2D Adaptive – Also using Wrap Toolpath, Fusion can generate adaptive toolpaths around a cylinder, allowing you to machine pockets or slots that wrap around the part.2D Contour – Fusion 360 can create a simultaneous 4th axis contour toolpath so long as the feature is cylindrical using Wrap Toolpath.Fusion 360 4th Axis ToolpathsĬan Fusion 360 handle simultaneous 4th axis machining? Yes! There are quite a few simultaneous 4th axis Fusion 360 toolpaths, with some being only for cylindrical features and more being gradually introduced for more complex geometry: Paired with some AWESOME toolpaths in Fusion 360 this allows us to machine features that would normally require surfacing or otherwise be impossible to machine without simultaneous 4th axis machining. Simultaneous 4th Axis (sometimes called true 4th axis) machining involves the 4th axis moving at the same time (simultaneously) as the X, Y, and Z axes of a traditional mill.
This comes in handy when for example you need to machine a piece of roundbar to have a square on the end – each side of the square is its own distinct plane, so the 4th axis only needs to move in between cuts. Positional 4th Axis, or 3+1 machining, involves moving the 4th axis of the machine in between cutting material. Then the hobbyist would have to load each file in turn but could process really big files without paying for the upgrade.4th Axis CAM and 4th Axis machining can be handled in one of two ways: positional or simultaneous. It would be fun to write a custom post for the acorn that could take a big gcode file and split it into pieces with a retract and pause at the end of each file. The present control software has a hard limit (very low) on the number of lines of gcode that it can process. That would be a really impressive control for not a lot of $$. I always wondered if the Acorn firmware could be replaced with Machinekit.
This is almost exactly the model that Machinekit was pushing after they forked from LinuxCNC. The hardware seems to be doing the hard realtime stuff on a Beaglebone green with the control running on the PC. I've had a chance to play with the Acorn and was impressed with the hardware but disappointed with the artificial limitations that Centroid built into the cheap tier control software. It was written for some of their old big-iron not for the little Acorn. That's a good start.Ī chrisb noted the Centroid post is really old. The Shiz has Centroid Acorn, which seems to have a Freecad post processor.
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