Since the chief problem is having the trajectory planner stopped on a command boundary, would there be a practical way to have a "Pause" input bring the planner to a controlled stop such that the same approach Les used can allow more general moves?
> -----Original Message----- > From: Leslie Newell [mailto:[email protected]] > Sent: Monday, June 22, 2009 11:27 AM > To: [email protected]; Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Using MDI during a Program? > > Hi Terry, > > A 'tool check' type function would be very useful but it > doesn't look like anyone is likely to have enough time to put > into this in the foreseeable future. I would like to have a > go but I simply don't have the time to invest in learning the > inner workings of the trajectory planner. > > To be honest, the amount of coding needed for a 'tool check' > function is likely to be pretty similar to that needed for > full movement while paused. The difficulty is in resuming > from halfway through a blended move. Not only are you > potentially half way through a line of code but in the case > of a blended corner the cutter may not even be on the > commanded tool path. > > Les > > > Terry wrote: > > Leslie, > > > > I am not opposed to this change and if there is enough > intrest in this > > then great. > > > > I think that a better feature would be a "tool check" > > Cutter is loading up(or whatever problem),you hit the tool check > > button and the machine would move to a safe location and go into a > > pause mode.Fix the problem and hit the tool check button again and > > machine would go to where it was when the button was > pushed(or maybe > > the line right before it. > > It would be pretty close to what an M01 would do but with a > move away > > and back. > > There is going to drawbacks for this but it might be useful. > > > > > > > > Later > > > > Terry > > > > > > > > On Mon Jun 22 4:02 , Leslie Newell > <[email protected]> sent: > > > >> Hi Terry, > >> > >>> Having a tool presetter or not,at some point in time you have to > >>> inform the control how long the next the tool is. > >> Of course. > >> > >>> then you put the next tool in and > >>> touch it off, write it in the tool table in the T2 line > >> You need to manually jog to touch off the tool. It doesn't > matter if > >> you need MDI or not, you still have to stop the program. > Not sure why > >> you bother with manually changing the tool table though. The touch > >> off button in Axis does it for you, though it needs to be > able to use > >> MDI mode to do it. > >> > >>> then scroll down to T2M6 in the prog and right click and > hit start from here. > >>> I think that is pretty easy. > >> Yes, but prone to errors, especially if you have a long > program with > >> a number of tool changes. It is a lot easier to simply > press cycle start. > >> > >> > >>> Replacing broken tools goes like this for me: > >>> Groan loudly hit esc,jog out of the way,pick up what is > left of the > >>> tool and throw it at the wall as hard as I can. > >> LOL. Being able to jog halfway through a job doesn't > really help with > >> this situation. Unless you have superhuman reflexes you will still > >> have to back up the program to the point where the cutter failed. > >> > >> > >> However, where it is really useful is if the cutter starts > loading up > >> with swarf. I regularly machine sheet plastic (acrylic engraving > >> laminate). While plunging the cutter often gets a lot of swarf > >> wrapped around it. After a couple of plunges you end up > with enough > >> tied around the cutter to start rubbing and burning the surface of > >> the work. You then need to pause, lift the cutter and clear the > >> swarf. This is a production job, not hobby use. I have experienced > >> similar problems often enough on my lathe as well. > >> > >> > >>> I view the developers time as super-valuable and would > not like to > >>> see them spend time on this when there are other more important > >>> things on their plate. > >> My point is that being able to jog/use MDI during a manual tool > >> change should be a relatively trivial task that makes life > a easier > >> for a lot of EMC users. The other day I was talking to an > OEM who was > >> trying to choose between EMC and Mach. He was pretty enthusiastic > >> about EMC until I told him you can't jog during a tool > change. As far > >> as he was concerned that was a show stopper and he went for Mach. > >> > >> Being able to jog during pause is not nearly as easy and would > >> involve quite a bit of work. > >> > >> Les > > > > > > ---- Msg sent via CableONE.net MyMail - http://www.cableone.net > > > ---------------------------------------------------------------------- > > -------- Are you an open source citizen? Join us for the > Open Source > > Bridge conference! > > Portland, OR, June 17-19. Two days of sessions, one day of > unconference: $250. > > Need another reason to go? 24-hour hacker lounge. Register today! > > > http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebr > > idge.org _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > -------------------------------------------------------------- > ---------------- > Are you an open source citizen? 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