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1013
Feb 29, 2016 21:25:16 GMT -8
Post by Mark B on Feb 29, 2016 21:25:16 GMT -8
I seem to have an aliment problem where the three section of Y axis table meet, every run I make I get two lines running across my work piece resulting in me having to try sanding them smooth. I have tried moving the table slowly by hand & found resistance when the drive cog meets each joint..... Do you have any suggestions?
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1013
Mar 1, 2016 15:21:46 GMT -8
Post by Deleted on Mar 1, 2016 15:21:46 GMT -8
Is the table flat across the top where the sections come together? I'd try loosening the nuts that run along the side of the table that holds it along the y axis, then tightening it back down. Sounds like there might be some alignment problem with the sections coming together and it might be because the table is constrained somehow. I'd start by getting things a little looser. If you're feeling ambitious, when you loosen the table take it fully off the machine and lay it upside down on a flat surface, then check each joint where the sections come together to see if there is any "bump".
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1013
Mar 5, 2016 5:29:52 GMT -8
Post by Deleted on Mar 5, 2016 5:29:52 GMT -8
I seem to have an aliment problem where the three section of Y axis table meet, every run I make I get two lines running across my work piece resulting in me having to try sanding them smooth. I have tried moving the table slowly by hand & found resistance when the drive cog meets each joint..... Do you have any suggestions? If you are having a problem with resistance at each table joint, it is quite possible that the gear rack that runs down the center of the table underside could be cracked at each table joint. It seems logical if your table is indeed uneven then that could stress the gear rack enough crack it at the joints. NOTE: If I were removing the table I would not want have the table joints loose for the same reason.
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1013
Mar 9, 2016 21:42:15 GMT -8
Post by Mark B on Mar 9, 2016 21:42:15 GMT -8
Hi Bob,
Sorted the problem by stripping down the table & realigning the gear rack. Running smooth & true now, & carving like a little beauty! Thank you for your responds.
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1013
Mar 16, 2016 18:30:28 GMT -8
Post by dennis on Mar 16, 2016 18:30:28 GMT -8
I'm having an issue with my 13. Last night while starting a cut on the X axis I received a limit switch error on the return cut but the machine was a good inch or two from the actual switch? Any thoughts on what this can be? It's not the code because if I just put the machine in manual I can move it all the way to the right and when I bring it back to the left it will give me the red light at on point but it will continue to move.
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1013
Mar 17, 2016 5:50:48 GMT -8
Post by Deleted on Mar 17, 2016 5:50:48 GMT -8
You might check the limit switch for accumulated dust, it may not be returning to it's proper position if it is dirty causing errors.
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1013
Mar 17, 2016 14:17:14 GMT -8
Post by dennis on Mar 17, 2016 14:17:14 GMT -8
You might check the limit switch for accumulated dust, it may not be returning to it's proper position if it is dirty causing errors. That was the first thing I checked, I cleaned the machine and checked all the wiring to make sure everything was plugged in. I'm lost on this one, it gets 2" from the limit switch and stops. If I manually move it back and forth it gets to that same spot and the light goes red but once I'm past that specific spot it goes green until I actually activate the limit sw.
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1013
Mar 17, 2016 15:49:57 GMT -8
via mobile
Post by dennis on Mar 17, 2016 15:49:57 GMT -8
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1013
Mar 18, 2016 4:36:57 GMT -8
Post by Deleted on Mar 18, 2016 4:36:57 GMT -8
Dennis, the only thing I can think of, is that there is some kind of resistance happening as the spindle moves along the rails. The way I have checked this on my machine is somewhat complicated but it did identify where is was occuring and is as follows:
Looking at the X axis set up there is the coupler that connects the stepper motor to the X axis screw shaft, on the other end is a bearing and the bearing mount, and on the back of the motor where it is connected to the screw shaft there is plastic coupler that the screw goes thru ( though not identified in any schematic, I believe this part to be a coupler AND an anti backlash assembly )
You can remove the X axis screw shaft and check if there is binding occurring on the guide rails, ONLY if you are comfortable in doing so and follow this procedure:
(1) Clean any oil or lube from the shaft where it comes out of the coupler on the stepper motor then make a mark on the shaft with a sharpie where it comes out of the coupler so that it can be put back in the same position.
(2) Loosen the coupler only on the end where the X axis screw is held.
(3) Go to the other end of the X axis screw and remove the 4 bolts that hold the bearing housing.
