基于分形理论的不锈钢钻削仿真与实验研究  

Simulation and experimental study of stainless steel drilling based on fractal theory

作　　者：姜月 李金乐 卞玲玲 周磊 聂超 崔振美 JIANG Yue;LI Jinle;BIAN Lingling;ZHOU Lei;NIE Chao;CUI Zhenmei(Zhuzhou Cemented CarbideCutting Tools Co.,Ltd.,Zhuzhou 412000,Hunan,China;State Key Laboratory of Cemented Carbide,Zhuzhou 412000,Hunan,China)

机构地区：[1]株洲钻石切削刀具股份有限公司,湖南株洲412000 [2]硬质合金国家重点实验室,湖南株洲412000

出　　处：《农业装备与车辆工程》2025年第2期146-151,共6页Agricultural Equipment & Vehicle Engineering

摘　　要：为深入分析切削参数对奥氏体不锈钢切削力的影响,采用有限元仿真对不同切削速度和不同进给下的钻削过程进行模拟,运用分形理论对仿真结果的轴向力和扭矩进行分形维数计算,分析不同切削速度和不同进给对轴向力和扭矩及其分形维数的影响,并通过试验与仿真结果进行对比分析。结果表明:轴向力与进给呈正相关,随着切削速度的增大略有增加,但增长速率较小;扭矩随着进给的增加呈增大的趋势,不同切削速度下扭矩差值较小;当进给为0.06 mm/r,切削速度为100 m/min时,扭矩和轴向力的分形维数最小,其钻削过程最稳定;试验与仿真结果变化趋势一致,轴向力和扭矩最小误差分别为1.3%、11.8%,用分形维数表征钻削过程的稳定性具有可信度。In order to gain a deeper understanding of the impact of cutting parameters on the cutting force of austenitic stainless steel,finite element simulation was employed to simulate the drilling process under varying cutting speeds and feeds.This was done using fractal theory to calculate the fractal dimension of the axial force and torque of the simulation results.The objective was to analyse the influence of different cutting speeds and feeds on the axial force and torque,as well as their fractal dimensions.Furthermore,the results of the tests were compared with those of the simulation.The results demonstrated that the axial force was positively correlated with the feed and exhibits a slight increase with the rise in cutting speed,though the growth rate was relatively modest.The torque demonstrates an increase with the increase in feed,and the discrepancy in torque was minimal under disparate cutting speeds.The optimal combination of feed and cutting speed for the most stable drilling process was 0.06 mm∕r and 100 m∕min,respectively.The variation trend of the test and simulation results was consistent,and the minimum errors of axial force and torque were 1.3%,11.8%,respectively.These findings lend credibility to the characterisation of the stability of the drilling process in terms of the fractal dimension.

关 键 词：切削力 扭矩 有限元仿真 分形维数 频谱法 

分 类 号：TG52[金属学及工艺—金属切削加工及机床] TP391.9[自动化与计算机技术—计算机应用技术]