| 摘要 |
The invention relates to a device for detecting the contact of a tool (2a, 2b) with an electrical conductor (5b) enclosed by an electrical insulation (5a). In order to ensure a reliable, robust, and simple indication of the tool/conductor contact even for potential-free and short cable lengths, the tool (2a, 2b), which is made of electrically conductive material, is fastened to a tool retainer (1a, 1b) made of electrically conductive material. A thin electrical insulation is provided between the tool (2a, 2b) and the tool retainer (1a, 1b) such that said components form a capacitor (CS) together with the coaxial cable. An inductor (La, Lb) is connected in parallel therewith such that an LC oscillating circuit of high quality is formed between the tool and the tool retainer. The electronic circuit assembly excites the oscillating circuit and determines characteristic oscillation parameters of said oscillating circuit. Furthermore, for the cable processing, tool/conductor contacts can be weighted in dependence on contact duration and point in time within the cable-processing process, and thus quantitative production rejection criteria can be determined. |
