Maximum and Minimum Feed Constraints

The maximum feed permissible for the cutting tool (f_tmax) is set as per the recommendations given by the cutting tool manufacturer. As per these recommendations, f_max should not exceed 0.4-0.5 times the insert corner radius for triangular inserts and 0.6 - 0.7 times the corner nose radius for square inserts. The minimum feed value is set to the smallest feed rate available on the machine tool. This constraint checks the feed rate during finishing operation becoming too small. Thus, the feed constraints can be expressed as:

Equation

f_min  ≤  f ≤ min { f_max , f_max }