A slab-milling operation is performed on a 0.7 m long, 30 mm-wide cast-iron block with a feed of 0.25 mm/tooth and depth of cut of 3 mm. The cutter has a diameter of 75 mm, has 8 cutting teeth, and rotates at 200 rpm. Calculate the cutting time and material removal rate.

a)  

b)  

Explanation:

From the question we are told that:

Cast-iron block Dimension:

Length

Width

Feed

Depth

Diameter

Number of cutting teeth

Rotation speed

Generally the equation for Approach is mathematically given by

Therefore

Effective length is given as

a)

Generally the equation for Machine Time is mathematically given by

Where

Therefore

b)

Generally the equation for Material Removal Rate. is mathematically given by

1

explanation: