数控加工参数对FDM成型精度影响研究

Research on the Influence of Prototyping Precision of CNC Parameters on FDM

为了提高熔融沉积成型(FDM)打印件的表面质量,提出利用数控加工方式对FDM工艺成型件进行表面加工的后处理方法。采用正交试验法,分别研究主轴转速、进给速度和切削深度等数控加工参数对FDM工艺成型件的表面加工误差和表面粗糙度的影响。结果表明,通过数控加工可以有效提高FDM工艺成型的精度。当主轴转速为600r/min,切削深度为0.4mm,进给速度为0.1mm/min时,加工误差达到最小值0.01mm。当进给速度为0.1mm/min,切削深度为0.4mm,主轴转速为400r/min时,表面粗糙度达到最小值1.824μm。

In order to improve the surface quality of the Fused Deposition Molding（FDM） print, the post-processing method of NC machining for the part was proposed. The effects of the spindle speed, the feed rate and the cutting depth on the machining error and the surface roughness were researched by the orthogonal experiment method. The results show that the precision of FDM can be improved effectively by NC machining. When the spindle speed is 600r/min, the cutting depth is 0.4mm and the feed rate is 0.1mm/min, the machining error reaches the minimum of 0.01mm. When the feed rate is 0.1mm/min, the cutting depth is 0.4mm and the spindle speed is 600r/min, the surface roughness reaches the minimum of 1.824μm.