Tool Change on Lathe with rack tool container

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12 Mar 2014 23:59 - 15 Mar 2014 02:25 #44741 by RobotMatic
Hi.
I' m using a lathe with a rack tool container. It is not a magazine ! It is not a manual tool change ! .

The rack tool container is a table with a lot of tools.

I need a continuous change of tools .

Example

T1M6
G0G90.......
G28G91Z0
T2M6
G0G90......
G28G91Z0.
T3M6
G0G90......
G28G91Z0..


In my linuxcnc. I have to press the continuous button between tools. I need to eliminate the manual change of tools.

How can I do this with Linuxcnc?

Regards,

Eduardo
Last edit: 15 Mar 2014 02:25 by RobotMatic.

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13 Mar 2014 00:19 #44742 by cncbasher
their are many ways to control a toolchanger , but we need more information , details of your machine , type of toolchanger and how it is connected etc , stepper motor or servo
you type of interface to your pc etc , given this information we can advise further

the most common way is using the inbuilt plc in linuxcnc 'classic ladder , also this can be done by writing a 'component ' to link in motor and encoder / switches for the toolchanger

any wiring diagrams available etc ? , more information the better
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13 Mar 2014 10:26 #44749 by andypugh

tthe most common way is using the inbuilt plc in linuxcnc 'classic ladder , also this can be done by writing a 'component ' to link in motor and encoder / switches for the toolchanger

For a rack-type toolchanger where tool-change happens by axis movements then the third option of G-code re-mapping might be appropriate.
www.linuxcnc.org/docs/devel/html/remap/structure.html
The development branch includes a demo of a G-code remapped rack changer: configs/sim/remap/rack-toolchange
That will be mainline in 2.6 and can be used with some confidence at the present time.
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13 Mar 2014 18:21 #44755 by BigJohnT

Hi.
I' m using a lathe with a rack tool container. It is not a magazine ! It is not a manual tool change ! .

The rack tool container is a table with a lot of tools.

I need a continuous change of tools .

Example

T1M6
G0G90.......
G28G91Z0
T2M6
G0G90......
G28G91Z0.
T3M6
G0G90......
G28G91Z0..


In my linuxcnc. I have to press the continuous button between tools. I need to eliminate the manual change of tools.

How can I do this with Linuxcnc?

Regards,

Eduardo


Remove the manual tool changer component and connect
iocontrol.0.tool-prepare to iocontrol.0.tool-prepared
iocontrol.0.tool-change to iocontrol.0.tool-changed

JT
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13 Mar 2014 19:30 #44758 by andypugh
Don't forget that you need a G43 to apply the tool offsets.
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13 Mar 2014 22:42 #44762 by RobotMatic
Thank you for reply !!

Today my lathe worked !!!!!!

Solution by JT

Remove the manual tool changer component and connect

net tool-prepare iocontrol.0.tool-prepare => iocontrol.0.tool-prepared
net tool-change iocontrol.0.tool-change => iocontrol.0.tool-changed

but when M6 is activate , turns off the splinde. it is not necesary !

Regards

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13 Mar 2014 23:19 #44763 by andypugh

but when M6 is activate , turns off the splinde. it is not necesary !


That's an INI file switch:
www.linuxcnc.org/docs/html/config/ini_co..._sub_emcio_section_a

TOOL_CHANGE_WTH_SPINDLE_ON = 1
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