Structure-Borne Sound Monitoring
Sound propagating in a solid is called structure-borne sound. This sound is used to monitor grinding machine processes. If the grinding wheel touches the workpiece, a structure-borne sound is created. The intensity and frequency of the generated sound depends on various factors: the grinding performance, the type and condition of the grinding wheel, the rpm of the grinding wheel, the workpiece, as well as the workpiece material.
Structure-borne sound monitoring is available in various designs. Elaso offers a suitable sensor for every grinding machine, so that everyone can achieve optimal results.
Application areas
GAP Control
The main application of structure-borne sound monitoring is the so-called GAP control. The acronym GAP stands for Grinding Analysis Process and its task is monitoring and optimizing the grinding process. This product shortens the unwanted air grinding time and yet, the contact between the grinding wheel and workpiece is precisely recorded to initiate the grinding process.
Dressing Control
When dressing the grinding wheel, a similar structure-borne sound signal is generated as during grinding. If this sound is interrupted during the dressing process, it must be assumed, that the grinding wheel still has depressions and thus is not yet properly dressed.
Crash Control
There is a need to predict possible collisions on the machine to minimize or prevent machine damage. This is possible in certain circumstances with structure-borne sound monitoring. It is assumed that a collision causes a strong structure-borne sound. The controller is adjusted so that the output signal can be used for crash detection.