Каталог ZCC-CT токарная обработка - страница 283

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General Turning Allgemeine Drehbearbeitung TGuenrenrailnTugrn·ingD/Arellghemeenine Drehbearbeitung, ISO Kennzeichnung Application information . Anwendungsinformation No. Toolwear type Situation Reason Countermeasures A Poor surface quality Grade is too soft1+2Flank wearand inconsistentmeasurement. IncreaseCutting speed is too high.Flank angle is too small.in cutting force.Feed rate is too lowSelect grade with higher wearresistanceReduce cutting speedIncrease flank angle.Increase feed rate3Crater wear Bad chip surface control andGrade is too soft.Cutting speed is too high.Feed rate is too high.Select grade with higher wearresistanceReduce cutting speedReduce feed rate Grade is too hard. Feed rate is too high. Select grade with higher Tool life not stable4ChippingSudden breakage ofcutting edgeCutting edge strength notstrong enough toughnessReduce feed rateChange honing of cutting edge The rigidity of holder in Use holder with bigger shank size insuffiecient (vibration) Grade is too hard. Feed rate is too high.5FracturingCutting force increasingSurface roughness andmeasure becomes badCutting edge strength notstrong enoughThe rigidity of holder inSelect grade with higher toughnessReduce feed rateChange honing of cutting edgeUse holder with bigger shank size insufficient Grade is too soft. Inconsistent measure6Plasticmeet.deformation Damage to the cuttingedgeCutting speed is too high. Depth of cut and feed rate high too Grade with high wear resistance. Reduce cutting speed Decrease depth of cut and feed rate. Grade with high thermal conductivity. Cutting temperature is high Poor surface quality Cutting speed is low.7Weldingand inconsistentCutting edge not sharpmeasurement. Increaseenoughin cutting force.Grade not suitableIncrease cutting speedIncrease rake angle.Select grade with lower affinity 8 ThermalCracksBreak due to thermalvariation effect oftencaused when cutting isinterrupted.Expansion or Use dry cuttingshrinkage due to cutting heatSelect grade with higherGrade is too hard.toughness Unstable cutting condition (uncut surface,chilled parts, 9 Notch wear Burr increase of Cutting force information machining hardened layer) Friction caused by jagged shape chips. Grade with high wear resistance.Increase rake angle to improvesharpnessDecrease cutting speed Feed rate and cutting speed too high Mostly happens during Cutting edge welding and10Flakingmachining of high hardadhesion.materials or vibrationBad chip removingIncrease rake angle to improvesharpnessUse chip breaker with wider chippocket 3 6 7 9 51 2 104 8 9 A 282