R2 R1 HF HARD - Unequal pitch - 45° chamfer CUTTING PARAMETERS INFO HF451 Material GroupISO 513 P4 M3 K4 P4 P5 P8 M3 K4 S1 P5 P8 P8 K4 S2 S3 H1 H4 H5 Hardness/Rm 800÷1000 N/mm² 900÷1200 N/mm² 35÷45 HRC ≤55 HRC ap x ae 1.5D x 0.1D 1.5D x 0.1D D x 0.1D D x 0.1D Vc (m/min) 110÷130 80÷100 50÷70 40÷60 CARBIDEDRILLS D fz fz fz fz(mm)(mm/z)(mm/z)(mm/z)(mm/z) 3 0.027 0.024 0.021 0.029 PU-HPU TA-4HTA TROCHOIDAL 4 0.035 0.032 0.028 0.039 SUH 5 0.044 0.040 0.035 0.048 ALH 6 0.052 0.046 0.041 0.057 HRC 8 0.067 0.060 0.054 0.074 SUH MINI 10 0.080 0.072 0.064 0.088 HL 12 0.092 0.083 0.073 0.101 HSD 14 0.103 0.093 0.083 0.114 C-SD-TA 16 0.115 0.103 0.092 0.126 20 0.140 0.126 0.112 0.154 NOTES: Down milling CNC programming is required. “ae” value max 0.2xD - “T” value max 0.1xD. The use of end mill with diameter 30-40% smaller than the width of the slot is recommended. The cutting conditions are based on CNC programming with medium dynamic speed. With lower CNC dynamic speed, use the same cutting conditions or reduce the cutting speed Vc. With higher CNC dynamic speed, reduce the “T” value by approximately -30 -50% and apply the maximum available cutting speed Vc. HSSDRILLS ae R1 Cutter radius R2 Half of slot width LFTA T Programming width of cut SUTA ae Actual width of cut HSS-HSS/CO Y (+) Y X (+) T CARBIDE END-MILLS G2 MDTA HF VH/UP MEF ALU MEX/MH UH/MH HSS END-MILLS CARBIDE BURRS PARAMETERS SUGGESTED WITH HIGH PRECISION WELDON CHUCK AND STABLE MACHINING CONDITION. FOR APPLICATION ON HIGH POWER MILLING CHUCK, PLEASE REFER TO HF450 PARAMETERS. 454