R2 R1 HF UNI - Variable Helix and unequal pitch - Corner radius CUTTING PARAMETERS INFO HF943 Material GroupISO 513 P1 P2 P7 K1 P3 P4 M1 K2 K3 P5 M2 M3 K4 S1 S4 S2 S3 S5 Hardness/Rm ≤700 N/mm² 600÷1000 N/mm² ≤35 HRC ≤40 HRC ap x ae 2D x 0.1D 2D x 0.1D 1.5D x 0.1D 1.5D x 0.1D Vc (m/min) 140÷160 100÷120 70÷90 40÷60 D fz(mm)(mm/z) fz(mm/z) fz(mm/z) fz(mm/z) CARBIDEDRILLS TROCHOIDAL 4 0.034 0.031 0.027 0.037 PU-HPU 5 0.044 0.040 0.035 0.048 TA-4HTA 6 0.054 0.049 0.043 0.059 SUH 8 0.064 0.058 0.051 0.070 ALH 10 0.076 0.068 0.061 0.084 HRC 12 0.086 0.077 0.069 0.095 SUH MINI 16 0.098 0.088 0.078 0.108 HL 20 0.132 0.119 0.106 0.145 HSD C-SD-TA ap x ae ≤ D5 1.5D x 0.1D 1.5D x 0.1D 1.2D x 0.05D 1.2D x 0.05D 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. ae R1 Cutter radiusR2Half of slot width HSSDRILLS T Programming width of cut ae Actual width of cut LFTA SUTA 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 HF942 PARAMETERS. 425