Fanuc controls, short arcs cutting as full arcs.
Here we go again and still stumped by this. Please let me explain as well as I can. Another customer has called complaining that a small arc in a really dense program is actually deviating and cutting a full circle. I had another customer call about the same thing about a year ago. This latest event happened on a Fanuc 21i and the previous case was on a Fanuc Oi control. I had this happen to me way back in the 90's and scrapped 2 $30,000 mold cores. One was an 11M Fanuc and the other was a brand
Hello,
I know this is old and, no, we have not nailed this down yet to a specific cause. I think Colin might have come the closest though with his remark about minimum arc length. This makes the most sense since the examples I have seen were arc length less than the standard Mastercam tolerance. But this isn't a Mastercam issue although Mastercam can help prevent this from happening. I think the real issue is how a Fanuc control interprets an arc and it's not simply tied to the minimum radi
