Lean Six Sigma Greenbelt Project B - Regrind
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Transcript of Lean Six Sigma Greenbelt Project B - Regrind
Lean Six Sigma Greenbelt Project B - Regrind
TEAM KAIZENTEAM NO 9
VENKATESH SRINIVASANBHAARAT KUMAR PRAVEEN SUGURUUKESH CHAWAL
DMAIC Define:
DEFINING THE PROBLEM: Consumption of extra material Only virgin material used Spruce and Runners were discarded
GOAL: Reduce virgin material consumption.
CONSTRAINTS: Dimensional changes are not significant. torque performance should not go below Cpk/Ppk of 1.25 minimum.
Measure:
Torque Test Capability Minimum breakage torque for Gear and Cam Fixture Gauge repeatability and reproducibility
Analyze:
Dimensional Comparison Torque Capability Comparison Virgin Nylon vs Regrind Relationship of regrind percentage to breakage torque Capability Analysis for Gear and Cam Breakage Gage R&R Study – Nested ANOVA
Improve
Improvements to fixture and test process
Control
Statistical Process Control of Gear and Cam Breakage
Team Assumption
Cost Analysis is given more priority than Cpk. Any Dimensional change less than 0.0005 are considered
insignificant.
DELIVERABLES
CAPABILITY STUDY Cam 25% vs Cam 50%
CAPABILITY STUDY Cam 25% vs Cam 0%
CAPABILITY STUDY Gear 25% vs Gear 50%
CAPABILITY STUDY Gear 25% vs Gear 0%
REGRESSION MODEL
HYPOTHESIS TESTING
ANOVA TEST OF GRR 1 vs GRR 2 - CAM
ANOVA TEST OF GRR 1 vs GRR 2 - GEAR
Economic Analysis
SPC
Conclusion
25 % is better options than 50% and 0%.