
B-70264EN/02 3.INTERNAL STRUCTURE
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(3) Laser gas circulating system
A gas circulating system is configured by connecting the
resonator and the fan (turbo blower) with a circulating pipe.
Laser gas runs through the discharge tubes at a speed of 200 m/s
or higher. In this circulating system, a water-cooled heat
exchanger, used to cool the high-temperature gas from the
discharge tubes, is provided at the inlet side of the turbo blower.
At the outlet side of the turbo blower, another water-cooled heat
exchanger is provided to dissipate the compression heat of the
turbo blower.
(4) Pressure control unit
To ensure stable laser output, this controller controls the laser
gas pressure of the laser gas circulating system with commands
issued from the CNC, while exhausting degraded laser gas.
(5) CNC interface
This is the interface of the laser oscillator for connecting to
FANUC Series 16i-L. CNC commands that, control the
operation of the laser oscillator, such as start/stop and laser
output, are input via this interface.
(6) Housing
An enclosure that houses the above components. The housing,
consisting of metal panels, completely encloses the laser
oscillator, thus protecting the operator from exposure to laser
radiation and from high voltages. All panels are screw-fixed and
cannot be removed without an appropriate tool.