Cooling for Rail On-Board Power Supplies

Requirement

Rail on-board power has a specific profile: tight enclosures, large base plates, continuous vibration, and small batches that still must repeat exactly. The larger the part, the harder flatness becomes; the smaller the batch, the easier it is to skip fixtures.

Our approach

Split large plates to limit distortion from part size, mill and correct the machined face separately, rib the brackets and gauge every thread. Even small batches keep fixed fixtures and a fixed inspection list instead of re-dialling each run.

Holding flatness on large parts

Splitting the face into machinable blocks and controlling each one before assembly is steadier than forcing a single large plate; add a stress-relief step where needed.

Vibration and fastening

Ribs on brackets, enough edge distance at bolts, and go/no-go thread checks are the three most direct actions under vibration.

Small-batch consistency

Small volume is no reason to drop fixtures — that is what makes batch five match batch one.