@Darren_Lee I’m glad you have surfaced this. I’d like to try to cut it myself but need the DXF to start fresh and then send it to you to isolate if it as some of us think, a fusion issue.
Would you prefer dxf or step file?
I built this from a STEP file so this is the original:
Fusion360 toolpath Settings:
2D Contour
1/8" dia 2-flute (straight) square end mill
15000 rpm (not relevant because I manually control speed - still getting S&F’s dialed in)
Cutting Feed rate 2000 mm/min
Lead-in/out/ramp/plunge rate 762 (default I think)
Tolerance 0.01mm
Min. Cutting Radius 1mm
Stepover 0.3175
Repeat Finishing pass checked
Roughing Passes (checked):
max stepover 0.8mm
Smoothing Deviation 0.1 mm
Number of Stepovers 1
Multiple Depths (Checked):
Max Roughing Stepdown = 2mm
Finishing stepdowns 1
Finishing Stepdown 0.2mm
Finish Only at Final Depth (checked)
Rough Final (Checked)
Order by Islands (checked)
Smoothing Tolerance = 0.01mm
I would need the DXF of the file and I would need to know what post processor you are using and all of the depths etc. I think that tinyg is not interpreting the arcs the way that it should
I feel like this issue may be similar to this:
https://groups.google.com/forum/#!topic/chilipeppr/ydHB-YVIcds
Here is the DXF:
Note: Due to my method of generating the gears I had to create a DXF using a projection of the STEP object profile in Fusion 360. I do most of my CAD in OnShape at the moment. One thing that I have noticed is that when I use Splines in the involute gear tooth profile, it is difficult for CAD programs to translate the splines in the sketches. To generate this DXF took me a few different approaches.
Here is an idea for you, if you join all of your arcs and splines into one polyline you could easily solve the issue.
Ok I joined the arcs and splines into one polyline
Darren
I joined all of the arcs and splines into one polyline try this file
Tracy Ranson
I’m getting a Translation Error in Fusion360 when I try to upload that DXF.
On somewhat of a tangent, is there a reason to use DXF files over 3D files such as Step files?
I use DXF for 2D I can convert the file what software do you use
I use OnShape and Fusion360. Fusion is what I use for CAM. For some reason it doesn’t like that dxf. But for creating my toolpath I son’s use a dxf, I use a Step file and select the contour of the 3D body I’m trying to cut.
Try the DWG file and I will keep converting until one works
Tracy Ranson
Forgot to mention that you need to open in Fusion360
Tracy Ranson
@Tracy_Ranson I’ve randomly followed your post but your assistance here is above and beyond. I’d like to help you become more involved in this community. If you’ll take us :-). Let’s talk I’m not hard to find.
@Darren_Lee I’ll do my best to squeeze this into tomorrow’s task. I may run it in wood, may run it in Al. With the R7 it almost scoffs at me if I’m not pushing it to the limit. I could size it to run on the little desktop thing. Will figure it out tomorrow.
Thanks to both of you for looking into this. I’m glad to have run into this issue during my learning phase before getting into more serious CNC jobs