[Emc-users] G10 L2 R-90 isn't working?

[Gene Heskett]

Greetings all;

Working on my gcode to make it run better on this new machine, as part of 
the init code, I have a G10 L2 R0.0 to cancel anything left in 
memory, then 5 or 6 lines later running in map G54, I have a G10 L2 P1 
R-90.000 to rotate the whole pattern so the long side is aligned with 
the tables T slots to aid in my aligning the workpiece on the table.

I've also rewrote it so the dsub connectors are located by offsets that 
are added to all the x/y locations, so the connectors are shown in the 
backplot at exactly where they were before. But the backplot is not 
showing the effects of the G10 L2 R-90.0, the pattern is still laid 
out horizontally on screen. The machine, when I go to it seems to 
responds to the mdi commands, rotating the red/green arrows as 
requested.  And a move command is in the expected direction, but the 
arrow keys are still x=horizontal and y=to/from. So I'll figure it out 
eventually.

On another front. I opened up the OEM motor box, finding its supplies for 
the stepper drivers were only about 14.5 volts, disconnected them all, 
AND much more importantly to me, the vfd circuit board does indeed have 
a well marked REV input that wasn't used. AVI which I have to assume 
stands for Analog Voltage In, com, fwd, and reverse, so I whittled off 
about 6 feet of cable and connected it. But I see both a 10 volt and a 
12 volt called out but not used, so I've not a clue if the AVI is 5 volt 
or 10 volt. Aha, might have found it, register setting D031 0=digital, 
1=AVI, 2=ACI(0-20 ma) 3=485 com port, 4=PWM, and 5=potentiometer(front 
panel?, doesn't say.)

So now I have to find me a terminal block. I have a gs16-4 connector on 
the back panel of this home brewed driver, but apparently no record of 
which pin is which. I coulda/shoulda left notes in the hal file. I can 
scope or meter it, just have to get the scope 7 feet up in the air

But I was getting light headed from all that running up and down a short 
ladder, so figured I'd better come in and check my sugar, which was fine 
at 135 (great for me) but the blood  pressure gizmo says my systolic 
pressure was about 20 high at 141, but the pulse is only 41. Half or 
less what I've been for 83 years. Might be time for a different BP pill.

This lashup was hard put to run the HF mill at 20 ipm rapids, but with 
these motors and slightly faster screws, X are happy as clams at 60 
ipm, and Z is doing 80 without any complaints. Software stepping mind 
you. I  also levered it back on the table until the back of the Y screw 
is about to touch the water tank, so the spindle motor can't destroy the 
next monitor shelf I make.
 
Progress, I think.

Dinner time anyway.

Cheers, Gene Heskett
-- 



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Re: [Emc-users] tool changer with swiveling arm

[Stuart Stevenson]

https://www.dropbox.com/s/nkw590aq1koyiif/toolchange.mp4?dl=0

or this?

This is LinuxCNC on an Enshu running a tool change component I wrote. It
checks the tool change status when starting and recovers from all but one
positional error. The error is doesn't recover from is with the tool change
arm down and in the middle of a rotation.


On Sat, Jan 5, 2019 at 5:30 AM Gene Heskett  wrote:

> On Saturday 05 January 2019 03:42:43 nkp wrote:
>
> > Are there any examples  where the tool is prepared in advance?
> >
> > Machine : tool changer with swiveling arm.
> >
> > like this
> > http://www.electronicsam.com/images/KandT/conversion/toolchangerspindl
> >e.JPG (image taken from the forum)
> >
> Neat. Obviously built by K I'm considering such a swinging arm style
> for my G0704 at some point. An R8 spindle does not a good design make
> though. And adding ER stuff in TTS holders to the mix complicates the
> heck outta all the monkey motions needed. Consistent tool stickout is
> just a dream, making the calibration per tool before use part of the
> tool changer routine though.  Gets complicated way beyond just
> positioning the chain, and likely will eat up several more i/o bits to
> properly synch the moves.
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
> Cheers, Gene Heskett
> --
>
>
>
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Re: [Emc-users] tool changer with swiveling arm

[Mark Johnsen]

On Sat, Jan 5, 2019 at 6:33 AM andy pugh  wrote:

> On Sat, 5 Jan 2019 at 08:43, nkp  wrote:
> >
> > Are there any examples  where the tool is prepared in advance?
>
> > like this
> >
> http://www.electronicsam.com/images/KandT/conversion/toolchangerspindle.JPG
>
> You mean other than that one?
>

I agree the question is vague and because of the picture I think Andy's
right and NKP216 means any tool changer in general that has the end mill or
bit in the collet prior to inserting it into the spindle.

In that case, google vmc tool changer
.
Also, there are several examples on the web where guys have built their own
tool changers for various milling machines.  I think Tormach has a very
simple system w/ collet holders on the x-axis carriage.

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Re: [Emc-users] tool changer with swiveling arm

[andy pugh]

On Sat, 5 Jan 2019 at 08:43, nkp  wrote:
>
> Are there any examples  where the tool is prepared in advance?

> like this
> http://www.electronicsam.com/images/KandT/conversion/toolchangerspindle.JPG

You mean other than that one?

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] tool changer with swiveling arm

[Gene Heskett]

On Saturday 05 January 2019 03:42:43 nkp wrote:

> Are there any examples  where the tool is prepared in advance?
>
> Machine : tool changer with swiveling arm.
>
> like this
> http://www.electronicsam.com/images/KandT/conversion/toolchangerspindl
>e.JPG (image taken from the forum)
>
Neat. Obviously built by K I'm considering such a swinging arm style 
for my G0704 at some point. An R8 spindle does not a good design make 
though. And adding ER stuff in TTS holders to the mix complicates the 
heck outta all the monkey motions needed. Consistent tool stickout is 
just a dream, making the calibration per tool before use part of the 
tool changer routine though.  Gets complicated way beyond just 
positioning the chain, and likely will eat up several more i/o bits to 
properly synch the moves.
>
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users


Cheers, Gene Heskett
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[Emc-users] tool changer with swiveling arm

[nkp]

Are there any examples  where the tool is prepared in advance?

Machine : tool changer with swiveling arm.

like this
http://www.electronicsam.com/images/KandT/conversion/toolchangerspindle.JPG
(image taken from the forum)



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