Capability of Gage (Cg & Cgk) for New and Repaired Gages

E

Ehsan Heidari

#1
in AIAG MSA 3th edition, I can`t find any thing about Cg & Cgk, while I red i some books, these indexes must be calculated when we purchase new instrument or repair instruments.
however, have anybody more information about Cg & Cgk?
 
Elsmar Forum Sponsor
V

Vasant

#3
Re: Capability of Gage (Cg & Cgk)

Hi,

Gage Cg, Cgk is the standard pubilished by Bosch group and available in german Q-Das SPC software.

regards,
vasant
 

Marc

Hunkered Down for the Duration with a Mask on...
Staff member
Admin
#4
Re: Capability of Gage (Cg & Cgk)

<snip> Gage Cg, Cgk is the standard pubilished by Bosch group <snip>
Anyone know where to get Bosch 'standards'? My assumption is you would have to be a supplier to Bosch to get a copy of their 'standard'.
 

Marc

Hunkered Down for the Duration with a Mask on...
Staff member
Admin
#6
Re: Capability of Gage (Cg & Cgk)

Nice of Bosch to make them available to the public.
 
Y

Yulia

#7
Regarding Cgk I have some info. But I am not really sure if its right.
5.4.3 The Gauge Capability (cgk):
The gauge capability study is applicable when measurements taken are not influenced by the operator. This is where measurements are taken / read by the measuring unit which is integrated in the machine. Also this method could be applicable when the measurement can not be repeated twice on one sample (destructive measurements).
A principle of this study is to measure the same feature at least 50 times using the measuring unit. The acceptable capability index of this study is cgk ≥ 1.33 unless otherwise specified by the customer or by any other means.
For calculating the capability values, the following can be used.
• Calculation sheet of GME Document ххххххх, Machine Capability Analysis • Mintab Software or any other appropriate software.

5.4.3.1 Evaluation criteria for Gauge Capability:
• cgk≥1.33 - the measurement method is acceptable • cgk<1.33 - the measurement system is not sufficient for measurement. The real process capability can be jeopardized by wrong measurement system. A deep analysis must be done in order to define and eliminate the root cause of the variability.
(Wrong measuring tool, accuracy, maintenance).
• After the root causes are defined and solved, the MSA study must be repeated again.
 
Y

Yulia

#8
May somebody help me with question - is it really possible to use Cgk calculation for made MSA for destructive test? If no, do you know any another calculations?
 
S

sgbhat

#9
MSA as per M/s Bosch CSR manual ; Cg-Cgk etc are mentioned ; Is excel calculation sheets available with anybody ; if Yes can I get them for each said in Bosch CSR Manual
 

