Messages

11

General Mach Discussion / Re: JOG works right but cuts backwards or vice versa

« on: July 16, 2013, 07:12:57 PM »

3 axis gantry router.

12

General Mach Discussion / Re: JOG works right but cuts backwards or vice versa

« on: July 15, 2013, 08:54:30 PM »

xml attached

13

General Mach Discussion / Re: JOG works right but cuts backwards or vice versa

« on: July 14, 2013, 04:11:30 PM »

Likely your axis need changed direction by  changing the active state of the Dir output in Ports and Pins, Motor Setup and Also you Jog keys would seem to be backwards. Presume you are meaning keyboard jogging? If so then you can change the key assignment from Config menu then System HotKeys.

Hood

If I click the X axis so it has a checkmark under reverse then it jogs fine but cuts backwards. I don't care about the jog so much it's just that right now I wanted to use the soft limits and I can't with the X going the wrong way. If I TAB and click on the X+ I want it to go X+ not X-. If I fix the one thing then the other is wrong again. It's very odd.

Andrew

14

General Mach Discussion / Re: JOG works right but cuts backwards or vice versa

« on: July 14, 2013, 01:18:10 AM »

Thanks Hood I'll check it out when I am back home. I appreciate your input and help, Thanks!

Andrew

15

General Mach Discussion / JOG works right but cuts backwards or vice versa

« on: July 13, 2013, 12:38:54 PM »

I have set zero on the CNC to the front left corner of the table. If I have it set so it's jogs manually in the right directions the text on X axis is backwards. If I have the manual jog so it goes the wrong way it cuts the text fine. What the heck?? I tried wiring the motors differently but it's not that as when the jog controls work right it cuts wrong. If I jog it and it increases the X and it goes to the rear of the table it cuts text backwards. If I change it so it goes the wrong way, such as when I hit X+ and it goes to the front of the table, but it cuts right.

I read the home should be front left and Z as high as it will go.

What is wrong please??

Andrew

16

General Mach Discussion / Re: Kernel speed set to high on z axis and will not save calibration.

« on: July 09, 2013, 08:47:25 PM »

I checked it at both 65000 and 100000 as well and it reads between 5.2 and 4.5 or so each time. So now it's at 100000 and seems to work really well. I calibrated again and it does it right on, well as far as a ruler can tell but good for now until I do it better.
Thanks for your help!

Andrew

17

General Mach Discussion / Re: Kernel speed set to high on z axis and will not save calibration.

« on: July 09, 2013, 03:00:57 PM »

Ok further developments. I upped the kernel speed to 65000 and it seems to really like it and it seems to give consistent distances. Should I just go to the max kernel speed??

18

General Mach Discussion / Re: Kernel speed set to high on z axis and will not save calibration.

« on: July 09, 2013, 11:58:09 AM »

Ok so I used the Sherline mode and it got a lot better. But I still couldn't get consistent distances. SOunds like the steps are being missed. It is a cheap Ebay TB6560 board. But is there any other settings that could be doing it as well?? (I think a Gecko is looking better everyday..)

19

General Mach Discussion / Re: Kernel speed set to high on z axis and will not save calibration.

« on: July 09, 2013, 11:07:30 AM »

Ok so I was trying to calibrate again. I tell it to move 30 "units" which should be mm as I set that up in the config. So it moved about 26 not bad but not close enough. So it asked and I put in 26 and it calculated a new steps and I accepted it. Then I closed down and re started Mach3. Checked that it was in there and it was. Did a calibration, for 30 again. It moved less than it did before. Then it wants to set it higher  and higher each time as it moves less.
What am I missing?? It moves but not enough. I even set it really low to 600 steps and it still didn't work or go far enough. WTF??

Please anyone with ideas?? If you need more info simply ask as I am not sure what you might need.

Thanks.

Andrew

20

General Mach Discussion / Re: Kernel speed set to high on z axis and will not save calibration.

« on: July 09, 2013, 10:20:37 AM »

I meant to ask as well, what do you do if you calculate the steps per unit and it doesn't work? Then what? Or is that not normally a problem?? I have a 13 TPI threaded rod, a regular 1.8 deg stepper. So at 16 microstepping 3200 steps per revolution. I set my units to MM when I setup Mach3. So 13 tpi is 13 turns for 25.4 MM or 1.95 MM per turn. so.....3200 / 1.95= 1637.79 or 1637. Is that right?? My kernel speed is 25000.