Linuxcnc servo spindle encoder with pulleys

Andy,
Thanks, but your probably right on the trans-Atlantic shipping

I had seen one of your previous videos. It looked great!

I was actually planning to doing something similar in the future with a small old Atlas Horizontal mill(you might have just given me the push I needed to prioritize that). I had looked at some of the linuxcnc pages around that.

I assume you just use a decent number encoder on your spindle(something like 1024 or just more than just an index pulse). How to you gear the spindle to the rotary table? Do you just use some arc length function in Linuxcnc (like L=(pi*r*angle)/180) then apply by the number of teeth or something?

Thanks,
Chris

Chris if I don't have the Hob you require you could purchase one, send me the Hob with a blank and I could Hob them for you if it comes to it.

That is a dilemma! They are very nicely priced, but lacking VERY important information. So, unless the buyer does some serious research, they're almost useless. Timing belt Hobs usually come in ranges. 1 - 35 teeth, 36 - 58 teeth, etc... ( strictly as an example ) That's gambling at its finest!

Back on the original topic, this fell into my lap today and I'm trying to find out if it might be a suitable replacement for our spindle encoders but cannot find any good information on it yet so do not know if it has an index pulse or not. It _DID_ come from a spindle with an orient function.





The only thing I can find is this - LINK HERE

andypugh wrote:

You might be able to work something out from here:
www.heidenhain.de/de_EN/php/documentatio...w/file-0034/file.pdf

Especially page 73

Thank you,Andy.

Unfortunately, when I looked at that it appears that someone regurgitated a bunch a symbols and letters into a bag and then emptied the bag. But I stared at it while I drank my coffee and I _think_ it means that there _is_ an index pulse in there. Correct?