engineering recuitment GATE ME 2023-24 Test Series Production Engineering (Manufacturing) Machining Processes and Machine Tools Different Machining Processes
A 20 mm diameter hole to be drilled in a sheet of thickness 60 mm. The drill rpm & feed were found to be 600 & 0.3 mm/rev respectively. The drill bit has a point angle of 118°. Assuming 3 mm clearance at approach & exit find the total drill time (in seconds).
Enter numerical value using the virtual keypad. Round off where necessary.