The Pneumatic Force System in Resistance Welding

The study involved the analysis of the pneumatic force system, used in resistance welding machines, in relation to the dynamics of electrode displacement. The analysis was performed in relation to two phases of the technological cycle, i.e. positioning pneumatics (from the activation of the pneumatic valve to the moment when electrodes come into contact with the material being welded) as well as the pneumatics of force accretion before and during the flow of current. The analysis, performed using the Festo software programme (phase 1) as well as using elements of the automatics system (phase 2), was focused on two important elements, i.e. time at which electrodes reached their stabilised position and the kinetic energy of electrode impact.