MACHINING DATA FOR INDEXABLE INSERT THREADING TOOLS IN 1030 IN 2030 Cutting speed (ft/min) D Gtherweinadde 500-590 600-725 410-495 525-625 Vfm 265-330 330-400 230-300 300-360 dc tWoeorlkzeug 200-265 230-330 400-525 495-660 300-500 360-600 265-400 330-495 320-330 300-400 200-265 320-330 180-230 230-300 430-725 525-885265-660330-755 Feed rate Vfm = fz x (D-dc) xnxZD 330-430 400-525 fz: feed per tooth 230-400 300-600 D: diameter of thread 200-400 230-495 dc: diameter of tool 430-790 525-985 Vfm: feed rate of centerway of tool 360-660 500-755 n: RPM 590-1085 725-1345 Z: no. of teeth 855-955 660-1180 fz = 0.001 mm - 0.005 mm 495-985 590-1120 max. tool dia. < 2/3 thread size 495-985 590-1120 Example: 495-985 590-1120 M30 -> tool dia. : max. .750 mm 495-985 590-1120 495-985 590-1120 495-985 590-1120 495-985 590-1120 495-985 590-1120 495-985 590-1120 495-985 590-1120 495-985 590-1120 100-135 135-165 85-115 100-330 85-115 100-330 85-115 100-330 135-265 165-330 135-265 165-330 135-265 165-330 - - - - - - - - 701