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FANUC CNC Milling Programming Basics - G02/G03 Circular Interpolation 3

 In this example, we have a toolpath composed of a combination of straight lines and arcs. We will use a mix of G01, G02, and G03 commands for programming. It's important to pay attention to the changes in toolpath elements and adjust the modal commands accordingly. When using circular interpolation commands, be mindful of the clockwise or counterclockwise direction and specify the correct arc radius. Additionally, we typically program machining operations in the G17 plane by default, but there are also G18 and G19 planes for arc machining. When using tool radius compensation, it is necessary to select the cutting plane, although the default G17 plane does not require explicit specification. Examples of arc machining in other planes will be provided later.



Program code:

G90G54G40G1Z100F1000M03S3000 G0X40Y30 Z3 G1Z-2F50 G1Y50F1000 G2X50Y60R10 G1X80 G3X100Y80R20 G1Y110 X150 G2X160Y100R10 G1Y50 G3X140Y30R20 G1X40 G1Z5F200 G1Z100F1000 M5 M30

The initial state of the workpiece before machining is as shown in the following diagram:



The simulated machining result is shown in the following figure:



Note: The program starts with coordinate system and tool change commands, followed by initial tool positioning with rapid traverse (G0) to the starting point. The toolpath consists of a series of linear movements (G1), clockwise arcs (G2), and counterclockwise arcs (G3). Each segment is defined by its respective coordinates and radii. The program ends with spindle stop (M5) and program end (M30) commands.

Please note that the above program is provided as an example. It's important to verify and adjust the program based on the specific requirements of your machining operation.

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