Question

A face milling operation is used to machine 5mm from the top surface of a rectangular piece of aluminum 400mm long by 100mm wide. The cutter has four teeth (cemented carbide inserts) and is 150mm in diameter. Cutting conditions are: v = 3m/s, f = 0.27 mm/tooth, and d = 5.0 mm. Determine:

(a) time to make one pass across the surface

Answer 1

The time to make one pass across the surface is approximately 246.91 seconds.

Step-by-step explanation:

To calculate the time to make one pass across the surface, we need to determine the cutting speed (V) and the feed per tooth (f) and use the formula: Time = Length / (V * f * N), where Length is the width of the rectangular piece and N is the number of teeth on the cutter.

Given that the cutting speed (V) is 3m/s, the feed per tooth (f) is 0.27mm/tooth, and the number of teeth (N) is 4, we can calculate the time as follows:

Time = 100mm / (3m/s * 0.27mm/tooth * 4) = 246.91s