不同PCBN刀具车削硼铸铁的对比研究  

Comparative research on cutting boron-cast iron with PCBN

作　　者：李启泉[1] 张旺玺[1] 刘书锋 张素梅 

机构地区：[1]中原工学院材料与化工学院,郑州450007 [2]郑州博特硬质材料有限公司,郑州450000

出　　处：《金刚石与磨料磨具工程》2015年第2期63-65,68,共4页Diamond & Abrasives Engineering

摘　　要：使用不同的立方氮化硼刀具材料(PCBN)和刀具结构,在相同加工参数下,对硼铸铁进行切削加工试验,并对比其加工效果。结果表明:同粗粒度的PCBN刀具相比,细粒度的PCBN刀具加工所得的工件表面粗糙度较低,且刀具本身的耐磨性较高;在切削过程中,随着进给量的增大,工件表面粗糙度也增大;PCBN刀具的负倒棱宽度对加工硼铸铁的切削温度和后刀面磨损有较大影响,负倒棱宽度增加,切削温度和刀具磨损增加,而倒棱角度对刀具和切削过程影响有限。Comparative cutting experiments have been carried out on boron cast iron using different cutting materials and structures of polycrystalline cubic boron nitride （PCBN） tool parameters. The results showed that compare PCBN tool had higher wear resistance and wor In addition, incr cutting process. tool in order to 1 d with those of coarse-grained PCBN tool kpiece machined by it had lower surface ro s at the same s, fine-grained ughness value. easing feed rate leads to the increase of surface roughness of the workpiece during the Therefore, it is reasonable to choose lesser negative chamfer width of PCBN cutting ower the cutting temperature and prolong the tool life.

关 键 词：聚晶立方氮化硼(PCBN) 刀具 硼铸铁 

分 类 号：TG74[金属学及工艺—刀具与模具] TG58