X and Z axis making a loud binding noise--- NEW MACHINE

[sschwarzman]

IMG_1549_1.mp4 (2.39 MB)This morning I turned my new machine on and found that when I tried to “HOME” the device the X and Z axis will not move--- making a loud grinding noise. I was able to jog all axis yesterday during my very first test and everything worked fine---all axis.



Do you have any thoughts and help?


I've sent a note to support but was wondering if anyone on this forum has idea's--- Ive check all connections


AR8 PRO V5

[stevem]

The video isn't long enough to tell, but it sounds like something is slipping or binding.
I would check the X and Z coupler's to make sure everything is tight. They are easy to get at and you only need a allen wrench to tighten.

[sschwarzman]

Mar 14, 2020 9:20:48 GMT -5 stevem said:

The video isn't long enough to tell, but it sounds like something is slipping or binding.
I would check the X and Z coupler's to make sure everything is tight. They are easy to get at and you only need a allen wrench to tighten.

Thanks for the response---- I feel that the two axis are "binding" rather than slipping.  The motors are trying to move the screw but just make the noise.

The video is short due to size limits of the upload.  

Just curious, the room is cold---- has anyone had issues with temperature causing these sorts of issues?

Thanks
Stuart

[sschwarzman]

I've adjusted the X switch and it has helped somewhat but not not completely-- it still gives me the binding noise/action (x+610/y+1210). I was running the fly cut and have found that that I get the binding in the extreme X+/Y+ distances (x+610/+1210). My work around was to put the working speed at 1000--- this made for a very slow job but I got it done.

So I am hoping that support will get back with me and assist with this issue as I'm am at a loss and don't want to run at working speeds of "1000".

[stevem]

610 and 1210 are the end of your travel. Your machine is 24" or 610mm and 48" or 1210mm so that is your travel limit.
I have a AR4 and that is 24"x24", but I really can't cut anything that is 24x24.

[sschwarzman]

Mar 15, 2020 8:29:35 GMT -5 stevem said:

610 and 1210 are the end of your travel. Your machine is 24" or 610mm and 48" or 1210mm so that is your travel limit.
I have a AR4 and that is 24"x24", but I really can't cut anything that is 24x24.

Curious--- when you have fly cut your spoil board did/do you have issues when hitting those limits.  I can tell you I have an I2R machine and have never encountered any issues with "binding" noise.

I was only able to finish the spoil board cut/fly cut by changing the work speed to 1000--- and it was terrible slow.  

[sschwarzman]

An update on my issue.

After working with Axiom Support, whom I can't say enough positive things about, we where able to figure this out.

My issue was a loud binding noise when at the far reaches of the X travel. Support assessed the situation and figured it could be one of two things--- 1) lubrication, or 2) the ball nut bearing was out of alignment.

Bottom line is my lubrication was sufficient and I had to simply realign the Ball Nut Bearing.
Realigning the Bearing is simple:
1) jog the X axis all the way to the left, loosen the four screws holding the bearing in place by approx 1/2 a turn, jog the X axis a far to the right (+) while still leaving access to the four screws, and finally tightening the screws. After this procedure the "binding" noise went away and I've not seen any further issues.

I also upped all of the Fast speeds on X and Y to 3000/4000 respectively.

Hope this helps anyone that may have a similiar "noise" that has recently purchased one of the V5 CNC machines.

[Bob]

Thanks for the update, and tutorial. This information can be extremely valuable for any of us.

[rbr]

Also a newbie question for sschwarzman. Since two months, I have an AR4 and love this machine. Suddenly this evening, I had the grinding noise you described, in my case with the X-axes (near X10 Y300. Homing at S1000 and fast speed at S4000 are fine, but suddenly the grinding noise started at S3500 (without load). Lubrication is fine, so I expect the ball nut to be out of alignment.
In your description, you refer to loosening the four screws holding the bearing. By this, do you mean the four screws holding the stepper motor, or other screws?

[Axiom Tool Group]

I would point out that the ball screw alignment does not easily change.

Depending upon your machine model...a speed of 3500 (nearly 140ipm) can be very dependent upon lubrication.


Higher speed travel can easily create a situation where step loss is possible...as stepper motors have less torque at higher speeds, increasing the load on the motors.

The best recommendation is that both ball screw and prismatic guides are wiped down daily with a light machine oil (3in1 preffered).


*If lubrication is not done regularly, the surface friction can increase...and eventually deplete the bearing grease internal to the bearings as well.