Bystronic Laser Ag

Titus Haas

Simon Scheidiger

Michael Berger

Andreas Luedi

Roland Bader

Markus Steinlin

Andreas Lüdi

Michael Held

Alexandre Paradzinets

Christoph Fahrni

Elio Ingold

Daniel Borer

Stefan Kaltenbach

A control unit for calculating a spatially and time-resolved, combined setpoint data set for control of a laser cutting process includes a measurement data interface for accessing sensor data during the cutting operation, a process interface to a first memory that stores a process model that estimates status data of the laser cutting process and a cutting result, a machine interface to a second memory in which a machine model is stored which represents a kinematic behaviour of the laser cutting head and estimates status data of a movement process and the cutting result thereof, and a processor that executes an algorithm that couples the process model and the machine model via a feed rate value and/or via a nozzle spacing value. The processor accesses the process model and the machine model in order to calculate the spatially and time-resolved, combined setpoint data set with coordinated setpoints.

Method, control unit and laser cutting system for combined path and laser process planning for highly dynamic real-time systems

A control unit for providing control instructions for controlling a laser cutting machine by determining transition phases for transforming different dynamic laser beam shapes for the laser cutting machine, for dynamically varying the shape of the laser beam is disclosed. The control unit includes a cutting plan interface for receiving a cutting plan for cutting out parts of a workpiece that are each defined by a cutting segments ordered in a queue, an allocation tool configured to allocate a specific dynamic laser beam shape to each cutting segment, a transition tool for determining transition phases between each two consecutive specific dynamic laser beam shape, and a processor configured for determining a specific dynamic laser beam shape for each cutting segment and for determining all transition phases between each two consecutive specific dynamic laser beam shapes and for providing controlling the laser cutting machine for executing the received cutting plan.

Determination of transition phases for transforming different dynamic laser beam shapes for a laser cutting machine

A control unit for determining a dynamic laser beam shape for controlling a laser cutting machine, which is provided with a dynamic beam shaping module for varying the shape of the laser beam. The control unit includes a cutting plan interface, which is configured for receiving a cutting plan, an interface to a shape storage with a stored set of dynamic laser beam shapes, in particular more than two, and a processor which is configured for automatically calculating for each of the cutting segments an allocation to a dynamic laser beam shape of the set of dynamic laser beam shapes, wherein calculating the allocation is based on the property indicator of the workpiece and is specific for the respective cutting segment. The processor is further configured for providing control instructions for controlling the laser cutting machine by applying the determined dynamic laser beams shapes for each cutting segment specifically.

Automatic determination of a dynamic laser beam shape for a laser cutting machine

In one aspect, the present invention relates to a control unit (RE) for calculating a spatially and time-resolved, combined setpoint data set (SW-DS) for open- and/or closed-loop control of a laser cutting process during laser cutting with a laser cutting machine (L), wherein a processor (P) is intended to access a process model (PM) in a first memory (SI) via a process interface (P-SS) and a machine model (MM) in a second memory (S2) via a machine interface (M-SS) in order, on the basis of an estimated status data of the laser cutting process and the movement process, to calculate the spatially and time-resolved, combined setpoint data set (SW-DS) with coordinated setpoints for the laser cutting process and setpoints for the movement process, taking into account the read-in sensor data.

Cutting a workpiece and producing workpiece parts are disclosed. The device has a cutting head with laser beam optics with a dynamic laser beam movement unit. A cutting head movement unit moves the laser beam over the workpiece. A control unit has a determination module to determine a movement trajectory of the laser beam, a memory unit from which at least one predetermined parameter selected from a movement parameter of the cutting head movement unit, a movement parameter of the laser beam movement unit and a parameter of a deviation of a cut contour from a predetermined contour is retrievable, and an optimization module for adjusting the movement trajectory by overlaying the movement of the laser beam via the cutting head with a high frequency beam-shaping movement of the laser beam via the laser beam movement unit based on the at least one predetermined parameter.

Device and method for laser cutting a workpiece and producing workpiece parts

In one aspect, the present invention relates to a computing unit (RE) for executing a conversion algorithm, having an interface (UI) for acquiring a first cutting parameter data set (SP); and having a processor (P) which is designed to extract a movement profile object (bpo) and which is also designed to execute a conversion algorithm that is stored in a memory of the electronic computing unit (RE) so that it can be loaded and/or executed to calculate and provide the second cutting parameter data set (SP) to the acquired first cutting parameter data set (SP), wherein the second cutting parameter data set (SP) is calculated as a function of the extracted movement profile object (bpo).

Method, computer program and laser cutting system for smart corner cutting

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.

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Zofingen, Switzerland

Titus Haas