CNC milling Typically, there are four types of toolpaths: 2D, 3D, 4 axis, and 5-axis. Although this toolpath employs the Z-axis to position a tool for depth, the name “2D” may be deceptive. The prismatic portion in the image below, for instance, has characteristics that are distributed over different heights on the XY plane. By swiftly moving in X and Y, we can place our tool at the proper depth on the Z-axis and then quickly machine a feature. The planning of toolpaths is a challenge for ᴍᴀɴy novice CNC machinists, especially as features get more intricate. This problem-solving procedure is sometimes obvious. The 2D Pocket operation is used for pockets, Chamfer Milling is used for chamfers, and so forth.
The challenging questions, however, are those that don’t have clear-cut answers. How will the hole in the center of the item above be machined? A drill, contour, or circular pocket toolpath are all options. What features should be machined from the top instead of the bottom? Some basic toolpath knowledge is needed in order to provide an answer to these queries.
Each toolpath’s behavior and use case are distinct. Learn about the toolpaths that are listed below because you’ll see them in Fusion 360 and other CAM programs. You’ll also want to familiarize yourself with basic toolpath jargon. The terms listed below are used in almost all CAM software packages. The planning of a 2D machining process brings together all of these concepts and toolpath kinds. See how we might organize the machining of a straightforward prismatic part in the example below.
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