twin headed hydro punch how to cnc

as the punches are 600mm apart and as we need to position beyond this one drive would be before an one after so they would probably be around 1000mm apart,
so at the start and end of the beam there would only be one drive on the beam and i want to have the drive on one roller and the encoder on the other so i can detect any drive slip and such but i think it would be more trouble some to have the drive try and ride over the end of the beam rather than have it gently lower and nip it when the beam is in between properly maybe?

thanks john

this will help quick clickety click on the cad

this is why i ment have one before the first punch and one after the second as the holes would continue right to the very end

me and dad both thought of that at first but then decided on space was worth more than the machine taking up what would endup ideally being 30 meters worth of space (our longest beam length being 10 meters so 10 ether side of the punches and then the leadin and such because of the drive chain being fixed

where as current the machine i think is only around 6 or 7 meters long and for the longer beams we have some adjustable mobile roller sections to place where needed and packed up when not

so came the pinch roller idea

i noticed what i said just as you wrote that i think andy, (long day now) course it only need to be able to get too one end of the beam as once and travel with it

but even still it would mean one end of the machine taking up 11 meters worth of space and up to now we've only done one job that was the full 10 meters

but id still prefer the pinch roller set up it just seams a nicer set up i do agree it would made life easier with chain drive tho

is there some where im missing to look for the docs relating to subs and the whole syntax the componants relating to subs ect do while and IF and such for writing the punch subs and eventiualy writing the main subs for the beam punching

i have looked and just keep landing on the same user m code pages

thanks john