切削SiCp/Al复合材料刀尖圆弧半径对棱边缺陷的影响  

Influence of Tool Corner Radius on Edge Defects in Machining of SiCp/Al Composites

作　　者：杜玉真 周丽[1] 

机构地区：[1]沈阳理工大学

出　　处：《工具技术》2014年第5期45-48,共4页Tool Engineering

基　　金：国家自然科学基金（51175353）

摘　　要：运用有限元软件ABAQUS建立了二维切削有限元模型,模拟了碳化硅颗粒增强铝基(SiCp/Al)复合材料的切削过程。通过切削过程中等效应力的变化分析了棱边缺陷的形成过程,进而研究刀尖圆弧半径对切削时出口棱边缺陷的影响。结果表明,在其他切削条件相同的情况下,棱边缺陷随刀尖圆弧半径的增加而逐渐增大。In this paper, the two- dimensional cutting finite element model was built and the cutting process of the sic particle reinforced aluminium matrix composites SiCp/A1 was simulated by using ABAQUS software. The forming process of edge defects was analyzed through the change of equivalent stress during the cutting process, and then the influ- ence of the tool corner radius on the edge defects at the end of workpiece was discussed. The results show that the edge de- fect is gradually increasing with the increase of the tool corner radius if the other cutting condition is the same.

关 键 词：SICP AL复合材料 切削加工 棱边缺陷 有限元分析 

分 类 号：TG702[金属学及工艺—刀具与模具] TP219[自动化与计算机技术—检测技术与自动化装置]