Общий каталог Yamawa 2022 - 2023 - страница 832

⑨ Thread Mills / Premium Thread Mills Cutter dia. Dc Overall length L Thread length ℓ Thread+Neck length ℓn Shank dia. Ds JIS PRML Spiral Fluted Taps (for blind hole) ① JIS Z-PRO Premium Thread Mills Spiral Fluted Taps (for through hole) ② Specification <2D Coating Spiral Pointed Taps (for through hole) ③ Hand Taps ④ Product Features  The same PRML can process right and left hand internal threads by using the helical interpolating process. ● ● Because it cuts at the first thread, it won't make the internal threads taper and the internal threads become highly accurate. Cemented Carbide Taps ● When cutting, the load on the tool is small and the tool life is long. ⑤ ● Cutting resistance is reduced by turning the tool counterclockwise and machining it from the top to the bottom with 1 pass cutting. Cutting Data Processing Conditions［9.0P1.75-M12 M12×1.75］ Pitch diameter change graph Workpiece Material SCM440（30HRC） 10.96 New Product Roll Taps PRML ⑥ 10.94 Cutting Speed 100m/min 10.92 Feed per Tooth 0.06mm/t 10.9 Cutting Length 24mm 10.88 NG NG Conventional product * Dimensions Bored Hole Size φ10.3 10.86 without correction 10.84 Longer Number of Passes 1Time Tool Special Thread Taps Simple Inspection Tools 10.82 Life ⑦ Machinery Type Tapping center (BT 30) 10.8 0 100 200 300 400 500 600 700 800 900 Cutting Fluid Water soluble cutting fluid, 20 to 1 dilution (Number of holes processed) Use the internal coolant supply for blind hole applications. Internal Coolant External Coolant Supply Supply Pipe Taps Chips Left in Hole. Surface Ffinish ⑧ Thread Mills Premium Thread Mills ⑨ Instructions Processing Conditions: Use a counterclockwise spindle rotation for a left hand Workpiece Material Cutting Speed Feed per Tooth fz （m/min） （mm/t） cutting tool. Process from top to the bottom like ② 〜 ③. Thermal refined steel 35 ～ 45HRC 40 ～ 100 0.02 ～ 0.05 Dies The program can be created from our web site. Thermal refined steel 25 ～ 35HRC 40 ～ 100 0.03 ～ 0.06 ⑩ Cast Iron FC 40 ～ 100 0.02 ～ 0.05 ① ① ② ② ③ ③ ④ ④ ⑤ ⑤ Ductile Cast Iron FCD 40 ～ 100 0.02 ～ 0.05 Alloy Steel SCM 40 ～ 100 0.04 ～ 0.06 High Carbon Steel S45C ～ 40 ～ 100 0.04 ～ 0.06 Medium Carbon Steel S25C ～ S45C 60 ～ 100 0.03 ～ 0.05 Low Carbon Steel ～ S20C ／ SS400 60 ～ 100 0.03 ～ 0.05 Z Axis Center Drills Centering Tools Back ◇Tool feed speed calculation formula ⑪ to Z Axis center Feed speed (mm/min) = fz x No. of flutes x Revolution speed x (Nominal dia. of internal thread - Cutter dia. (Dc)) / Nominal dia. of internal thread JIS ⑨-3