Messages

151

General Mach Discussion / Re: Jogging A axis at .0001 problem

« on: January 22, 2007, 10:33:29 PM »

Hi,
When you say gearing I am not sure what you mean unless you are refering to the worm gear. The rotary table is a Sherline NC ready Rotary Table  8730 with 72 tooth worm gear. Here is Sherlines comments:

The table is 2" high and 4" (100mm) in diameter. The main components have been machined from solid bar stock steel, and the complete unit weighs seven pounds. The table has been engraved with a laser, giving sharp and precise lines every 5°, numbered every 15°. These lines are calibrated with the 72-tooth worm gear that is driven by the handwheel. The handwheel is divided into 50 parts, making each line on the handwheel 1/10°. This allows a circle to be divided into 3600 increments without interpolation. Seventy-two revolutions of the handwheel rotate the table one revolution.

Translated that means a 360 degree turn of the stepper (1.8 degrees motor) moves the table 5 degrees.

That is for the manual table. The only difference on the CNC, is that a double shaft stepper is put on and the handwheel in then put on the back of the stepper.
It is being driven by an 8760 controller box. The specs are here http://www.sherline.com/8760pg.htm

Hopefully that answers your question.

Regards Lee

152

General Mach Discussion / Re: Jogging A axis at .0001 problem

« on: January 22, 2007, 10:02:22 PM »

Hi Chip,
Would you please give me an example of setting the A Axis Dia? Is it supposed to be set to the Dia of the rotary table (4")? Also, are you using the Sherline steppers and Sherline controller? I have the steps set to 16000 for X Y and Z and it works fine. I also have it set for 16000 for A. The actual correct number should be 160 but that causes the stepper to run super slow and make noise. I played with Vel and Acc but it didn't seem to make any difference. I can try the numbers you suggested in the morning.

Thanks
Lee

153

General Mach Discussion / Re: Jogging A axis at .0001 problem

« on: January 22, 2007, 04:40:20 PM »

Hi Chip,

Thanks. That helps. I thought it was just me that couldn't find the documentation on formatting. I'll work on it later today.

Regards
Lee

154

General Mach Discussion / Re: Jogging A axis at .0001 problem

« on: January 22, 2007, 02:24:56 AM »

Yes it helps.  My steps are set to 16,000 (Sherline 1/2 step) = 8,000 so I can't do .0001. I would need to set it at 20,000.  The A Axis DRO needs some more work on it. I'll see what I can figure out.

Thanks
Lee

155

General Mach Discussion / Jogging A axis at .0001 problem

« on: January 21, 2007, 02:15:54 AM »

Hi,
I am using version 2.00.037 and have noticed the following problem (also existed in previous version). If I set Jog Mode to Step and increment to .001 jogging works fine on X,Y,Z and A axis. If I set it to .0001 then X,Y and Z work fine but A does not. Sometimes it will move the motor and DRO 1 or 2 increments and then die and sometimes it just will not work at all. In General Config A-Axis is Angular is checked, Rot 360 rollover is not checked. Kernel speed is set for 25000. Does anyone have any suggestions on how to get the A Axis to work properly? It is feeding a stepper on a rotary table. Also, does anyone know the format code (for Screen 4) to get the A Axis DRO to display angle degrees instead of .*********X? I think that I just need to move the decimal over 2 places.

Thanks

156

General Mach Discussion / Re: Version 2.0.009 Mach3Turn Diag screen Enable 1 LED always on

« on: November 17, 2006, 03:30:22 PM »

Hi Brian,
Thanks for the info.

Lee

157

General Mach Discussion / Re: Version 2.0.009 Mach3Turn Diag screen Enable 1 LED always on

« on: November 15, 2006, 04:21:40 PM »

Hi,
No, I am not set up in metric. Here is what else I did, After, I could not not make the Ports and Pins trial work, I went in and manually edited the XML file to make sure Enable 1 was set to 0. That didn't make any difference so I erased the XML file and went into MachTurn 2.0 and set it up again. I needed to adjust the motor speed anyway. That did not make any difference. I suspect the problem is not in the XML file. Is there any place else I should check? I can live with it if necessary since everything else is working fine. It is hooked up and running.
Thanks
 Lee

158

General Mach Discussion / Re: Version 2.0.009 Mach3Turn Diag screen Enable 1 LED always on

« on: November 15, 2006, 03:51:05 PM »

Hi,
I did receive a message and I believe that was it. What does that do?
Thanks
Lee

159

General Mach Discussion / Version 2.0.009 Mach3Turn Diag screen Enable 1 LED always on

« on: November 15, 2006, 12:57:35 AM »

Hi,
I am using Vers 2.0.009 (downloaded a few days ago). In Mach3Turn the LED for Enable 1 is always on. I tried going to Ports & Pins menu choice and to the Output Signals tab and all have a red X and show 0 for ports and pins. I tried changing Enable 1 back and forth and it made no change. The red LED stays on. Does anyone, have any suggestions on how to turn it off?
Thanks
Lee D.

160

General Mach Discussion / Re: Help with Mach3 Lathe Toolpath display

« on: November 04, 2006, 08:02:37 PM »

Hi Dave,
Thanks for letting me know. Your situation sounds like what I have noticed. The key thing is that Mach 3 cuts the metal just fine. I am grateful for that. In my case, since I was not moving the X axis, Mach 3 could not figure out a minimum and maximum x. The next program that I ran ( facing the stock to the right length) displayed fine.
Thanks again
Lee