2.2.5. Operation Time Estimation: Finishing Operations

Expected machining times for finishing operations (*M.T.Finishing*, in minutes) were determined, based on the part's dimensions (in mm), namely length (*Plength*), width (*Pwidth*), part thickness (*t*), and feed value (*Vf*). Equation (12) shows the way to determine the expected finishing time.

$$M.T.\_{\text{Finising}} = \frac{(4 \times P\_{\text{length}}) + (4 \times P\_{\text{width}}) + (4 \times t)}{V\_f} \tag{12}$$

The finishing times are also affected by part complexity level, which will increase with the part's level, as seen for the estimated machining operation times (addressed in detail in Section 2.2.2).

Estimated times obtained from this equation may present deviation, as finishing operations are quite difficult to estimate in this case. As these are dependent on the machining strategy and part geometry, additionally, some parts may require manual finishing, with some of them even needing supplementary clamping to undergo these operations.
