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US 12,346,104 B2Granted
Method for determining and correcting the machine state of a machine tool, and diagnostic system
AssigneeTRUMPF Werkzeugmaschinen GmbH + Co. KG
InventorsJens Ottnad, Leonie Felica Tatzel
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Abstract
A method for ascertaining and correcting the defective machine state and/or at least one defective component state of a machine tool includes ascertaining the state using imaging and analysis of a cut edge produced and comparing with selected machine parameters and making the correction by way of a maintenance instruction based on the machine state for maintaining the machine tool.
Claims14
A method for operating a machine tool, the method comprising:
- A) receiving a surface image of a cut edge surface of a workpiece produced by the machine tool operating with selected machine parameters to cut the workpiece;
- B) analyzing the surface image using the data aggregation routine so as to ascertain the actual machine parameters of the machine tool that resulted in producing the cut edge surface, the data aggregation routine comprising a convolutional neural network (CNN), the CNN being configured to ascertain a surface finish from the surface image, and to ascertain the actual machine parameters of the machine tool that produced the surface finish by aggregating a plurality of ascertained data using weighted variables, the plurality of ascertained data corresponding to machine parameters that are known to produce corresponding surface finishes;
- C) obtaining the selected machine parameters that are selected on the machine tool;
- D) comparing the actual machine parameters with the selected machine parameters so as to ascertain a difference between the actual machine parameters and the selected machine parameters;
- E) determining a machine state based on the difference between the actual machine parameters and the selected machine parameters;
- F) determining a maintenance instruction for correcting the machine state based on the determined machine state;
- G) executing the maintenance instruction on the machine tool so that the actual machine parameters for a subsequent cut correspond to the selected machine parameters;
- and
- H) operating the machine tool to perform the subsequent cut.
6 more elements
A system for automatically operating a machine tool, the system comprising:
- the machine tool configured with selected machine parameters, the machine tool configured to cut a workpiece to produce the cut edge surface based on the selected machine parameters;
- and
- an imager module comprising a camera configured to provide a surface image of the cut edge surface;
- and
- a convolutional neural network (CNN), the CNN being configured to ascertain a surface finish from the surface image, and to ascertain actual machine parameters of the machine tool that produced the surface finish by aggregating a plurality of ascertained data using weighted variables, the plurality of ascertained data corresponding to machine parameters that are known to produce corresponding surface finishes,
- wherein the system is configured to:
- use the CNN to ascertain the surface finish and the actual machine parameters;
- compare the actual machine parameters with the selected machine parameters to ascertain a difference between the actual machine parameters and the selected machine parameters;
- determine a machine state based on the difference between the actual machine parameters and the selected machine parameters;
- determine a maintenance instruction for correcting the machine state based on the determined machine state;
- and
- operate the machine tool to perform a subsequent cut, the machine tool having the machine state corrected based on the maintenance instruction so that the actual machine parameters for the subsequent cut correspond to the selected machine parameters.
9 more elements
Dependencies are inferred from the claim text.