Краткий справочник по резанию материалов на металлообрабатывающих станках TECHNICAL DATA

Краткий справочник по резанию материалов на металлообрабатывающих станках TECHNICAL DATA

Краткий справочник по резанию материалов на металлообрабатывающих станках TECHNICAL DATA _ FORMULAE FOR FACE MILLING CUTTING SPEED (vc) 7T DC n . . . . vc = rrrr (m/min) 1000 vc (m/min): Cutting Speed jt (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 (Problem) What is the cutting speed when main axis spindle speed is 350min"1 and the cutter diameter is 0125 (Answer) Substitute 7r=3.14, DC=125, n=350 into the formula. 7T DC n 3.14x125x350 DC vc: 1000 1000 The cutting speed is 137.4m/min. = 137.4m/min FEED PER TOOTH (fz) fz (mm/tooth): Feed per Tooth z: Обозначение сменной режущей пластины Insert Number vf (mm/min) Table Feed per Min. n (min-1) Main Axis Spindle Speed (Feed per Revolution f zxfz) Feed I I Direction I Feed per Tooth (fit) (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 fz = \ Wiper Edge Angle Tooth Mark zxn 10 500 The answer is 0.1 mm/tooth. 0.1 mm/tooth TABLE FEED (vf) vf (mm/min) Table Feed per Min. z Обозначение сменной режущей пластины Insert Number vf = fz z n (mm/min) fz (mm/tooth): Feed per Tooth n (min'1) Main Axis Spindle Speed (Problem) What is the table feed when feed per tooth is 0.1 mm/tooth, 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)) DC A (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. Tc = 0.625 (min) 0.625x60=37.5 (sec). The answer is 37.5 sec. Mitsubishi Materials 1991 TECHNICAL DATA