Postprocessor - radius values double!
21 Oct 2023 11:18 #283438
by JuFu
Postprocessor - radius values double! was created by JuFu
I created a cylinder in Fusion360 and inteded to lathe it.
My lathe is controlled by LinuxCNC. Therefore I created the NC-program by using the LinuxCNC-turning postprocessor (latest version downloaded from Fusion360 cloud).
When I check the postprocessor output, the X-values are twice as large compared to the radius in the design.
What did I wrong?
Is it a setup issue? Or postprocessor configuration issue?
Juergen
(sorry for my English)
My lathe is controlled by LinuxCNC. Therefore I created the NC-program by using the LinuxCNC-turning postprocessor (latest version downloaded from Fusion360 cloud).
When I check the postprocessor output, the X-values are twice as large compared to the radius in the design.
What did I wrong?
Is it a setup issue? Or postprocessor configuration issue?
Juergen
(sorry for my English)
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21 Oct 2023 13:37 #283443
by tommylight
Replied by tommylight on topic Postprocessor - radius values double!
Radius and diameter are not the same thing, radius is always half of diameter.
LinuxCNC uses radius, as far as i know so that should probably be set in CAM.
Basically, the CAM is outputting diameter while LinuxCNC expects radius.
LinuxCNC uses radius, as far as i know so that should probably be set in CAM.
Basically, the CAM is outputting diameter while LinuxCNC expects radius.
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21 Oct 2023 17:10 #283450
by JPL
forums.autodesk.com/t5/hsm-post-processo...us-mode/td-p/8932820
forums.autodesk.com/t5/fusion-360-manufa...-mach-4/td-p/9964201
The easiest way is then to set your lathe to diameter mode with G7 (preamble).
See here: linuxcnc.org/docs/html/gcode/g-code.html#gcode:g7
Replied by JPL on topic Postprocessor - radius values double!
This is because Fusion360 postprocessor always output values in diameter mode. There's is a way to change this to radius mode but it is not easy since you have to edit the postprocessor itself for that. See below for a few discussions about this:When I check the postprocessor output, the X-values are twice as large compared to the radius in the design.
What did I wrong?
forums.autodesk.com/t5/hsm-post-processo...us-mode/td-p/8932820
forums.autodesk.com/t5/fusion-360-manufa...-mach-4/td-p/9964201
The easiest way is then to set your lathe to diameter mode with G7 (preamble).
See here: linuxcnc.org/docs/html/gcode/g-code.html#gcode:g7
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