configuring tool change for multiple spindles
03 Nov 2022 12:53 #255842
by piflixe
configuring tool change for multiple spindles was created by piflixe
Dear LinuxCNC community!
I am working on a retrofit of a machine that has one main spindle and multiple side spindles. The different spindles are pushed down by pneumatic cylinders, controlled with a simple output pin, one for each tool.
Assuming to use T1 M6 for first tool, T2 M6 for second tool and so on I would like to implement a "tool changer" component in LinuxCNC that simply activates the correct output for each tool. Could anyone please point out how this is done?
Or is there a better way or behaviour for this kind of machine? I saw that custom M-Codes could be created and linked to hall pins. But I thought this was re-implementing something that should already be covered by the T command. Also I would like the command to load the corresponding offset values from the tool table.
Looking forward to your responses and thanks in advance!
I am working on a retrofit of a machine that has one main spindle and multiple side spindles. The different spindles are pushed down by pneumatic cylinders, controlled with a simple output pin, one for each tool.
Assuming to use T1 M6 for first tool, T2 M6 for second tool and so on I would like to implement a "tool changer" component in LinuxCNC that simply activates the correct output for each tool. Could anyone please point out how this is done?
Or is there a better way or behaviour for this kind of machine? I saw that custom M-Codes could be created and linked to hall pins. But I thought this was re-implementing something that should already be covered by the T command. Also I would like the command to load the corresponding offset values from the tool table.
Looking forward to your responses and thanks in advance!
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03 Nov 2022 17:07 #255854
by tommylight
Replied by tommylight on topic configuring tool change for multiple spindles
On the phone so not much help, but search for Biesse Rover, there are some retrofited in this forum, so might have configs and info.
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03 Nov 2022 17:15 #255857
by andypugh
Replied by andypugh on topic configuring tool change for multiple spindles
It is almost built-in. The tool table has columns for X, Y and Z axes to the offsets of the tool positions can be allowed for.
There isn't a built in per-tool HAL pin, but if it is as simple as every tool has one cylinder, and there is no additional carousel, then you could simply connect the tool number HAL pin (iocontrol.0.tool-number) (you might prefer pocket-number) to a "demux" HAL component
linuxcnc.org/docs/stable/html/man/man9/demux.9.html
A slight quirk,tool-number is signed-int and demux-sel-u32 is unsigned, so use the conversion component too.
linuxcnc.org/docs/stable/html/man/man9/conv_s32_u32.9.html
There isn't a built in per-tool HAL pin, but if it is as simple as every tool has one cylinder, and there is no additional carousel, then you could simply connect the tool number HAL pin (iocontrol.0.tool-number) (you might prefer pocket-number) to a "demux" HAL component
linuxcnc.org/docs/stable/html/man/man9/demux.9.html
A slight quirk,tool-number is signed-int and demux-sel-u32 is unsigned, so use the conversion component too.
linuxcnc.org/docs/stable/html/man/man9/conv_s32_u32.9.html
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29 Nov 2022 22:21 - 29 Nov 2022 22:23 #258035
by piflixe
Replied by piflixe on topic configuring tool change for multiple spindles
thanks andypugh. Today I tried implementing this in the simulation machine and it works! Can't wait to test on the real machine.
In case anyone is interested in the details, here is the section of the hal file:
In case anyone is interested in the details, here is the section of the hal file:
loadrt conv_s32_u32 count=1
loadrt demux names=demux-toolpin personality=11
net tool_number_s32 <= iocontrol.0.tool-number
net tool_number_s32 => conv-s32-u32.0.in
net tool_number_u32 <= conv-s32-u32.0.out
net tool_number_u32 => demux-toolpin.sel-u32
net tool-00 <= demux-toolpin.out-00
net tool-01 <= demux-toolpin.out-01
net tool-02 <= demux-toolpin.out-02
net tool-03 <= demux-toolpin.out-03
net tool-04 <= demux-toolpin.out-04
net tool-05 <= demux-toolpin.out-05
net tool-06 <= demux-toolpin.out-06
net tool-07 <= demux-toolpin.out-07
net tool-08 <= demux-toolpin.out-08
net tool-09 <= demux-toolpin.out-09
net tool-10 <= demux-toolpin.out-10
addf conv-s32-u32.0 servo-thread
addf demux-toolpin servo-thread
Last edit: 29 Nov 2022 22:23 by piflixe.
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