To achieve high-efficiency and low-damage machining of silicon carbide fiber-reinforced silicon carbide composites (SiC f /SiC), this study investigates the influence of cubic boron nitride (cBN) trepanning drilling parameters on hole-making damage. By developing a three-dimensional finite element model for single abrasive grain cutting, a four-factor three-level orthogonal experiment was conducted using response surface methodology. The degree of parameter influence was clarified through analysis of variance, and a multivariate regression model for single-grain drilling force was established. The results revealed that increasing drilling speed reduces transverse stress but intensifies normal strain, while both amplitude and frequency exhibit an initial increase followed by a decreasing trend. The significance ranking of the factors is frequency > drilling speed > feed rate > amplitude. The optimized parameter combination (drilling speed: 21 mm/s, feed rate: 0.23 mm/min, amplitude: 3.09 μm, frequency: 20 kHz) reduces the drilling force to 0.51 N, providing a benchmark for process optimization.
Jia et al. (Fri,) studied this question.