
GENERAL PURPOSE GOmill APPLICATION DATA GOmill – 3 Flutes – UEDE GOmill – 4 Flutes – UEDE GOmill UEDE • Application Data Recommended feed per tooth (Fz = mm/th) for side milling (A). KC643M For slotting (B), reduce Fz by 10%. Material Group Cutting Speed — Vc A B D1 — Diameter m/min ap ae ae min max mm 2,0 3,0 4,0 5,0 6,0 8,0 10,0 12,0 0 1,5 x D 0,5 x D 1xD 150 200 Fz 0,014 0,022 0,028 0,036 0,044 0,060 0,072 0,083 1 1,5 x D 0,5 x D 1xD 150 200 Fz 0,014 0,022 0,028 0,036 0,044 0,060 0,072 0,083 2 1,5 x D 0,5 x D 1xD 140 190 Fz 0,014 0,022 0,028 0,036 0,044 0,060 0,072 0,083 P 3 1,5 x D 0,5 x D 1xD 120 160 Fz 0,012 0,018 0,023 0,030 0,036 0,050 0,061 0,070 4 1,5 x D 0,5 x D 0,75 x D 90 150 Fz 0,011 0,016 0,021 0,027 0,033 0,045 0,054 0,062 5 1,5 x D 0,5 x D 1xD 60 100 Fz 0,010 0,015 0,019 0,024 0,029 0,040 0,048 0,056 6 1,5 x D 0,5 x D 0,75 x D 50 75 Fz 0,008 0,012 0,016 0,020 0,025 0,034 0,040 0,047 1 1,5 x D 0,5 x D 1xD 90 115 Fz 0,012 0,018 0,023 0,030 0,036 0,050 0,061 0,070 M 2 1,5 x D 0,5 x D 1xD 60 80 Fz 0,010 0,015 0,019 0,024 0,029 0,040 0,048 0,056 3 1,5 x D 0,5 x D 1xD 60 70 Fz 0,008 0,012 0,016 0,020 0,025 0,034 0,040 0,047 1 1,5 x D 0,5 x D 1xD 120 150 Fz 0,014 0,022 0,028 0,036 0,044 0,060 0,072 0,083 K 2 1,5 x D 0,5 x D 1xD 110 140 Fz 0,012 0,018 0,023 0,030 0,036 0,050 0,061 0,070 3 1,5 x D 0,5 x D 1xD 110 130 Fz 0,010 0,015 0,019 0,024 0,029 0,040 0,048 0,056 1 1,5 x D 0,3 x D 0,3 x D 50 90 Fz 0,012 0,018 0,023 0,030 0,036 0,050 0,061 0,070 2 1,5 x D 0,3 x D 0,3 x D 25 40 Fz 0,006 0,010 0,013 0,016 0,019 0,026 0,032 0,037 S 3 1,5 x D 0,3 x D 0,3 x D 25 40 Fz 0,006 0,010 0,013 0,016 0,019 0,026 0,032 0,037 SOLID END MILLING 4 1,5 x D 0,5 x D 1xD 50 60 Fz 0,008 0,013 0,016 0,021 0,026 0,037 0,045 0,052 H 1 1,5 x D 0,5 x D 0,75 x D 80 140 Fz 0,011 0,016 0,021 0,027 0,033 0,045 0,054 0,062 NOTE: 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. GOmill Series Adjustment Factor for Feed and Speed Calculation Ae/D 2% 4% 5% 8% 10% 12% 20% 30% 40% 50% 100% Speed factor Kv 2,1—3,6 1,6—3 1,6—2,5 1,6 1,4 1,38 1,3 1,2 1,1 1 0,9 Feed factor KFz 3,58 2,56 2,3 1,84 1,67 1,54 1,25 1,09 1,02 1 1 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 Kv coefficient table Calculation example: Final cutting data recommendation: to the right for adaptation of cutting speed and KFz for feed respectively. Application: D1 = 12mm; Vc new = 150 * 1,4 = 210mm/min P4 material group; Fz new = 0,062 * 1,67 = 0,103mm/z Vc new = Vc * Kv Ae 1,2mm (Ae = 10% of D1) Fz new = IPT * KFz Cutting data recommendation: 150m/min; Fz = 0,062mm/z Adjustment coefficients: Ae = 1,2mm equals 10%; Kv = 1,4; KFz = 1,67 kennametal.com C72