超声辅助切削SiCp/Al复合材料棱边缺陷有限元仿真研究  

Finite element simulation study on edge defects in the vibration cutting of SiCp/Al metal matrix composites

作　　者：赵明利[1] 郭秋成 晁政 

机构地区：[1]河南理工大学机械与动力工程学院,河南焦作454000

出　　处：《河南理工大学学报（自然科学版）》2016年第1期95-99,共5页Journal of Henan Polytechnic University（Natural Science）

基　　金：河南理工大学博士基金资助项目(B2012-105)

摘　　要：对超声辅助切削SiCp/Al复合材料棱边缺陷进行了有限元仿真研究,分析了超声激励方式、切削参数对SiCp/Al复合材料棱边缺陷的影响。结果表明:相比于普通切削,超声辅助切削改善其棱边缺陷,其中刀具Y方向振动方式切削显著减小棱边缺陷,次之为椭圆振动方式切削和X方向振动方式切削;超声辅助切削时,大切深不利于形成优良的棱边质量;刀具Y方向振动方式切削下,小范围变化的前角对棱边缺陷几乎没有影响,而X方向振动方式切削下,刀具前刀面的磨损会导致棱边缺陷更加严重。The edge defects of SiCp / Al composites caused by vibration cutting were studied by finite element simulation analysis software,and the effects of an ultrasonic exciting method and cutting parameters were investigated in detail. The research results indicate that： the edges defects in ultrasonic vibration turning compared with those in common turning are improved. In addition,the ultrasonic assisted cutting along the Y direction can remarkably reduce edge defects,followed by the ultrasonic elliptical vibration cutting and ultrasonic assisted cutting in the X direction; with large cutting-depth,the excellent edge quality cannot be obtained easily in the vibration cutting; the influence of narrow changes of rake angles on the edge defects is not obvious in the ultrasonic assisted cutting along the Y direction; however,tool wear will lead to critical edge defects in the ultrasonic assisted cutting along the X direction.

关 键 词：棱边缺陷 超声切削 SICP/AL复合材料 有限元 

分 类 号：TH16[机械工程—机械制造及自动化]