Re: [Emc-users] manual tool change

[Jon Elson]

Doug wrote:
>  I need a way to execute a manual tool change.  The documentation point to a
> Axis_manualtoolchange.hal file to be located in the config.  I am using the
> Pico system boards for a controller.   I cannt seem to find the this hal
> file or how to install it.  John if you're out there maybe you already have
> this file to work with your boards. 
>   
Nope.  Since my machine also does not have a tool changer, I learned to 
adjust my workflow to do
everything I can with one tool.  So, I set up a fixture to position the 
work repeatably, and I do all
the parts with one tool before setting up to do all the parts again with 
the next tool.  I know that
goes against CNC procedure, but it actually works faster for me than 
swapping tools on each part.

There are methods for pre-measuring all your tools and entering the 
length offsets in the tool table,
so you don't have to touch off at each tool change.

I have heard some people talking about how to break out of a program and 
touch-off a different tool,
and then continue the program, but I don't know how to do that, either.

If all you want is to be able to continue after the toolchange, there 
are a couple ways to do it.
If you give a T5 M6, then EMC2 waits to be informed the toolchange is 
done.  If it is a manual
procedure, then you need to add a button and connect it in HAL to an 
input to signal EMC that
it is safe to continue.  There is info in the integrators manual, I 
believe, on how to do this.

Jon

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Re: [Emc-users] manual tool change

[andy pugh]

On 18 March 2011 22:56, Doug  wrote:
>  I need a way to execute a manual tool change.  The documentation point to a
> Axis_manualtoolchange.hal file to be located in the config.  I am using the
> Pico system boards for a controller.   I cannt seem to find the this hal
> file or how to install it.  John if you're out there maybe you already have
> this file to work with your boards.

I thought it was in all the sample configs, but it appears not.
Stepconf puts it in, but you won't be using that.

Just paste this at the bottom of a .hal file

loadusr -W hal_manualtoolchange
net tool-change iocontrol.0.tool-change => hal_manualtoolchange.change
net tool-changed iocontrol.0.tool-changed <= hal_manualtoolchange.changed
net tool-number iocontrol.0.tool-prep-number => hal_manualtoolchange.number
net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared



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Re: [Emc-users] manual tool change

[Doug]

 I need a way to execute a manual tool change.  The documentation point to a
Axis_manualtoolchange.hal file to be located in the config.  I am using the
Pico system boards for a controller.   I cannt seem to find the this hal
file or how to install it.  John if you're out there maybe you already have
this file to work with your boards. 

Doug


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Re: [Emc-users] Gcode Question

[gene heskett]

On Friday, March 18, 2011 03:30:39 PM dave did opine:

> On Fri, 2011-03-18 at 15:04 +, andy pugh wrote:
> > On 18 March 2011 14:56, gene heskett  wrote:
> > > See the users manual, section on G64 P usage, it allows you to
> > > specify the accuracy of such a followed path.
> > 
> > sxazI think that might only work for G1 moves. If so, the solution
> > might be to use G1 with a very fast feed, rather than G0.
> 
> I seem to remember  something about G00 moves only guarantee the
> endpoint not the path to get there.
> 
> Dave
> 
I believe your memory is correct, Dave.


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Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
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The heart is wiser than the intellect.

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Re: [Emc-users] Gcode Question

[Dave Caroline]

Avoiding hitting the work or tooling or whatever is on the table

Maybe time got g0 got an extra parameter for exact moves

Dave Caroline

On Fri, Mar 18, 2011 at 4:05 PM, andy pugh  wrote:
> On 18 March 2011 15:23, Stuart Stevenson  wrote:
>> if the g64 p only works for g01 moves and you still want to use g00 then put
>> a g04 dwell at the end of the g00 line
>
> I confess I am at a loss to think why you would want exact-path rapids.
>
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> atp
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>
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Re: [Emc-users] Gcode Question

[andy pugh]

On 18 March 2011 15:23, Stuart Stevenson  wrote:
> if the g64 p only works for g01 moves and you still want to use g00 then put
> a g04 dwell at the end of the g00 line

I confess I am at a loss to think why you would want exact-path rapids.

