1086 Каталог KORLOY 2016 Металлорежущий инструмент и станочная оснастка ENG Стр.L19

Каталог KORLOY 2016 Инструмент и оснастка Стр. L19 1086 ENG Lab2u

Types of tool failure and trouble shooting Turning Troubles Causes Solution Cutting conditions Selecting insert grade Tool shape Machine clamping Cutting speed d J Depth of cut Coolant Select harder grade e rade g r er h g u tou t lect Sel Select better heat-impact resistance grade Select better adhesion resistance grade Chip breaker valuation Rake angle s iu radi e s o Z le gl n a e g edg g in tti u c e id Si Cutting edge strength Honing Improving insert precision M class > G class idi igi ri r er ld ol h g n vi rov pr E Clamping workpiece Holder overhang n io rati br vi e in hi ach M Poor precision Unstable machining size Insert precision is variable Workpiece, Separation of tool t \ Cutting edge back thrust is big It’s necessary to adjust because machining precision changes during operation. Flank wear increase t Cutting condition is improper 4 t Poor surface roughness for finishing Criterion of tool life. Weakened cutting force by increasing wear of tool 4 Wet cutting t t Cutting edge chipping 4 4 t t Adhesion, built-up edge t t Wet cutting t Improper cutting conditions t 4 4 Wet cutting Improper tool and shape of cutting edge t Vibration, chattering 4 4 4 Wet cutting t Cutting heat generation Poor machining precision and short tool life by cutting heat Improper cutting conditions 4 4 4 Improper tool and shape of cutting edge t Burr, chipping, nap steel, aluminum (burr) Improper cutting conditions 4 t Wet cutting Wear on the tool, improper shape of cutting edge m t Cast iron (Weak chipping) Improper cutting conditions 4 4 Wear on the tool, improper shape of cutting edge t t Soft steel (nap) Improper cutting conditions t X Wet cutting Wear on the tool, improper shape of cutting edge m t f Increase Decrease :use Correct use Tool life criterion KS B0813 ISO(B8688) Flank 0.2mm Precision light cutting Finishing in nonferrous alloy Tool life criterion Application 0.4mm Machining special steel Complete breakage Machining special steel wear 0.7mm General cutting in cast iron, steel etc Flank wear width VB = 0.3mm Even flank wear of cemented carbides, Ceramic tool width VBmax = 0.5mm Uneven flank wear 1 1.25mm General cutting in cast iron, steel etc Crater wear width KT = 0.06+0.3fmm (f:mm/rev) Cemented carbides tool Depth of crater wear In general 0.05 0.1 mm Criterion by surface roughness 1,1.6,2.5,4,6.3,1%aRa When surface roughness is important (rOOftl Technical Information 19