Are you setting the Z zero in the same place both in Fusion and the part? I normally Z set to the top of the part. Sometimes Fusion can be a little tricky to setup properly, you have to make sure it did what you expected. Simulation is your friend.
I’ve got a Fadal VMC 40, using a calmotion usb, and fusion 360:
So x and y axis all run true to the cam programming. However the z axis alway cuts too deep/runs into the part to aggressively to get there. I have done tool setting and fixture setting 100x and don’t know what I’m doing wrong. It tends to cut in nearly 1/2” too deep every time. This machine is new to me, and I am new to machining. I feel like I’ve been through every manual and website trying to find what I’m missing and can’t find it. Any suggestions?
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Are you setting the Z zero in the same place both in Fusion and the part? I normally Z set to the top of the part. Sometimes Fusion can be a little tricky to setup properly, you have to make sure it did what you expected. Simulation is your friend.
Jim Dawson
Sandy, Oregon, USA
Hi i don't know if this will help.
I have a similar issue with the free version of Fusion 360 and Mach 3
The new changes to fusion removes the G43 command from the Mach 3 g-code output
When the C code is generated in the first few lines it does a G49 command that clears the tool offsets
If a G49 exists in the G code then I have to add the G43 Z(safe) H (Tool Number ) command.
You could try to remove the G49 from the G code.
Manually enter it in before running the code then reset your zero manually and see what happens.
I have not tried that yet but it was going to be my other option if the tool offset didn't work.
Below is a sample of what i had to do if it helps.
G49 clears all tool height offsets
M5 changes tool routine
T124 M6 changes tool to tool 124 but does not apply the tool height offset yet
G43 Z5 H124 applies the tool height for tool 124 at the tool table height for H124 with a safe Z of 5mm above the work zero ( I have the tools heights entered into the Mach 3 controller so it knows what to apply)
you don't need to worry about all the rest of the code its only a sample of my output.
(ATT-EDGE-6)
(T124 D=4. CR=0. - ZMIN=-4. - FLAT END MILL)
G21
G40
G49
G80
G90
(WHEN USING FUSION 360 FOR PERSONAL USE, THE FEEDRATE OF)
(RAPID MOVES IS REDUCED TO MATCH THE FEEDRATE OF CUTTING)
(MOVES, WHICH CAN INCREASE MACHINING TIME. UNRESTRICTED RAPID)
(MOVES ARE AVAILABLE WITH A FUSION 360 SUBSCRIPTION.)
(2D CONTOUR2)
M5
T124 M6
S2500 M3
G54
G0 B0. C0.
G17
G43 Z5. H124
G0 X155.4 Y-33.7 Z4.
G94 G1 Z2. F60.
Z-0.1 F120.