1094 Каталог KORLOY 2016 Металлорежущий инструмент и станочная оснастка ENG Стр.L27

Каталог KORLOY 2016 Инструмент и оснастка Стр. L27 1094 ENG Lab2u

Endmills Endmill’s shape and names Peripheral Cutting edge The comparison according to number of flute Features of number of flute Affection of number of flute 0iOmm 2 flutes (IFE2i00) 3 flutes (IFE3i00) 4 flutes (IFE4i00) Specification Major features 2 flutes 4 flutes Tool rigidity Torsional rigidity o \ Bending rigidity o Shape i Surface finish Surface roughness o Machining precision o Chip control Chip clogging o Cross section 44mm2 46mm2 48mm2 Chip evacuation o Ratio 56% 58% 61% Grooving Chip evacuation o Advantages Good chip flow Good chip flow High rigidity Grooving o Disadvantages Weak rigidity Dial to measure externa diameter Bad chip flow Surface finish o Usages Side facing, Grooving Side facing, Grooving Side cutting Side facing Multi-functional Medium, finishing Finishing Vibration o -Excellent o-Good The differences between general endmills and high speed endmills General endmills High speed endmills Cross section shape Features Cross section shape Features - Applied for Low speed, High depth of cut, Low feed - Low hardness workpiece(general steel, cast iron) - Applied for high speed, low depth of cut, high feed - Useful for hardened workpiece such as die steel Calculations of cutting condition Ball endmills cutting speed calculation formulas Calculations of Cutting speed vc = x D x n 1000 1000 x vc x D Calculations of feed speed vf= n x fn or n x fz x z vf fn fn = n fz z or vf n x z vc: Cutting speed(m/min) vf n: Circular constant (3.141592) fn D Endmill diameter(mm) fz n Revolution per minute(min-1) z Feed speed(m/min) Feed per revolution(mm/rev) Feed per flute (mm/t) Numberofflute Revolution per minute Cutting speed Feed per tooth Feed per revolution Feed speed Chip removal rate Effective diameter of Ball Endmill vcx1000 Dxn Dxn xn 1000 fz vf zxn fn = fz x z vf = fz x z x n Q = aexapxvf Deff = 2 xJDXap-ap2 Calculation v v v Table Deff = Dxsin Technical Information 27 n vc n