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Author Topic: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)  (Read 20968 times)

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Offline Jeff_Birt

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Re: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)
« Reply #10 on: May 16, 2007, 05:33:17 PM »
Quote
Try GetOEMLED(23) = false it is not a user led

Doh!  Thanks, I'll give that a go in the AM.  I spent a good part of the day ripping apart the X and Y axis and cleaning things up.  Plan to get Z done tomorrow.  I spent some time today looking for a refernece design (other than a RC network) for an PWM to voltage converter.  I always like to see what others have tried before designing my own.  Anyone know of one on teh web?

Thanks!
Happy machining , Jeff Birt
 
Re: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)
« Reply #11 on: May 16, 2007, 09:46:43 PM »
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com

Offline Jeff_Birt

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Re: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)
« Reply #12 on: May 17, 2007, 10:18:21 AM »
Thanks Brian!  Changed teh code as you suggested and now all is fine.  The Digispeed looks great, a very flexible product indeed, I like how they keep the manual pot as a spped override of sorts.  I guess first I will have to see what voltage reference range the built in spindle driver board on the Dyna uses and go from there.
Happy machining , Jeff Birt
 

Offline Jeff_Birt

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Re: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)
« Reply #13 on: May 23, 2007, 04:59:36 PM »
I got the old Dyna tuned in pretty well but I had to back the rapid down to 15 IPM to avoid lost steps.  I think that's as good as the stock drivers/steppers will do, though I have a hunch that new drivers would work wonders.  The backlash in both X and Y stinks at 0.002" but any more tweaking on the anti-backlash nut stalls the axis.   I ran a 30,000+ line program today (took 2+ hours) and all went well other than me futzing up the tool change (wrong Z offset) so the finish pass left a lot to be desired.  But, heck is was just wax after all.

 Now that it is running good I would like to get some new tool holders; called Dyna today and they can only get the 1/4" shank (guess I could bore it out) for $85 and the 'quick change nut' is $70.  Does anyone know whay type of tool holder these machiens use?  There is a measured drawing in the manual but it does not state if it is a standard taper or not.

Thanks,

Jeff

Happy machining , Jeff Birt
 

Hood

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Re: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)
« Reply #14 on: May 23, 2007, 05:06:12 PM »
Can you post a scan of the tool dimensions, maybe QC30 when you mention "quick change nut"

Hood

Offline Jeff_Birt

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Re: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)
« Reply #15 on: May 23, 2007, 05:25:40 PM »
I guess that would have made sense  ::)

Happy machining , Jeff Birt
 

Hood

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Re: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)
« Reply #16 on: May 23, 2007, 05:52:40 PM »
That is a tiny taper, sorry no idea what it is :(
Hood

Hood

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Re: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)
« Reply #17 on: May 23, 2007, 05:59:03 PM »
I see now how it works, the collets go direct into the spindle. I just did a google for ESX16 and heres one place http://www.reneswiss.com/Catalog1/esxser.htm

Hood

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Re: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)
« Reply #18 on: May 23, 2007, 06:01:25 PM »
Looks like ESX16 and ER16 might be the same, have a look here for more tooling http://www.floydautomatic.co.uk/arbors.htm

Offline Jeff_Birt

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Re: It's Alive! (El Cheapo Dyna 2400 Mach III conversion)
« Reply #19 on: May 23, 2007, 08:14:50 PM »
Thanks Hood, that last link nailed it I think.  I feel silly now for asking as I guess I should have assumed that maybe the ESX16 meant something.  Anyhow, thanks again, have to see how to get these in the US now.
Happy machining , Jeff Birt