Retrofitting a TOS FNG 32 NC

RotarySMP wrote:

Nice machine.

Could that motor run the central lube system pump?


 

 
Thank you, this is my first milling machine.

I suspect that to. I also have two more motors i'm not sure about, the first one is mounted on the bottom base of the machine. I think this one could be the build-in pump for flood cooling. The previous owner used an external cooling pump that stood beside the machine and I will use the same pump. 
Then there is a third motor that I don't have located yet. I can hear it starting when engage the contactor but i'm not sure where its coming from. This would be easier tomorrow when I'm not alone in the workshop 
 
 

Ok, turns out that I had misunderstood how the gears work. They are not hydraulic at all, instead they are controlled by an electromagnetic tooth clutch, one for each gear so it makes it easy to control. I just give them 24V and they engage. 
The hydraulics is used to automaticly release the tool but that function has been removed. It is also used to counter balance the table.

I tested all the limit switches and estop today, feels much better to have that. The main power to the spindel and drives is also controlled by estop now. 

   
 

I tried to run XYZ today but I have some problems.
When I press F2 in Axis, the machine immediately start to move down and to the right. Only about 10mm until I get joint following error.
I have checked the wiring 3 times. One time I unplugged X & Z and the same thing happend to Y after a couple of seconds. It makes a "jump" and I get joint error.

Are you sure the feedback is in the correct direction?

A quick runaway and a following error is expected if the feedback is reversed

(the way to fix this is to change the sign of OUTPUT_SCALE in the ini file)

I have changed the polarity of on of the pairs coming from my encodes, I had it backwards before.
I also changed inside the .ini file on one axis. So I believe every direction are correct now.

I only have 1 axis plugged in when testing and when I hit F2 the axis start to vibrate heavy. It's going 3mm forward, then 3mm backward very fast.
I get joint following erreor after 1 sec.
Same on all axis.

Ooen the "calibration" from the "machine" menu, set the P gain lower, click on test, then OK, then save to file after finding the right value.
forum.linuxcnc.org/10-advanced-configura...ning-detailed-how-to

Thanks. I changed from 50 to 5. Now I can jog the machine.
Moving on to tuning the axis

You are on the right track.

With your settings of output scale, min ans max output of 10....you will find that ff1 needs to be in the 0.1 - 0.2 range.

Set ff1 to 0, the increase P untill you get oscilation, decrwase p the by about 20%.

You should now see a following error symmetric around zero when jogging both ways.

The set ff1 to 0.1 and observe the following error. Change ff1 to 0.15 and check again. When you get close, reduce the increment of change to ff1. I normally tune ff1 to at least 3 significant digits.

I have been tuning all axis now, they move really smooth and its a nice feeling to see that the machine is finally moving again.

I've been trying to get the spindle running. I see that there is some values you can change inside LinuxCNC calibration, similar to the XYZ. Don't know how to set those up correctly. I dont get the spindle to run at all. Is there something more then to press F9/F10 in Axis?

I have wired from pin 7 -> Enable on Mesa -> 63,64 & 80. My +-10V is beteween 56 & 14.

 

After F9/F10, F11 and F12 will raise or lower the speed.