GFRP铣槽加工铣削力及表面粗糙度研究

铣槽是复合材料较常用的机械加工形式之一。为研究玻璃纤维增强复合材料(Glass Fiber Reinforced Plastic,GFRP)铣槽加工中各加工参数对铣削力和表面粗糙度的影响,开展了以主轴转速、进给速度和轴向切深为因素的正交试验,研究铣削力和表面粗糙度的变化规律。并用Matlab软件对铣削力和表面粗糙度的试验数据进行回归分析,建立了铣削力和粗糙度的经验公式,最后通过试验验证铣削力和表面粗糙度经验公式的正确性。结果表明:轴向切深对铣削力影响最大,其次是主轴转速,进给速度对铣削力影响最小;主轴转速对粗糙度的影响最大,其次是进给速度,轴向切深对粗糙度的影响最小。试验结果与铣削力、表面粗糙度经验公式算得的数值对比,误差范围都在20%以内。

Research on Milling Force and Surface Roughness of GFRP in Slot Milling

Slot milling is one of the most common mechanical operations for machining composite materials. Experi-ments were carried out in order to investigate the milling force and surface roughness during GFRP milling. An orthogonal exam was designed to explore the influence of machining parameters (spindle speed, feed rate and depth of cut) on milling force. Matlab is used to analyze the experimental data of milling force and surface roughness. After regression analysis, the milling force and surface roughness regression equations are established. Finally, the correctness of the milling force and sur-face roughness regression equations is verified by experiments. The results show that depth of cutting has a greatest influence on milling force, while the influence of feed rate is small; spindle speed has a greatest influence on surface roughness, while the influence of depth of cutting is small. And the error range of the milling force and surface roughness is within 20%.