A fiber‑delivered energy‑feedback laser welding system enables stable, high‑energy welding of full‑aluminum frames used in ultra‑thin phones, overcoming CNC processing limits for midplates. The system produces repeatable welds with low thermal distortion suitable for R&D and small‑batch production.


A fiber‑delivered, energy‑feedback laser welding system engineered for the precision joining of full‑aluminum frames used in ultra‑thin mobile devices. By combining high available laser energy with real‑time energy feedback control, the system maintains a stable output during high‑power welding cycles, enabling consistent penetration and weld quality on aluminum alloys that are difficult to process by CNC alone.
The platform is optimized for welding external frames to midplates where CNC machining of the midplate is impractical; it joins complex geometries with minimal heat‑affected zone and low overall thermal distortion, preserving dimensional tolerances and cosmetic surfaces. Process modes include pulsed and continuous operation to tailor heat input for different joint types and material thicknesses, reducing the need for secondary rework.
Designed for desktop R&D and pilot production, the machine integrates a micrometer‑grade XYZ micropositioner and vacuum fixture capability to secure tiny components during welding, plus a stainless steel workstage for mechanical stability. Modular automation interfaces, guarded enclosures, and process monitoring features support repeatability, inline quality assurance, and safe operation in production environments.
Operational benefits include improved cycle stability during large‑area aluminum welding, higher first‑pass yield on delicate assemblies, and predictable post‑weld surface characteristics that simplify downstream finishing and anodizing. The system is particularly suited to manufacturers transitioning from stainless‑steel to full‑aluminum frame designs who need a robust joining solution that complements CNC frame production.