- Laser processing is characterized
that various types of materials such as hard metal and
ceramics can be processed in a high speed mode, because
it is possible to concentrate the input laser energy to a
small area. On the other hand, heating, melting and
vaporization of material occur continuously when a high
power laser energy is applied, and such phenomena make
difficult to control the laser processing in an on-line
mode. So, in the case of material removal process, for
instance, it is very difficult to keep a removal volume
and a processed accuracy at a constant level without
applying a laser process control.
It is well known that sound is generated when laser
processing is carried out and its intensity changes
according to the variations of processing conditions.
By considering these technological backgrounds, it may
be necessary to realize a high accuracy control system
for a laser processing, in which a processing information
is monitored and is transferred to a laser machine to
construct a feed back system.
The final target of this research is to construct a laser
processing system to manufacture free surfaces by
utilizing detected laser processing sound and by applying
feedback technologies.
(Contact:
Tsuneo KURITA kurita@mel.go.jp)
