895 Каталог KORLOY 2016 Металлорежущий инструмент и станочная оснастка ENG Стр.G70

Каталог KORLOY 2016 Инструмент и оснастка Стр. G70 0895 ENG Lab2u

Technical Information for Mach Long Solid Drill Function of MLD & MLDP Relationship of point angle between MLD & MLDP MLD MLD 1 o Point angle of MLD Point angle X of foundation hole > Stable machining 1 ( ) 1 Hole by MLDP Point angle of MLD Point angle of foundation hole > Chipping on the drill edge Hole by MLDP Large point angle of Pliot Drill Stable condition Small point angle of Pliot Drill Unstable condition To make the optimal of MLD 1st. Pliot drilling vc(m/min) = Normal fn(mm/rev) = Normal 2nd. Deep drilling by MLD Approach the drill 1mm less than the depth of MLDP drilling. vc(m/min) = 15 fn(mm/rev) = 0.5 2nd MLD drilling (Machining stage) vc(m/min) = Normal fn(mm/rev) = Normal 3rd MLD drilling (Piercing stage) vc(m/min) = Normal fn(mm/rev) = Normal feed / 2 Application example Part of automobile SCM440H, HB255 330 Workpiece Cutting condition .1 Designation Machine Tool life Part of automobile Workpiece Cutting condition Designation Machine Tool life vc(m/min) =70 fn(mm/rev)=0.18 MQL(30cc/hour) Air(MPa)=0.7 MLD0600-22A (06mm, Aspect ratio 18D) Horizontal milling machine 1000 holes GC250 vc(m/min) =63 fn(mm/rev)=0.1 water-soluble cutting fluid(3kg/cm2, 21 /min) MLD0400-25A (04mm, Aspect ratio 16D) Rotary milling machine 440 holes Drills 70