... standard time of X, min)(number of pieces)ϩ (setup time of X, min) ϭ (unit standard time of Y, min)(number of pieces)ϩ (setup time of Y, min). For these two machines, since the number of pieces ... is subject to the Terms of Use as given at the website.Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS 26.20 DESIGN ENGINEERING TIME AND POWER TO DRILL, BORE,COUNTERSINK, AND REAMDetermine ... Length of cut is the length of the relief, Fig. 9. A small amount of time is also required to handfeed the tool tothe minor diameter of the relief. This time is best obtained by observation of theoperations.The...