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Re: [Emc-users] Gcode Question

[Igor Chudov]

I use the following idiom

G4 p0

It guarantees a properly cornered move

On Mar 18, 2011 10:25 AM, "Stuart Stevenson"  wrote:

if the g64 p only works for g01 moves and you still want to use g00 then put
a g04 dwell at the end of the g00 line


On Fri, Mar 18, 2011 at 10:17 AM, dave  wrote:

> On Fri, 2011-03-18 at 15:04...
--
dos centavos

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Re: [Emc-users] Gcode Question

[Stuart Stevenson]

if the g64 p only works for g01 moves and you still want to use g00 then put
a g04 dwell at the end of the g00 line

On Fri, Mar 18, 2011 at 10:17 AM, dave  wrote:

> On Fri, 2011-03-18 at 15:04 +, andy pugh wrote:
> > On 18 March 2011 14:56, gene heskett  wrote:
> >
> > > See the users manual, section on G64 P usage, it allows you to specify
> the
> > > accuracy of such a followed path.
> >
> > sxazI think that might only work for G1 moves. If so, the solution might
> > be to use G1 with a very fast feed, rather than G0.
> >
>
> I seem to remember  something about G00 moves only guarantee the
> endpoint not the path to get there.
>
> Dave
>
>
>
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Re: [Emc-users] Gcode Question

[dave]

On Fri, 2011-03-18 at 15:04 +, andy pugh wrote:
> On 18 March 2011 14:56, gene heskett  wrote:
> 
> > See the users manual, section on G64 P usage, it allows you to specify the
> > accuracy of such a followed path.
> 
> sxazI think that might only work for G1 moves. If so, the solution might
> be to use G1 with a very fast feed, rather than G0.
> 

I seem to remember  something about G00 moves only guarantee the
endpoint not the path to get there. 

Dave


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Re: [Emc-users] Gcode Question

[andy pugh]

On 18 March 2011 14:56, gene heskett  wrote:

> See the users manual, section on G64 P usage, it allows you to specify the
> accuracy of such a followed path.

I think that might only work for G1 moves. If so, the solution might
be to use G1 with a very fast feed, rather than G0.

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Re: [Emc-users] Gcode Question

[Alex Joni]

http://linuxcnc.org/docview/html/gcode_main.html#sub:G61,-G61.1,-G64:

Regards,
Alex

- Original Message - 
From: "Doug" 
To: "'Enhanced Machine Controller (EMC)'" 
Sent: Friday, March 18, 2011 4:45 PM
Subject: Re: [Emc-users] Gcode Question


> When I use two G0 rapid moves the program rounds the corner.  How can a 
> make
> a rapid move in a straight line in one axis and then when finished run
> another rapid move on another axis in a straight line.  It runs straight 
> and
> then curves the end point to go into the second rapid.  Is seems to look
> ahead and cuts the corner to same time.
>
> Doug
>
>
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> 


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Re: [Emc-users] Gcode Question

[gene heskett]

On Friday, March 18, 2011 10:55:12 AM Doug did opine:

> When I use two G0 rapid moves the program rounds the corner.  How can a
> make a rapid move in a straight line in one axis and then when finished
> run another rapid move on another axis in a straight line.  It runs
> straight and then curves the end point to go into the second rapid.  Is
> seems to look ahead and cuts the corner to same time.
> 
> Doug
 
See the users manual, section on G64 P usage, it allows you to specify the 
accuracy of such a followed path.

-- 
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)


Chicago law prohibits eating in a place that is on fire.

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Re: [Emc-users] Gcode Question

[Doug]

When I use two G0 rapid moves the program rounds the corner.  How can a make
a rapid move in a straight line in one axis and then when finished run
another rapid move on another axis in a straight line.  It runs straight and
then curves the end point to go into the second rapid.  Is seems to look
ahead and cuts the corner to same time.

Doug


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