Stone-plastic composite is a relatively new engineering material that is widely used in the decoration industry. Determination of the optimal machining conditions for this composite is important for the manufacturing industry. This work investigates the cutting quality of stone-plastic composite during helical milling with diamond cutters, focusing on the damage mechanism and surface roughness of the machined surface. Response surface methodology was used to model and establish the relationship between surface roughness and cutting conditions. Analysis of variance was adopted to study the significant contributions of each factor and two-factor interactions on surface roughness. An inclined U-shaped waviness was found on the machined surface, with damage patterns of cracking and pitting mainly located in the peaks of the cutting waves. The optimal combination for cutting was found to be a helical angle of 70°, cutting speed of 51.2 m/s, feed per tooth of 0.26 mm, and cutting depth of 0.72 mm; hence, these parameters are proposed for use in industrial stone-plastic composite machining for optimal cutting quality and machining efficiency.

石塑复合材料是一种相对较新的工程材料，广泛用于装饰行业。确定这种复合材料的最佳加工条件对制造业至关重要。这项工作研究了金刚石切割机螺旋铣削过程中石塑复合材料的切割质量，重点研究了机械加工表面的损坏机理和表面粗糙度。使用响应表面方法对表面粗糙度和切削条件之间的关系进行建模和建立。采用方差分析来研究每个因素和两因素相互作用对表面粗糙度的显着贡献。在加工表面上发现了一个倾斜的U形波纹，裂纹和点蚀的损坏模式主要位于切割波的波峰处。发现最佳的切削组合是：螺旋角为70°，切削速度为51.2 m / s，每齿进给量为0.26 mm，切削深度为0.72 mm。因此，建议将这些参数用于工业石塑复合加工中，以获得最佳的切割质量和加工效率。