车削刀具偏心距的有限元仿真与试验研究  

Finite Element Simulation and Experimental Research of Turning Tools Eccentricity

作　　者：罗胜[1,2] 胡自化[1] 陈长贵 杨志峰 

机构地区：[1]湘潭大学机械工程学院,湖南湘潭411105 [2]株洲钻石切削刀具股份有限公司,湖南株洲412007

出　　处：《硬质合金》2016年第4期238-244,共7页Cemented Carbides

摘　　要：以螺钉夹紧SCLCR2020K09型号车刀为研究对象,采用marc有限元软件分析偏心距e取值对可转位车刀刀杆和螺钉静态及动态切削时应力、应变和变形量的影响,揭示了偏心距e变化对车刀刀杆和螺钉应力、应变和变形的影响规律:车刀刀杆和螺钉所受应力、应变和变形量有随偏心距增大而增大的趋势,仿真得到e=0.15 mm和e=0.2mm时应力应变和变形量变化较平缓,是该型号车刀较好的偏心距值。在此基础上进行了车削实验,比较了各偏心距下刀片的寿命和磨损情况。实验结果表明:在e=0.1 mm、e=0.15 mm、e=0.2 mm、e=0.25 mm和e=0.3 mm偏心距下,e=0.15 mm和e=0.2 mm时刀具可获得最长的寿命,确定最优偏心距为e=0.15 mm和e=0.2 mm,与有限元仿真结果相一致。Based on screw clamping type of turning tool grade No. SCLCR2020K09, the influences of the eccentricity e value on the stress, strain and deformation of the shank and screw for the indexable turning tool during cutting were analyzed and revealed by using Marc finite element software. With the increase of eccentricity, the stress, strain and deformation of the shank and screw show increasing trends, through the simulation the stress, strain and deformation change more evenly when e=0.15 mm and e=0.2 mm, which are superior eccentricity values for the turning tool grade. On the basis of simulation the turning experiment was carried out, the service life and wear condition of the blade under different eccentricity value,such as e=0.1 mm, e=0.15 mm, e=0.2 mm, e=0.25 mm and e=0.3 mm, were compared. The experimental results show that when e=0.15 mm and e=0.2 mm, the turning tools have the longest service life, which is corresponded with the results of the finite element simulation.

关 键 词：螺钉夹紧 偏心距e 有限元 车削试验 

分 类 号：TG51[金属学及工艺—金属切削加工及机床]