How is welding sequence planned for body shop assembly?

Welding sequence planning considers: Part geometry constraints (access for electrodes/robots), fixture design (clamping sequence), thermal distortion control (balanced welding patterns), weld quality (avoiding shunting effects), cycle time optimization, and robot motion efficiency. Body shop layout progresses from subassemblies (floor, bodysides) to major assembly (underbody, framing, closures). Within stations, welding sequence balances distortion by alternating sides, works from constrained to unconstrained areas, and minimizes electrode motion. Simulation tools optimize robot paths and verify reach/interference. Sequence changes may be needed to address dimensional issues or productivity improvements.