How do you establish and maintain body dimensional quality in high-volume production?

Dimensional management approach: 1) Design phase - datum strategy, GD&T definition, tolerance analysis predicting build variation, assembly sequence optimization; 2) Tooling development - fixture design matching datum scheme, tryout dimension validation, die compensation for springback; 3) Production setup - master part correlation, measurement system capability, process capability studies; 4) Ongoing control - in-line measurement systems (laser, vision), SPC charts on critical dimensions, reaction plans for out-of-control conditions; 5) Problem resolution - dimensional fault analysis to root cause, fixture audit schedules, component-to-assembly correlation. Critical dimensions (functional, appearance, customer-sensitive) receive highest attention. Cross-functional teams align stamping, body, and supplier dimensions. Investment in coordinate measuring machines, optical measurement, and in-line inspection supports quality.