Servo energy storage projection welding

How does the servoweldtm projection welding actuator work?

The ServoWeldTM Projection Welding Actuator produces nearly instantaneous stroke compensation to maintain optimal weld forces throughout the projection welding sequence. This is accomplished when the stored potential energy in the spring stack is converted to kinetic energy, driving the thrust tube, moving the electrode forward.

Why do servomechanical systems reduce projection height?

Due to the lower force, the projection height reduction at the beginning of the welding process was smaller (also due to the controlled process of the projection height reduction during the welding cycle); the servomechanical system caused the higher concentration of welding power (density) in the most favorable place, i.e., the projection cap.

How does servomechanical force affect a weld Nugget?

In the case of the servomechanical force system, the volume of a weld nugget was greater within the entire range of welding times, even if com- pared with the reduced force of 1.1 kN. This means the energy supplied to the weld was higher as well.

How do servomechanical forces affect the optimisation of a welding process?

The optimisation of a welding process, defined as the control of welding power spatial distribution, is greatly affected by the use of a servomechanical force system and by the application of appropriate control algorithms.

Can pneumatic force be applied during projection welding?

During projection welding, in a conventional application, such as with a pneumatic force system, the pa- rameter of electrode force is character- ized by significant limitations. Due to its high inertia, pneumatic force can- not be applied whenever fast changes of force are required.

How does a servo mechanical force system work?

In the solution involving the servo- mechanical force system, the travel of electrodes is preset, and the resultant force depends on the travel of elec- trodes and resistance to deformation (the reduction of the height) of a pro- jection being heated.