On going chinese 6040 problems

[amxen]

OK so iv been trying to set up my 6040 cnc and to be honest i can run it and i have cut some MDF with it, but im not 100% happy with it. The problem i have is if i set the motor tuning to the recommended setting the steppers jam. To prevent this i have to run them at less than half the recommended settings. Here is a video of whats happening maybe someone can help,

https://www.youtube.com/watch?v=O3I8...ature=youtu.be

hope some one can help

[Clive S]

It would help if you gave some details about power supply, voltage, motor specs if you have them and driver.
That would be a start so people can make an informed opinion. ..Clive

[EddyCurrent]

Also do you have Mach3 set to mm or inches ?

[amxen]

yer sorry this is what i have

http://www.ebay.co.uk/itm/CNC-ROUTER...item2c5eac77af

and this is what in the box and the steppers




i dont know if that helps.. i also have mach3 set to mm .

thanks for the help Mick

[EddyCurrent]

It looks like you have this setup;

3163B Stepper Driver
set to;

Dynamic Current = 2.5A
1/8 Microstep
50% Standstill Current

57HD5401-14S/8 Stepper Motor

1.8 step angle
6.6V
3A
2.2 Ohms
8mH
17kg/cm
4 wire

24v 8.3A DC PSU
1605 ball screws


And that being so, the settings you have seem to be okay as far as I can make out.
However I did a conversion of the motor torque setting and 17 kg/cm = 1.6671305 Nm, this is not so good but as your video shows they are not under load.

I think you could reduce the microstepping and see if that helps, remember to change the Mach3 'steps per' to match.

5m pitch
1.8 deg motor
1/8 microstep (8)

360/1.8 = 200
200/5 = 40
8 * 40 = 320 steps per

------------------------------

Reduce microstepping to 2 by setting K1 ON, K2 OFF

5m pitch
1.8 deg motor
1/2 microstep (2)

360/1.8 = 200
200/5 = 40
2 * 40 = 80 steps per

[amxen]

ok thanks ill try that. im rite in thinking at the moment they are both set to on. so all i need to do is switch k2 down on all three . Then change the steps per to 80 . I do have 3 of these i could try and see if its any better if that dose not work .

http://www.ebay.co.uk/itm/EU-Free-Sc...item338efc0758

[amxen]

Ok I'm lost now. Are you saying the board I'm using won't take 36v or the drivers that came with the kit won't take 36v

[Clive S]

Ok I'm lost now. Are you saying the board I'm using won't take 36v or the drivers that came with the kit won't take 36v

Ok for the sake of clarity I take it you have two setups one purchased with the cnc and the other which is a set of drives and motors and a power supply is this correct. .Clive

[amxen]

Ok I'm lost now. Are you saying the board I'm using won't take 36v or the drivers that came with the kit won't take 36v

[amxen]

Yes that's correct
I was going to make my own so I got all the parts together to make one. Then I found I don't have the time to prototype parts. So I thought I would buy one. . The photos and video are of the one I got form eBay. The link to the aliexpress is a kit of electrical parts I have that for the one I was going to ( May still do) make. But I can use the parts on the other if I need to. Not sure about the sub Bob now thow as I have a dedicated pc with a PP. Hope that's abit more clear. Thanks mick