Friction stir welding tool assembly with temperature sensing ability

A friction stir welding tool assembly with temperature sensing ability comprising:

• a female tool member, having a friction-generating shoulder for generating friction with two workpieces, an axial through hole and a radial threaded hole, the axial through hole being extended through a center of the friction-generating shoulder along a central axis of the female tool member, the radial threaded hole being extended in a radial direction of the female tool member and being in communication with the axial through hole;
• a stirring tool member, having a fixed section and a stirring section, the fixed section being inserted in the axial through hole, the stirring section being extended from the friction-generating shoulder in a direction pointing away from the axial through hole, the stirring section being adapted to be driven into a gap between the two workpieces for stirring;
• a temperature-sensing probe, being adapted to contact and sense a working temperature of the stirring tool member;
• and
• a bolt, being threaded in the radial threaded hole to abut against the fixed section.