Beam machining head and method for beam machining

Abstract

A beam machining head () for beam cutting of a workpiece is provided, having an interface () for an energy beam source () for generating a focused machining energy beam () selected from a particle beam source, a fuel fluid beam source, a plasma beam source and/or a source for electromagnetic radiation; an exit opening () for the machining energy beam bounded by an opening edge (); an optical detector unit () for recording at least one image of an electromagnetic radiation () emitted from the workpiece () through the exit opening into the beam machining head () and induced in the workpiece by the machining energy beam; and a monitoring unit () connected in a data-transmitting manner to the optical detector unit for monitoring a positional relationship between a centre of the emitted electromagnetic radiation and the exit opening, wherein the monitoring unit () has: a first determination module for determining at least one position () of the exit opening in the at least one image; a second determination module for determining at least one position () of the centre of the emitted electromagnetic radiation in the at least one image; and a third determination module for determining the positional relationship between the at least one position () of the centre of the emitted electromagnetic radiation and the at least one position () of the exit opening (). A beam machining device and a method for beam cutting are further disclosed.