刀片磨损及解决办法

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,*,*,Flank wear,后刀面磨损,Abrasive wear due to carbides,speed,hard skin,改进方法,降低切削速度,逐步加大走刀量,采用更耐磨的刀片材料或涂层,充足的冷却液,采用顺铣的方法,原因,切削速度太高,进给量太低,刀具耐磨性不好,快速的后刀面磨损会使表面质量 变差,圆刀片,http:/www.dao- wear,前刀面的月牙洼磨损,Diffusion between insert and work piece material,原因,前刀面上过高的切削温度引起扩散磨损,过度的月牙洼磨损会降低切削刃强度。,2,Built-up edge,积屑瘤,Work piece material welded to the cutting edge,积屑瘤引起表面质量变差，当积屑瘤脱落时会引起切削刃破损,产生原因：低速切削，负前角切削,3,Notch wear,沟槽磨损,Oxidation at the depth of cut,沟槽磨损引起表面质量变差或者崩刃,4,主偏角Kr对于沟槽磨损的影响,SNMG,45Kr,SNMG,75Kr,CNMG,95Kr,RCMX-E,45Kr,材料,Inconel,718(46HRC)-,刀片,GC1005-ap2.0mm,fn0.25mm/rev,Vc50m/min-5,time,in,cut,notch,Radial forces,+,+,-,-,5,Plastic deformation,塑性变形,Substantial heat and pressure,切削刃塌下或后刀面凹陷，倒致切削控制差和表面质量差。后刀面磨损会导致刀片崩刃。,塑性变形原因,切削温度太高并且压力太大,选用更高的抗塑性变形能力的硬牌号,切屑刃塌下：降低切削速度,后刀面凹陷：降低进给,6,Chipping,刃口的破损,Application too demanding for the chosen insert,切削刃的细小破损导致表面质量变差和过度的后刀面磨损,7,原因,积屑瘤,牌号太脆,刀片槽形强度太低,8,9,