213 2.5 in 2.0 in 412.0 in ? 1.5in. Maierial temaved in one pass FIGURE 6.7 A si

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213 2.5 in 2.0 in 412.0 in ? 1.5in. Maierial temaved in one pass FIGURE 6.7 A simple turning example. NOO5 G9O G70 N010 G98 G92 TOI 015 G0O X2200 Z2b00 FO Rapid positioning of tool to tool start position ND20 x1800 MO3 S10D FO Position tool to remove 0.1 in. off part diameter, start Indicates start of program Specifies absolute programming, inch units Specifies units for speed and feed rate, loads 1st tool NO25 G01 ZsoO F12 NO30 X1900 NO35 G0O Z2b00 FO O40 X1LDO FD NO45 GOL ZSOO F12 NO50 X1700 Feed tool inio workpicce Retract tool (overlap previous cut) Move tool cleur of workpiece Position too to remave 0.1 in. off part diameter Feed tool into workpiecc Retract tool toverlup previous cut) Move tool clear of workpiece Position tool to take finish cut NObO X1500 FO 5 G01 7500 Fl2Feed tool into workpiece NO70 X2200 NO75 GOO X5000 Z5000 FO Move to safe positbion NO80 M3O Retract tool clear of the workpiece Turn off all machine functions EXAMPLE 6.2 Write an NC program to machine the simple aluminum pin shown in Figure 6.7. A 2-im-dine ter blank, 2+-in. long, is to be used. Assumptions 1. The center of the left face of the pin will be used for program zero. 2. The tool start position is 0.2 in. off the diameter and 0.I in. off the right face. ill be taken 4. A spindle speed of 1200 rpm and feed rate of 12 in. /min are used for machi 5. Machine specification: N3G2X+ 43Y 43Z+ 43R+ 43F40S4T2M2. 6. X values are to be programmed as diameters. wo rou Solution brief ex The following program can be used to carry out the required machining. A br the effect of each command is included

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