grinding force and grinding performance

The grinding mechanism is crucial, and grinding force serves as a significant metric in this context. The study focused on analyzing the grinding force under various grinding parameters through single-grain grinding experiments. A grinding force model for multiple abrasive grains was developed based on the formation of chips. This model was enhanced by incorporating the randomness of grain distribution. Furthermore, the specific grinding energy for different underformed chip thicknesses was determined through scratch tests with individual CBN abrasive grains.

Moreover, a series of grinding tests were conducted under diverse grinding parameters, with the corresponding grinding forces being measured. The findings indicate that the specific grinding energy fluctuates with changes in the undeformed chip thickness. When grinding 45 steel with a ceramic bond CBN wheel, the specific grinding energy stabilizes at 3460 J/mm³ once the deformation cutting thickness hits 50 μm.

Under identical grinding parameters, the calculated values from the grinding force model closely match the experimental data. Further studies have confirmed that the model is particularly suitable for scenarios with small cutting depths, slow feed rates, and low cutting speeds. This research holds substantial value in guiding future studies on the grinding mechanism and in characterizing the grinding force.