A 15.0 in by 2.0 in work part is machined in a face milling operation using a 2.5 in diameter cutter with a single carbide insert. The machine is set for a feed of 0.010 in/tooth and a depth of 0.20 in. If a cutting speed of 400 ft/min is used, the tool lasts for 3 pieces. If a cutting speed of 200 ft/min it used, the tool lasts for 12 parts. Determine the Taylor tool life equation. (20 points)

C = 787.2

Explanation:

The Taylor tool life is referred to as the duration of the actual cutting time after which the tool can no longer be used.

To Quantify the end of a tool life we equate it to a limit on the maximum acceptable flank wear.

For the tool life equation, With the slope, n and intercept, c, Taylor derived the simple equation as

VTn = C where.

n is called, Taylor's tool life exponent. The values of both 'n' and 'c' depend mainly upon the tool-work materials and the cutting environment (cutting flake application)

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