I think this thread has grown in scope. I did use Halscope to look at
the signals as suggested by Chris Radek and it showed a discontinuity in
the encoder velocity. This led me to looking at the regularity of the
index pulse which was found to be flawed. I didn't take any pictures of
the Hal
On Tuesday 30 September 2014 12:02:00 Jon Elson did opine
And Gene did reply:
> On 09/29/2014 10:23 PM, David Nicholls wrote:
> > Thanks to Gene Heskett and Chris Radek for their help. I must have
> > picked up an electrical noise problem in the index pulse since I last
> > checked because it's gi
On Tuesday 30 September 2014 11:55:30 Jon Elson did opine
And Gene did reply:
> On 09/29/2014 10:21 PM, Gene Heskett wrote:
> > That won't be a very informative test in many cases
> > because the machine may have been "touched off",
>
> No, if the axis is homed, the soft limits are always
> refere
On 09/29/2014 10:23 PM, David Nicholls wrote:
> Thanks to Gene Heskett and Chris Radek for their help. I must have
> picked up an electrical noise problem in the index pulse since I last
> checked because it's giving two unequally spaced triggers per revolution
> of the spindle at the moment. Thi
On 09/29/2014 10:21 PM, Gene Heskett wrote:
> That won't be a very informative test in many cases
> because the machine may have been "touched off",
No, if the axis is homed, the soft limits are always
referenced to the MACHINE coordinate system.
Touching off, (or G92) does not alter that coordin
On Monday 29 September 2014 23:34:18 sam sokolik did opine
And Gene did reply:
> I think you are a little confused with soft limits/home switches. Soft
> limits are in relation to your home switches (machine coordinates).
> They do not move with touch off. They work wonderfully. once I home
> our
I think you are a little confused with soft limits/home switches. Soft
limits are in relation to your home switches (machine coordinates).
They do not move with touch off. They work wonderfully. once I home
ours - no matter how hard I try I cannot get the machine to hit the
limit switches :)
Thanks to Gene Heskett and Chris Radek for their help. I must have
picked up an electrical noise problem in the index pulse since I last
checked because it's giving two unequally spaced triggers per revolution
of the spindle at the moment. This, in turn, puts an unrealistic jump
in the encod
On Monday 29 September 2014 22:42:26 Jon Elson did opine
And Gene did reply:
> On 09/29/2014 07:32 PM, Gene Heskett wrote:
> > I am doing it on a lathe, and I have seen that occur. From what I can
> > deduce, its running into the - limit on z, stopping the carriage, but
> > keeping track of where i
This is interesting... especially since I JUST got my spindle encoder
installed and got rigid tapping working. Have not had much time to play
with it yet but it works. I am going to have to figure out how to get my
CAM to generate the G33.1 instead of the G84 or whatever it is...
Pete
On Mon, S
On 09/29/2014 07:32 PM, Gene Heskett wrote:
>
> I am doing it on a lathe, and I have seen that occur. From what I can
> deduce, its running into the - limit on z, stopping the carriage, but
> keeping track of where its stopped and picks Z back up in the back out
> move as its internal z position ma
On Tue, Sep 30, 2014 at 08:57:25AM +1000, David Nicholls wrote:
>
> The video can be seen at http://www.youtube.com/watch?v=8KEfMRF1yx4
I tried tapping in sim/axis/lathe (which as a simulated spindle with
inertia and everything) and it looked right.
Could you plot this in halscope, showing motio
On Monday 29 September 2014 18:57:25 David Nicholls did opine
And Gene did reply:
> Hello,
>
> I need some advices regarding spindle synchronized motion on LinuxCNC
> 2.6.3. I rebuilt the machine that drives my CNC knee mill a few days
> ago and I can't get the tapping sequence to work correctly.
Hello,
I need some advices regarding spindle synchronized motion on LinuxCNC
2.6.3. I rebuilt the machine that drives my CNC knee mill a few days
ago and I can't get the tapping sequence to work correctly. The Z axis
motion waits above the hole while the spindle accelerates to speed
(which I
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