**MECHANICAL ENGINEERING**

**PROBLEMS**:

1. The milling work of a cast steel material using a 1 1/2 inches diameter cutter choose between the two available stock. Find the speed of the cutter with a cutting speed of 50 ft per minute, using carbide tipped cutter with a cutting speed of 200 ft per minute.

Solution:

For slow speed cutter;

V = 3.14 DN

N =

__(50 ft per min)(12 inches per ft)__

3.14 (1.5 inches)

= 127 rpm

For high speed cutter;

N =

__(200 ft per minute)__

3.14 (1.5 inches)

= 509 rpm

*answer*

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