Основной каталог Winstar 2021 - страница 519

• How to calculate Ød ,RPM and Feed Formula :

DTS 60° DTS 90° Vc × 1000 RPM = Ød × π Feed = RPM × Fr

Ød ≒ (0.577 × (ap + r) + 0.05) × 2 Ød ≒ (0.4r + ap + 0.05) × 2 EX : Working Material : Cast iron Insert : SCGX09T304 Application = 90° Spotting ap = 2.5mm Ød = (0.4r + ap + 0.05) × 2 = (0.4 × 0.4 + 2.5 + 0.05) × 2 = 5.42 mm Reference conditions table get Vc ≒ 85 m/min and Fr ≒ 0.075 mm/rev RPM = (Vc × 1000) / (Ød × π) = (85 × 1000) / (5.42 × π) ≒ 5000 Feed = RPM × Fr = 5000 × 0.075 = 375 mm/min

• Working Demonstration