Каталог Sumitomo монолитные фрезы - страница 20

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Endmills for Hardened Steel GS MILL HARD Series ■ Characteristics GS MILL HARD (Square / Ballnose / Radius) ● With the high-Al content Al-Ti-Cr coating, GS Hard Coat, oxidation resistance is now 3 times higher than the conventional grade at 1,100°C. This improves thermal and wear resistance in ultra-high-speed machining. ● The coating surface roughness is similar to that of the conventional GS Coat, which reduces cutting friction while enhancing smooth cutting. ● Ultra-fine grained carbide substrate with low cobalt content has been newly developed to improve substrate strength. This increases tool durability and prevents the micro- plastic deformation of the cutting edge that occurs during ultra-high-speed machining. ● New unique cross-sectional design promotes better chip evacuation and tool rigidity. ● Hard (Radius) / New endmill series with improved fracture resistance. ● Hard (Ballnose) / Utilizes a new coating with excellent lubricity as well as thermal resistance. Achieves precision finishing of hardened steel, with a precise radial tolerance of +3 to -7μm and a seamless ball-to-periphery profile. Seamless ball-to- periphery profile Side Milling of SKD61 (53HRC) with GS MILL Hard Radius Radius Precision ＋3 to -7μｍ ■ Series ● GS MILL HARD (Square/Ballnose) ● GS MILL HARD (Radius) Type No. of Flutes Shape Diameter (mm) Type No. of Flutes Shape Diameter (mm) GSH 4000SF 4 Flutes GSH 6000SF-R 6 Flutes GSH 6000SF 6 Flutes ø1 to ø20 GSH 8000SF-R 8 Flutes ø6 to ø20 GSH 8000SF 8 Flutes →I66, I67, I68 →I100, I101 GSBH 20000SF 2 Flutes R0.2 to R6.0 →I106 （ø0.4 to ø12） I Coated Endmills ■GS MILL HARD (Square) 160 ●Cutting Performance (6 Flutes, ø10 Side Face Milling) Units (mm) 140 Corner Wear Work Material: SKD61（53HRC） 120 Square Tool: GSH 6100SF（ø10） Flank Wear Cutting Length: 75m Wear (μm) 100 Boundary Wear 2 Flutes Cutting Conditions: vc=800m/min（n=25,460min-1） 80 3 Flutes fz=0.07 mm/（t f=10,500mm/min） 60 4 Flutes ap=10mmࠉࠉ ae=0.2mm Dry (Air Blown), Down Cut 40 6 Flutes 10 20 8 Flutes Radius 0.2 0 GS MILL HARD Competitor's Product Ballnose (Square) DLC SUMIDIA ■GS MILL HARD (Ballnose) Coat ●Application Example(Automotive Component Precision Forging Die) Long Units (mm) Very small wear Neck Work Material: SKH51（62HRC） Uncoated Tool: GSBH 20300SF（R3） GS MILL HARD CBN Cutting Length: Approx. 150m (Ballnose) PCD Cutting Conditions: vc=75m/min（n=4,000min-1） n=4,000min-1 fz=0.075 mm/（t f=600mm/min） Tip is worn flat ap= 0.16mmࠉࠉ pf=1mm 0.16 Competitor’s Product 1 I14