车刀几何参数对高温合金切削力的影响规律研究
2018-12-20
作者：杨文，雷学林，李东鹏，喻展祥，李冠群
单位：华东理工大学
摘要：为了降低高温合金切削过程的切削力，采用有限元仿真与切削试验相结合的方法，研究了车刀的几何参数（前角、后角和刀尖圆弧半径）对高温合金切削力的影响规律；试验发现：在几何参数的研究范围内，随着刀具前角、后角和刀尖圆弧半径的增大，刀具切削力均呈现逐渐减小的趋势；由此获得切削力最小时的车刀几何参数：前角约4°，后角约14°，刀尖圆弧半径为1.2mm。
关键词：有限元；高温合金；刀具几何参数；切削试验
中图分类号：TG712；TH161文献标志码：A
Study on Effect of Turning Tool Geometrical Parameters on
Cutting Forces in Superalloy Machining
Yang Wen，Lei Xuelin，Li Dongpeng，Yu Zhanxiang，Li Guanqun
Abstract:In order to reduce the cutting force in the cutting process of hightemperature alloys，the finite element simulation method combined with the cutting experiment was used to study the effects of the geometric parameters of the turning tool (front and rear corners and arc radius of the tip) on the cutting force of the superalloy.The experimental results show that:within the scope of the study of geometrical parameters，the cutting force of the tool gradually decreases with the increase of the rake angle，the relief angle，and the arc radius of the tool tip；therefore，the tool geometry parameters is obtained when the cutting force is minimal.(front angle of about 4°，back angle of about 14°and tip radius of 1.2mm).
Keywords:FEM；superalloy；tool geometric parameters；cutting experiment