Computer-aided optimization of numerically controlled machining of a workpiece
AssigneeSiemens Aktiengesellschaft
InventorsDirk Hartmann, David Bitterolf, Hans-Georg Köpken, Birgit Obst, Florian Ulli Wolfgang Schnös, Sven Tauchmann
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Abstract
In order to be able to take into account machining configurations more flexibly, a method for optimizing numerically controlled machining of a workpiece includes ascertaining geometric interaction data. A relationship between a force to be expected and a configuration parameter of the machining is determined on the basis of the interaction data. The force is calculated during the machining on the basis of the relationship and a current value of the at least one configuration parameter. The machining is adapted depending on the calculated force.
Claims20
A method for computer-aided optimization of numerically controlled machining of a workpiece with a tool of a machine tool, the method comprising:
- prior to commencement of the numerically controlled machining, determining interaction data that describe a geometric interaction of the tool with the workpiece in a section of a toolpath;
- based on the interaction data, determining a relationship between a force to be expected during the numerically controlled machining and at least one machining configuration parameter;
- calculating the force during the numerically controlled machining based on the relationship and a current value of the at least one configuration parameter during the numerically controlled machining;
- and
- adjusting the numerically controlled machining as a function of the calculated force by correcting the toolpath as a function of one or more stiffness values of the machine tool.
A control system for numerically controlled machining of a workpiece with a tool of a machine tool and for computer-aided optimization of the numerically controlled machining, the control system comprising:
- a first electronic computing device configured to determine interaction data that describe a geometric interaction of the tool with the workpiece in a section of a toolpath, and a second electronic computing device,
- wherein at least one of the first and second electronic computing devices is configured to determine a relationship between a force to be expected during the numerically controlled machining and at least one machining configuration parameter based on the interaction data;
- and
- wherein the second electronic computing device is configured to calculate the force during the numerically controlled machining based on the relationship and a current value of the at least one configuration parameter during the numerically controlled machining:
- to adjust the numerically controlled machining as a function of the calculated force by correcting the toolpath as a function of one or more stiffness values of the machine tool.
A machine tool for numerically controlled machining of a workpiece, comprising:
- a tool for machining of the workpiece, and
- a control system comprising
- a first electronic computing device configured to determine interaction data that describe a geometric interaction of the tool with the workpiece in a section of a toolpath, and a second electronic computing device,
- wherein at least one of the first and second electronic computing devices is configured to determine a relationship between a force to be expected during the numerically controlled machining and at least one machining configuration parameter based on the interaction data;
- and
- wherein the second electronic computing device is configured to calculate the force during the numerically controlled machining based on the relationship and a current value of the at least one configuration parameter during the numerically controlled machining;
- to adjust the numerically controlled machining as a function of the calculated force by correcting the toolpath as a function of one or more stiffness values of the machine tool.
A computer program stored on a non-transitory storage medium and comprising computer-readable commands which, when read into a memory of a computer system and executed by a processor of a control system for numerically controlled machining of a workpiece with a tool of a machine tool and for computer-aided optimization of the numerically controlled machining, causes the control system to:
- prior to commencement of the numerically controlled machining, determine interaction data that describe a geometric interaction of the tool with the workpiece in a section of a toolpath;
- based on the interaction data, determine a relationship between a force to be expected during the numerically controlled machining and at least one machining configuration parameter;
- calculate the force during the numerically controlled machining based on the relationship and a current value of the at least one configuration parameter during the numerically controlled machining;
- adjust the numerically controlled machining as a function of the calculated force by correcting the toolpath as a function of one or more stiffness values of the machine tool.
Dependencies are inferred from the claim text.