I've been trying to cut a simple part using Fusion360.
no matter what settings / strategy I use, I always see rounded corners on the simulation and G3 calls in the profiling section.. On a straight profile??
The model doesn't have a single angle or arc on it.
I've tried it on two separate computers and also tried it using Inventor 2016.
All do the same.
Model:
Attachment 291922
Note arc in tool path:
Attachment 291924
Note G18 and G3 in code.
Code:
N51 M9
N52 M1
N53 T101
N54 G98
N55 M22
N56 G97 S1200 M3
N57 M8
N58 G0 X1.2598 Z0.1969
N59 G0 Z-0.11
N60 X0.6592
N61 G1 X0.4429 F8.
N62 G18 G3 X0.46 Z-0.1412 R0.0612
N63 G1 Z-2.4162
N64 X0.6
N65 G0 X0.6201
N66 Z-0.11
N67 X0.5924
N68 G1 X0.4187 F8.
N69 G3 X0.44 Z-0.1412 R0.0513
N70 G1 Z-2.4162
N71 X0.58
N72 G0 X0.6001
N73 Z-0.0976
N74 X0.5637
N75 G1 X0.3914 F8.
N76 G0 Z-0.11
N77 G3 X0.42 Z-0.1412 R0.0412 F8.
N78 G1 Z-2.4162
N79 X0.56
N80 G0 X0.5801
N81 Z-0.1
N82 X0.5441
N83 G1 X0.3375 F8.
N84 G0 Z-0.11
N85 G3 X0.4 Z-0.1412 R0.0312 F8.
N86 G1 Z-2.4162
N87 X0.56
N88 G0 X1.2598
N89 Z0.1969
N90 G53 X0.
Just messing around and I suppressed the center hole / threading.
No more arc moves in the profile code!
That's when the second error came to my attention.
In the grooving section it's doing two groove cuts to form the small feature.
First groove goes down to 0.22", second goes down to 0.20" so my cut part has a step in the feature.
Code:
N36 G0 X1.2598 Z-0.078
N37 G0 X0.6324
N38 G1 X0.4924 F1.8
N39 X0.4724
N40 X0.22
N41 X0.4924
N42 G0 Z-0.11
N43 G1 X0.4724 F1.8
N44 X0.409
N45 X0.2
N46 Z-0.078
N47 X0.4736
N48 G0 X1.2598
N49 Z0.1969
N50 G53 X0.
Is there a CAM solution for turning that works??
For something like this it's probably easier to learn G-code and code it myself.