Machsupport Forum
G-Code, CAD, and CAM => G-Code, CAD, and CAM discussions => Topic started by: Richard Evans on March 16, 2012, 10:31:54 AM
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I've been tearing my hair out about this. The tool is zeroed against the clamping fixture. I want it to go to X56 Y0 and then down to the work surface at Z-6, and then cut a circular pocket using the NFS wizard. The bit I don't get is how to get the correct pocket depth starting at Z-6 (or any Z other than 0). I will want to cut a series of pockets and slots at two different Z heights along the X axis, and I was hoping to string them together as allowed by the NFS wizards.
This I guess is something to do with offsets? I have watched the videos and searched the forums, but I just don't get it.
All help gratefully received!
Thanks
Richard
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I don't believe that feature was ever planned for in the NFW. If you are doing conversational coding like the NFW it SHOULD be there. Other wise you would need to go back and EDIT the Gcode to provide the proper offsetting (;-( Bummer.
May want to ask about that in the NFW forum on this site.
(;-) TP
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I don't believe that feature was ever planned for in the NFW. If you are doing conversational coding like the NFW it SHOULD be there. Other wise you would need to go back and EDIT the Gcode to provide the proper offsetting (;-( Bummer.
May want to ask about that in the NFW forum on this site.
(;-) TP
Thanks, but I don't expect to do that from within the wizard. The problem is, I don't understand how to do the offsetting at the start of the pocket and turn it off at the end. Just can't make sense of it.
Cheers
Richard
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The WIzards SHOULD do that for you(;-)
You can do it several ways.
Change Fixtures between pockets etc, g55 g56 g57. Rememebr to set up the fixture offsets FIRST.
You can do a G52/92 offset
CODE
CODE
CODE
G55 This changes the fixture offsets to the preset values (Z1.000)
G0 Z0 This moves to the NEW Z 0.000 position
CODE
CODE
G0 Z1 This moves to the new offset position where you want the new Z0 to be
G92 Z0.000 This sets the values of the position back to 0.000
CODE
CODE
etc
etc
Hope that helps if not we will give it a another go.
(;-) TP
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Thanks a lot! I'll hve a go later, will report back.
Cheers
Richard
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I thought I would give an update rather than just leave things hanging.
I am using Sheetcam and I have discovered that I can get the offsets I need by specifying the start depth of the pocketing operations. So instead of chaining the wizards and using Mach offsets, I'm drawing a simple dxf and importing it into Sheetcam.
It's working well... until the next problem!
Cheers
Richard