The invention provides a three-coordinate
galvanometer scanning
laser processing head, which comprises an XY two-axis
laser galvanometer system, a clamping mechanism, a Z-axis moving mechanism, a
laser displacement sensor and a
control system, wherein the Z-axis moving mechanism comprises a fixed part and a moving part, and the clamping mechanism is fixedly mounted on the fixed part of the Z-axis moving mechanism; and the XY two-axis laser
galvanometer system and the laser displacement sensor are fixedly mounted on the moving part of the Z-axis moving mechanism, and the laser displacement sensor, the Z-axis moving mechanism and the XY two-axis laser galvanometer
system are all electrically connected with the
control system. The
laser processing head has the function of dynamic
focal length setting, and has an independent and compact structure; the
laser processing head has the broach
interface design of a standard numerically-controlled
machine tool, which enables the
laser processing head to be easily assembled for
processing with commercialized multi-axis synchronous numerically-controlled
machine tools of a three-axis type, a five-axis type, and the like; and technological flexibility is greatly enhanced, and a conventional multi-axis synchronous numerically-controlled
machine tool can be conveniently changed into a galvanometer scanning laser
processing machine tool with compatible functions, thereby the three-coordinate galvanometer scanning laser processing head has important practical value.