1088 Каталог KORLOY 2016 Металлорежущий инструмент и станочная оснастка ENG Стр.L21

Каталог KORLOY 2016 Инструмент и оснастка Стр. L21 1088 ENG Lab2u

Milling Features by combination of rake angle Double positive angle Double negative angle Posi - Negative angle Nega - Positive angle A-R(+) AR(-) (U m D IB a General machining of steel, cast iron, stainless steel Machining soft steel that brings about built-up edge easily Machining material having tendency to poor surface roughness As for tough workpiece material It prevents built-up edge to improve surface roughness. Low cutting load and better machinability 1 Weak cutting edge strength. 1 Only single sided inserts are available (No economical). 1 Machine and cutter need enough power and rigidity. 1 Under interrupted cutting condition 1 Roughing ofcastiron and steel Strong cutting edge. Roughing of workpiece that has bad surface condition containing sand, mill scale Double sidedinserts can be applied(Economical). Good chip control. Machine and cutter need enough power and rigidity. Machining difficult to cut material Roughing with deep depth of cut and wide width of cut in steel and cast iron Good chip flow and machinability. Suitable for machining of difficult-to-cut material Un-even partition clamping prevents chattering Only single sidedinserts are available (No economical) Chip flows to center of cutter body Since the chips flows toward the center of cutter. Chips scratch on machined surface. Bad chip flow. No economical Major cutting formulas Workpiece Cutting speed -D-n vc = 766cT (m/min) Cutting speed (m/min) Diameter of tool (mm) Revolution per minute (min-1) Circularconstant (3.14) Feed fz = “z - (mm/t) Feed per tooth (mm/t) Feed per minute (mm/min) Revolution per minute (min-1) Number of tooth Chip removal amount Q- a L vf ap Chip removal amount (cm3/min) Width of cut (mm) Table feed (mm/min) Depth of cut (mm) Power Pc Power requirement (kW) requirement P Qxkc Pkw 60x102xr Php 0.75 H Q kc n Horse power requirement (hp) (mm/min) Chip removal amount (cm3/min) Specific cutting resistance (kgf/mm3) Machine efficiency rate (0.7 0.8) Machining time T Machining time (sec) Lt Total length of table feed 60 X It (mm)(=Lw+D+2R) T v (sec) Lw The length of workpiece (mm) D The diameter of cutter body (mm) vf Table feed (mm/min) R Relief length (mm) True rake angle / Cutting edge inclination angle True rake angle tan(T) = tan(R) x cos(AA) + tan(A) x sin(C) Cutting edge inclination angle tan(l) = tan(A) x cos(AA) - tan(R) x sin(C) Technical Information 21