硬态干式切削过程的有限元仿真  

Finite Element Simulating of Hard-dry Cutting Course

作　　者：梁文杰[1] 胡景豫 盆洪民[1] 王宇 刘献礼[1] 

机构地区：[1]哈尔滨理工大学机械动力工程学院,黑龙江哈尔滨150080 [2]海军驻齐齐哈尔地区军事代表室,黑龙江齐齐哈尔161000

出　　处：《哈尔滨理工大学学报》2005年第1期7-10,共4页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金国际合作项目(50210105202)

摘　　要：为研究硬态干式切削过程中切削条件对切削温度的影响规律,以通用有限元软件 MARC为平台,运用局部网格加密技术,建立了PCBN刀具车削GCr15材料的二维热力耦合有限 元模型.模拟结果表明,切削温度随切削速度、切削厚度增大而增大,当切削速度大于220m/min时, 由于金属的软化效应,温度升高的趋势随速度的增加而变缓;切削厚度对温度的影响没有切削速度 影响大;用圆弧倒棱代替负倒棱切削有利于降低刀具的最高温度.This study simulated the cutting course of PCBN tools turning the hardened bearing steel GCr15 by utilizing the general finite element soft Msc. Marc. The simulated model adopted plane stress, coupled heat and stress, and utilized the technique of optimizing partial elements. The result of simulations indicated that cutting temperature increased with the increase of cutting temperature and cutting thickness. When cutting speed is higher than 220m/min, the trend of cutting temperature increase would slow down due to metal softening effect. Cutting speed has more effect on cutting temperature than cutting thickness. And the cutting tool with round cutting edge instead of the first face has lower temperature.

关 键 词：硬态切削 有限元仿真 切屑形状 PCBN 刀具 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]