Abstract
Laser cutting has a huge importance to manufacturing industry. Laser cutting machines operate with fixed technological parameters and this does not guarantee the best productivity. The adjustment of the cutting parameters during operation can improve the machine performance. Based on a coaxial measuring device it is possible to identify the cut front position during the cutting process. This paper describes the data analysis approach used to determine the cut front position for different feed rates. The cut front position was determined with good resolution, but improvements are needed to make the whole process more stable.
Highlights
Laser cutting is used in processing of flat metal sheets for construction, cutting of pre-formed parts or trimming of hardened 3D parts in several areas of manufacturing
The feed rate can be limited by the insufficient ejection of the melt out of the cut kerf, or by a power demand not covered by the absorbed laser beam power [3]
It is clear that the cut front position changes with different feed rates and has potential to be used as monitored variable to adjust the feed rate during the machine operation to improve the process productivity
Summary
Laser cutting is used in processing of flat metal sheets for construction, cutting of pre-formed parts or trimming of hardened 3D parts in several areas of manufacturing. The feed rate can be limited by the insufficient ejection of the melt out of the cut kerf, or by a power demand not covered by the absorbed laser beam power [3]. This lead to the possibility of monitoring the cutting phenomena “in process” (at real time) to make possible the selfoptimization for the generations of laser cutting machines. The point of interest for monitoring is the melting point, named cut front position This cut front position changes with different operational parameters as feed rate, laser power or laser focus position
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