A peripheral milling operation is performed on the top surface of a rectangular workpart which is 400 mm long and 60 mm wide. The milling cutter, which is 80 mm in a diameter and has five teeth, overchanges the width of the part on both sides.
Cutting speed = 70 m/min, chip load = 0.25 mm/tooth, and depth of cut = 5.0 mm.

Determine:
a) The actual machining time to make one pass across the surface.
b) The maximum material removal rate during the cut.

N = 278.5 rpm

F = 348.15 mm/min

machine time = 10.34 seconds

material removal rate = 33420000 mm³/min

Explanation:

given data

length L = 400 mm

width W = 60 mm

diameter D = 80 mm

no of cutting n = 5

velocity V  = 70 m/min  = 70000 mm/min

chip load P = 0.25 mm/tooth

depth = 5 mm

solution

we know velocity that is express as

velocity V = D N    ........1

N =  

N = 278.5 rpm

and

now we get feed rate in milling operation is

F  n P N

F = 5 × 0.25 × 278.5

F = 348.15 mm/min

and

now we get actual machine time to make 1 pass across surface of worl is

machine time =  

machine time =  

machine time = 0.1723 min = 10.34 seconds

and

max material removal rate during these cut is

material removal rate = A × d × N

material removal rate = 400 × 60 × 5  × 278.5

material removal rate = 33420000 mm³/min

the warning light flashes for a second or two when the engine starts. if it stays on, there's must be something wrong with the coolant. you should never dare to continue driving when the light is on. pull over as soon as possible and shut the engine off.

hope this is what you're talking about