切削仿真中刀具切入点位置对切削力的影响研究  

Study on Influenceof Tool Entry Point Position on Cutting Force in Cutting Simulation

作　　者：邵恒昆 邓月诚 高洁[1,2,3] 杨旭[1,2,3] Shao Hengkun;Deng Yuecheng;Gao Jie;Yang Xu

机构地区：[1]中国科学院沈阳自动化研究所 [2]中国科学院机器人与智能制造创新研究院 [3]辽宁省智能检测与装备技术重点实验室

出　　处：《工具技术》2023年第5期111-114,共4页Tool Engineering

基　　金：中国科学院战略性先导科技专项(C类)(XDC04000000);国家自然科学基金面上项目(62073312);辽宁省“兴辽英才计划”项目(XLYC2002055)。

摘　　要：针对变深度切削过程的切削力仿真准确性开展研究,结合金属材料的本构特征及切削仿真有限元网格的属性,分析了刀具切入点改变时其对切削力仿真结果的影响,研究表明:刀具切入点位置在网格交界处时的切削力和刀具切入点在网格中点处的切削力存在差异,且垂直于刀具切削方向和水平于刀具切削方向的差异程度不同。在此基础上,使用ABAQUS作为仿真软件,以45钢作为验证材料对分析所得结论进行验证,建立了三维切削仿真模型并进行切削仿真,仿真结果与分析一致,证明了分析的正确性。在进行变切削深度的加工仿真时,应注意刀具轨迹与网格相对位置以提高仿真结果的准确性。The accuracy of cutting force simulation in variable depth cutting process is studied.Combined with the constitutive characteristics of metal materials and the properties of finite element meshes,the influence of cutting tool entry point on the simulation results of cutting force is analyzed.The conclusion is that there are differences between the cutting force when the tool entry point is located at the grid junction and the cutting force at the midpoint of the grid,and the difference is different between the cutting direction perpendicular to the tool and the cutting direction horizontal to the tool.On the basis of the analysis,ABAQUS is used as the simulation software,and 45 steel is used as the verification material to verify the conclusion.A three-dimensional cutting simulation model is established and the cutting simulation is carried out.The simulation results are consistent with the analysis,which proves the correctness of the analysis.The relative position of the tool path and the grid should be paid attention to in order to improve the accuracy of the simulation results in the machining simulation of variable cutting thickness.

关 键 词：切削力 有限元仿真 刀具切入点 网格分析 ABAQUS 

分 类 号：TG707[金属学及工艺—刀具与模具] TH16[机械工程—机械制造及自动化] TP391.7[自动化与计算机技术—计算机应用技术]