Solving for vibration problem of grinding block holder of polishing machine grinding head and experiments

In order to investigate the influences of vibration frequencies of grinding block holder on tile fragmentation and grinding efficiency, combined with a given example of prevalent applied large size swing-style tile polishing grinding block holder, the holder of polishing grinding block was simplified as a cantilever beam. Natural frequency of transverse vibration of the grinding block holder was obtained, according to the finite difference equations of grinding block holder. K was revised by extrapolation method. By sample analysis, natural frequency of transverse vibration of the grinding block holder is 5.68Hz. It will produce resonance when the spindle frequency and grinding block holder frequency of the step come closer, the resonance is the main reason of tile fragmentation. The results were verified through experiments. The spindle frequency can be controlled within 8.7Hz range. As a result, high grinding efficiency, low tile fragmentation can be achieved.