多硬度拼接淬硬Cr12MoV铣削力的有限元分析  

Finite Element Analysis of Milling Force on Hardened Steels Assembled With Different Hardness

作　　者：李刚[1] 孔凡志[1] 王慧强 周浩东 王扬渝[1] 

机构地区：[1]浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室,杭州310014

出　　处：《机械设计与研究》2014年第5期131-135,共5页Machine Design And Research

基　　金：863计划重点资助项目(2009AA044302);浙江省科技计划资助项目(2013C31024);现代制造技术与刀具开发黑龙江省高校重点实验室开放课题(2012DJ-002)

摘　　要：通过初始屈服应力、应变硬化模量等材料特性参数,建立了不同硬度Cr12MoV淬硬钢的Johnson-Cook本构模型,对多硬度淬硬钢的铣削加工过程进行了数值模拟,分析了切削速度、切削深度、工件硬度等因素对铣削力的作用规律,揭示了多硬度拼接淬硬钢的铣削力特征。多硬度拼接淬硬钢铣削加工的实验结果验证了有限元模型的正确性,对于铣削加工参数优化具有一定的指导作用。Using initial yield stress, strain hardening modulus and other materials parameters, a Johnson-Cook constitution model of Cr12MoV hardened steels with different hardness was established. The milling processes of hardened steels with single and different hardness were numerically simulated by Johnson-Cook model. Effects of cutting speed, cutting depth, hardness of the workpieces on cutting force were analyzed, which could further reveal characteristics of milling force with hardened steels assembled with different hardness. Experiment results of milling forces verified the established finite element model was reasonable, which provided a certain guiding significance for optimizing the cutting parameters selection of harden steels assembled with different hardness steel.

关 键 词：铣削加工 多硬度淬硬钢 本构模型 数值模拟 

分 类 号：TH164[机械工程—机械制造及自动化]