陶瓷刀具铣削高密度纤维板的磨损分析研究

摘要

本试验采用TiC增韧A12O3陶瓷木工刀具对高密度纤维板HDF进行逆铣加工,通过Kistler测力仪进行动态切削力测量,通过扫描电镜(SEM)观察陶瓷刀具的前、后刀面的微观结构,利用能谱仪(EDS)对刀具前、后刀面的磨损微区进行了成分及其含量的分析,揭示了陶瓷木工刀具的铣削磨损机理.研究结果表明:陶瓷木工刀具的切削力随着切削速度的增大而减小、随着加工长度的增大而增大;陶瓷木工刀具切削高密度纤维板主要的磨损形式是:崩刃、后刀面磨损,磨损机理主要表现为磨粒磨损和粘结磨损.%The high density fiber inverse milling by TiC toughened Al2O3 ceramic woodworking tool was completed,dynamic cutting force measurement by Kistler dynamometer,observed before and after the ceramic tool flank of the micro structure by Scanning Electron Microscopy (SEM),analyzed the rake and flank surface components by Energy Dispersive Spectrometer(EDS).It reveals the wear mechanism of ceramic milling woodworking tool.The results show that the cutting force of ceramic wood cutting tools decreases with the cutting speed increasing,and it increases with the processing length increases.The primary wear forms of ceramic tool cutting high density fiberboard are chipping,flank wear,the primary wear mechanism is abrasive wear and adhesive wear.