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Copy Mills • M170 ™ Series Additional Application Advice • RD1604.. Selecting the Correct Cutting Values 1. fz depends on the Ap1 and ae values With round inserts, two factors can affect the hm: Ap1 and ae. fz has to be adjusted accordingly. Recommended Starting Feed Rate Values (fz) Related to the Ap1 and ae Values: ae engagement 10% 20% 30% 40% 50% Example application highlighted. 100% Ap1 = 1mm 1,52mm 1,07mm 0,88mm 0,76mm 0,68mm 0,48mm Ap1 = 2mm 1,07mm 0,76mm 0,62mm 0,54mm 0,48mm 0,34mm Ap1 = 3mm 0,88mm 0,62mm 0,51mm 0,44mm 0,39mm 0,28mm Ap1 = 4mm 0,76mm 0,54mm 0,44mm 0,38mm 0,34mm 0,24mm Ap1 = 5mm 0,62mm 0,44mm 0,36mm 0,31mm 0,26mm 0,20mm Ap1 = 6mm 0,54mm 0,38mm 0,31mm 0,27mm 0,24mm 0,17mm Example Cutting Conditions for iC16mm... Insert in Pocketing, up to 3 L/D approximately: TN2505 TN6525 TN6540 feed per tooth fz (mm)/ae>50% insert = RDPX1604M0SN Edge Geometry MM ae>50% Recommended starting Ap1 = 3mm Edge Geometry MH ae>50% Recommended starting Ap1 = 3mm min med max – – – min med max min med max 0,28mm 0,45mm 0,65mm 0,28mm 0,50mm 0,70mm 0,28mm 0,35mm 0,50mm 0,28mm 0,50mm 0,75mm 0,28mm 0,60mm 0,80mm 2. Ap1 and vc corrections depend on L/D ratio With increasing L/D ratios, or overhang, vibrations can occur due to reduced rigidity. To ensure successful application, it is recommended to adjust Ap1 and vc values according to the following table: L % of vc to reduce <2 0% 0% 24 80–95% 20–40% L D L D D Recommended Cutting Conditions • Helical Interpolation from Solid cutter diameter min hole diameter max hole diameter (fl at bottom) Ap1 max per revolution max ramp angle Ap1 max when plunging 32 36mm 48mm 3mm 20° 3mm 50 69mm 84mm 8mm 9,5° 4,8mm 52 73mm 88mm 8mm 8,2° 5mm 63 95mm 110mm 8mm 5,5° 4,7mm 66 101mm 120mm 8mm 4° 4,2mm 80 129mm 144mm 8mm 3° 4,1mm 100 169mm 184mm 8mm 2,4° 4,6mm 125 219mm 234mm 8mm 2,2° 4,4mm M70 Cutter Diameter Hole Diameter widia.com L/D ratio % of Ap1 max to reduce