Stijloor

Staff member
Super Moderator
#10
Thread starter Similar threads Forum Replies Date
S Capability or Gage R&R Study for Leak Tester? Reliability Analysis - Predictions, Testing and Standards 15
O Capability or Gage R&R Study for Leak Tester Reliability Analysis - Predictions, Testing and Standards 11
V Supplier Capability and 100% Sort causing Gage Wear APQP and PPAP 1
D AIAG 4th Edition Capability Study and Gage R&R Requirements Document Control Systems, Procedures, Forms and Templates 8
B MSA (Gage R&R) vs. Capability Cpk Study - Helium Leak Check Station Statistical Analysis Tools, Techniques and SPC 2
T Machine GR&R (Gage R&R) - Capability Study Capability, Accuracy and Stability - Processes, Machines, etc. 5
F Process Capability on go / no-go gage? Capability, Accuracy and Stability - Processes, Machines, etc. 1
S Operator Capability - Gage R&R Poor Repeatability Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 8
Y Product Stability (Machine Capability) vs. Equipment Repeatability (Gage R&R) Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 7
I What is Gauge Capability? Dial Thickness Gage and Digital Vernier Calipers Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 17
M Gage R&R and Capability - Between 10% and 30% and cannot be improved Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 4
K Machine Capability Capability, Accuracy and Stability - Processes, Machines, etc. 2
C How to Establish the Calibration & Measurement Capability (CMC)? ISO 17025 related Discussions 1
lanley liao How to keep the manufacturing capability under the API monogram Oil and Gas Industry Standards and Regulations 6
M Minitab Capability of the Population (no sampling) Using Minitab Software 11
A Capability Study - in the beginning of your career what should you have known about the tool Quality Tools, Improvement and Analysis 11
B Two excellent examples of process capability analysis from Quality Magazine Capability, Accuracy and Stability - Processes, Machines, etc. 5
Q Capability study with a minimum spec Statistical Analysis Tools, Techniques and SPC 8
Q Capability - CPk comparison values Capability, Accuracy and Stability - Processes, Machines, etc. 12
R Capability analysis - What is going on this chart? Manufacturing and Related Processes 15
H Capability Data for Paint Thickness on Painted Parts Statistical Analysis Tools, Techniques and SPC 10
N Is capability applicable for a destructive test? Capability, Accuracy and Stability - Processes, Machines, etc. 9
D Pre-Production Capability Assesment Reliability Analysis - Predictions, Testing and Standards 5
T Iec 60601 Impedance and current-carrying capability IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
S Machine Setup for a CNC Machine Capability Study Capability, Accuracy and Stability - Processes, Machines, etc. 1
D O Ring capability and measurement - What is the automotive 'norm' for capability studies on O Rings? General Measurement Device and Calibration Topics 3
M Measuring Capability of Process with Multiple Specifications Capability, Accuracy and Stability - Processes, Machines, etc. 6
G Capability Study for Tapped Hole Reliability Analysis - Predictions, Testing and Standards 3
E Sampling for capability studies for variables and attributes Capability, Accuracy and Stability - Processes, Machines, etc. 4
L How to evaluate the process capability of a data set that is non-normal (cannot be transformed and does not fit any known distribution)? Capability, Accuracy and Stability - Processes, Machines, etc. 12
T Final process capability results - What I am supposed to present? Cp and CpK? APQP and PPAP 11
G Plotting capability study data - I have a bimodular data distribution Capability, Accuracy and Stability - Processes, Machines, etc. 4
A Statistic Tools to Know Capability of Sealing Machine for Seal Width Capability, Accuracy and Stability - Processes, Machines, etc. 3
Q How to perform Process Capability for true position Statistical Analysis Tools, Techniques and SPC 11
V Generic requirements regarding capability study in automotive Capability, Accuracy and Stability - Processes, Machines, etc. 1
A Capability Analysis for Packaging Seal Strength with spec. >0.1 Kgf using Minitab Using Minitab Software 6
J Initial capability for injection molding part Capability, Accuracy and Stability - Processes, Machines, etc. 6
Ron Rompen Ford Method - Position Capability with MMC Modifier Capability, Accuracy and Stability - Processes, Machines, etc. 14
S Understanding control chart and measurement capability Statistical Analysis Tools, Techniques and SPC 2
L IATF 16949 Cl. 8.3.3.2 Manufacturing process design input - Process capability IATF 16949 - Automotive Quality Systems Standard 1
B Short term vs Long term Capability - We ship millions of parts in a year Capability, Accuracy and Stability - Processes, Machines, etc. 7
M IATF 16949 - Capability study on non critical dimensions? Statistical Analysis Tools, Techniques and SPC 4
J Are Capability Requirement(s) Valid for All Characteristics? Capability, Accuracy and Stability - Processes, Machines, etc. 6
Y Process Capability for Non-Normal Data - Philosophical Questions Capability, Accuracy and Stability - Processes, Machines, etc. 6
M Process Capability in a High Precision Environment Capability, Accuracy and Stability - Processes, Machines, etc. 7
M CAAC-145 Manuals - Looking for examples of MOM's, MMM's Capability Lists, etc. Federal Aviation Administration (FAA) Standards and Requirements 13
J Powdercoating Capability Employing a Robotic Arm Manufacturing and Related Processes 1
L Excel Template for Cgk Study wanted (Capability Gauges Study) Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 12
V Product Development - When to start calculating Process Capability Capability, Accuracy and Stability - Processes, Machines, etc. 3
V Capability for Correlated Charteristics Capability, Accuracy and Stability - Processes, Machines, etc. 2

Similar threads

Top Bottom