1036 Каталог KORLOY 2020 Инструмент и оснастка для станков по металлу Стр.G36

Каталог KORLOY 2020 Инструмент для станков по металлу Стр. G36 1036 Lab2u

G Technical Information for TPDB Plus O Recommended Cutting Conditions Workpiece Aspect ratio (L/D) = 3D, 5D Grade vc (m/min) Feed rate (mm/rev) per drill dia. (mm) ISO Workpiece HB 010 016.9 017 026.9 027 032.9 Carbon steel Low carbon steel 80-120 PC5335 PC330P 110(80-140) 0.15-0.30 0.20-0.35 0.25-0.40 High carbon steel 180-280 PC5335 PC330P 100(70-130) 0.15-0.30 0.20-0.35 0.25-0.40 P Low alloy steel 140-260 PC5300 110(80-140) 0.18-0.35 0.23-0.38 0.28-0.43 Alloy steel Low alloy heat treated steel 200-400 PC5300 75(50-100) 0.18-0.35 0.23-0.38 0.28-0.43 High alloy steel 50-260 PC5300 70(50-90) 0.18-0.30 0.20-0.35 0.25-0.40 High alloy heat treated steel 220-450 PC5300 60(40-80) 0.18-0.30 0.20-0.35 0.25-0.40 K Cast iron Gray cast iron 150-230 PC5300 110(80-140) 0.18-0.35 0.20-0.40 0.25-0.45 Ductile cast iron 160-260 PC5300 100(70-130) 0.18-0.35 0.20-0.40 0.25-0.45 In case of 8D, machine in 20-30% lower cutting conditions than the mentioned above, or machine the beginning of hole (1.5D) before drilling. In interrupted machining, reduce the feed to 0.1-0.15 machining around the interrupted part. Prefer to the 'Recommended drilling method' on the page 37 for drilling of 10D-12D O Replacement of Holders and Screws Worn part How to check Description Pic.1 Pic.2 Check the gap In case of drilling for a long time as shown in the Pic.1 the ‘A’ part is torn and twisted due to torque. As shown in the Pic.2 check the gap between the insert and the tip seat turning the clamped insert from side to side. If there is a gap between them, replace the used holder to a new one. Pic.3 Pic.4 Check the moving The insert could move up or down due to the load on the Z-axis in drilling over an extended period of time which causes wear on the ‘B’ part as shown the Pic.3 . After clamping an insert, if the insert is moving or there is a gap between the insert and the tip seat as shown in the Pic.4 replace the used holder to a new one. Pic.5 Check the moving After an extended period of use, the screw can be worn as shown in the ‘E’ part of Pic.5 which could decrease the clamping force of the insert. When the screw is worn, replace the old screw to a new one among the enclosed extras. Spreading the grease on the screw makes it last longer. Pic.6 J. Check the ‘C’ and ‘D’ parts as shown in the Pic.6 Check whether the chips are getting longer or not. Winding or jamming of long and tiny chips in drilling causes wear or scratch on the ‘C’ part as shown in the Pic.6 due to chattering from machining in improper cutting conditions. In that case, reset the cutting conditions and check the Run-out before machining. The excessive wear of the part ‘D’ as shown in the Pic.6 relating to chip curling might cause long chips. Drills 36