1777 Каталог MITSUBISHI 2020 Режущий инструмент Фрезы Резцы Сверла Пластины Стр.R025

Каталог MITSUBISHI 2020 Режущий инструмент для станков Стр. R025 1777 Lab2u

FORMULAE FOR FACE MILLING CUTTING SPEED (vc) wDC n , . . s vc = (m/min) 1000 vc (m/min): Cutting Speed 7r (3.14) : Pi DC (mm): Cutter Diameter n (min-1): Main Axis Spindle Speed Divide by 1000 to change to m from mm. I . I . I c n DC (Problem) What is the cutting speed when main axis spindle speed is 350min 1 and the cutter diameter is oil 25 (Answer) Substitute 7r=3.14, DC=125, n=350 into the formula. vc =- jr-DC-n 3.14x125x350 1000 1000 The cutting speed is 137.4m/min. = 137.4m/min FEED PER TOOTH (fz) fz (mm/t.) : Feed per Tooth z: Insert Number vf (mm/min) : Table Feed per Min. n (min-1) : Main Axis Spindle Speed (Feed per Revolution fr = z x fz) Feed per Tooth (fz) (Problem) What is the feed per tooth when the main axis spindle speed is 500min'1, number of insert is 10, and table feed is 500mm/min (Answer) Substitute the above figures into the formula, vf 500 Wiper Edge Angle Tooth Mark fz zxn 10x500 The answer is 0.1 mm/t. 0.1 mm/t. TABLE FEED (vf) vf (mm/min) : Table Feed per Min. z : Insert Number vf = fz z n (mm/min) fz (mm/t.) : Feed per Tooth n (min-1) : Main Axis Spindle Speed (Problem) What is the table feed when feed per tooth is 0.1 mm/t., number of insert is 10, and main axis spindle speed is 500min 1 (Answer) Substitute the above figures into the formula, vf = fzxzxn = 0.1x10x500 = 500mm/min The table feed is 500mm/min. CUTTING TIME (Tc) Tc (min) : Cutting Time vf (mm/min): Table Feed per Min. L (mm) : Total Table Feed Length (Workpiece Length: l)+Cutter Diameter: (DC)) d) et) DC (Problem) What is the cutting time required for finishing 100mm width and 300mm length surface of a cast iron (JIS FC200) block when the cutter diameter is 0200mm, the number of inserts is 16, the cutting speed is 125m/min, and feed per tooth is 0.25mm. (spindle speed is 200min 1) (Answer) Calculate table feed per min vf=0.25x16x200=800mm/min Calculate total table feed length. L=300+200=500mm Substitute the above answers into the formula. 500 Tc = 800 = 0.625 (min) 0.625x60=37.5 (sec). The answer is 37.5 sec. R R025 TECHNICAL DATA