Re: [Emc-users] Stopping program for tool change

2014-01-12 Thread Mike Eitel
Michael Haberler mail17@... writes:

 
 John,
 
 Am 11.01.2014 um 19:57 schrieb John Alexander Stewart ivatt260@...:
 
  Hi all;
  
  I've got a large bit of steel milling to do, and am changing tools
  mid-stream every 1mm or so of depth. (6mm end mills, 12.7mm depth)
  
  Is it possible that the stop program execution causes loss of position?
  
  What I'm doing is, when the end mill is close to a point where not much
  milling is being done, I:
 - stop the program;
 - change end mills;
 - zero the Z axis based on this end mill;
 - edit the program so that the tool will start off where I want it;
 - and, go.
  
  I know that there's probably a better way of pausing program operation to
  do a tool change and Z axis touch off, but I can't think that to do at the
  moment.
  
  What do *you* do, to change tools mid-stream?
 
 this is exactly what master
 http://git.linuxcnc.org/gitweb?
p=linuxcnc.git;a=tree;f=configs/sim/axis/remap/manual-toolchange-with-tool-
length-
switch;h=07587d5cc91ed661e0face3b73aa4eadc7ef055b;hb=6eadae4c8ef1f5d614d06626b
9e05e056d46c8f8 does
 
 actually it does a bit more - namely jog to a TLO sensor, measure, set 
offset and continue
 
 give it a try to get the hang of it
 
 - Michael
 


Hi
   Is it possible to run on 2.5.3 ?
   If yes whats to do?
Thx Mike







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Re: [Emc-users] Stopping program for tool change

2014-01-12 Thread Michael Haberler

Am 12.01.2014 um 10:38 schrieb Mike Eitel m...@eitel.ch:

 Michael Haberler mail17@... writes:
 
 
 John,
 
 Am 11.01.2014 um 19:57 schrieb John Alexander Stewart ivatt260@...:
 
 Hi all;
 
 I've got a large bit of steel milling to do, and am changing tools
 mid-stream every 1mm or so of depth. (6mm end mills, 12.7mm depth)
 
 Is it possible that the stop program execution causes loss of position?
 
 What I'm doing is, when the end mill is close to a point where not much
 milling is being done, I:
   - stop the program;
   - change end mills;
   - zero the Z axis based on this end mill;
   - edit the program so that the tool will start off where I want it;
   - and, go.
 
 I know that there's probably a better way of pausing program operation to
 do a tool change and Z axis touch off, but I can't think that to do at the
 moment.
 
 What do *you* do, to change tools mid-stream?
 
 this is exactly what master
 http://git.linuxcnc.org/gitweb?
 p=linuxcnc.git;a=tree;f=configs/sim/axis/remap/manual-toolchange-with-tool-
 length-
 switch;h=07587d5cc91ed661e0face3b73aa4eadc7ef055b;hb=6eadae4c8ef1f5d614d06626b
 9e05e056d46c8f8 does
 
 actually it does a bit more - namely jog to a TLO sensor, measure, set 
 offset and continue
 
 give it a try to get the hang of it
 
 - Michael
 
 
 
 Hi
   Is it possible to run on 2.5.3 ?

no, master is required - that is the remapping work which has been lingering in 
master for about two years

   If yes whats to do?

run a master buildbot build, or build yourself from source

-m

 Thx Mike
 
 
 
 
 
 
 
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[Emc-users] Stopping program for tool change

2014-01-11 Thread John Alexander Stewart
Hi all;

I've got a large bit of steel milling to do, and am changing tools
mid-stream every 1mm or so of depth. (6mm end mills, 12.7mm depth)

Is it possible that the stop program execution causes loss of position?

What I'm doing is, when the end mill is close to a point where not much
milling is being done, I:
- stop the program;
- change end mills;
- zero the Z axis based on this end mill;
- edit the program so that the tool will start off where I want it;
- and, go.

I know that there's probably a better way of pausing program operation to
do a tool change and Z axis touch off, but I can't think that to do at the
moment.

What do *you* do, to change tools mid-stream?

Confused;

John.
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Re: [Emc-users] Stopping program for tool change

2014-01-11 Thread Michael Haberler
John,

Am 11.01.2014 um 19:57 schrieb John Alexander Stewart ivatt...@gmail.com:

 Hi all;
 
 I've got a large bit of steel milling to do, and am changing tools
 mid-stream every 1mm or so of depth. (6mm end mills, 12.7mm depth)
 
 Is it possible that the stop program execution causes loss of position?
 
 What I'm doing is, when the end mill is close to a point where not much
 milling is being done, I:
- stop the program;
- change end mills;
- zero the Z axis based on this end mill;
- edit the program so that the tool will start off where I want it;
- and, go.
 
 I know that there's probably a better way of pausing program operation to
 do a tool change and Z axis touch off, but I can't think that to do at the
 moment.
 
 What do *you* do, to change tools mid-stream?


this is exactly what master 
http://git.linuxcnc.org/gitweb?p=linuxcnc.git;a=tree;f=configs/sim/axis/remap/manual-toolchange-with-tool-length-switch;h=07587d5cc91ed661e0face3b73aa4eadc7ef055b;hb=6eadae4c8ef1f5d614d06626b9e05e056d46c8f8
 does

actually it does a bit more - namely jog to a TLO sensor, measure, set offset 
and continue

give it a try to get the hang of it

- Michael

 
 Confused;
 
 John.
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Re: [Emc-users] Stopping program for tool change

2014-01-11 Thread Jon Elson
On 01/11/2014 12:57 PM, John Alexander Stewart wrote:
 Hi all;

 I've got a large bit of steel milling to do, and am changing tools
 mid-stream every 1mm or so of depth. (6mm end mills, 12.7mm depth)

 Is it possible that the stop program execution causes loss of position?

 What I'm doing is, when the end mill is close to a point where not much
 milling is being done, I:
  - stop the program;
  - change end mills;
  - zero the Z axis based on this end mill;
  - edit the program so that the tool will start off where I want it;
  - and, go.

 I know that there's probably a better way of pausing program operation to
 do a tool change and Z axis touch off, but I can't think that to do at the
 moment.

 What do *you* do, to change tools mid-stream?


There is a run from line option in the edit menu.  You can 
restart
the program from any line.  There are problems if the program
has multiple calls to the same subroutine, however.  If it
is just continuous G-code moves, however, this works, so you
don't have to edit away the beginning of the program.

Jon

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Re: [Emc-users] Stopping program for tool change

2014-01-11 Thread John Alexander Stewart
Thanks all - ran my machine with tool in air, spindle off, for just over 3
hours, and it lost about 1/2mm in the X direction, so it looks like I'll
have to re-visit the G540 tuning, and so forth.

I had this issue a while ago, and thought that it was solved, but it's
still there, after 3 hours.
(quite a few arcs are being cut, so it exercises the ability for both X and
Y to track properly)

Sigh - here comes the screwdriver set again...

(Michael - had a bit of a look, will look further, Jon - did not know about
the run from line, either. Both will certainly help once I get this
machine back in order)


Thanks, John.

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Re: [Emc-users] Stopping program for tool change

2014-01-11 Thread andy pugh
On 11 January 2014 22:39, John Alexander Stewart ivatt...@gmail.com wrote:

 (Michael - had a bit of a look, will look further, Jon - did not know about
 the run from line, either. Both will certainly help once I get this
 machine back in order)

run from line only works on files with line-numbers in Touchy. This
really annoyed me at first, but it has grown on me. I now insert line
numbers only at likely restart points.


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If you can't fix it, you don't own it.
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