I have the tool check function on a Centroid control(lathe).
I only have used it for OD turning...I dont know if
it is smart enough to know which way to move if a different
direction is needed.Maybe the tool orient is used for the movenent
away form the part.
My guess is you would have to decide if
the tool check would work or not.

Terry


On Mon Jun 22 10:50 , 'Steve Stallings' <[email protected]> sent:

>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 
[[email protected]','','','')">[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
>> > 
>> > 
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