On Friday 27 September 2013 13:52:30 Jeff Johnson did opine:
> I think most of us want jog while paused, while I don't' have a need to
> change a tool, re-probe and resume cutting in a jog while paused
> situation I can understand why someone would want it. I think we should
> start with the basics, spindle stop and restart, ability to move axis
> or axis's of your choice and return to the part at the point of the
> feed hold call or pause. There will always be some aspect of this that
> makes the operator responsible to give the tool a clear path back to
> the point of the pause. The control can not think this through for you.
> In other words, Feed hold, retract tool manually to a position that
> will have a clear return to the stop point. Have the ability to stop
> the spindle and restart to the same constant surface setting you paused
> at(lathe) and return to cutting conditions you paused at.
>
>
> Jeff L Johnson
> Superior Roll & Turning
> Superiorroll.com
> 734-279-1831
> Fax 279-1166
Not applicable as a universal fix, but I have a subroutine I edit into the
gcode file that does an auto recalibration of tool length anytime a tool
change is encountered. But its for etching pcb's. Using it on a normal
job would require an insulated workpiece pallet as it uses the G38.2 cycle
to detect contact between the new tool and the insulated workpiece. For
that it works well, giving me accuracy better than a thousandth, allowing a
pretty decent etch to be done. I've modified the Z setup on my toy mill,
and have made it at least 10x more repeatable than it was last winter when
I made my first pcb's on it. I should have done it years ago.
I acquired about 50 lbs of 7078-T6, 1/2" thick, and made 2 bars about 7"
long that are bolted to the sides of the head slider, and which bring some
slightly bigger than skate bearings to bear on the machined face of the
post above and below the gibs, eliminating the potential for it to rock and
lock to the post from wedging. I need to put the scales under the head
again as I think that has gained me another 100 lbs I can put on a drill
bit to drill holes. I did have about 150 lbs before.
If anyone is interested, I can refresh whats on my web page with the latest
version of that code.
Cheers, Gene
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Depart in pieces, i.e., split.
A pen in the hand of this president is far more
dangerous than 200 million guns in the hands of
law-abiding citizens.
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