ENT 152 Computer Aided Manufacturing I Milling Worksheet-SHOW ALL WORK A milling operation is to be performed at 100 sfpm at .005 ipt. A 500" diameter, 4 flute HSs end mill is to be used. The operation is a slot .100" deep across the diagonal of a rectangular part 4 inches wide and 6 inches long. The material is 4140 medium carbon steel (BHN-250). Use a specific HP of 1.2 HP/in/min. Calculate: RPM feed (ipm) feed (ipr) Cut time MRR c. f. HP required at the spindle

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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ENT 152 Computer Aided Manufacturing I
Milling Worksheet-SHOW ALL WORK
A milling operation is to be performed at 100 sfpm at .005 ipt. A 500" diameter, 4 flute HSs
end mill is to be used. The operation is a slot .100" deep across the diagonal of a rectangular part
4 inches wide and 6 inches long. The material is 4140 medium carbon steel (BHN-250). Use a
specific HP of 1.2 HP/in/min. Calculate:
RPM
feed (ipm)
feed (ipr)
Length of cut
Cut time
MRR
a.
c.
b.
f.
HP required at the spindle
HP required at the motor (assume the drive system is 809%
efficient)
C.
d.
h.
Transcribed Image Text:ENT 152 Computer Aided Manufacturing I Milling Worksheet-SHOW ALL WORK A milling operation is to be performed at 100 sfpm at .005 ipt. A 500" diameter, 4 flute HSs end mill is to be used. The operation is a slot .100" deep across the diagonal of a rectangular part 4 inches wide and 6 inches long. The material is 4140 medium carbon steel (BHN-250). Use a specific HP of 1.2 HP/in/min. Calculate: RPM feed (ipm) feed (ipr) Length of cut Cut time MRR a. c. b. f. HP required at the spindle HP required at the motor (assume the drive system is 809% efficient) C. d. h.
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