Messages

5061

General Mach Discussion / Re: rotary axis setup

« on: November 23, 2006, 06:42:42 PM »

I agree Graham. I just didn't know what would be acceptable on my mill. I know, what kinda tolerance do you want to hold. I don't know yet. I do know that the max diam. would be 12" or less.

Thanks Chip,
   Looking for you to school me.

5062

General Mach Discussion / Re: rotary axis setup

« on: November 23, 2006, 05:15:56 PM »

Yes, but wouldn't it also help the speed? If 25kHz is the problem. I have a rotary table I would like to hang a motor on. It is 90-1
With microstep and 1-1 gearing 200 X 10 X 90 =180,000 steps per. rev. 4.0 seconds per rev. I'm running at 45KHz 
W/O microstep and 1-1 gearing 200 X 90 = 18,000 steps per rev. 0.4sec per rev. with a res. of .02 degrees. I think this is about 1.25 minutes. I'm just asking because I don't know. What kind of res. is acceptable?

5063

General Mach Discussion / Re: Bridgeport extrak retrofit

« on: November 23, 2006, 03:54:34 PM »

Have you got any pictures? I would love to see some close ups of the countrweight set up.

5064

General Mach Discussion / Re: rotary axis setup

« on: November 23, 2006, 03:43:53 PM »

Just a question. Does it matter? It is going to take the same amount of step pulses per rev. right? Is it going to matter if you set it up for 1 minute, 1 degree, or one reveloution? A couple of thoughts on things that might help would be to do a belt drive (1-3 or 4) and get away from micro stepping?

HAPPY THANKSGIVING!

5065

General Mach Discussion / Re: tuning steppers in mach 3

« on: November 22, 2006, 07:26:29 PM »

If your PS is rated higher than you will be pulling (AMPS, NOT VOLTS)that is a good thing. More room to add more stuff.    You would not want your motors to pull more than your drive is rated for. Think of the KV size as the size of the gas tank. You never want to run dry.

5066

General Mach Discussion / Re: VFD Speed Control

« on: November 22, 2006, 02:54:55 PM »

Yes, that is what I was talking about. All one piece. Maybe help will be here soon.

5067

General Mach Discussion / Re: VFD Speed Control

« on: November 22, 2006, 02:32:23 PM »

I wish I knew more about this for you. I had asked earlier if the gearing is one-one. I think it is direct drive isn't it? I think that with two adjustments that could be causing a problem, I'm not sure though. Some one will help clear this up for you. I'm going to send one of the smart guys a PM for you.

5068

General Mach Discussion / Re: VFD Speed Control

« on: November 22, 2006, 02:01:36 PM »

What are you using to sense spindle speed? Is the motor to spindle gearing one to one?

5069

General Mach Discussion / Re: mach 3 and vista

« on: November 22, 2006, 12:38:38 PM »

Are you saying that you are running Mach on a PC with Vista OS and all is well?

5070

General Mach Discussion / Re: rotary axis setup

« on: November 22, 2006, 12:11:24 PM »

Not sure yet what the A axis diameter actually does. Is this the stock material diameter or the finished work diameter?

Where is this at? In Mach or a cam package?
If i neede 400.2 i would try it and see.