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lathe help

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18 Mar 2018 16:45 - 18 Mar 2018 16:50 #107499 by warwickben
lathe help was created by warwickben
i have a general understanding of setting up machine with Linuxcnc. i help run the machine shop at a maker space.
they had a small pcb mill that i converted to using a arduino setup, so i can snag the linux pc for the lathe conversion ive started on.

one of the members gave me a 5 axis break out board to help with the project. the original break out board had built in drivers that were to small for the lathe steppers. and not enough inputs

its one of the basic parallel port board you see on amazon.
i understand how to connect the stepper drivers. i was going to link all the end stops/homes to one pin to save inputs.

the two things im confused about.

first are the encoders for the spindle. i know i need one with 1 slot and another with more slots so i can use the lathe for threading.
can i connect these two inputs to the unused limit switch pins?

second is how to turn the spindle on and off and control the speed with this board.
im converting a mini lathe 7x12 . i figure i need to buy some other stuff but kinda confused.
Last edit: 18 Mar 2018 16:50 by warwickben. Reason: spelling etc

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18 Mar 2018 17:53 #107502 by Clive S
Replied by Clive S on topic lathe help

can i connect these two inputs to the unused limit switch pins?


Yes but you will need to connect at least 12V up to 24V at the connections near the blue relay if I remember it is the centre pair.
This is needed so that the input will work.
Re the encoder for threading 60 slots + index will work OK.

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19 Mar 2018 03:32 #107530 by warwickben
Replied by warwickben on topic lathe help
Thanks for the info .
I got the axis moving today .

Now only thing I need to figure out is how to control the spindle.

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19 Mar 2018 10:07 #107538 by andypugh
Replied by andypugh on topic lathe help

Now only thing I need to figure out is how to control the spindle.


That board has a spindle analogue output, so I would suggest using that.

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19 Mar 2018 17:41 #107553 by warwickben
Replied by warwickben on topic lathe help
Andypugh
I understand that much . I need to figure out what todo with those signals on the machine side .

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19 Mar 2018 19:05 #107559 by andypugh
Replied by andypugh on topic lathe help
Stepconf should be able to do it all, set up pin 1 as Spindle PWM.

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19 Mar 2018 20:37 #107563 by warwickben
Replied by warwickben on topic lathe help
I understand my options on the break out board . I’m just confused At this point what I need todo with the mini lathe 7x12 , any thing else i need to buy etc .

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19 Mar 2018 20:39 #107564 by andypugh
Replied by andypugh on topic lathe help
Is your question about LinuxCNC or about the lathe speed controller?

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19 Mar 2018 20:40 #107565 by warwickben
Replied by warwickben on topic lathe help
What i need todo to the lathe speed controller to work with this bord.

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19 Mar 2018 21:49 #107571 by andypugh
Replied by andypugh on topic lathe help
Is it a KBIC controller?

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