基于DEFORM-3D的深孔枪钻切屑成形机理分析
2020-10-16
作者：张小粉1，张宪坤2，白瑀2
单位：1咸阳职业技术学院机电(技师)学院；2西安工业大学机电工程学院
摘要：切屑形态对枪钻深孔加工中孔成型精度影响较大，利用DEFORM3D有限元仿真软件模拟深孔加工中切屑的形成过程、形态和断屑方式，准确复现切屑的形成过程及形态，并计算切屑的曲率与厚度。模拟分析与记录轴向力、扭矩和切削过程温度等参数，揭示出力与扭矩的全过程变化规律，分析得出切削刃温度最高区域、相邻区域的温度分布规律，为切削过程工艺参数的控制提供理论依据。试验与仿真数据对比分析表明，采用有限元分析方法可为枪钻深孔切削过程工艺参数选取和优化提供基本可信的依据，并有效缩减切削试验次数。
关键词：深孔加工；枪钻；切屑形态；仿真分析
中图分类号：TG713.1；TH16文献标志码：ADOI：10.3969/j.issn.1000-7008.2020.03.013
Analysis of Chip Forming Mechanism of Deep Hole Gun Drill Based on DEFORM3D
Zhang Xiaofen，Zhang Xiankun，Bai Yu
Abstract:The chip shape has a great influence on the forming accuracy of the middle hole in the gun drilling deep hole processing.DEFORM3D finite element simulation method is used to simulate the chip formation process，shape and chip breaking mode in the deep hole processing to accurately reproduce the chip formation process and shape，and calculate the chip curvature and thickness.Simulation analysis and recording of axial force，torque，cutting process temperature and other process variables，revealing the torque output variation of the whole process，analysis of the cutting edge temperature maximum area，adjacent areas of the temperature distribution law，for cutting process parameters to provide a theoretical basis for the control.The comparison and analysis of the experimental and simulation data show that the finite element analysis method can provide a basic and reliable basis for selecting and optimizing the technological parameters of gun drilling deep hole cutting process，and effectively reduce the number of cutting experiments.
Keywords:deep hole processing；gun drill；chip morphology；simulation analysis