Общий каталог Yamawa 2022 - 2023 - страница 560

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Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools JIS ⑤ Cemented Carbide Tap Series Overall Thread Thread + Neck Shank Size of Length oflengthlengthlengthdia.squaresquareLℓℓnDsKℓk JIS ① UH-CT Carbide taps for ultra hard materials ② Specification Coating <1.5D ③ Recommended Tapping Speeds depending on Materials Thermal refined steels 調質鋼 〜5 ④ (m/min)50〜63HRC Product Features ●The UH-CT is designed for tapping SKD and pre-hardened steel 50HRC to 63HRC (Max 63). ●It is produced from a ultra fine grain cemented carbide with superior abrasion ⑤ resistance and impact resistance. ●The UH-CT has an improved shank roundness accuracy. ●Recommended tapping length is "Major diameter size x 1.5" or less 5P chamfer for better tool life. ●For the bored hole diameter, the maximum minor diameter of a 6H internal thread diameter maximum value is recommended. ⑥ Tapping DataTapping Conditions [Ｍ8×1.25] Tool Life 80 Workpiece Material ＳＫＤ１１hardened material (60 HRC) Bore Diameter φ６．９ UH-CT 60 60Holes Tapping Length １6ｍｍ through hole 40 Standard Tapping Speed １．５ｍ/ｍｉｎ（６０ｒｐｍ） Carbide hard Tap. 8 HolesＮ-CT 20 ⑦ Machinery Type ＣＮC rigid tapping machine 0 10 20 30 40 50 60TappingFluidNon-water soluble cutting oilNumber of tapped holes. 0 10 20 30 40 50 60 UH-CT Ｎ-CT （Number of threads tapped.） The figure above is a comparison of the number of tapped holes using a standard carbide tap (N-CT) and a The figure above shows the relationship between the carbide tap in SKD 11 high hardness quenched steel at 60 HRC. The N-CT tap, had chipped flutes at number of tapped holes and the load meter (%) of ⑧ 8 holes. Compared to the N-CT, the UH-CT was able to process 60 holes in ultra high hardness steel. It is the machine when machining tests are conducted upimportant to watch for a dull drill as it will cause the taps flutes to wear prematurely. The drilling isto 60 holes with UH - CT tap. The numerical value processed at a 6m/min. cutting speed and a 0.04mm/rev. feed which can easily cause work hardening. of the load meter tends to increase as the number of tapped holes increase at 50 completed threads. The cutting edge damage at this point causes the load ＊Bored hole in this test was prepared by using a carbide drill under such condition as could cause no meter to raise quickly beyond 50 tapped holes. As work-hardening. (cutting speed: 6m/min, feed 0.04m/rev.) the number of tapped holes progresses further, the ⑨ risk of tap breakage is considerable and the load willincrease, so it is recommended to set the life expectancy at a safe level considering the high hardness of the steel being processed. Selection of hole diameter (reference) Product system table  Unit：mm Unit：mm JIS6H（Level 2） JIS6H（Level 2） SLow Tapping Speed Fast ⑩ Internal Thread Dimeter Internal Thread DimeterThreadHoleThreadHoleSizeSizeHoleHoleSizeSizeHoleHoleWork pieceMaterial1m/min Work piece3m/min5m/min6m/min15m/minMaterial Size Size Size Size 60HRC 60HRC （Max） （Min） （Max） （Min） High 55HRC UH-CT 55HRC High M2 ×0.4 1.65 1.679 1.567 M12×1.75 10.4 10.441 10.106 hardness hardness material 55HRC 55HRC material M2.5×0.45 2.11 2.138 2.013 M12×1.5 10.60 10.676 10.376 EH-CT 45HRC 45HRC M2.6×0.45 2.21 2.238 2.113 M12×1.25 10.90 10.912 10.647 Tempered 45HRC 45HRC Tempered ⑪ M3 ×0.5 2.56 2.599 2.459 M14×2 12.1 12.210 11.835 material 25HRC ※ Please use UH-CT,  EH-CT with complete EH-HTM4×0.73.403.4223.242M14×1.512.6012.67612.376Tool steelSKS・SKD  synchronous feed.Alloy steelSCM・SCrEH-PO25HRCmaterialSKS・SKDTool steelSCM・SCrAlloy steel M5 ×0.8 4.30 4.334 4.134 M16×2 14.1 14.210 13.835 1m/min 3m/min 5m/min 6m/min 15m/min M6 ×1 5.10 5.153 4.917 M16×1.5 14.60 14.676 14.376 * Please use synchronous type tooling for UH - CT / EH - CT. M8 ×1.25 6.90 6.912 6.647 M18×2.5 15.7 15.744 15.294 M10 ×1.5 8.60 8.676 8.376 M18×1.5 16.60 16.676 16.376 M10 ×1.25 8.90 8.912 8.647 M20×2.5 17.6 17.744 17.294 JIS M20×1.5 18.60 18.676 18.376 ⑤-27 Meter（％）Load