Mechanical Engineering - Production Engineering - Discussion
Discussion Forum : Production Engineering - Section 4 (Q.No. 12)
12.
The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter 6.25 to 25 mm size and at a cutting velocity of 18 m/min is
Discussion:
12 comments Page 2 of 2.
Samarth nawale said:
4 years ago
If 1000*18 and 3.14 is common then why uh putting values,
Simply do,
(25/6.25)^1/n-1.
Simply do,
(25/6.25)^1/n-1.
Mir said:
3 years ago
The speed ration = (Nmax/Nmin)^(1/n-1) = (Dmax/Dmin)^(1/n-1).
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