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Jun 06, 2026
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Understanding Laser Cutting Head Components and Functions
Explanation of laser cutting head optical components, nozzles, and sensor systems.
The laser cutting head is a precision assembly delivering focused energy while managing gas and distance. The collimating lens converts diverging fiber output to parallel beam, requiring precise alignment.
Focusing lenses concentrate the beam to small intense spots. Shorter focal lengths give smaller spots for thin materials while longer lengths provide depth of focus for thick plates.
Nozzles shape the gas jet. Single-layer suits nitrogen while double-layer optimizes oxygen cutting. Diameter balances consumption against performance.
Capacitive height sensors measure nozzle-to-surface distance in real time, tracking material variations for consistent focus and standoff distance across the entire sheet.
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