Welding equipment can range from a simple modified drill press or lathe for
prototype work or pre-production runs, to more automated and expensive
production machines. The figure below shows the principle of more
sophisticated equipment.
A flywheel is accelerated to the desired rotational velocity using a motor.
The motor is disengaged at the start of the weld cycle, and the kinetic energy
stored in the flywheel is converted into heat energy during welding. The
pneumatic cylinder generates the welding pressure.
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