What went wrong?

[kfitz]

OK, any ideas what went wrong on the left side? The right side looks pretty good. The roughing cut is where things went awry. This is a Buddy with a 48" power stick. It's the first time it's been run in at least 2 years, and it was moved from a previous location.

http://i1120.photobucket.com/albums/l481/Unbridled_Liberty/M1ARXSBOT.jpg

http://i1120.photobucket.com/albums/l481/Unbridled_Liberty/M1ARXVCAD.jpg

[CNYDWW]

Looks as if the roughing pass and finish pass aren't lined up at the same zero. Make sure in your cam program that you recalculate all tool paths. If you applied the roughing pass, moved the model, and then the finish path, it would offset the finish pass as you've shown. Are the finish and roughing passes in the same file? Same tool for both or not?

Regards
Randy

[billp]

Kevin,
Did you do a "simulation" of your tool path before you ran it? If so, how did IT look?

[dhunt]

It's the first time it's been run in at least 2 years, and it was moved from a previous location.The electronics in the control box woke up badly after a 2+ yr. slumber?

Wouldn't you? :D
.

[myxpykalix]

Kevin,
David might be on to something...it might feel something like this:
http://www.youtube.com/watch?v=QuoKNZjr8_U&feature=related

[kfitz]

Wow Jack, that was exactly me the other night. :)

To answer the other questions; roughing and finish were separate files and different bits (1/4" and 1/8" round). I zeroed XY with the prox switches before running each file. I also zeroed Z with the plate before each file. I will double check the XY zero in the file. I did run the simulation for both and they looked good.

I did catch myself once leaning on the table during the end of the finish pass. Guess I was just mesmerized by the again-living 'bot? :rolleyes: I don't think I leaned against it during the roughing pass, but you never know. I just got word that the machine owner ran a part today and it came out fine. I guess I will recheck the tool path zero's, run the simulations again and try another part.

Thanks for the input guys.

[myxpykalix]

Kevin,
If you have issues when you lean on your bot then you need to do some major straightening and tightening to your setup.

You should not run the XY prox routine between each file. I only do it once when starting new work then run Z zeroing between bit changes.

On the front edge of your part closest to the table surface, is that part of the design of the part? If not then couldn't you put a vector boundry line at the top of the ridge of the round section to keep bit from going down side of part? I have seen things where this was made by toolmarks because you were dealing with a 90 degree straight up edge and tool could not cut it(?):confused:

[jerry_stanek]

Kevin,
If you have issues when you lean on your bot then you need to do some major straightening and tightening to your setup.

You should not run the XY prox routine between each file. I only do it once when starting new work then run Z zeroing between bit changes.

On the front edge of your part closest to the table surface, is that part of the design of the part? If not then couldn't you put a vector boundry line at the top of the ridge of the round section to keep bit from going down side of part? I have seen things where this was made by toolmarks because you were dealing with a 90 degree straight up edge and tool could not cut it(?):confused:


Jack it is a Buddy with a moving table so if you lean on it you could lose steps

[myxpykalix]

OOPS! :eek: nevermind....:D