Основной каталог Kyocera 2021 - 2022 - страница 771

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Amount of coolant (ℓ/min) Drilling MagicDrill DRW Toolholder DRW External coolant is not recommended because the amount of chips will be enormous. Use internal coolant. See the graph of “Drill diameter and coolant amount”. Higher output is preferable. What is important is enough torque rather than high spindle rate. See the examples of required power as below. Drill diameter and coolant amount 60 Drill dia. Workpiecematerial Machine Cutting conditions Spindle *Requiredpowerpower 5040 ø75 (2D) 15CrMo4 M/C Vc=130m/min (n=550min-1)f=0.12mm/rev (Vf=66mm/min)22kW60% 30 ø85 (2D) SCM M/C Vc=150m/min (n=560min-1)f=0.1mm/rev (Vf=56mm/min)30kW 85% 20 Measured the amount of coolant which is10discharged after it passes through drill.ø94 (2D)C45 NC lathe Vc=120m/min (n=410min-1)f=0.1mm/rev (Vf=41mm/min)20kW 100% 0 50 60 70 80 90 ø94 (2D) X2CrNi8 10 NC lathe Vc=80m/min (n=270min-1)f=0.2mm/rev (Vf=54mm/min)20kW 40% Drill diameter (mm) * The required power was read on the load meter. During processing, force of deflection is applied to the center of the drill. If the drill is just pulled out from the position where processing is finished, tool markings will be made. To prevent tool markings, perform offset before pulling out the drill. K H· oHwotwo ptorevpernetvtoeonltmtaoroklinmgsarkings 1. Drilling the hole (The spindle revolves) 2. Turn back approximately 0.5 mm (The spindle revolves) Outer Inner edge edge side side Chips are adhering to the bottom when drilling stops. · Without turning back, chips remains adhering to the bottom. · If o set (3) is performed without turning back, the bottom of drill contacts with the inner surface of hole. · Turning back is necessary for blind holes but not for through holes. 3. Stop revolution and perform offset 4. Pull out the drill (The spindle stops) Example of drilling program G90G54G0G43X0Y0Z100.0H10 S477M03 Z2.5M8 Avoid contact G01Z -80.0F48 Z-79.5M19 The spindle Outer Inner X0.2Y0.2 stops at the edge edge Z100.0M9 speci ed position side side * The M code and X and Y moving directions are unique to the equipment. Make a clearance to prevent the tool from contacting when pulling out. (Approximately 0.1~0.2 mm) Tool markings are not made (or are only slight even if made). K101