Computer implemented method of and optimisation tool for refinement of laser cutting processing parameters by means of an optimization tool

An optimization tool configured to execute a calculating of optimized machine and material specific process parameters including cutting parameters, for a laser cutting process for cutting a workpiece, being a sheet metal, to be executed on a laser machine having specific machine properties, the optimization tool comprising:

• a property interface configured to receive at least one of determined material of the workpiece and machine properties for which the machine and material specific process parameters are to be optimized;
• a parameter interface configured to receive preconfigured initial process parameters;
• a processor configured to execute a re-optimization algorithm based on a statistical model accessed from a storage, and optimize the machine and material specific process parameters based on the at least one of determined material of the workpiece and machine properties until a target objective function is minimized or maximized;
• an output interface configured to output the optimized machine and material specific process parameters to a controller of the laser machine, wherein the controller of the laser machine configured to control the laser cutting process for the workpiece with the optimized machine and material specific process parameters, wherein the processor comprises:
• I. a controller configured to control execution of test processes with the determined preconfigured initial process parameters;
• II. an evaluation module configured to evaluate the test processes by using a measurement-based algorithm or a preference-based algorithm for determining preferences for the test processes;
• and
• wherein the processor is further configured to re-define a parameter domain for the re-optimization algorithm based on the determined preferences of the evaluation module.

A non-transitory computer-readable medium storing a computer program comprising computer program code, that when executed by a processor, causes an optimization tool to:

• determine at least one of material of a workpiece and machine properties for which process parameters are to be optimized by the optimization tool;
• control a property interface configured to receive the at least one of determined material of the workpiece and machine properties for which the process parameters are to be optimized;
• control a parameter interface configured to receive preconfigured initial process parameters;
• control a processor configured to execute a re-optimization algorithm based on a statistical model accessed from a storage, and optimize the process parameters based on the at least one of determined material of the workpiece and machine properties until a target objective function is minimized or maximized;
• control an output interface configured to output the optimized process parameters to a controller of a laser machine, wherein the controller of the laser machine configured to control a laser cutting process for the workpiece with the optimized process parameters, wherein the processor comprises:
• I. a controller configured to control execution of test processes with the determined preconfigured initial process parameters;
• II. an evaluation module configured to evaluate the test processes by using a measurement-based algorithm or a preference-based algorithm for determining preferences for the test processes;
• and
• wherein the processor is adapted to re-define a parameter domain for the re-optimization algorithm based on the determined preferences of the evaluation module.