Predictive and experimental research on the polishing slurry consumption model for ultrasonic vibration-assisted polishing of optical glass BK7

In the actual production process, people usually focus on the machining accuracy and machining efficiency, ignoring the production costs and environmental problems caused by the excessive amount of polishing slurry. Polishing slurry plays an important role during the ultra-precision polishing process, which is often overused so that better surface quality being obtained. However, when the amount of polishing slurry exceeds a threshold, the surface quality would not be significantly improved. Meanwhile, excess polishing slurry can cause environmental pollution and unnecessary waste. In this paper, a new calculation method was proposed, and a novel predictive model of polishing slurry consumption was established to calculate the consumption of polishing slurry in the deterministic polishing. Ultrasonic atomization (UA) was introduced into ultrasonic vibrationassisted polishing (UVAP), and the effects of UA on material removal mechanism (MRM) have taken into consideration. The effect of different machining parameters on the amount of polishing slurry was analyzed. Subsequently, a series of experiments were carried out under three different the flow rate of the polishing slurry (small, appropriate, and excessive) with various ultrasonic amplitudes. The experimental results indicate that the amount of polishing slurry in the deterministic polishing can be accurately calculated by the proposed model, and the maximum consumption of polishing slurry can be reduced by 22.17%. The predictive model of the flow rate of polishing slurry fills the gap and it contributes to the realization of green production, which is an important guidance for the actual production.