车削毛刺形成有限元仿真研究  

Study on Simulation of Turning Burr Formation Based on Finite Element Method

作　　者：朱云明[1] 黄金桂 王贵成[1] 陈云[2] 

机构地区：[1]江苏大学机械学院,镇江212013 [2]成都工具研究所有限公司,成都610051

出　　处：《系统仿真学报》2015年第5期1120-1126,共7页Journal of System Simulation

基　　金：国家自然科学基金项目(51075192;51305050);国家重大科技专项子项(2013ZX04009031-2/3/4)

摘　　要：根据刀具和工件的相对运动,建立了一种新型机-热耦合车削毛刺形成有限元模型,利用撑板法解决了残留在工件侧面多余塑性变形对运算结果的影响,并大大提高了运算效率。根据车削毛刺形成过程模拟结果的分析,发现了在毛刺形成阶段工件被切削层材料既有弯曲塑性变形又有部分材料被切除的现象。结合AISI1045钢车削试验,对所建立的模型进行了验证,结果表明:车削毛刺尺寸模拟结果和试验结果取得了较好的吻合。该模型的建立为深入研究毛刺形成过程中切削热、切削力、工件材料形变、塑性流动等提供了一条有效的途径。According to the relative motion of tool and workpiece, a new mechanical-thermal coupling finite element model of turning burr formation was established. It adopted supporting plate method to eliminate the influence of workpiece deformation which remained on the workpiece side. Operational efficiency improved greatly under this model. Based on the analysis of simulation results, it is discovered that there are both bending deflection and partly cutting occurred on cutting layer material. AISI1045 steel turning experiment was conducted, it is found that the results of simulation are close to the experimental. The model provides an effective way for analyzing the cutting heat, cutting force, workpiece deformation, stress flow and so on in the process of burr formation.

关 键 词：车削毛刺 撑板法 有限元模型 机-热耦合 

分 类 号：TG51[金属学及工艺—金属切削加工及机床]