引用本文:
【打印本页】   【HTML】   【下载PDF全文】   【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 74次   下载 71 本文二维码信息
码上扫一扫!
分享到: 微信 更多
高速切削GH4169高温合金时的残留变形及切削力仿真
卜居安1,黄树涛1,于晓琳1,许立福1
沈阳理工大学汽车与交通学院,沈阳 110159
摘要:
应用ABAQUS有限元分析软件建立了高速切削镍基高温合金GH4169的二维切削仿真模型,对切削过程进行了模拟,获得了切削过程中的应力变化及分布情况、切削速度和切削深度对切出端应力分布、残留变形及切削力的影响。研究结果表明:在切削过程不同的切削阶段中第一变形区的最大等效应力大小总体变化不大;切削速度对工件切出端应力分布的影响不大,切削深度增大使得较大应力分布面积明显增大;刀具切出工件后在工件切出端处会形成塑性延伸变形,塑性延伸长度在切削速度较低时较大,而在切削速度较大时较小且变化不大,塑性延伸长度随着切削深度的增加而增加;切削分力Fx随切削速度和深度的增大而增大,Fy随切削深度的增加而有所增大,但切削速度对Fy的影响较小。切削深度对Fx的影响较切削速度更大。
关键词:  高速切削  镍基高温合金  应力分布  变形  切削力
DOI:10.12044/j.issn.1007-2330.2019.05.006
分类号:TG506.1
基金项目:国家自然科学基金资助项目 51775356;辽宁省特聘教授资助项目;辽宁省教育厅高等学校基本科研项目 LG201710国家自然科学基金资助项目(No.51775356);辽宁省特聘教授资助项目;辽宁省教育厅高等学校基本科研项目(No.LG201710)
Simulation of Residual Deformation and Cutting Force in High Speed Cutting of GH4169 Nickel-Based Superalloy
BU Juan1,HUANG Shutao1,YU Xiaolin1,XU Lifu1
School of Automobile and Communications,Shenyang University of Technology,Shenyang 110159
Abstract:
A two-dimensional cutting simulation model of high speed high temperature alloy GH4169 was established by using ABAQUS finite element analysis software,and the cutting process was simulated.The stress change and distribution in the cutting process,the effects of cutting speed and cutting depth on stress distribution,residual deformation and cutting force at cutting end were obtained.The results show that the maximum equivalent stress of the first deformation zone varies little in different cutting stages of the cutting process.The cutting speed has little influence on the stress distribution at the cutting end of the workpiece.The larger stress distribution area increases obviously with the increase of cutting depth.Plastic extension deformation will be formed at the cutting end of the workpiece after the cutter cut out of the workpiece.When the cutting speed is low,the plastic extension length is large,while when the cutting speed is high,it is small.The plastic extension length increases with the increase of cutting depth.The cutting force Fx increases with the increase of cutting speed and depth.The cutting force Fy increases with the increase of cutting depth,but cutting speed has little effect on Fy.The effect of cutting depth on Fx is greater than cutting speed.
Key words:  High speed cutting  Nickel-based superalloy  Stress distribution  Deformation  Cutting force