Moving the spindle up or down with the Z+/Z- button sometimes results in the spindle stopping with a grinding/squealing sound. Also can fail after bit touches puck and moves up for clearance. Sometimes it will fail after a job completes and the spindle raises to a stop position. It seems to work if I move (Z+/Z-) in small increments of 1" or so. After making this sound and stopping the remaining travel distances are lost.
I powered the machine (AR6Pro) off and manually turned the Z axis lead screw fully down and up. There is no binding in either direction. This seems to happen more often in the mornings but not always. Overnight shop temps. are in the mid to upper 50s (~55F this AM). The X and Y positions are not affected and don't have this problem. I can move the spindle to the bottom of its travel range, then use the ZRN/Home Z Axis to bring the spindle to the top of its range and the problem does not occur. I wiped the Z screw, lubed and ran it through its full range.
It seems that the up/down speed (Z+/Z-) is too fast for the motor and it stalls. Don't know if it's stalling or sensing an overload.
Is there a parameter that I change to slow down the up/down speed when I use the Z+/Z- buttons. Thought I would post here before contacting Axiom.
I'm having similar issues. I tried speeding up the Fast Speed and that seemed to be what caused it - I am now back to 2500 and may go lower to 2000. I found this under Menu, Auto Pro Setup, Work Speed. Try selecting your Fast Speed from this menu option, delete the existing value (also note what it is) and replace it with a lower value. Another possible source of issue for me is that I tried to use the Home Position in Vcarve (material setup) to tell the spindle to move out of the way when done with a job. For some reason, it can't handle that. I'm going to try and go back to a 0,0 home position and I'll try changing the stop state instead. BTW, look into your safe height and stop state while your in Auto Pro Setup.
Zucaticorp - I had your problem. The wire had broken free from the aluminum puck inside of the shielding. Use a multi-meter and check the resistance from the end of the plug to the face of the puck. If you get an "OL" or no numerical reading, then there is no longer a connection between the plug and the puck. I disassembled it, clipped off the frayed connection and re-assembled it with a new connector (at the puck). However, I now use the manual method and a piece of paper - this will never stop working ;-)
ncsak, something else you might look into - you mentioned it happens when you are moving the spindle with Z+/-. From the home screen, if you hit the stop/cancel button, you should see a list of speeds. I think these are specific to manual jogging of the gantry/spindle. Mine are set to x/y 2500 and Z is 2000. You can change those by selecting the one you want to change, deleting the value there and inputing a new value.
Something else that helped me, I changed my Stop State from the default to Back Home. This means when the machine is done running the file, instead of simply stopping and raising, it raises and homes everything. It's kinda nice because it gets out of the way of the work and for me seemed to completely solve the issue.
What do you mean by "ZRN"? I am unfamiliar with this feature.
Post by cehirschey on Dec 26, 2017 14:06:36 GMT -5
Did you ever get the answer? I have a similar problem from time to time on my X axis. Get a grinding sound then stops moving, but the computer thinks it has traveled the correct distance. From that point forward, the X axis is off and of course the project is destroyed.
I have moved to slower feed rates and it fails less, but still happens from time to time. Not to mention the fact that simply running slower than the machine is built for is not really a good answer.
In my case, this can even happen when just moving the X axis freely across the gantry and not engaging the cutterhead or anything? This happens frequently (moving the x axis freely) to the far right side of the axis if running at the high movement speed. If I change it to low speed, it happens less frequently when moving freely, but still happens on occasion.
Last Edit: Dec 26, 2017 15:37:25 GMT -5 by cehirschey
Lowering the speeds made it better; it also made the machine much slower but it seems to have fixed the problem. When I get time to play with it I will start going back up on the speed.
I made one other change mentioned in another post about speeds being different than those shown in the bit parameters in VCarve. I changed that option through the hand held controller. That really slowed things down but the machine now follows the feed rate, etc. in the VCarve tool file. I can edit these depending on material type.
Right off I don't remember all the changes. The paperwork is out in the shop. I will get it tomorrow and do a follow-up post.
One other, and major problem, was that suddenly the depth of the X axis would increase, cutting thru the work. Changing the speed helped that. It didn't seem to happen on up-spiral bits but almost always on down-spiral bits. The fast movement was actually pulling the bit lower in the chuck. I have started tightening the chuck much tighter and have not had any reoccurrences.
Regarding the bit slipping down, I learned this the hard way. Are you snapping the collet into the spindle nut? I for many years did not have a problem with bits slipping and last week it happened on 3 consecutive toolpaths with different bits and even with a different collet. Chad at Axiom asked be if I was snapping the collet into the nut and I said What. Anyways, sure enough the collet snapped right into the nut and I haven't had a issue since.
cehirschey - what is the work speed and fast speed set at? Also, from the home screen, when you click stop/cancel, what speeds does it display? It's odd that it is happening on the x axis and at low speed - unless your low speed is set really high. Do you have dust collection - keeping the ballscrew and guides clean? And... how often are you lubricating those?
I set the Fast Speed from 3000 to 2000 (Menu, Auto Pro Setup, Work Speed, Fast Speed). Moves spindle more slowly but does not fail.
Changing the controller to read (instead of ignore) the g-code settings allows bit movement speeds to come from the g-code. This was addressed in another post: Auto Pro Setup, GCODE Setup, F Read - Change from IGN F to READ F.
It would be nice if the manual went into more detail on any of the options that can be changed, especially anything dealing with movement settings. I've still got a ways to go to get a balance of movement speeds and bit performance but it's getting better.
ncsak, the manual I received with my machine is pretty bad. However, I found an updated manual online that has more than double the content. Major difference is that it has a different controller than the one on my machine, but it seems that all the functionality is there. Check it out: www.axiomprecision.com/media/axiom-manual-basic.pdf
The manual you reference is for the A11 controller. My machine has the B18 controller. The manual I have is the same date as yours but is for the B18 controller. Looks like the contents are the same except for the stuff related to the B18 HHC.
I got my copy off the Axiom page that allows you to build and order a machine. The manual is shown at the bottom of the features. (Auto Route PRO+ B18 Manual)
Had the same problem as ncsak. Adjusted the work speed from 3000 to 2000. That seems to have fixed it. Now after I do the tool set and run a program the bit stays above the work piece. I have 1/4" material and set to cut through at .280 The program runs but the bit starts about .8 above the material and ends .52 above material. Its like the puck is twice as thick. Is there a setting for the puck size?
On your hand-held controller, if you go to Menu - Machine Setup - CAD Thickness .... this is where you can change the setting for the thickness of the touch-off puck. It says the default is 25mm. Not sure why your setting would be different.