lean six sigma greenbelt project b - regrind
TRANSCRIPT
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Lean Six Sigma Greenbelt Project B - Regrind
TEAM KAIZENTEAM NO 9
VENKATESH SRINIVASANBHAARAT KUMAR PRAVEEN SUGURUUKESH CHAWAL
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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.
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Measure:
Torque Test Capability Minimum breakage torque for Gear and Cam Fixture Gauge repeatability and reproducibility
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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
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Improve
Improvements to fixture and test process
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Control
Statistical Process Control of Gear and Cam Breakage
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Team Assumption
Cost Analysis is given more priority than Cpk. Any Dimensional change less than 0.0005 are considered
insignificant.
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DELIVERABLES
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CAPABILITY STUDY Cam 25% vs Cam 50%
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CAPABILITY STUDY Cam 25% vs Cam 0%
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CAPABILITY STUDY Gear 25% vs Gear 50%
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CAPABILITY STUDY Gear 25% vs Gear 0%
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REGRESSION MODEL
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HYPOTHESIS TESTING
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ANOVA TEST OF GRR 1 vs GRR 2 - CAM
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ANOVA TEST OF GRR 1 vs GRR 2 - GEAR
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Economic Analysis
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SPC
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Conclusion
25 % is better options than 50% and 0%.
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