激光加热辅助车削高温合金薄壁件变形仿真及试验研究OA
Simulation and Experimental Study on Deformation of Thin-walled Superalloy Parts in Laser-assisted Turning
机匣件作为航空发动机的重要零部件,是一种典型的薄壁件,其尺寸大、壁薄以及刚性低等特点使得在加工过程中容易发生工件变形、刀具震颤,造成加工精度不达标,以及加工表面质量差等问题.本文建立高温合金常规车削与激光加热辅助车削模型,并通过试验验证了模型的准确性.模型最大误差为10.1%,最小误差为5.5%,平均误差为7.8%,处于可接受范围.然后建立常规车削与激光加热辅助车削薄壁件模型,研究激光加热辅助车削对薄壁件变形的影响.研究结果表明,与常规车削相比,当激光照射温度达到650℃以上时,激光加热辅助车削切削力分别下降了20.2%、19.8%和15.2%.激光加热辅助车削能够降低车削薄壁件过程中的加工变形.与常规车削相比,激光加热辅助车削薄壁件时,加工变形量分别降低了15.6%、12.7%和13.3%.
As an important part of aero-engine,casing is a typical thin-walled part.Its large size,thin wall and low rigidity make it prone to workpiece deformation and tool chatter in the machining process,resulting in substandard machining accuracy and poor surface quality.In this paper,models of conventional turning and laser-assisted turning of superalloys were established by the software ABAQUS,and the accuracies of the models were verified by tests.The maximum error of the models is 10.1%,the minimum error is 5.5%and the average error is 7.8%,which is within an acceptable range.Then,models of conventional turning and laser-assisted turning of thin-walled parts were developed to study the effect of laser-assisted turning on the deformation of thin-walled parts.The results of the study show that compared with conventional turning,the cutting forces of laser-assisted turning decreased by 20.2%,19.8%and 15.2%respectively when the laser irradiation temperature reached 650°C or more.The machining deformation of thin-walled parts can be reduced in laser-assisted turning.Compared with conventional turning,the machining deformation of thin-walled parts in laser-assisted turning is reduced by 13.5%,11.2%and 10.4%respectively.
孔宪俊;刘世文;侯宁;郑耀辉;王明海
沈阳航空航天大学,辽宁 沈阳 110000
激光加热辅助车削高温合金薄壁件
laser-assisted turningsuperalloythin wall parts
《航空科学技术》 2024 (002)
75-80 / 6
航空科学基金(2019ZE054005);中国航发自主创新基金(ZZCX-2019-019);沈阳市科技局计划项目(RC210439)Aeronautical Science Foundation of China(2019ZE054005);Air China Development Independent Innovation Fund(ZZCX-2019-019);Shenyang Young and middle-aged Talents Project(RC210439)
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