Gear shaft laser welding machine

The utility model discloses a gear shaft laser welding machine. The device comprises a conveying mechanism, a feeding device I, a feeding device II, a laser welding device, a flaw detection device, aplurality of clamps, a plurality of pressing pieces, a pressing device, an axial gap adjusting device and an axial gap detection device, wherein the axial gap detection device is arranged under the laser welding device, the pressing device is arranged on one side of the axial gap detection device and fixed to the upper end of the conveying mechanism, and the axial gap adjusting device is arrangedunder the pressing device and fixed to the lower end of the conveying mechanism. The pressing device, the axial clearance adjusting device and the axial clearance detecting device are matched with oneanother while automatic welding integrated production is achieved, so that the gear shafts are high in welding speed and quality, it can be guaranteed that the axial clearances of the gear shafts ofthe same batch are consisten