CMM Inspection Fixture — DFMEA & Precision Locating Design

Challenge: Eliminate rework caused by tolerance mismatch between machined parts and inspection fixtures — improve CMM measurement repeatability for high-precision aluminum components. What I did: - DFMEA analysis: identified 8 failure modes, resolved 6 pre-prototype - Hardened locating pins with H7/p6 interference fit — ±0.02mm repeatability - Toggle clamp assembly design — consistent clamping force, zero part lift-off - Worst-case tolerance stack-up for fixture-to-part interface - Gage R&R validation across 30 measurement cycles with QC team Result: 25% reduction in rework rate · DFMEA risk score 168 → 48 RPN · Enhanced CMM accuracy confirmed across production runs Tools: SolidWorks · GD&T · DFMEA · CMM Inspection · Tolerance Stack-up · Root Cause Analysis