The THE APPLICATION OF GAUGE R&R ANALYSIS IN A SIX SIGMA CASE OF IMPROVING AND OPTIMIZING AN ACTUATOR ARM MEASUREMENT SYSTEM

Abstract

The study of this research was the measurement system of electronic component manufacturers for purposes of improving the quality of measurement and reducing the cost of defects by applying the Six Sigma methodology. The study followed the DMAIC approach. In the Define phase, the key problem was identified as the delivery of actuator arms with parameter deviations from customer requirements.  It was caused by the parameter measurements (Measurement, M) of the part being inconsistent between the IPQC and OQA departments. After that, the analysis (Analyze, A) was performed a cause-and-effect diagram. It was found by the factors related to the Coordinate-Measuring Machine (CMM) of each department, operators and measurement method. For the improvement stage (Improve, I), the researcher designed and improved the measurement process by checking the time comparison of 3D CMM machines, training operators, and designing of workpiece holding devices. Finally, the control step (Control, C) was seriously experimented. The result showed that after an improved measurement method, the number of products that were not required was reduced from 121 to 6 pieces/month and the cost of customer complaints decreased from 24,308 baht to 1,200 baht/month.