Some Relationships between Measurement Capability Indices of Type 1 Study, Gage R&R Study, and ISO 22514-7
Seunghoon Lee, Keun Hong Lim · Journal of the Korean society for quality management · 2016
Purpose: This paper reviews Type 1 Gage study, Gage R&R study, and procedure of ISO 22514-7 for assessing a measurement system, and discusses some relationships between the measurement capability indices. Methods: The gage capability index Cg of Type 1 Gage study, precision-to-tolerance ratio PTR of Gage R&R study, and measurement performance ratio QMS and QMP of ISO 22514-7 are considered in this paper. Results: This paper derives the relationships between Cg and QMS, PTR and QMP , and QMS and QMP, respectively, and discusses the acceptance conditions for each procedures. Conclusion: The measurement capability analysis is the first step for the quality improvement of the manufacturing processes. Therefore the result of this study provides a helpful guidelines for assessing the measurement system, enabling proper evaluation of manufacturing processes. Key words: Type 1 Gage Study, Gage R&R Study, ISO 22514-7, Measurement Capability Indices