Question 4.9: Use APT to write a NC program to mill the part shown in Fig....

By using APT, the NC program is written and shown in Table 4.11. The first part (line 1–3) is to label the program, specify machining type, and select the tool. The second part (line 4–13) is to define all geometric entities. The third part (line 14–16) is to set up operating conditions for cutting speed, feed rate, and coolant supply. The fourth part (line 17–22) is for all motion statements. The last part (line 24–26) is to reset the tool position and terminate the machining operation.

Table 4.11 NC program to mill the part in Fig. 4.103