Fried. Krupp Gesellschaft MIT Beschrankter Haftung

Fried Krupp

Kurt Mayer

Hans Tack

Volker Richey

Hans-Peter Schneider

A device for the early detection of breaks and/or marginal wear in the cutting edge in machine tools equipped with reversible cutting plates having at least one insulated conductor path embedded in their cutting edge, with the conductor path being in communication with a voltage source and forming part of a circuit for actuating a signal to break off a machining process. The conductor path is part of an alternating circuit which is connected with the voltage source without physical contact. An induction coil disposed in the tool is able to induce a current in a circuit closed within the cutting plate itself and this current is measured by a measuring coil disposed in the tool. In some embodiments, insulated conductor paths in the reversible cutting plate are capacitively coupled with the voltage source without contacting it.

Device for early detection of breaks and marginal wear in the cutting

A tool-mounting assembly includes a tool head having a receiving bore and a basic tool holder having a receiving pin that is shaped for insertion into the bore. The bore has a groove with a sloping surface and the receiving pin includes movably mounted clamping elements having lugs. The assembly also includes a clamping device in the form of a screw with left-handed threads that engage one clamping element and right-handed threads that engage the other, so that the clamping elements can be moved away from each other to force the lugs into the groove and thereby clamp the tool head to the basic tool holder. In another embodiment an axially movable push rod is used as the clamping device to force the clamping elements away from each other.

Tool-mounting assembly having an exchangeable tool head

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.

Growing community of inventors

Essen, Germany

Kurt Mayer