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Author Topic: lathe threading problem  (Read 4447 times)

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Offline Davek0974

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Re: lathe threading problem
« Reply #10 on: October 21, 2016, 07:53:30 AM »
Just a thought but does the "Index" led flash on the diagnostics page when it sees the sensor input?
Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives.
Plasma table, Mach3 V062, Step motors, C&CNC THC.

Offline RICH

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Re: lathe threading problem
« Reply #11 on: October 21, 2016, 08:49:30 AM »
Quote
i am getting 5.08 volts working & 0.8 volts not working this at index pulse board
at the input pin connection i am getting the same voltage readings

Go to diagnostics and see the condition of the index trigger LED per the ref given in the write up. In that condition the spindle is off.

The index board that you are using seems like it is working, BUT, the input must be seen by Mach.

RICH

BTW, I will be out and about for a few days ...... your in good hands with the other folks. :)
 

« Last Edit: October 21, 2016, 08:56:09 AM by RICH »
Re: lathe threading problem
« Reply #12 on: October 21, 2016, 11:41:16 AM »
hi all
i have looked at the index pulse signal on the diagnostics page & it will flash about 6 times straight after each other &  then it seems to miss about 3 flash's & then does the six flash's
the control board for the spindle index has an led on it that flash's with the pulses this seems to be flashing on every pulse signal
hood - i will try 0 on the debounce on sunday when i next go to my workshop , i have also tried the input in 2 diferent positions on the breakout board & still get the same results
thank you all for your replies
robert
« Last Edit: October 21, 2016, 11:47:07 AM by ministeam »
Re: lathe threading problem
« Reply #13 on: October 23, 2016, 02:39:41 PM »
 hi
looks like i have found my problem ,does anybody know if there is a design for an index pulse board on here or the internet that will hopefully solve my problem or maybe a trade supplier that does a reliable item that works all posts will be answered
thank you
robert

Offline RICH

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Re: lathe threading problem
« Reply #14 on: October 23, 2016, 02:42:35 PM »
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looks like I have found my problem


What was the problem?  

RICH
« Last Edit: October 23, 2016, 02:44:26 PM by RICH »

Offline RICH

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Re: lathe threading problem
« Reply #15 on: October 23, 2016, 02:58:53 PM »
Quote
does anybody know if there is a design for an index pulse board

You don't need anything special.
Hood and myself have used the same and quoting Hood " an Optek OPB917B it has everything you need except for a limiting resistor for the LED, 220 Ohm is what I use when powering from  5V". Use  just the opto on the Sherline lathe.

Some folks put and additional circuit after the opto to make sure the signal is a nice clean square wave.

I currently use a Halls effect sensor as it uses a small magnet for detection. It is not to cheap to buy, works great. and made for easy mounting on my Atlas lathe.

Just note that some types of sensors will not be work well ie; a reed switch may not sense quick enough for higher rpm readout. It depends on the device. So read the device specs.

RICH
Re: lathe threading problem
« Reply #16 on: October 23, 2016, 03:03:19 PM »
hi rich
have you got a drawing i could have , i am not very good with electronics , i am a turner/fitter by trade
thank you
robert

Offline RICH

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Re: lathe threading problem
« Reply #17 on: October 24, 2016, 07:18:58 AM »
Schematic attached.

RICH
Re: lathe threading problem
« Reply #18 on: October 24, 2016, 11:22:56 AM »
hi rich
thank you for your sketch that will help me a lot
i  ordered an optek opb017b this morning hopefully it will be delivered tomorrow morning thank you for all your help
robert

Offline RICH

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Re: lathe threading problem
« Reply #19 on: October 24, 2016, 12:18:23 PM »
I hope it's correct. You should download the spec sheet from the Optek site.
 Glad I could help.

BTW,
How many of those C3 boards did you go thru?  3 or so?


RICH