【摘要】 为探究微织构对提升刀具切削性能的作用，运用理论分析和仿真分析方法，对椭圆偏置抛物线凸包微织构（elliptic bulge parabolic contour texture,EBPCT）和椭圆偏置抛物线凹坑微织构（elliptic opening offset parabola micro texture,EOOPT）刀具的切削性能进行对比分析，证明EBPCT在提升刀具切削性能方面的优越性。然后运用敏度分析方法，对EBPCT特征参数进行筛选，基于响应面法分析了切削性能随关键参数的变化规律，并以此为基础进行参数优化。结果表明，EBPCT的敏感特征参数包括椭圆长轴、短轴、高度、偏移量、横向间距、刃边距、夹角，且参数优化后的EBPCT刀具的最大等效应力、最高切削温度、主切削力及切深抗力的平均值分别降低了4.45%、3.96%、6.16%和1.52%。更多还原

【Abstract】 To explore the effect of micro-texture on improving the cutting performance of tools, theoretical analysis and simulation methods were employed to compare and analyze the cutting performance of elliptic bulge parabolic contour texture(EBPCT) and elliptic opening offset parabola micro-texture(EOOPT) tools, thereby demonstrating the superiority of EBPCT in enhancing tool performance. Subsequently, sensitivity analysis was employed to screen the characteristic parameters of EBPCT. Based on the response surface methodology, the variation patterns of cutting performance with key parameters were investigated, and on this basis, parameter optimization was carried out. The results show that the sensitive characteristic parameters of EBPCT include the major axis, minor axis, height, offset, lateral spacing, edge margin and included angle of the ellipse. After parameter optimization, the average values of the maximum equivalent stress, maximum cutting temperature, main cutting force and depth resistance of the EBPCT tool are reduced by 4. 45%,3. 96%,6. 16% and 1. 52% respectively, compared to those before optimization.更多还原