Material Removal Rate
Material removal rate (MRR) in cubic inches per minute for milling (WOC x DOC x feed_IPM), turning (12 x SFM x DOC x feed_IPR), or drilling ((pi x D^2 / 4) x feed_IPM) (first-principles swept-volume geometry).
Formula and source
Milling MRR = WOC x DOC x feed_IPM; turning MRR = 12 x SFM x DOC x feed_IPR (the pi x D cancels); drilling MRR = (pi x D^2 / 4) x feed_IPM, in in^3/min.
Material removal rate as the swept volume per unit time - first-principles geometry as in Machinery's Handbook (Industrial Press), by name; public domain.
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