Method and device for detecting a wear limit or break in the cutting edge of a tool
AssigneeFried. Krupp Gesellschaft mit beschrankter Haftung
InventorKurt Mayer
Life of this patent
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Abstract
A method and arrangement for detecting a wear limit or break in a cutting edge of a machine tool. At least two conductor paths are embedded in the cutting material forming the cutting edge, one of the conductor paths being part of a closed circuit while the other is part of an open circuit. A signal serving to break off the machining process is produced if either the conductor path disposed in the circuit is interrupted or the open circuit is closed by the creation of a conductive connection between the two conductor paths.
Claims18
Method for detecting a wear limit or break in a cutting edge of a tool used in a machining process, the cutting edge being formed of material subject to wear, said method comprising:
- embedding two insulated conductor paths in said cutting material;
- connecting each insulated conductor path to a source of voltage so that one of the conductor paths forms part of a closed circuit and the other of the conductor paths forms part of an open circuit;
- producing a signal for interrupting a machining process if either the conductor path in the closed circuit is interrupted or if the conductor path in the open circuit is closed.
Arrangement for detecting a wear limit or break in a cutting edge of a tool used in a machining process, said arrangement comprising:
- a cutting tool having a cutting edge formed by cutting material subject to wear;
- first and second insulated conductor paths embedded in said cutting material;
- a source of voltage connected to each said conductor path;
- and
- first and second circuit means each for actuating a signal to interrupt the machining process,
- said first circuit means including said source of voltage, a first switch means and said first conductor path connected to form a closed circuit with said voltage source and said first switch means,
- said second circuit means including said voltage source, a second switch means and said second conductor path connected to form an open closed circuit with said voltage source and said second switch means,
- said first switch means being connected for actuating a signal to interrupt the machining process if said first conductor path in the closed circuit is interrupted, and
- said second switch means being connected for actuating a signal to interrupt the machining process if said second conductor path in the open circuit is closed.
Dependencies are inferred from the claim text.