Device and Method for the Ultrasonic Cutting of Workpieces
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorStefan FISCHER
Life of this patent
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Abstract
A cutting guide device for ultrasonic cutting of workpieces is provided. The cutting guide device includes a cutting edge with a cutting edge longitudinal axis held in the cutting guide device, an ultrasound generator which oscillates the cutting edge, a control unit which controls movement of the cutting edge on a cutting path, and a first force measuring device which measures an actual lateral force on the cutting edge transverse to the cutting edge longitudinal axis and transverse to the cutting direction. The first force measuring device sends actual lateral force measurement values to the control unit, which changes at least one cutting parameter based on the measured actual lateral force. A method for using the ultrasonic cutting device is also provided.
Claims12
A cutting guide device for ultrasonic cutting of workpieces, comprising:
- a cutting edge having a cutting edge longitudinal axis configured to be held on a cutting edge holder of the cutting guide device;
- an ultrasonic generator configured to move the cutting edge in an oscillating motion;
- a control unit configured to control movement of the cutting edge on a cutting path in a cutting direction relative to a workpiece to be cut;
- a first force measuring device configured to communicate with the control unit and to measure an actual lateral force acting on the cutting edge transversely to the cutting edge longitudinal axis and transversely to the cutting direction,
- wherein
- the first force measuring device is configured to forward to the control unit the measured actual lateral force measured, and
- the control unit is configured to change at least one cutting parameter based on the measured actual lateral force is a manner which counteracts the actual lateral force.
A method for ultrasonically cutting a workpiece using a cutting guide device, the cutting guide device including a cutting edge having a cutting edge longitudinal axis configured to be held on a cutting edge holder of the cutting guide device, an ultrasonic generator configured to move the cutting edge in an oscillating motion, a control unit configured to control movement of the cutting edge on a cutting path in a cutting direction relative to the workpiece, and a first force measuring device configured to communicate with the control unit and to measure an actual lateral force acting on the cutting edge transversely to the cutting edge longitudinal axis and transversely to the cutting direction, wherein the first force measuring device is configured to forward to the control unit the measured actual lateral force measured and the control unit is configured to change at least one cutting parameter on the based on the measured actual lateral force is a manner which counteracts the actual lateral force, the method comprising the acts of:
- arranging the cutting edge at a cutting start point on the workpiece;
- moving the cutting edge in an oscillating motion generated by the ultrasonic generator in a cutting direction along a predetermined cutting path;
- measuring with the first force measuring device the actual lateral force acting on the cutting edge transversely to the cutting edge longitudinal axis and transversely to the cutting direction;
- communicating the measured actual lateral force from the first force measuring device to the control unit;
- changing at least one cutting parameter controlled by the control unit taking into account the measured actual lateral force.
Dependencies are inferred from the claim text.