19.5 - X 25. 0 980 ( C 2 20*9 160 1 ( 210 80 990 R5 QU Fig. 1 Array holes 7 ( 1 290 090 C 350 55 050 C 000 00 3X 45 60 M48X2 6*6 08 - 14 Fig. 2 Turning process. (dash: the profile of the stock) 100 $200 G-code based programing. 1. Drill the array holes depicted in Fig. 1. The drilling tool with a diameter of 8 mm is selected to accomplish the entire process. The depth of each individual hole shown in Fig. 1 is 20 mm. 2. Manufacture the shaft shown in Fig. 2. The raw material is a cylinder workpiece with a diameter of 85 mm and a length of 335 mm, the first 25 mm of which is used for clamping. Four tools are provided to accomplish the manufacturing process, where 1#, 2#, 3# and 4# are utilized for rough turning, finish turning, slotting, and threading, respectively.