1282 Каталог KORLOY 2020 Инструмент и оснастка для станков по металлу Стр.L22

Каталог KORLOY 2020 Инструмент для станков по металлу Стр. L22 1282 Lab2u

Milling O Values of specific cutting resistance Workpiece Tensile strength Specific cutting resistance according to various feed kc(MPa) (Kg/mm) ana hardness 0.1 (mm/t) 0.2 (mm/t) 0.3 (mm/t) 0.4 (mm/t) 0.6 (mm/t) Soft steel 52 220 195 182 170 158 Medium carbon steel 62 198 180 173 160 157 High carbon steel 72 252 220 204 185 174 Tool steel 67 198 180 173 170 160 Tool steel 77 203 180 175 170 158 Chrome manganese steel 77 230 200 188 1 75 1 66 Chrome manganese steel 63 275 230 206 1 80 1 78 Chrome molybdenum steel 73 254 225 214 200 1 80 Chrome molybdenum steel 60 218 200 186 1 80 1 67 Nickel Chrome molybdenum steel 94 200 180 168 160 150 Nickel Chrome molybdenum steel HB352 210 190 176 170 153 Cast steel 52 280 250 232 220 204 Hardened cast iron HRC46 300 270 250 240 220 Meehanite cast iron 36 218 200 175 160 147 Gray cast iron HB200 175 140 124 105 97 Brass 50 115 95 80 70 63 Light alloy (Al - Mg) 16 58 48 40 35 32 Light alloy (Al - Si) 20 70 60 52 45 39 Rated horse ... . . power Workpiece r 5Hp 10Hp 20Hp 30Hp 40Hp 50Hp Soft 32 75 163 295 425 570 Steel Medium 26 55 127 212 310 425 hard 18 41 93 163 228 310 Cast iron Soft 52 116 260 455 670 880 Medium 32 75 163 295 425 570 hard 26 55 127 212 310 425 Bronze Brass Soft 77 163 390 670 980 1,280 Medium 54 118 275 490 700 910 hard 26 55 127 245 325 425 Aluminum 90 195 440 780 1,11 0 1,500 O Selection of MILL-MAX diameter (D) Selection by machine rigidity Machine horse power (PS) 10 15 15 20 Proper cutter body specification (mm) 0 10 01 i co 0 0125 0160 Over 20 0160 0200 Selection by machine rigidity Workpiece E 5 Steel +20° -10° 3 2 Cast iron Under +50° 5 4 Light alloy Under +40° 5 : 3 D: External diameter of cutter body D1: Width of workpiece d: Projected part of cutter body E: Engage angle 5: Ratio of cutter body and width of workpiece (D: D1) Selection by machining time The bigger size cutter the longer machining time O Chip removal amount (cm3/min) per rated horse power Selection by number of tooth Workpiece Steel Cast iron Light alloy Number of tooth Dx (1-1.5) Dx (1-4) Dx1+a ex) D = 0100 4" x(1 1.5) = 4 6 D is the size of cutter body converted into inch size O Classification of surface roughness Type Symbol How to calculate Maximum height Rmax The distance between the top of profile peak line and the bottom of profile valley line on this sampled portion is measured in the longitudinal magnification direction of roughness curve ( Expressed by unit: p) Exclude extraordinary values (too small or big) that look like grooves or mountains +10 point mean roughness Rz Sampled from the roughness curve in the direction of its mean line, the sum of the average value of absolute value of the highest profile peaks and the depths of five deepest profile valleys measured in the vertical magnification is expressed by micro meter ( p) Arithmetic mean roughness Ra Sampling only the reference length from the roughness curve in the direction of mean line , taking X-axis in the direction of mean line and Y-axis in the direction of longitudinal magnification of this sampled part and is expressed by micro meter ( p) Generally, Read measured value by Ra measurer Measured value 1 fa ' I , 41J213: Measuring length s 3 2 4 22 Finish mark ww vw vv v Surface roughness Rmax 0.8s 6.3s 25s 100s Rz 0.8z 6.3z 25z 100z Unspecified Ra 0.2a 1.6a 6.3a 25a Technical Information