Scale Issue

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Scale Issue

Postby Fender_Fish » Fri Apr 12, 2019 11:47 am

Hi guys,
Im new to using a CNC machine so please excuse me if this is a stupid question.
I have set up a new PC with Fusion 360 and UCCNC. I have the UCCNC post processor installed and it drives my machine when I use the arrow keys. However when I load G Code into UCCNC after creating the tool paths from a imperial scale model in Fusion, the image looks correct in the geometry window, but when I run the program the router head moves to the correct point on the material, but then seems to be trying to route a tiny component. Its certainly not routing the component I designed in Fusion.
It looks like I have a scale or conversion issue somewhere, but I don't know where to look. Any ideas?
Many thanks, Pete
Fender_Fish
 
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Re: Scale Issue

Postby ger21 » Fri Apr 12, 2019 12:21 pm

If the machine is configured in metric units, then your g-code needs to be in metric units as well.
Gerry
UCCNC 2017 Screenset - http://www.thecncwoodworker.com/2017.html
ger21
 
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Re: Scale Issue

Postby Fender_Fish » Fri Apr 12, 2019 1:02 pm

Hi Gerry,
I have modelled the part in inches and out put the Gcode in inches. I think that I need to somehow scale UCCNC so that the steps match an inch?
Not sure if this is true though?
Cheers
Pete
Fender_Fish
 
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Re: Scale Issue

Postby ger21 » Fri Apr 12, 2019 1:17 pm

If UCCNC is configured in mm's, you'll need to change it to inches, or create a separate profile for inches.
You can't mix inches and mm's in UCCNC.
Gerry
UCCNC 2017 Screenset - http://www.thecncwoodworker.com/2017.html
ger21
 
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Re: Scale Issue

Postby ger21 » Fri Apr 12, 2019 1:18 pm

If you are using the latest test version of UCCNC, you can set axis scaling as an alternative, but your feedrates will likely be too slow?
Gerry
UCCNC 2017 Screenset - http://www.thecncwoodworker.com/2017.html
ger21
 
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Joined: Sat Sep 03, 2016 2:17 am


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