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Messages - DMBGO

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181
General Mach Discussion / Re: Step / Velocity mode
« on: October 22, 2010, 08:17:00 AM »
Thanks Hood,
Your axis are definitely a fair bit smoother than mine. I think I'll try your suggestion and hook the mpg up to port 3 on the SS. I appreciate you going to the trouble.
I am still mulling over the step jog thing, I would have dropped it if Ray hadn't said he had it working.
Ray, if you read this, what version of Mach are you running?
Cheers
Dave

182
General Mach Discussion / Re: Anyone walk me thru the OD Arc turn wizard?
« on: October 21, 2010, 04:01:02 AM »
Found it.

If you go to this website

http://cnc.novalab.org/mach_files.htm

and look about 4/5 of the way down the page in the mastercam9 section they say "Output is in the RADIUS mode, to follow MACH3 wizards convention"

I dont think this is where I saw it before, I just found it by googling mach3 wizards "radius mode"

Also this thread is probably relevant http://www.machsupport.com/forum/index.php?topic=10578.0

Cheers
Dave

183
General Mach Discussion / Re: Anyone walk me thru the OD Arc turn wizard?
« on: October 21, 2010, 03:52:12 AM »
I had exactly this problem when I first tried this wizard, although not for quite the same reason as you, for some reason I thought that X0 was the outside of the stock instead of the centre of the stock.

(Anyway I made it work by making X the centre.)

I realize that this probably wont fix your problem, I think what will fix it is changing to radius mode.

I read somewhere that the wizard's output is designed for radius mode, I thought it was in the manual, but I cant find it now that I look.


184
General Mach Discussion / Re: Step / Velocity mode
« on: October 21, 2010, 03:30:08 AM »
BTW Hood, if you want to put your video back, I can watch it this evening, but don't go to any trouble.

185
General Mach Discussion / Re: Step / Velocity mode
« on: October 21, 2010, 03:27:21 AM »
Right, I've tried it with an MPG connected directly to the PP without the smooth-stepper enabled and things are just the same, so it doesn't look like the smooth-stepper is affecting the results.
I even recalibrated the MPG and set the max speed and step / velocity change over to 1000 detents / sec, to ensure that it would be stepping if it was going to, and it didn't, it just ran in velocity mode.
It was quite smooth, probably a fair bit smoother than the serial mpg, but that's probably to be expected.

Not sure where to go from here, perhaps into the house for a cuppa? :)

186
General Mach Discussion / Re: Step / Velocity mode
« on: October 21, 2010, 03:05:20 AM »
Hi Hood,
That was good timing, I just connected a spare mpg to the PP, just about to try it. back in a few mins

187
General Mach Discussion / Re: Step / Velocity mode
« on: October 20, 2010, 10:42:15 PM »
Hi Hood, your video seems to be gone from you-tube (video removed by user). I will try one of my spare encoders on the parallel port today and report back. I am starting to wonder if it is a configuration issue somewhere if it works for Ray.
Time will tell.
Cheers
Dave

188
General Mach Discussion / Re: Step / Velocity mode
« on: October 20, 2010, 09:02:49 AM »
I wonder if it's my inexperience with mach3 that makes me put such emphasis on this?
I would have thought that this would have been discussed and resolved ages ago if it was a real issue. I suspect that once I've spent a bit more time on Mach I will realize that it's not particularly important.
Having said that, when showing off one's new cnc machine to the uneducated, it is nice if it moves in a smooth and controlled manner :)

189
General Mach Discussion / Re: Step / Velocity mode
« on: October 20, 2010, 07:10:56 AM »
Rich we are OT, but such is life, I had the same idea re 2 mpgs on the lathe, but they are still in their boxes and probably will stay ther for the time being.
Hood, I'm using Scott's plugin with Peter's pendant, but to switch between multi step and velocity, I have to do multiple button presses, a switch sounds easier. I' m sure Scott in his normal helpful manner will change his plugin to remove multi step from the button push cycle if I ask him :) my lathe is quite a distance from the pc screen, so at the moment, i have trouble seeing what mode I'm in. This will change! I was trying to be nice to the SS, which is very scared of my VFD.

190
General Mach Discussion / Re: Step / Velocity mode
« on: October 20, 2010, 06:30:22 AM »
Hi Rich, sounds like you've got a good system that works. I've only just got my lathe cncing, so I have been experimenting to find the best way of positioning etc. Part of the process is finding out what does and doesn't work, so I appreciate your comments
thanks
Dave

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