Messages

21

General Mach Discussion / Re: Threading problem, strange motion, Please help!

« on: June 09, 2018, 05:57:55 PM »

I tried a different pin, 13.  No change.
I removed the C3 and optical sensor from the system, and installed a Hall effect sensor and magnet. I tried many different Debounce settings.  No joy.
I tried ECP mode on the PP.  No change. Set it back to EPP.
The RPM reading was a bit more stable using the Hall effect sensor.
When I run the program while the diagnostics page is up, I can see the wait for trigger flash with each weird motion.
I also tried version 066.  It was the same.

22

General Mach Discussion / Re: Threading problem, strange motion, Please help!

« on: June 09, 2018, 04:38:53 PM »

Hi ministeam,
I use a C3 board and optical sensor from CNC4PC. With that I use a disc about the same size as a DVD, with a 1-1/2" slot.
I'll try another pin and see if that changes anything.

Mike

23

General Mach Discussion / Threading problem, strange motion, Please help!

« on: June 09, 2018, 01:32:50 PM »

Hello,
I have built a lathe and I'm having trouble with threading.
My system is very basic. XP Mach3 .062, CNC4PC C10 BOB, C3 Index board and optical sensor, C6 spindle Control board. My disc has a slot that is 1-1/2" wide.  I have tried different widths from 1/2" up to 1-1/2" with no real improvement. I use NEMA 34 stepper motors with Leadshine Drives.
The RPM is steady to +/- 1 rpm. I have a 3/4 Hp motor driven by a VFD.
The Index signal is working as far as I can see with the diagnostics LEDs. I've tried active Hi and Low.  It's on Pin 15.
I have slowed down the motion to 50 IPM with 12 acceleration. I'm not loosing steps. I usually thread at 400 RPM or there about.
I use the simple thread wizard for the code. I have been trying to make a 3/8-16 thread.
I have tried Index Debounce settings from 0-1000.
When I select Use Spindle Feedback in Sync Mode, it makes random motions prior to each pass. Strange ZigZag motions. I'll try to attach a screenshot.
When I do not select Use Spindle Feedback in Sync Mode, the strange ZigZag motions go away, but it makes a bad thread because it's not starting from the same startpoint.
What I don't understand it why is Mach sending the ZigZag commands.

Thank you for your help!
Mike

24

General Mach Discussion / C3 index board not seeing slot when rpm is fast

« on: February 07, 2016, 07:41:04 PM »

Thanks for your help guys.  I enlarged the slot to about one inch, and it seems to be working. I cut my first cnc thread!! 


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25

General Mach Discussion / C3 index board not seeing slot when rpm is fast

« on: February 07, 2016, 10:42:11 AM »

Hello, I have a C3 index board with the optical sensor, a CD painted black with a single 5/16 or 8mm slot.  When I position the slot in the sensor the index led lights.  When I rotate the spindle very slowly, the index led lights.  If I rotate the spindle quickly, the led does not light up.  When using Mach, it shows an rpm that seems accurate, and stable.  But when trying to cut a thread, it doesn't work at all.  When the spindle is rotating around 200 rpm, the led won't light for many seconds, and then it will flash 2-3 times, then it's dark for a long time.

Any ideas what I should check?

Thanks,
Mike


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26

Show"N"Tell ( Your Machines) / Re: 9x20 Chinese Lathe Conversion

« on: March 08, 2012, 12:54:13 PM »

Excellent write up.  I'm looking forward to watching your progress.  I have a 11x24 Rockwell that I want to convert.  You're making me really want to start now.
Mike

27

General Mach Discussion / Possible Mill for retrofit in Wichita KS

« on: January 03, 2012, 08:47:54 PM »

Don't know if this is the right forum for this.  I'm sorry if it's not.
I am in no way connected with this machine, just found it on a Gov't surplus auction site.
http://www.govliquidation.com/auction/view?id=4975994&convertTo=USD

The controls look destroyed, but the iron may still be good. Opening bid is $150.

If you get it, let us know how it goes.

Mike

28

Newfangled Solutions Mach3 Wizards / Re: NEW!! Drill Wizard

« on: December 11, 2011, 09:32:33 PM »

Ron,
Thanks!  I tried it out and you fixed the negative number issue, but I found another problem.  It doesn't seem to read the feed rate DRO.  I tried several different values, and the result is the same.  I discovered this by driving a #7 drill 80 ipm into an aluminum part.  The stepper motor lost that battle.  If I set the feed rate in the MDI and then launch your wizard it work at whatever feed rate I set in the MDI.
I also tried saving the program into a G code file, and I couldn't find any feed rate reference.

Thanks for all your work on this!  I really do like the wizard.
Mike

29

Newfangled Solutions Mach3 Wizards / Re: NEW!! Drill Wizard

« on: December 05, 2011, 09:17:16 PM »

Ron, I can't get any of the DRO's to accept a negative number. For example, when I install the wizard, the default depth is -.500.  I ran that, and it works, but if I enter any other number into the depth or incremental movement DRO's, it only take the number not the negative sign, and therefore will not drill below Z 0.

Thanks!
Mike

30

Newfangled Solutions Mach3 Wizards / Re: NFS rectangular hole patern problem

« on: February 06, 2011, 07:38:47 PM »

Ah, Thanks!!! I misunderstood the graphic. Now it makes sense.