Общий каталог Yamawa 2022 - 2023 - страница 278

② Spiral Fluted Tap Series for through hole Overall length L Thread length ℓ Thread + Neck ℓn length Shank length ℓs Shank dia. Ds Size of square K Length of square ℓk JIS F-SL Spiral Fluted Taps (for blind hole) ① JIS Spiral Fluted Taps for High Speed Tapping, Through Hole Use (with LH Spiral Flutes) Spiral Fluted Taps (for through hole) ② Specification Coating Spiral Pointed Taps (for through hole) ③ Recommended Tapping Speeds depending on Materials Low carbon steels Medium carbon steels 低炭素鋼 中炭素鋼 15 25 15 25 〜 〜 Hand Taps ( m / min ) ( m / min ) ④ Product Features ●High speed machining is possible with a machine equipped with a fully synchronous feed mechanism. Cemented Carbide Taps ⑤ ●At low speed, the shape and discharge of the chip deteriorate, causing problems. Tapping Data Tapping conditions [M8 × 1.25] Roll Taps Workpiece Material S50C ⑥ Hardness Raw material Bored Hole Shape Through hole Tapping Length 1.5D ～ F-SL Machinery Type M/C Can Continue Special Thread Taps Simple Inspection Tools Tapping Direction Vertical ⑦ Type of Feed Synchronous Competitors PO Tapping Speed 30m/min 0 500 1000 1500 2000 2500 Cutting Fluid Water soluble cutting fluid （Number of holes processed.） Bored Hole Process Drill Pipe Taps Tapped Holes 2,000 holes ⑧ Recommended speed table Slow Tapping Speed Fast Thread Mills Premium Thread Mills Work piece 5m/min 10m/min 15m/min 20m/min 30m/min 50m/min Work piece ⑨ Material Fully synchronous feed area Material Alloy SCM SCM Alloy Steel SCr SCr Steel High High Dies Carbon Carbon ⑩ S45C S45C Steel Medium S45C F-SL HDISL Steel S45C Medium Carbon +PO Carbon Steel S30C PO S30C Steel Low S25C S25C Low Center Drills Centering Tools Carbon Carbon ⑪ Steel SS400 SS400 Steel 5m/min 10m/min 15m/min 20m/min 30m/min 50m/min The above diagram is for the different materials shown. JIS ②-25