硬质合金刀具切削各向同性热解石墨磨损机理  

Wear Mechanism of Carbide Tool During Cutting of Isotropic Pyrolytic Graphite

作　　者：王奔[1] 刘东玺 王明海[1,2] 印文典 

机构地区：[1]沈阳航空航天大学航空制造工艺数字化国防重点学科实验室,辽宁沈阳110136 [2]北京航空航天大学能源与动力工程学院,北京100191

出　　处：《机械设计与制造》2015年第9期131-134,共4页Machinery Design & Manufacture

基　　金：国防基础科研计划支持(A3520133004)

摘　　要：针对各向同性热解石墨切削过程中刀具磨损过快的问题,采用硬质合金刀具进行了切削加工试验,研究了切削过程中硬质合金刀具的磨损形式、磨损过程以及刀具磨损对表面加工质量的影响。通过对试验结果的研究分析表明:硬质合金刀具磨损形式为后刀面磨损以及切削刃崩刃破损,刀具磨损机理为磨粒磨损。刀具的有效切削距离仅为250m左右,已加工表面分布着形状和深度大小不一的凹坑,表面加工质量差,硬质合金刀具作为各向同性热解石墨的切削刀具具有一定的局限性。According to rapid tool wear in the cutting process of isotropic pyrolytic graphite graphite, turning of isotropic pyrolytic graphite tests was conducted with carbide tools, including the wear formation of carbide tool, wear process and the effect of tool wear on surface machining quality. Based on the experimental results and analysis, the results show that the carbide tool wear mainly occurred in the flank face and cutting edge chipping blade breakage, which wear forms were abrasive wear. The effective cutting distance of tool is only about 250m, the machined surface distribute many pits, which have different shape and depth. The quality of surface machining was poor, carbide tools as the cutting tool of isotropic pyrolytic graphite has certain limitation.

关 键 词：硬质合金刀具 各向同性热解石墨 磨粒磨损 后刀面磨损 

分 类 号：TH16[机械工程—机械制造及自动化] TH161