Earlier today, I was setting up a job I've run several times before. During verification, the first of the two G84's caused the mill to do something I've never seen before. It is probably best explained in this video: [ame="http://www.youtube.com/watch?v=034I-YXibOc"]YouTube - Crazy G84[/ame]
In the video, rapids were set at 25%. If they are at 5%, the 'bouncing' is less severe and slower; at 50%, it is more severe and faster. I didn't even want to try 100%.
I tracked the problem down to the "RAPID -> HS FEED" parameter. I changed it to "1" a while back to use interpolated rapids instead of dogleg rapids. When I changed "RAPID -> HS FEED" back to "0", the problem dissappeared.
My mill is a 2007 MiniMill, with a version 14.04C controller.
Here is the portion of code:
T6M06
G90
S1500
M08
G0X-.325Y-.394
G43H06Z.25
G84X-.325Y-.394Z-.35R.25F37.5
X.325Y-.659
G80
M09
Has anyone else come across this problem before? Is there anything that Haas will do for an out-of-warranty machine with a bug? I would really like to use interpolated rapids because it allows me to take full advantage of my CAM software (ProNC) and minimizes one potential source for crashes.
For now, I will switch "RAPID -> HS FEED" off every time I want to use G84, but that is not a long term solution for me. If I forget to turn it off, G84 will cause a crash. If I forget to turn if on, the dogleg rapids could cause a crash. Damned if I do, damned if I don't...
Thanks in advance,
Chris