26 Каталог TAEGUTEC 2013 Сменные режущие токарные пластины для металлообработки Стр.26

Каталог TAEGUTEC 2013 Indexable turning inserts Стр. 26 0026 ENG Lab2u

Insert Selection by Workpiece Material Insert Selection by Workpiece Material Check and follow these steps t Material to be machined Check material to be machined and select corresponding page by material group classification 2 I Select required cutting surface speed(m/min) Select the appropriate grade to suit the application cutting speed 3 I Select the required feed rate 4 I Select the required depth of cut Select the appropriate chipbreaker based on feed and depth of cut blue color indicates feed rate range Yellow color indicates depth of cut range The range of FG chipbreaker is CNMG 090304 size All otherr negative inserts with CNMG(M)120408 size Positive inserts is CCMT 09T304 size 5 Consideration should also be given to the material shape as detailed on page 21 6 Select insert style and insert corner radius to suit application Use recommened cutting parameters to start machining if there are no cutting parameters, or if existing parameters are not suitable for tool life or productivity. Turning Formulas Cutting speed (m/min): V =3.14 x D x N /1000 Surface roughness of workpiece (mm): Rmax = f2 / 8r Revolutions per minute N = 1000 x V/3.14 x D Rate of metal removal (cubic cm An in): Q = V x f x ap Feed rate (mm/min): F = f x N Horsepower required at spindle :Ws(Kw)=Q x ks/60 x102 x n Hps(HP)=Wx 0.75 Cutting time (min): T = L / F Horsepower required at motor: Hpm = Hps / E D = Diameter of workpiece(mm) f = Feed rate(mm/rev) L = Length(mm) r = Corner radius(mm) ap = Depth of cut(mm) n = Effidency of machine(typically 0.7-0.85) E = Efficiency of spindle drive(typically 0.45) P = Unit power factor, Horsepower per cubic inch pe minute 26 TaeguTec V MMnrtxrlMCQroip