Fitting shop: filing, sawing, drilling
Workshop and Manufacturing Practices · Engineering
Study notes
Drill a 10 mm hole in mild steel with cutting speed 30 m/min. Spindle RPM = (30 x 4)/10 = 12... wait: RPM = (CS x 1000)/(pi x D) = (30 x 1000)/(3.14 x 10) = 955 RPM. Use cutting oil and peck drilling for deep holes.