300M超高强度钢车削加工试验与工艺参数优化研究  

Study on turning test and optimization of process parameters of 300M ultra high strength steel

作　　者：王永鑫 张昌明[1,2,3] WANG Yong-xin;ZHANG Chang-ming(School of Mechanical Engineering,Shaanxi University of Technology,Hanzhong 723000,China;School of Mechanical and Precision Instrument Engineering,Xi’an University of Technology,Xi’an 710048,China;Shaanxi Provincial Key Laboratory of Industrial Automation,Hanzhong 723000,China)

机构地区：[1]陕西理工大学机械工程学院,陕西汉中723000 [2]西安理工大学机械与精密仪器工程学院,陕西西安710048 [3]陕西省工业自动化重点实验室,陕西汉中723000

出　　处：《陕西理工大学学报（自然科学版）》2019年第4期15-21,共7页Journal of Shaanxi University of Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(51505268);陕西理工大学研究生创新基金项目(SLGYCX1826)

摘　　要：通过对300M超高强度钢进行车削加工,以得到更高车削加工表面质量的同时提升加工效率为主要目的。使用正交试验法对车削三因素(主轴转速n、进给量f、切削深度a p)进行分析研究。以切削力和表面粗糙度作为参评指标,分别进行试验并分析切削参数对参评指标的影响变化趋势。其中,利用直观分析法与方差分析法对切削力进行分析,其次利用极差分析和多元线性回归分析法对加工后表面粗糙度进行分析,最后对车削加工参数进行了多目标遗传算法优化分析。试验结果表明:切削深度对切削力影响变化最为显著;进给量对表面粗糙度影响变化最为显著。最优参数组合为n=813.576 r/min,f=0.128 mm/r,a p=0.1 mm;优化结果为进给力F x=452.8 N,表面粗糙度R a=1.42μm,最大材料去除率Q z=0.981 cm^ 3/min。Through the turning of 300M ultra high strength steel,the main purpose is to obtain higher turning surface quality while improving processing efficiency.The orthogonal test method has been used to analyze the three factors of turning(spindle speed,feed rate,depth of cut).The cutting force and surface roughness has been used as the evaluation indexes,and the influence of cutting parameters on the evaluation indexes is analyzed.Among them,the cutting force is analyzed by means of intuitionistic analysis and variance analysis.Secondly,range analysis and multiple linear regression analysis are used to analyze the surface roughness after machining.In order to ensure the quality of machining surface and improve machining efficiency,multi-objective genetic algorithm optimization analysis has been carried out on machining parameters.The results show that the cutting depth has the most significant influence on the cutting force.The effect of feed on surface roughness is the most significant.The optimal parameter combination is n=813.576 r/min,f=0.128 mm/r,a p=0.1 mm,and the optimized result is F x=452.8 N,R a=1.42μm,Q z=0.981 cm^ 3/min.

关 键 词：超高强度钢 车削加工 切削力 表面粗糙度 参数优化 

分 类 号：TG511[金属学及工艺—金属切削加工及机床] TG712