基于有限元的深孔镗削仿真及分析

Simulation and Analysis of Deep Hole Boring Based on Finite Element Method

镗削加工是机械加工领域中非常重要的一种加工手段,被广泛应用与大型零件的深孔加工过程中。但是,随着材料科学的发展,越来越多的难加工材料被应用到大型深孔零件制造中,镗削加工过程中的刀具崩刃、后刀面磨损严重等问题出现的概率也越来越高,严重影响正常加工。本文对不同几何参数的镗刀片进行了建模。并运用DEFORM-3D有限元软件,对这些不同几何参数的刀具分别进行了镗削过程的仿真,分析了刀具主偏角和后角对工件表面应力、切削温度、刀具磨损以及切削力的影响。该项研究对实际加工中选取合适的刀具主偏角和后角有非常重要的参考价值。

Boring is a very important processing method in the field of machining.It is widely used in deep hole machining of large parts.However,with the development of materials science,the strength of materials for boring processing is getting larger and larger,and the frequency of problems such as chip chipping and flank wear is becoming higher and higher,which seriously affects normal processing.First,the boring tool with different geometric parameters is modeled.Then,using DEFORM-3 D finite element software,the boring process simulation of these different geometric parameters was carried out.The effects of tool lead angle and back angle on workpiece surface stress,cutting temperature,tool wear and main cutting force are analyzed.This has very important reference value for selecting the appropriate tool lead angle and back angle in the actual machining.