Method and system for controlling an ultrasound generator of a machine tool for machining a workpiece
AssigneeDMG MORI Ultrasonic Lasertec GmbH
InventorsHeiko Marx, Viktor Dolinger, Fabian Franzmann
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Abstract
The invention relates to a system and a method for controlling an ultrasound generator of a machine tool for generating ultrasound for machining a workpiece. According to the invention, a determined phase shift of the ultrasound is analyzed as a function of frequency and, based on the analysis, a regulation algorithm for controlling the frequency of the ultrasound generated by the ultrasound generator is determined.
Claims10
A method for controlling an ultrasound generator of a machine tool for generating ultrasound for machining a workpiece, comprising the steps of:
- generating electrical signals with different frequencies for machining a workpiece, the frequencies being in the ultrasonic frequency range;
- applying ultrasonic waves to a tool by means of the electrical signals;
- determining a phase shift of the ultrasound as a function of frequency;
- analyzing the phase shift as a function of frequency;
- determining a regulation algorithm for controlling the frequency of the ultrasound generated by the ultrasound generator depending on the analysis of the phase shift;
- and
- regulating the frequency of the ultrasound generated by the ultrasound generator in dependence of the phase shift of the ultrasound and of the determined regulation algorithm.
A system for controlling an ultrasound generator of a machine tool for generating ultrasound for machining a workpiece, comprising:
- an ultrasound generator, which, in operation, generates ultrasonic waves for machining a workpiece;
- a phase determination unit, which, in operation, determines a phase shift of the ultrasound;
- an evaluation unit, which, in operation, analyzes the phase shift as a function of frequency and determines a regulation algorithm depending on the analysis of the phase shift;
- and
- a control unit, which is configured, in operation, to regulate the frequency of the ultrasound in dependence of the phase shift determined by the phase determination unit and of the regulation algorithm determined by the evaluation unit.
Dependencies are inferred from the claim text.