Quote:
Originally Posted by sanddrag
The I and J coordinates are the incremental distances from the starting point to the center of the arc, not the coordinates of the center itself. The coordinates of the center itself never actually appear in the code. So if you are starting at 1,5 the center (at 5,5) is located at an incremental/additional 4 in the X (I), and 0 in the Y (J) directions (since you are sitting directly to the left of your intended center).
Also, not sure about yours, but many machines are very particular about leaving decimal points off of a number. For example, on a HAAS machine, "F4" does not mean the same thing as "F4." Oh, and that's the the other thing. You are missing feed rates all around. The units of feed rates are in inches per minute. To start out, I'd keep the feeds under 10 IPM.
Finally, in your first line (the G90 absolute line) I would add G0 X0 Y0 Z1 to make it do what you say in the comment.
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Is there a way to change that in the settings of the program? It know the program (And machine itself) I use in my CIM class does not work via increments. So to me his code was just fine. Had he plugged it into the program in my class it would have worked.
Do you have any idea as to what would cause this?
Also. The feed rates depend entirely on what you are cutting. I cut butter board around F15 and plunge at F5 just to be safe. I could probably cut faster. But as a side note. Just as with driving you slow down for turns. Slow your feed rate down when you are cutting arcs.
-Rion