SBS - The Best Value in QMS software

Gauge R&R Question

#1
My summary report on a crossed gauge R&R seems to imply that repeatability is acceptable, but reproducibility is not.

"Can you adequately assess process performance?" is 22.4%

"Can you sort good parts from bad?" is 91.5% !!!!

When I go through the data (3 operators, 3 tries each, 10 parts), every operator was able to pick the parts that were out of spec, and the parts that were in spec, all 3 times. They all matched as well (meaning all 3 operators agreed when a part was good or bad).

Are there any obvious tips about what could be going wrong when this happens?
 

Attachments

Elsmar Forum Sponsor

Jim Wynne

Staff member
Admin
#2
First, you might want to post your Minitab output as a PDF file, because not everyone will be able to open a native Minitab file. That said, the purpose of GR&R is not to find out who can identify "bad" parts, and in fact there's no reason to use anything but parts that represent normal process output. The primary purpose is to verify that the right measurement system (gage + operators + parts) has been identified. The statistics will tell you if the system is adequate for inspection, process control, or both.
 
Thread starter Similar threads Forum Replies Date
C Pin Gauge Calibration using a Micrometer - Accuracy & Calibration Level Question General Measurement Device and Calibration Topics 10
J Gauge Management - with ambiguous requirements & no support ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 10
S Calibration Frequency for Slip Gauge Kit used for CMM Calibration? General Measurement Device and Calibration Topics 0
J Gauge Suggestion: Specialty or Custom General Measurement Device and Calibration Topics 1
F Calibrating Taper Sleev/Plug Gauge General Measurement Device and Calibration Topics 0
I How many gauges in a Go/No Go Gauge? General Measurement Device and Calibration Topics 7
J Standard used to determine if check fixture gauge is acceptable Reliability Analysis - Predictions, Testing and Standards 2
J Designing new gauge tracking software IATF 16949 - Automotive Quality Systems Standard 4
R Gauge R&R on pre-set torque wrench Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 2
C Aluminum galling on thread plug gauge Manufacturing and Related Processes 10
J Gauge R&R on a torque measurement Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 11
K I’m looking for a square probe for my linear height gauge Manufacturing and Related Processes 1
A Gauge Study for Small Lots Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 5
G Supplier Checking With Gauge Pin Problem Solving, Root Cause Fault and Failure Analysis 2
H Analog Pressure Gauge with no EN837 accuracy class information General Measurement Device and Calibration Topics 5
G Gauge R&R on multiple dimensions using 3D measurement system Capability, Accuracy and Stability - Processes, Machines, etc. 6
H Thread Plug Gauge Tolerances General Measurement Device and Calibration Topics 3
R Do Brands Matter When Purchasing Bore Gauge? General Measurement Device and Calibration Topics 2
D Using "Particle Size Standard" templates as gauges - How to avoid giving a gauge # while using for process control? General Measurement Device and Calibration Topics 2
D AS9100 Inspection records - Is there a requirement to have gauge ID and calibration status AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 5
G Comparing Gauge Blocks - Translating the calibration between the master set and the QA set General Measurement Device and Calibration Topics 2
F Gauge R&R & Calibration Intervals Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 14
Ron Rompen Source needed for Spline Form gauge (GO and NOGO members) General Measurement Device and Calibration Topics 3
S How to calculate the maximum allowable hysteresis of a pressure gauge General Measurement Device and Calibration Topics 1
S Gauge R and R - Product - Conveyor belt with threads that goes on Sprocket Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 10
R Feeler Gauge Calibration - What tolerance is used for calibrating feeler gauges? General Measurement Device and Calibration Topics 4
F Holes position inspection - Calculation of centre distance and plug sizes of a gauge Inspection, Prints (Drawings), Testing, Sampling and Related Topics 5
K Measurement Uncertainty Budget (MU) of for Ultrasonic Thickness gauge Measurement Uncertainty (MU) 1
R Radius Gauge R&R Study Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 10
A Calibration of Pressure Gauge, How to Determine Calibration Tolerance General Measurement Device and Calibration Topics 1
S Thread Ring Gauge verification General Measurement Device and Calibration Topics 6
G Uncertainty Budget Examples for Caliper, Micrometer and Dial Gauge Measurement Uncertainty (MU) 3
S Pressure Gauge Calibration Uncertainty Calibration and Metrology Software and Hardware 5
N Correct reading for analog pressure gauge ISO 17025 related Discussions 2
Ron Rompen Gauge Design Standards Inspection, Prints (Drawings), Testing, Sampling and Related Topics 2
B Gauge CAD certification to Part CAD vs. Gauge certification to Part CAD General Measurement Device and Calibration Topics 1
shimonv Feeler Gauge as a Medical Device Accessory EU Medical Device Regulations 3
C Proper Thickness Gauge for Foam/Felt and Soft Materials General Measurement Device and Calibration Topics 5
J What kind of Tool and Gauge in IATF 16949 Clause 8.5.1.6? IATF 16949 - Automotive Quality Systems Standard 1
alonFAI Gauge R&R for a Peel Tester (tensile tester) Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 11
R Height gauge to measure short hard to access heights General Measurement Device and Calibration Topics 3
V Why Gauge R&R 10% is acceptable for variable instruments ? Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 5
B Can we calibrate a standard pin with a gauge? General Measurement Device and Calibration Topics 2
C How to perform Gauge R & R on Automated Test & Measurement Equipment Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 8
I How to determine the thread wire size needed - Buttress Thread Gauge General Measurement Device and Calibration Topics 3
V Inactive Gauge Retention Time - PPAP Section 6 Requirements APQP and PPAP 1
Q Pin Gauge Setup - Measuring the OD of a Catheter Manufacturing and Related Processes 1
kedarg6500 Availability of 5/8" 17.75 TPI Thread Ring Gauge & Die Nut Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
J Gauge R&R for Destructive Test Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 7
J Thread Gauge Calibration Failure for Pitch Diameter being too large General Measurement Device and Calibration Topics 3

Similar threads

Top Bottom