When we talk about factories,
places, vehicles, we sometimes don´t know that these manufacturing facilities
are equipped with milling and drilling machines. In order to increase their
performance it is necessary for them to employ high speed cutting technology,
this makes them better in every way possible in the cutting process,
Milling spindles with extremely high rotational speed and great stiffness are
required for high perfomance milling operations.
An active magnetic bearing must
be used to meet these requirements for the previous milling needs said. The
amplifier of the basic control circuit for an active magnetic bearing must
provide sufficiently high voltage drop across the resistance of the magnet coil
in order to get major stiffness and a large duration while in the process
of the machine.
To improve reliability and
reduce costs, IGBT devices are used in the newly developed switching amplifier,
this IGBT have been tested in a practical system of a high speed milling
spindle ( 35 KW/40,000rpm) consisting of an active magnetic bearing for
five axes.
No comments:
Post a Comment