摘要
端铣切削难加工材料3Cr1Mo1/4V过程中产生切削高温,导致刀片破损速度加快,使用寿命降低.因此精确控制切削热和准确测量切削温度成为决定此类难加工材料切削性能的关键因素.通过可转位铣刀片断续车削模拟端铣切削的实验方案,利用红外辐射测温法分析切屑自由端表面的温度分布规律,并借助有限元软件的热传导单元获得刀-屑接触区及切屑内部的温度场分布.研究结果表明,断续切削实验方案及有限元模拟可有效用于铣刀片刃前区温度场分析,从切屑一侧研究切削热及切削温度,为优化设计铣刀片槽型,提高刀具寿命和加工效率等奠定基础.
As a kind of difficult-to-cut material, in face milling process of 3CrlMol/4V, high cutting tempera- ture, rapid tool damage make the low service life of the milling insert. Therefore, the key factors in improving the cutting performance of the material are to control the cutting heat and to measure the cutting temperature accurately. The temperature distribution law at the chip＇s free side surface was investigated in this paper through infrared radia- tion measurement method with the interrupted cutting experimental model on engine lathe instead of milling ma- chine. Then, the cutting temperature field at the tool-chip interface and the chip inside was achieved by FEM （fi- nite element method） simulation with the heat conduction elements of the finite element software. The results show that the interrupted cutting experimental method and FEM simulation can be used effectively in temperature field a- nalysis on deformation zone in front of indexahle milling insert. The studies on cutting heat and temperature from the chip side will lay a foundation for the optimization of the milling inserts, prolonging the lifetime and improving the machining efficiency of the cutting tools.
出处
《哈尔滨理工大学学报》
CAS
2012年第3期120-124,共5页
Journal of Harbin University of Science and Technology
基金
国家自然科学基金(50975053)
黑龙江省教育厅科学技术研究项目(12521095)
关键词
可转位铣刀片
难加工材料铣削
红外辐射测温法
切屑自由端表面
indexable milling insert
milling of difficult-to-cut material
infrared radiation temperature meas-urement method
chip＇s free side surface
