I'm quite new to CNC, although I've been around it a lot as a control engineer. Semi retired, and I am building my own CNC table. I have it almost together, fired up the Masso, loaded software, and getting familiar with it. I've also learned enough of Fusion 360 so I can draw, model, and process an .nc file. yesterday was the first time I successfully created and loaded the nc into the masso and executed it (simulation mode). Cool stuff indeed. But something is off. Please see the attachments. I created a small 2 x 2 x 1 block with a hole in it. I chamfered 2 corners (different radius). I get these huge circles in my tool path. I suspect something is way out of scale, or its trying to tool something it can't. The end mill I selected was .125", so it seems like an easy job for that. I attached 3 files. The CAD model, the CAM post prosessor tool path, and the Masso CNC tool path.
Tool Path Confusion
- Thread starter camman
- Start date
OK, I attached the .nc file. Apparently this is not something obvious but buried. I'm new to CNC work, so I was hoping someone may have seen such a pattern and know exactly the cause. I purposely changed the chamfer radius of 2 of the corners because it seems the tool has difficulty creating the corner. Why is that? And changing the radius did change this, but not fix it. So I am sort of on the right track. It just seems the geometry is off, or the scaling or something. Please know I have not yet completed my CNC table, so it has not been calibrated, nor any home routine done. I'm running this in a simulation at this point. Thanks. Roger
testyourdesign
testyourdesign
I am using Fusion 360 2.0.9313 Personal version Windows 7 (7601)
Do you think the free version or the Win 7 might be the issue?
Can you post your .nc file so I can try one not processed by this system and see if that works. I would appreciate it.
I was just working on it. I can create G-code manually and it works, but nothing sophisticated. It does not allow me to edit any of these processed files. Says they are too large for edit.
Thanks,
Roger
PS I did define a tool as .125 dia Same results.
Do you think the free version or the Win 7 might be the issue?
Can you post your .nc file so I can try one not processed by this system and see if that works. I would appreciate it.
I was just working on it. I can create G-code manually and it works, but nothing sophisticated. It does not allow me to edit any of these processed files. Says they are too large for edit.
Thanks,
Roger
PS I did define a tool as .125 dia Same results.
breezy
Moderator
@camman
Roger,
Read how to get MASSO postprocessor from Autodesk. https://docs.masso.com.au/cam-post-processors/fusion-360
MASSO's code editor is limited to 1800 characters. ( that includes spaces and line feed / carriage return combinations.)
Regards,
Arie.
Roger,
Read how to get MASSO postprocessor from Autodesk. https://docs.masso.com.au/cam-post-processors/fusion-360
MASSO's code editor is limited to 1800 characters. ( that includes spaces and line feed / carriage return combinations.)
Regards,
Arie.
Hi CamMan
It's really hard to tell from the screen shots what is going on.
The best option is to provide the Gcode files as well as the Fusion drawing with toolpaths so they can be examined in detail. You will need to zip them, to post them on the forum.
If it helps you can get screen prints from MASSO by pressing CTRL +P which will make a copy of the screen to the Flash Drive. Might be easier than using a camera.
Cheers Peter
It's really hard to tell from the screen shots what is going on.
The best option is to provide the Gcode files as well as the Fusion drawing with toolpaths so they can be examined in detail. You will need to zip them, to post them on the forum.
If it helps you can get screen prints from MASSO by pressing CTRL +P which will make a copy of the screen to the Flash Drive. Might be easier than using a camera.
Cheers Peter
Thanks, and Merry Christmas. At this point I think I will try to complete my CNC table and actually try to tool a part. (It's been simulation until now). Then I will know for sure. It is hard to evaluate the graphic for the tool path shown. I've drawn up some remaining parts and my machinist is tooling now. I have a servo motor for a spindle, so I had some sophisticated designs to get a mount and coupling to a collet for that. He is also tooling a nice bed for the CNC. Meanwhile I'm putting in home sensors, operator buttons, cable tray and so on. Should just be a week or so and it all comes together. Then I will see how it performs. If it does not follow the required tool path, I will certainly be back here to ask for help. I don't know where else I might get that. Thanks,
Roger
Roger