Основной каталог Kyocera 2021 - 2022 - страница 985

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Applicable end mill MEF11 MEF14 MEF17 MEF20 MEF23 MEF26 MEF29 MEF32 MEF35 MEF39 MEF43 MEF48 Other applications Bolt countersink end mill Recommended cutting conditions Recommended insert grades (Vc: m/min) Workpiece material fz (mm/t) MEGACOAT Carbide PR1225 PR1210 KW10 Carbon steel 0.1~0.15 ★ - - 120~220 Alloy steel 0.1~0.15 ★ - - 120~220 Mold steel 0.05~0.1 ★ - - 100~180 Stainless steel 0.05~0.1 ★ - - 80~180 Cast iron 0.1~0.2 - ★ ✩ 100~220 80~120 Non-ferrous metals 0.1~0.2 - - ✩ 100~300 ★: 1st Recommendation ✩: 2nd Recommendation Points at bolt countersinking 1. Carbon steel Increase the feed rate to fz=0.1 ~ 0.15 (mm/t) for preventing long chips at low feed rates. Chip control is good when setting (Vc=80m/min) for MEF11~MEF25, and (Vc=120m/min) for MEF26~MEF48. Toolholder description Vc(m/min) fz(mm/t) MEF11~MEF25 80 0.1~0.15 MEF26~MEF48 120 0.1~0.15 2. Sticky materials Step feed is recommended for good chip control Increase the feed rate to fz=0.1 ~ 0.15 (mm/t) for preventing long chips at low feed rate (fz=0.05mm/t). Use cover to prevent accidents or injury by thick chips at higher feed rates. Toolholder description Vc(m/min) fz(mm/t) Step feed (mm) MEF11~MEF48 80~150 0.1~0.15 0.5~1.5 M 3. Stainless steel Use a lower cutting speed. high cutting speeds cause chattering. Cutting performance when shouldering Description Cutting range Milling MEF bolt countersink end mill is also recommended of shouldering. ~ MEF11-S12 ap (mm) ae Vc=80~120m/min MEF14-S12 S55C MEF17-S16 MEF18-S16 Dry ap Overhang length: DCX/6 DCX/3 DCX/2 Cutting width: ae(mm) Same as LH in the dimension table MEF20-S16 MEF22-S20 ap (mm) • When shouldering, both side edge and bottom edges function. ~ • Both edges wear at the same time depending on ap. The insert uses MEF25-S20 2 edges instead of 4. (Fig. 1) DCX/6 DCX/3 DCX/2 Cutting width: ae(mm) • MEF type's side edge is designed to have a slight clearance for the countersinking. Therefore, worked side wall is approx. 1˚ inclined against the vertical face. MEF26-S25 (Fig. 2) ap (mm) ~ MEF32-S25 MEF35-S32 約1˚ 1˚1˚ approx. approx. approx. 1˚ (89˚) (89˚) (89˚) DCX/6 DCX/3 DCX/2 Cutting width: ae(mm) MEF39-S32 ap (mm) MEF43-S32 2 edges function MEF48-S32 Fig. 1 Fig. 2 DCX/6 DCX/3 DCX/2 Cutting width: ae(mm) JIS standard of T-slot (Extracted from B0952) (Unit: mm) M213 A H