jepler_ is now known as jepler
cradek, Nice job on the threading, Chris.
I'm hoping to have what the industry calls "go/nogo" gages at fest so we can prove the thread is good.
I know the pitch is right, so I suppose it's just a matter of figuring out the correct depth for your gauges to work
Don't know what size gages I can get.
And they won't be NIST certified but should be good enough for us.
I know what go/nogo gauges are like for slots etc, are these that you're talking about just like two nuts?
You like the Sherline?
yeah, I was surprised that it's much bigger than mine
Yes. Very similar. One nut must go on all the way the other less than a 1/4 turn.
They test max and min pitch and major and minor diameters.
the wiring was a mess but I removed it (kept it intact) and redid it for emc2
Fantastic test bed for this stuff.
maybe I'll be able to get spindle speed control working too, so we can work on constant surface feed
Does this use the mightydrive
or your own.
Okay. I know it then.
CSS would really get us close to full lathe ability.
yeah, other than that, it's just interpreter work I think
Looks like it to me.
how is your little lathe equipped? Can it do speed control?
Smithy has two sizes of small lathes for retrofit.
No. Not as is.
We might be able to find analog controlled dc drives that would work.
there is something on fred's sherline but it's a bit of a mystery to me
I've got several old GE drives in the shop but the caps are bad.
got a pic?
I think it takes a 0-12v analog input
I might be able to pull off 0-5 using hal freqgen, which might be enough for testing
ideally, I also need to get at least the home switches working
Did Matt put home switches on this?
someone put full switches on it
I know he did it for NIST's mill
I think that's the one I have
unfortunately there aren't enough inputs for all the switches and the encoder without some rewiring
(I hate to mess up the existing wiring too much)
Right. How about a second parport?
I have a laptop that agrees with rtai now - I'd like to continue using that for workshop
Oh. Okay. Or I could build up a box for your testing.
Homes could be a single pin though.
right, it should be fine
I could also put all the limits together on the remaining pin, with a bit of rewiring
but if I have homes and soft limits, it'll be fine
Get one of those little Rad Shack printer jumper boxes?
yeah that's the setup already, the mightydrive inputs are not at all like the parport pinout
If they can still be found.
they had three, I bought them all
Sorry to see those boxes go away.
they appeared to have been in the store for many years.
RS will have no hobbyist stuff left soon. a bit sad, but we have mouser.
cradek, How about using one of JonE's pwm amps for that spindle motor?
Or DaveE has more of the ServoDynamics drives like we used on the Mazak.
let's figure out what it already has first... It might already be working
so smithy will have stuff there for us to work on?
I'm trying to get a stepper mill there for Steve Stallings to test some stuff with.
I don't think the lathes will be here by then.
did you get the encoder for yours yet? I think you said you ordered it
Yes I did but used it on another job. Will order a second this week.
Or maybe not since you have that unit.
the problem will be when I have to give this back, and we don't have a cnc lathe anymore
here's a cute dc drive that would work. http://www.exman.com/ecdcd.html
The external speed display would show that css was working.
how does it get feedback?
looked like 0-5 volt analog
I'll ask Matt about the drive on that lathe in a few minutes. He's supposed to call.
great, any information will help
I figured that nut test jpg was a pic of me holding a multimeter with the leads in my ears.
heh nope, I'll post that one later
rayh: you around?
ray, if you get this, going to rolands wednesday, scouting out japax
alex_joni_away is now known as alex_joni
[Global Notice] Hi all. Just a reminder. Google's Summer of Code ( http://code.google.com/soc/
) is coming up again, and the mentoring organizations have pretty much all been selected. Coder applications start on May 1.
[Global Notice] Soc has moved to SlashNet this year, but it seemed to be a good idea to have an unofficial, local channel here on freenode for mentoring groups and participants.... so we've set up ##googlesummer .... if you're involved, or hoping to be involved, with Soc 2006, please stop by. As always, be nice, be chilled, and have a great evening! :)