SiCp/Al复合材料铣削仿真及实验研究

Simulation and Experimental Study on Milling of SiCp/Al Composites

摘要: 本研究旨在研究PCD铣刀在铣削45% SiC颗粒体积分数(PVFs)的铝基碳化硅(SiCp/Al)复合材料的切削机理，建立了45% PVFs SiCp/Al复合材料二维正交切削有限元仿真模型，研究切削去除过程、表面形貌，分析不同切削参数下切削力的变化规律；采用正交试验方法对有限元模型进行验证，对切削力实验值和仿真值进行偏差分析。结果表明，颗粒破碎、凹坑、基体撕裂是影响表面形貌的重要因素。实验获得的切削力变化及波动与仿真结果一致，偏差均小于20%，验证了有限元模型的有效性，为后续继续研究刀具磨损、工艺优化提供参考。

Abstract: This study aims to investigate the cutting mechanism of the PCD cutting tool when milling SiCp/Al composites with 45% SiCp article volume fractions (PVFs). A two-dimensional orthogonal cutting 45% PVFs SiCp/Al composites finite element simulation model was established to study the cutting re-moval process, surface morphology, and the variation regularity of cutting force under different cutting parameters is analyzed; the orthogonal test method was used to verify the finite element model and the deviation analysis of experimental and simulated cutting force was carried out. The results show that particle fracture, pull-out, and matrix tearing are important factors affecting sur-face morphology. The variation and fluctuation of cutting force obtained by the experiment are con-sistent with the simulation results, and the deviation is less than 20%, which verifies the validity of the finite element model and provides a reference for the subsequent research on tool wear and process optimization.