cove Discussion Forums Main Page
Welcome to what was The Original Cayman Cove Forums!
This thread is carried over and continued in the Current Elsmar Cove Forums

Search the Elsmar Cove!

Wooden Line
This is a "Frozen" Legacy Forum.
Most links on this page do NOT work.
Discussions since 2001 are HERE

Owl Line
The New Elsmar Cove Forums   The New Elsmar Cove Forums
  Measurement, Test and Calibration
  Gage R&R Output

Post New Topic  Post A Reply
profile | register | preferences | faq | search

UBBFriend: Email This Page to Someone! next newest topic | next oldest topic
Author Topic:   Gage R&R Output
JMitchell
Lurker (<10 Posts)

Posts: 2
From:Augusta, GA, USA
Registered: Nov 2000

posted 03 November 2000 04:37 PM     Click Here to See the Profile for JMitchell   Click Here to Email JMitchell     Edit/Delete Message   Reply w/Quote
I'm new to Gage R&R and am trying to determine what is the industry standard for a "good" result. The spreadsheet I downloaded outputs results for EV, AV, R&R, PV, and TV. Which output is the best to base judgments about the equipment on? And what is a typical acceptable value?

Your help is appreciated.

IP: Logged

Al Dyer
Forum Wizard

Posts: 622
From:Lapeer, MI USA
Registered: Oct 2000

posted 03 November 2000 05:41 PM     Click Here to See the Profile for Al Dyer   Click Here to Email Al Dyer     Edit/Delete Message   Reply w/Quote
JMITCHEL,

If you are in the automotive industry I would look in the AIAG MSA manual for general requirements for R&R. This general guideline is based on a 10%, 20%, 30% scale.

A realistic guideline should be determined based on the measurement discrimination required for the use of a specific gage. These guidelines should be noted in the appropriate areas of your quality system documentation.

R&R is a good place to start but the MSA system needs to evolve to determine bias, linearity, and stability.

This is a very general overview and I hope other members of the forum will have further input.

ASD...

------------------
Al Dyer
Mngt. Rep.
ullysses3@excite.com

IP: Logged

Atul Khandekar
Forum Contributor

Posts: 21
From:Pune, India
Registered: Mar 2000

posted 06 November 2000 04:10 AM     Click Here to See the Profile for Atul Khandekar   Click Here to Email Atul Khandekar     Edit/Delete Message   Reply w/Quote
R&R upto 10% means the measurement system is acceptable. If it is between 10% and 30%, the system may be acceptable on the basis of criticalitu of application. A lot of subject matter knowledge would have to go into justifying acceptability.

In addition, you should consider Control Chart analysis for every operator to determine influence of operator and methods over overall R&R. Control charts can also help determine adequacy of part-to-part variation.

Lastly, there are 2 more ways of determining adequacy of the system for a particular application, viz,
1.comparison of R&R error with Standard Deviation of the manufacturing process you are trying to control and
2.comparison of R&R error with design Tolerance.

These two methods would show you how much of your process std deviation (or tolerance) is 'eaten up' by measurement system error.

-Atul.

IP: Logged

sagar
unregistered
posted 03 December 2000 02:33 AM           Edit/Delete Message   Reply w/Quote
dear atul
as you have said that acceptance limit is 10 % is good. But can you give e.g. of instrument supplier name who give / supply instrument with 10% RR with respect to process variation.

sagar

IP: Logged

Atul Khandekar
Forum Contributor

Posts: 21
From:Pune, India
Registered: Mar 2000

posted 04 December 2000 12:11 AM     Click Here to See the Profile for Atul Khandekar   Click Here to Email Atul Khandekar     Edit/Delete Message   Reply w/Quote
I doubt if any gage manufacturer can actually guarantee 10% R&R.

You may refer to the discussions under the thread 'New Gage R&R' on this forum.

-Atul.

IP: Logged

elardila
unregistered
posted 06 December 2000 08:24 AM           Edit/Delete Message   Reply w/Quote
Dear Sir.
I need your helping about the procedures to measure the capability and R&R of torque Wrenchers, thanks for for your helping.
S.O.S.
Please send information
elardila@hotmail.com

IP: Logged

All times are Eastern Standard Time (USA)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply Hop to:

Contact Us | The Elsmar Cove Home Page

Your Input Into These Forums Is Appreciated! Thanks!


Main Site Search
Y'All Come Back Now, Ya Hear?
Powered by FreeBSD!Made With A Mac!Powered by Apache!