A milling cutter is 20 mm in diameter and has FOUR teeth. The cutting speed for the material is given as 10 m/min and the feed is 0,04 mm per tooth.
Calculate the feed in mm/min.

HINT : S = π × D × N and f = fƗ × T × N

S  = π × D × N
N  = S/π × D
    = 10/ π × 0,02
    = 159,2 r/min

f   = fƗ × T × N
    = 0,04 × 4 × 159,2
    = 25,5 mm/min

A milling cutter is 25 mm in diameter and has 4 teeth. The cutting speed for the material is given as 45 m/min and a feed of 0,18 mm per tooth.
Calculate the feed rate in mm/min.

(Hint: S = π × D × N and f = fƗ × T × N)

D  = 25 mm = 0,025 m
S  = 45 m/min
T = 4 teeth
ft  = 0,18

S = π × D × N
N = S/π × D
    = 45/π × 0,025
    = 572,958 r/min

f   = fƗ × T × N
    = 0,18 × 4 × 572,958
    = 412,53 mm/min

A milling cutter is 12 mm in diameter and has two teeth. The cutting speed for the material is given as 25 m/min with a feed of 0,18 mm per tooth.
Calculate the feed in mm/min.

(HINT: S = π × D × N and f = fƗ × T × N)

S  = π × D × N
N  = S/π × D
    = 25/π × 0,012
    = 663,146 r/min

f  = fƗ× T × N
   = 0,18 × 2 × 663,146
   = 238,732 mm/min