With one kind of cutting edge friction stir welding head

With one kind of cutting edge friction stir welding head, which is mainly composed of clamping handle (1), the transition of the cylinder (2), shoulder (3) and a stirring needle (4), with clamping handle (1), transition cylinder (2), shoulder (3) and a stirring pin (4) are connected in turn, wherein said stirring needle (4) has a surface provided with a plurality of axially disposed helical groove (6), in the left edge of the spiral groove (6) provided with a number of insert pockets (7), installed inside each blade groove (7) in a number of cutting insert (5), each of a plurality of helical grooves (6) of cutting insert cutting edge (5) (8) consisting of a helical cutting edge; end faces concave-type shoulder (3) and stirring needle (4) is connected to the storage and to facilitate redistribution of plasticized material. The present invention increases the plastic material in the horizontal and vertical mobility, enabling material to be mixed more fully and even enhance the mechanical properties of the connection area, greatly improving the quality of the welding connection region and connection speed.