The conveyor is slow. I thought of multiple jets (and this might still be the best way) my only problem is that would be an awful lot of jets and the solenoids to actuate them to cover the conveyor width.
I think one or a small number of mobile jets will be best. calculating the delay position seems a trivial task. I assumed the vision would be several feet away from the actual air jet. The problem of multiple simultaneous pockets to be cleaned, I may be best addressed by telling the humans loading the conveyor to avoid it. ----- Original Message ----- From: "andy pugh" <bodge...@gmail.com> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Tuesday, August 19, 2014 10:16:02 AM Subject: Re: [Emc-users] Machine Vision? On 19 August 2014 15:02, Todd Zuercher <zuerc...@embarqmail.com> wrote: > This is what we are trying now. And it isn't quite working. To get the > pockets clean pressures on the air curtain have to be so high that we have to > have roller hold downs on the pieces to keep them from flying off the table. > It also requires a huge amount of air to cover a 5ft wide conveyor Machine Vision coupled with an array of jets, only actuating those required, might be the way to go. When a pocket is identified it is presumably a known time delay until that pocket is under a calculable jet position. The same approach might work with a movable single jet, but that might not work if more than one pocket can be in a line across the conveyor. Interfacing to LinuxCNC shouldn't be too hard, either pass movement commands to motion from Python, or ignore motion altogether and pass locations to a Limit3 comp which drives a stepgen / PID in a HAL-only config. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
