【摘要】 以典型难切削金属材料Cr12MoV模具钢为研究对象，使用ABAQUS对其在电火花放电条件下温度场进行数值模拟，在不同进给率下对其进行传统铣削和电火花辅助铣削对比试验。借助高速摄像机、扫描电镜和测力计等设备，对其切削力特征、表面形貌和刀具磨损进行了对比分析研究。结果表明，电火花辅助铣削的切削力比传统铣削降低28.57%～51.47%，表面粗糙度降低2/3。与传统铣削相比，电火花辅助铣削在降低切削力、提高表面质量和减少刀具磨损方面具有显著优势。更多还原

【Abstract】 In this paper,the typical hard-to-cut Cr12MoV die steel is taken as the research object. ABAQUS is used to conduct numerical simulation of the temperature field under electric spark discharge. Experimental results of the traditional milling and electric spark assisted milling are compared under different feed rates. By means of a high-speed camera,scanning electron microscope and dynamometer,the characteristics of cutting force,surface morphology and tool wear are analyzed and studied. The results show that the cutting force of EDM-assisted milling is 28. 57%-51. 47% lower than that of traditional milling,and the surface roughness is reduced by 2/3. Compared with traditional milling,EDM-assisted milling has significant advantages in reducing cutting force,improving surface quality and reducing tool wear.更多还原