Общий каталог Yamawa 2021 - страница 623

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Center Drills Intro MHCDS SP Center Drills for Medium Hardness Carbon Steel for High Speed machining, HSSCo Coated FEATURES SL Single-ended center drills for high accuracy in center holedrilling. HSS-Co COATING Easy positioning and high precision machining. HSSCo and special coating for long and stable life even on medium hard materials. PO P2 P3 P4 ST Work-materials Carbon andlow alloysteelMediumalloy steel Vc (m/min) 30÷45 30÷45 DC fn (mm/rev) fn (mm/rev) 1 0.10 0.10 WATCHTHE VIDEO 1.5 0.10 0.10 ROLL 2 0.15 0.15 2.5 0.15 0.15 YMW-MHCDS 3 0.15 0.15 4 0.20 0.20 CARBIDE 5 0.20 0.20 6 0.20 0.20 LONG Cutting Data HAND Great extension of tool life with MHCDS TAPS The pictures on the right show the different Cutting Condition damage of MHCDS and a market alternative cutting edge after 480 holes machined at the Size: 3x60°x8 EG (STI) same cutting condition. As shown, the MHCDS Material: Ck60 - 1.1221has smaller wear and edge damage allowingMachine: NC lathe the MHCDS to run much further than a standard Cutting speed: 30m/min center drill. Feed: 0.15mm/rev Lubricant : water soluble oil SPECIAL THREADS, Market alternative MHCDS GAUGES Great improvement in surface roughness and circularity with MHCDS THREADMILLS Enlarged picture Under the cutting condition stated above, the surface finish of center-drilled hole has Circularity of center dril-been greatly improved. Circularity of center drilled hole as well as run-out tolerance ofled 60° face turning axis has been improved. 90 μm Surface roughness of center drilled 60° face 135 45 DIES 180 0 225 315 CENTER 0 0.5 1.0 1.5 2.0 270 DRILLS YMW Technical info 624