Messages

161

General Mach Discussion / Re: Kernel speed error on startup

« on: March 11, 2014, 08:27:07 PM »

I would think it would have to be set in the 1000's to cause an error like that.

162

General Mach Discussion / Re: Turret tool changer and its set up?

« on: March 11, 2014, 08:26:00 PM »

Sorry Hood, the turret is a stepper. 200 step/1.8 degree.

163

General Mach Discussion / Kernel speed error on startup

« on: March 11, 2014, 03:52:41 PM »

That can't be it. Those are very conservative speeds.

164

General Mach Discussion / Re: Boxford vmc260 to mach3 conversion

« on: March 11, 2014, 03:06:34 PM »

There is a link to someone using the same driver here.
http://www.cnczone.com/forums/general-cnc-machine-related-electronics/8999-digiplan-sd3-drives.html

Have you thought about what BOB and such you plan to use (smooth stepper)? You could reuse all of your power supplies most likely. The Gemini speed control board probably has its own 0-10v supply which can route thru your BOB depending on the model you choose, if not you can add a board that will output the signal required CNC4PC offers a few different types as do others.

165

General Mach Discussion / Re: Boxford vmc260 to mach3 conversion

« on: March 11, 2014, 02:58:50 PM »

   Though I am going to check it out on your link. Try using tapatalk and post the pictures direct on each forum. Too many times I have seen the host site change or whatever and the pics disappear for future users. Plus people are more prone to help if they see the items right in front of them. For some strange reason I was under the impression you were using your phone to post.

166

General Mach Discussion / Re: Kernel speed error on startup

« on: March 11, 2014, 02:54:59 PM »

Look in the velocity setting of motor tuning. What do you have it set on? Accel?

 Unlikely to be accel if the motor is smooth. I think it if the accel was so high that Mach is telling you it cant generate enough signals for that axis it would be stalling or you have a serious gear reduction in your drive system. In actuality I would think the same with the velocity but maybe you arent using the potential rapids the machine has saved.

167

General Mach Discussion / Turret tool changer and its set up?

« on: March 11, 2014, 02:47:17 PM »

   Presently I have a Dyna DM3000 lathe with a 6 position turret tool changer. I have had it running in a few different configurations over the years. Never really satisfied with each set up, mostly due to my lack of understanding of the options and how a professional lathe should be set up.

   Inevitably someone comes along with a much nicer conversion and you realize the options you left out or misunderstood or figured out how to implement since the last assembly.

   When I first got the lathe, I was given the tool change macro written by a generous forum user with the same model of lathe. The macro works fine however it only travels 1 direction, rotates in multiples of 60 degrees depending on which tool is requested and then backs up a few degrees into the pawl (that is screw adjustable for tool height).

   All of the original literature on this lathe states that the tool changer is bidirectional. As I learn more, I see MRM on the zone dissect the tool changer and discover there is a 24vdc solenoid that can retract the pawl and truly allow bidirectional rotation. I now have an extra 24vdc power supply in my cabinet along with a relay just for that solenoid. My thought is that it will be wired as would any auxiliary feature such as coolant, mist, spindle etc. There are also a series of photo interrupters on the turret shaft but I am not sure of what they are, or are there for, just yet. I am guessing rotational verification or positioning of some kind.

   So my question is this. How would I write a macro that can

A. Go the shortest distance to the next tool?

B. If going the direction against the pawl, to lift the solenoid during that directions rotation but let it activate upon the backing into the pawl?            I still believe the few degree back up will be required for repeatable tool height.

C. If you do understand what the other interrupters are for, please chime in.

168

SmoothStepper USB / Re: ESS and Pokeys

« on: March 11, 2014, 02:22:38 PM »

   Just curious as to why the need for the pokeys the more I study it (since you already have the ESS). With a total of 3 potential ports with the ESS did you need more I/O's? Can the other available ports of the ESS mimic or do the same things as the Pokeys? Or does the Pokeys deal with or distribute signals in a different way?

  I do like the graphical interface of the PoBlocks software from what I have seen but is it a true advantage over the SS? (only referring to an ESS).

  At this moment I am barely using the entire 1st port. Btw I too am running an ESS on this machine (though only if spindle indexing, rpm  and backlash comp can be implemented in Mach 4) I do want to add an MPG (2 pins if I understand correctly), an axis selector (2 axis, therefore I am guessing 2 pins) and a resolution value .1, .01, .001, .0001 (again guessing 4 pins).
So if i am anywhere close to understanding this, I will need to use an additional 8 pins (input). Am I close?

169

General Mach Discussion / Re: Need help with steppers- changed driver microstep now travel is way off

« on: March 11, 2014, 02:09:00 PM »

First of all your steps werent wasted. I would use the higher amount of steps my self. But for the sake of calculations

If you chose 1/4 micro stepping with a 200 step/1.8 degree

200 x 4 x 2.54=2032
200 x 8 x 2.54=4064 (not 4096) though I think you just transposed the numbers of your 5 & 10mm screws

Your formula or thinking is correct. Did you restart Mach after the changes?

Will your controller let you set a 10x microstep?
200 x 10 x 2.54=5080 or a theoretical step move of 1"/5080=.00019685

170

General Mach Discussion / Re: Boxford vmc260 to mach3 conversion

« on: March 11, 2014, 01:32:32 PM »

I responded on the zone. Post pics of the mechanicals and the electronics. Surely we can figure it out pretty quick.