Re: [CAD_CAM_EDM_DRO] Jog Pendant
Posted by
bfp
on 2000-05-04 23:32:11 UTC
the only machine I've seen that used a joystick to jog is the Omniturn
retrofit
package and that just used a digital stick in place of the usual 4 jog
buttons
it seems like a good idea at first but the stick turns out to be awkward to
use for jogging ,buttons and an encoder dial are much more natural (for me )
a better use for the j-stick port might be to use the joystick button inputs
for jogging
and wire the analog inputs to feed/speed override dials(in 10% increments)
that is IF you wanted to use the j-stick port at all ,you wont be editing
in another window while jogging so the normal keyboard commands
should be ok
my concern was Jon's point about E-stop being the only way to bail out
in the situation he described
on most of the machines I've worked on the 3 main pendant controls are
E-stop,feed hold and cycle start ,and are always grouped together in the
easiest to reach spot on the pendant
jog controls and override dials come next and the keypad and edit functions
usualy get pushed to the top-far side of the control
Brian
retrofit
package and that just used a digital stick in place of the usual 4 jog
buttons
it seems like a good idea at first but the stick turns out to be awkward to
use for jogging ,buttons and an encoder dial are much more natural (for me )
a better use for the j-stick port might be to use the joystick button inputs
for jogging
and wire the analog inputs to feed/speed override dials(in 10% increments)
that is IF you wanted to use the j-stick port at all ,you wont be editing
in another window while jogging so the normal keyboard commands
should be ok
my concern was Jon's point about E-stop being the only way to bail out
in the situation he described
on most of the machines I've worked on the 3 main pendant controls are
E-stop,feed hold and cycle start ,and are always grouped together in the
easiest to reach spot on the pendant
jog controls and override dials come next and the keypad and edit functions
usualy get pushed to the top-far side of the control
Brian
> The problem with the PC game joysticks is they are extremelydiscussion of shop built systems, for CAD, CAM, EDM, and DRO.
> non-linear, and drift wildly with temperature. they use a cheap
> pot it the stick, and a timer chip and cheap capacitor and resistor
> to measure the pot position. I can't allow a machine that can
> exert over 1000 Lbs of linear force to be controlled by something
> that unreliable.
>
> Jon
>
>
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Discussion Thread
Jon Elson
2000-05-04 22:42:40 UTC
Re: [CAD_CAM_EDM_DRO] Jog Pendant
bfp
2000-05-04 23:32:11 UTC
Re: [CAD_CAM_EDM_DRO] Jog Pendant