Messages

21

General Mach Discussion / Stepper motors are acting weird! please help

« on: March 03, 2016, 09:53:47 PM »

I'm in the process of upgrading an old cnc lathe with all new electronics. Everything was fine when I first installed and wired everything up. I'm still in the process of wiring other small things but for whatever reason whenever I turn the power on my stepper motors decide to start moving on their own. They keep moving until I jog either motor then they hold. If I keep jogging the axis, it sometimes goes smooth in one direction but the other direction is very rough. Does this sound like a wiring issue or possibly a weird setting in mach3. My setup is just ebay nema 23 motors, c10 breakout board, gecko g251x and 24v power supply for the drivers. Also if I was to turn the power on the electronics without going into the mach3 software then the motors hold without moving at all.

22

General Mach Discussion / Re: Spindle servo drive not working with mach 3

« on: March 03, 2016, 09:44:57 PM »

I'm not sure how to delete a post but I went ahead a decided to go a different route with a different drive.

23

General Mach Discussion / Spindle servo drive not working with mach 3

« on: February 28, 2016, 10:14:04 PM »

Hi All,
       Currently doing a complete electronic conversion on a old cnc lathe. The lathe came with a SEM servo motor that was powering the spindle. I purchased a DG4s series driver that uses step/dir to operate my spindle. I went ahead and started wiring up the drive to the oem encoder and servo. I get power, no errors no smoke! Once in mach 3 I setup the correct port and pins, step/dir and within the spindle tab I have the disable spindle relays box checked, and use spindle motor output, step/dir motor also checked. I go into manual mode and simply type in a basic code like g97 s100 m03. The chuck begins to turn without any issues. It will even work fine with m04. My problem is that I can't turn the spindle off. I type in m05 and it says the spindle stops on mach 3 but my actual spindle is still moving. Only way I am able to get it to turn off is by shutting my entire machine down. btw the spindle servo drive is wired into a c10 bob.

Does this sound like a wiring error or am I missing something in the mach3 settings?

24

General Mach Discussion / Re: Newbie question about push buttons

« on: January 02, 2016, 11:02:32 PM »

PoKeys USB has a MACH3 plugin, so you can set up, an input matix that triggers doOEMbutton. It can give feedbach with LEDs, control LCD 4x20. MPG etc.
I made my self a rather decent operator panel with it.
https://www.youtube.com/watch?v=Z351UbtLujs
Now the USB version _can_ be setup as keyboad emulation, but in 99% of the cases it's not needed.

Very cool looking panel. Kind of embarrassed of mine now haha. That shuttle pro sounds fantastic but being that I've finally finished my panel I might at well go with the pokeys usb instead. Either way though thank you both on your knowledgeable input

25

General Mach Discussion / Newbie question about push buttons

« on: December 30, 2015, 10:51:52 PM »

I'm in the process of retrofitting an older cnc lathe called a dyna myte 3000. I've gutted the out of date electronics and am starting fresh. So far I have purchased a c10 bob, gecko 251x drivers and will be reusing the original power supply since it worked fine before. I went ahead and made my own control panel for this machine which includes a power switch, spindle switch, toggle switch for opt stop, a button for cycle start and one for feed hold. I also installed 4 separate buttons which will control the feedrate and spindle rate override up and down.

Wiring anything more than just stepper motors is all new to me. Do I need to make my own script in order to have mach3 communicate with the buttons I installed? or is it as easy as setting up a hotkey

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Show"N"Tell ( Your Machines) / Re: Converting a dyna myte dm3000 cnc lathe to mach

« on: December 26, 2015, 10:53:31 PM »

Sorry for the long delay, ended up moving my shop a mile up the road. I seem to have things figured out on my little lathe except for one thing. I'm still lost when it comes to this spindle. Here is the specs

SEM MT30 U4-48, Serial#H10062
 Max RPM 3000, Volts 140, Pulse Amps 57
 Cont Stall Torque 4.5 Nm, Insul F
 Tacho 7V per 1000 rpm
 Brake- Supply 110 vac F90-1059

I did however find a dead forum where someone has claimed to use a dg4s-16035 dc positioning servo drive. 160v 35a 80VDC max without braking circuit. He paired it with a brkc-180 braking circuit. This is the first time I've ever tried to cnc a spindle so any help will do.

If you need some more information on parts of my machine ill be happy to get it for you.

27

Show"N"Tell ( Your Machines) / Re: Converting a dyna myte dm3000 cnc lathe to mach

« on: October 15, 2015, 09:53:25 AM »

Thank you greatly rich for the quick response. I do apologize for not including the info. Tonight I will try and gather as much info about the machine and electronics as I can so it will help everyone out. Thanks again

28

Show"N"Tell ( Your Machines) / Re: Converting a dyna myte dm3000 cnc lathe to mach

« on: October 15, 2015, 07:37:41 AM »

Pics

29

Show"N"Tell ( Your Machines) / Re: Converting a dyna myte dm3000 cnc lathe to mach

« on: October 15, 2015, 07:36:26 AM »

Pic

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Show"N"Tell ( Your Machines) / Converting a dyna myte dm3000 cnc lathe to mach

« on: October 15, 2015, 07:24:04 AM »

Hi everyone! I've followed several sites about doing a similar conversion, and i am slowly building up the confidence to convert mine. I purchased mine about a month ago and was told everything worked. Upon studying its manual I slowly became familiar with how to somewhat set up this machine using its very outdated controller. To my disappointment there was several buttons on the controller that wouldn't work. I have tried a couple different attempts to fix it without any luck so I am now leaning more towards the conversion since I have yet to even play with this machine.
I would like to follow the footsteps of a couple of different guys on those sites as for the electronics they have picked out, however I do have several questions. I've built 3 small benchtop mill and lathes before but only using cheap Chinese steppers/drivers. So far everything is holding up but being as how I've spent a bit of money on this machine alone I'd like to give it decent quality electronics.

I apologize in advance if my questions seem too "newbie" but I just want to be sure I'm on the correct path.

I've copied this from another site from a guy I believe his name was MRM

He wrote what he has purchased:

1. Bardac 1600i
2. G540 Stepper Controller
3. 48V w/ 24V/5V Keling Power Supply
4. C10 bi-directional break-out-board
5. 20A EMI Filter

Here is some of my concerns

Bardac 1600i is what you would use to control the spindle correct? Will I also need some sort of index pulse card to know the spindles location? Also is the bardac literally $600+ or am I seeing things? Why can't we use the original or won't it communicate with mach 3?

The g540 controller seems very popular and nice quality. Will that control both the z and x or will I need to purchase 2 of these?

The power supply seems self explanatory

The c10 break out board. Will it be able to control things like the turret, coolant, limit switches ext... ?

What exactly is a 20a EMI filter?

I've read on some of those posts that someone has a script written for the turret movement in mach 3 so hopefully I can eventually retrieve that as well in the near future if I can get moving on this project.

I'll post some pictures in a couple minutes of its current condition. Thank you to whoever can help me out in this