Grinding disc noise monitoring system - uses capacitive coupling between rotary sensor and stationary evaluation device

摘要

The grinding disc noise monitoring system uses a sensor attached to the rotating work spindle (5) supplying a signal coupled via a stationary and a relatively rotating capacitor plate, to an evaluation device (13) attached to the housing of the machine. The sensor may be attached to the work spindle (5) for the workpiece (2) for the grinding disc (1), or 2 similar sensors may be attached to both spindles, each providing a signal fed to the evaluation device (13) via a respective capacitive coupling. ADVANTAGE - Noise-free signal transmission for improved sensitivity.