Общий каталог Mitsubishi 2020 - 2021 - страница 1294

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y Ramping / Helical Milling a Ramping a Helical Milling Blind Holes, Through Holes Flat Bottom Pitch Pitch (P) (P) APMX RMPX APMX DC DC DC Hole Hole Diameter Diameter Refer to the table below when using .031 inch radius for maximum ramping angle, (DH) (DH) pitch and minimum/maximum hole diameter. Use cutting conditions for slot milling to calculate speed and feed when ramping / helical milling. Ramping Helical Milling (Blind Hole, Flat Bottom) Helical Milling (Through Hole) Cutting EdgeDiameter(iDncCh)MaximumRamping AngleRMPXMinimumDistance L *1(inch)MaximumHole Diameter DH max. *2(inch)MaximumPitchP max.(inch)MinimumHole DiameterDH min.(inch)MaximumPitchP max.(inch) MinimumHole DiameterDH min.(inch)MaximumPitchP max.(inch) .750 14° 2.7 1.42 .51 1.31 .43 .80 .019 1.000 11° 3.4 1.92 .55 1.81 .47 1.30 .157 1.250 7° 5.4 2.42 .43 2.31 .39 1.80 .196 1.500 7° 5.4 2.92 .51 2.81 .47 2.30 .275 2.000 4° 9.4 3.92 .39 3.81 .39 3.30 .275 2.500 2° 18.8 4.92 .23 4.81 .23 4.30 .157 3.000 2° 18.8 5.92 .31 5.81 .27 5.30 .236 4.000 1.5° 25.1 7.92 .31 7.81 .27 7.30 .236 **12 L(=.591"/tan%). Cutters' moving distance until depth of cut reaches .591" at In case corner radius of .031". Other than that, find with the below formula. {(cutting edge diameter DC) - (corner radius) - .008"} x 2 a maximum ramping angle. Note 1) When machining highly ductile materials with ramping angles above, chips could be continuous. In this case, decrease the ramping angle or feed per tooth. L L119 INDEXABLE MILLING