A machining apparatus for laser cutting a workpiece, the machining apparatus comprising:
- a device for generating a machining laser beam, for rough machining the workpiece and for producing cuts with cut edges in the workpiece;
- a device for splitting the machining laser beam into at least two energy intensity ranges including a first energy intensity range and at least one second energy intensity range, wherein the first energy intensity range is for rough machining of the workpiece and has a greater time-integrated radiation energy than the at least one second energy intensity range for at least partially fine machining a cut edge;
- wherein:
- the device for splitting the machining laser beam is configured to adjust or select the at least two energy intensity ranges independently of each other,
- the first energy intensity range is a core region of the machining laser beam and the at least one second energy intensity range is at least one edge region of the machining laser beam,
- the first energy intensity range and the at least one second energy intensity range are arranged concentrically, and
- the energy intensity ranges are adapted for rough and fine machining by the device for splitting the machining laser beam, and
- a control unit,
- wherein at least one of the device for splitting the machining laser beam and the device for generating a machining laser beam is connected to the control unit in a wired or wireless data-carrying manner and is controllable with the control unit,
- wherein the device for splitting the machining laser beam is configured to modify a geometry of the cut edge,
- wherein
- the device for generating the machining laser beam includes a machining laser source that has a plurality of laser source modules including at least one first laser source module and at least one second laser source module for generating the energy intensity ranges of the machining laser beam;
- and
- the device for splitting the machining laser beam includes a laser beam transport fibre having a first fibre region which is a fibre core, and at least one second fibre region in a form of a fibre jacket ring;
- wherein
- the at least one first laser source module is configured for generating the first energy intensity range of the machining laser beam and is coupled to the first fibre region of the laser beam transport fibre in a laser light-conducting manner;
- and
- the at least one second laser source module is configured for generating one of the at least one second energy intensity ranges of the machining laser beam and is coupled to each of the further fibre regions assigned thereto in a laser light-conducting manner.