Основной каталог Kyocera 2016-2017 - страница 613

Q-5 Tool markings are made on the finished surface. Is there any countermeasure? A-5 During processing, force of deflection is applied to the center of the drill. Tool marking 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. Example of tool marking · How to prevent tool markings (1) Drilling the hole. (The spindle revolves.) (2) Turn back approximately 0.5 mm. (The spindle revolves.) Outer edge Inner edge side side Chips are adhering to the bottom when drilling stops. · Without turning back, chips remains adhering to the bottom. · If offset (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. (The spindle stops.) (4) Pull out the drill Example of drilling program G90G54G0G43X0Y0Z100.0H10 K S477M03 Z2.5M8 Avoid contact G01Z -80.0F48 Z-79.5M19 The spindle stops X0.2Y0.2 at the specified position Outer edge Inner edge Z100.0M9 side side * The M code and X and Y Drilling moving directions are unique to the equipment. Make a clearance to prevent the tool from contacting when pulling out. (Approximately 0.1 to 0.2 mm) Tool markings are not made (or are only slight even if made).  DRW custom-order item Applicable drill dia.: φ22~φ200 BT shank integral type is also applicable Max. φ200 is applicable Straight Shank (1D~3D)  Applicable Inserts Dimension (mm) Angle MEGACOAT MEGACOAT CVD Coated Applicable Insert Description NANO Carbide Toolholders A T φd rε α PR1230 PR1535 CA6535 80° rε 7° WCMT06T308 9.525 3.97 3.7 ● ● ● S50-DRW…-06 φd 0.8 7° WCMT050308 7.94 3.18 3.2 ● (Custom-order A T toolholder) * WCMT050308 is for custom-order (φ22 or larger). K71