G code Generator for Mills

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12 Mar 2014 05:24 - 12 Mar 2014 18:58 #44711 by pi.r
Replied by pi.r on topic G code Generator for Mills
Duplicate post removed. See next post
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Last edit: 12 Mar 2014 18:58 by pi.r.

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12 Mar 2014 05:27 - 12 Mar 2014 05:55 #44712 by pi.r
Replied by pi.r on topic G code Generator for Mills

BigJohnT wrote: Actually the inch/mm give sane presets lol.

That's nice. I like that. But I think it would be better to get rid of the separate unit setting, and instead just read the "Preamble" field and look for G20/G21. Maybe that's already in your plan...

Checked 1.7.04. Export to Axis and save to file works perfectly.

Step over issue:

I enter:
  • Tool Diameter: 4mm
  • Step over: 75% (or empty)
  • X Length: 50mm
  • Y Length: 15mm
  • X Reference: 0
  • Y Reference: 0
  • X Start: (empty)
  • Y Start: (empty)
I get:

File Attachment:

File Name: temp_2014-03-11.ngc
File Size:0 KB


The work piece rear edge is positioned at Y0.0mm
The first horizontal cut will be made at Y-3.0mm
With a tool radius = 2.0mm, the cut area will then range from Y-1.0 to Y-5.0, leaving the first mm from the edge untouched, right..?
The left, right and bottom edges will also be cut, leaving 1mm along the outside uncut in the same way.

I expext:
With a 4mm tool and 75% step over, the tool should cut 3mm into the material in each move. So to me that means the first move should be from X-2.0 Y-1.0 to X49 Y-1.0, and so on.

I assume:
X and Y Length corresponds to the size of my work piece to be cut.

I have to admit that I am a complete newbie in CNC and CAM processing and have a lot to learn, so I might very well be completely lost here. But I really believed I had a fairly good grasp of this... :huh:
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Last edit: 12 Mar 2014 05:55 by pi.r. Reason: Clarification and misspelling

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12 Mar 2014 05:42 - 12 Mar 2014 05:51 #44713 by pi.r
Replied by pi.r on topic G code Generator for Mills
There are more issues here...

When I tried to shift the start position to where I want it to be with Y Start = -1.0, I got This:


(Same parameters as before, except for Y Start)

Or with more offset: Y Start = 10.0




Not what I expected...
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Last edit: 12 Mar 2014 05:51 by pi.r. Reason: added 2:nd immage

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