Оптимальный выбор Kennametal 2025 - 2026 - страница 248

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HIGH PERFORMANCE HARVI SERIES With Neck Without Neck HARVI III Application Data KCSM15 Recommended feed per tooth (Fz = mm/th) for side milling. Material Group Cutting Speed — Vc D1 — Diameter m/min ap ae Min Max mm 10,0 12,0 16,0 18,0 20,0 25,0 4 ap max 0,4 x D 90 150 Fz 0,054 0,062 0,077 0,083 0,088 0,098 P 5 ap max 0,4 x D 60 100 Fz 0,048 0,056 0,070 0,076 0,081 0,091 1 ap max 0,4 x D 90 115 Fz 0,061 0,070 0,087 0,095 0,101 0,114 M 2 ap max 0,4 x D 60 80 Fz 0,048 0,056 0,070 0,076 0,081 0,091 3 ap max 0,4 x D 60 70 Fz 0,040 0,047 0,057 0,061 0,065 0,071 1 ap max 0,4 x D 50 90 Fz 0,061 0,070 0,087 0,095 0,101 0,114 2 ap max 0,4 x D 25 40 Fz 0,032 0,037 0,046 0,050 0,054 0,061 S 3 ap max 0,4 x D 25 40 Fz 0,032 0,037 0,046 0,050 0,054 0,061 4 ap max 0,4 x D 50 60 Fz 0,045 0,052 0,064 0,069 0,074 0,084 H 1 ap max 0,4 x D 80 140 Fz 0,054 0,062 0,077 0,083 0,088 0,098 NOTE: These guidelines may require variations to achieve optimum results. Lower value of cutting speed is used for high stock removal applications or for higher hardness (machinability) within group. Higher value of cutting speed is used for finishing applications or for lower hardness (machinability) within group. Above parameters are based on ideal conditions. For smaller taper machining centers, please adjust parameters accordingly on >12mm diameter. SOLID END MILLING HARVI III Adjustment Factor for Feed and Speed Calculation Ae/D 2% 4% 5% 8% 10% 12% 20% 30% Speed factor Kv 1,75–3,0 1,33–2,52 1,33–2,1 1,33 1,17 1,15 1,08 1,00 Feed factor KFz 3,28 2,35 2,11 1,69 1,53 1,41 1,15 1,00 phi [°] 16,26 23,07 25,84 32,86 36,87 40,54 53,13 66,42 phi NOTE: For an Ae/D ratio of 5% or less there is a range given for speed factor Kv, which allows the user to either be more conservative at the lower value or more aggressive with the higher value. This can also be considered based on the machinability of the material, from difficult to free cutting. These calculations are for roughing/semi-finishing cuts when used with the recommended base Fz. For light finishing cuts requiring improved surface quality it is recommended to reduce the base Fz approximately 50% and then apply these factors. To calculate application specific cutting data, please use above Kv Calculation example: Final cutting data recommendation: coefficient for adaptation of cutting speed and KFz for feed respectively. Application: D1 = 16,0mm; Vc new = 60 * 1,17 = 70m/min S4 material group; Fz new = 0,064128 * 1,53 = 0,098mm/th Vc new = Vc * Kv Ae 1,6mm (Ae = 10% of D) Fz new = Fz * KFz Cutting data recommendation: Vc = 60m/min; Fz = 0,064mm/th Adjustment coefficients: Kv = 1,17mm; KFz = 1,53 C31 kennametal.com