| 主权项 |
1. A crash prevention device for a machine tool for preventing the collision of a moving part of the machine tool, such as a tool, a chuck or tool holder, a machine spindle, or a machining head of the machine tool, with other machine tool parts or with a workpiece in a working area of the machine tool during a movement of the moving part, the crash prevention device comprising:
an isolation mechanism configured to electrically isolate the moving part from at least one of the other machine tool parts or the workpiece; and a detection system comprising:
a high voltage generator having at least a first positive connector and a negative connector, the first positive connector being electrically connected to the moving part and the negative connector being electrically connected to at least the workpiece or to the other machine tool parts, the high voltage generator being configured to generate at the first positive connector and the negative connector DC, AC, or pulsating voltage; anda discharge detection device configured to detect an electrical discharge occurring between the moving part and the workpiece or between the moving part and the other machine tool parts, and upon detecting the electrical discharge, being configured to send a signal to a machine controller of the machine tool to stop or adapt further relative movement of the moving part towards the other machine tool parts or the workpiece. |
