Method and device for detecting the mechanical forces at the welding pin tip in the process of friction stir welding and computer program and machine readable carrier with a program code for carrying out the method

摘要

Apparatus and method for detecting the mechanical forces at the weld pin tip in the friction stir welding process, comprising the following features: a) a strip-shaped sensor (3) on a longitudinal side of a weld pin (12) via a pin stem (12) 13) by means of a tool receiving cone (14) and a tool bell (9) holding a welding shoe (11), b) a conical sidecut (20) in the wider region of the tool receiving cone (14) receiving a sensor (18 ) for detecting the axial force, the torque and the bending moment on the welding pin (12), c) a further waist in the front region of the tool receiving cone (14) with three circumferentially spaced 120 degrees sensors (24 ), d) a sensor signal amplifier with a rotor antenna (19) for receiving, amplifying and relaying all acquired measured values, these measured values being from a static antenna (17) to a machine controller e) an inductive power supply system.