A capability index of 1.33 means the process spread fits comfortably inside the tolerance band — roughly 63 defects per million even before inspection. Holding that on machined aluminum at volume takes structure, not heroics.
Dedicated lines beat shared machines
Volume programs at Hongfeng run on cells dedicated to one part family. Fixtures stay mounted, offsets stay learned, and the machine's thermal behavior becomes a known quantity instead of a daily surprise.
Gauge every cycle, adjust before drift becomes scrap
Operators gauge critical dimensions every cycle at line side; automated stations gauge full patterns on sampling plans. Data feeds SPC charts watched by line leaders — compensation happens at the first trend signal, not the first reject.
Tooling as a controlled variable
Tool life is counted, not guessed: inserts change on cycle count with offsets pre-measured on presetters. A tool change on our volume lines shifts the process by a known, compensated amount.
The result: interchangeable parts, batch after batch, month after month — which is what our automation and automotive customers are actually buying.
