White vehicle body welding equipment and welding method

The invention relates to body-in-white welding equipment which comprises a clamp and a driving device, the clamp comprises a support and a body fixing assembly, the body fixing assembly comprises a first moving assembly, a second moving assembly, a third moving assembly, a connecting pin, a clamping assembly and a locking device, and the driving device comprises a driving assembly and a grabbing assembly. The invention further provides a body-in-white welding method. The driving device drives the clamping assemblies to linearly move in any direction, the switching time of the clamps is short, the working efficiency is improved, meanwhile, the clamping assemblies of all the clamps move through the driving device, the consistency of moving and positioning of the clamping assemblies of all the clamps is guaranteed, errors of all the clamps are prevented from being different, and the working efficiency is improved. The working process of all the clamps can be conveniently controlled, the positioning precision of