(4) Using an allen wrench turn the X axis screw in order to back it out of the stepper motor coupler and then the plastic coupler which is on the back of the spindle motor This should remove the screw from the machine... You need to be careful with the screw and bearing assembly, if you drop it, it could get bent and that is a 200-300 dollar part.
Now that the screw is out you should be able to slide the spindle motor back and forth to check where there is resistance. If it is occurring where your machine is red lighting, then you will need to adjust the rails the spindle rides on to eliminate any binding along the total travel path. It is possible that the rail has moved slightly on the end where you are encountering the problem.
Re-assembly:
(1) Hold the lead screw assembly and start to feed it into the coupler using an allen wrench to turn it so that it begins to go into the coupler on the back of the spindle motor..... the tricky part here is that the screw will only want to go in part way and you will get resistance DO Not force it. As you are turning the screw reach around to the left side of the plastic coupler and push in on the side as it is spring loaded and then the screw should go all the way thru it.
(2) Once you are thru the coupler continue to turn the screw with the allen wrench to get it close to the stepper motor coupler, then just keep adjusting until the bearing assembly is lined up to replace the 4 bolts and lastly tighten the stepper motor coupler.
This will likely fix the problem, as I had a similar problem before, mine was binding and stopping on the other side about 2/3 of the way. I considered the possibility that the plastic linear bearings that ride the X axis rails were worn out, but that would cause binding all along the X axis, not just in one area. When I was sliding the spindle motor freely along the rails I encountered very stiff resistance where my error and stopping of the machine was happening.
Just remember the tricky part about the plastic coupler on the back of the spindle motor, the spring loaded side is part of the anti backlash and it you force it you could break the mechanism.
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1013
Mar 18, 2016 12:50:09 GMT -8
Post by mroliver on Mar 18, 2016 12:50:09 GMT -8
HI THERE DENNIS GIVE ME A CALL AT 253-467-0334 SO I CAN HELP YOU ASK FOR NICK
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1013
Mar 19, 2016 8:21:00 GMT -8
via mobile
Post by dennis on Mar 19, 2016 8:21:00 GMT -8
Nick, when I call that number you posted it says "call can not be completed".
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1013
Mar 20, 2016 6:18:46 GMT -8
Post by Deleted on Mar 20, 2016 6:18:46 GMT -8
Dennis,
You might get a better phone number quicker by contacting him via email, not sure how often he visits the bulletin board. Nick Sipes nicks@olivermachinery.net
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1013
Jun 12, 2016 14:51:32 GMT -8
Post by Mark B on Jun 12, 2016 14:51:32 GMT -8
Hi, got another problem cropped up. Noticed a electrical burning smell whilst carving the other day, thought it might be dust getting into electrical so blew around joints with airbrush with hope to clear anything. Then whilst carving today project got half way through & lost power, took plastic cover off to investigate & found the power supply connectors rubber covers to the on/off power switch were blacken & charred. So trying to figure out whether I need a new switch (hoping someone could enlighten me as to where I might get one) or a new power cord (which I can get at Lowes from what I seen) But I'm not planning on switching the machine back on till I repair it as I don't want to risk a fire.
Cheers
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1013
Jun 13, 2016 3:27:31 GMT -8
Post by Deleted on Jun 13, 2016 3:27:31 GMT -8
Hi, got another problem cropped up. Noticed a electrical burning smell whilst carving the other day, thought it might be dust getting into electrical so blew around joints with airbrush with hope to clear anything. Then whilst carving today project got half way through & lost power, took plastic cover off to investigate & found the power supply connectors rubber covers to the on/off power switch were blacken & charred. So trying to figure out whether I need a new switch (hoping someone could enlighten me as to where I might get one) or a new power cord (which I can get at Lowes from what I seen) But I'm not planning on switching the machine back on till I repair it as I don't want to risk a fire. Cheers I do not really think simply replacing the cord or switch is the solution to the problem although it is possible you could have a bad power switch. It would be more likely that you either have a electrical short somewhere in the machine or a power spike from your electric outlet. Dust accumulation inside where the board is could possibly cause a short due to humidity making the dust wet enough to become a conductor. As for power problems at the outlet I would get it checked out, or use a volt meter to see what the voltage is coming thru your power source. Sometimes an outlet can go bad and cause problems as well. Builders are notorious for using the cheapest outlets and switches that still pass code (like 99 centers) I have replaced virtually everyone in my house with a better grade, some of the cheapies literally crumbled when I took them out for replacement. Many years ago I came home from work at midnight very tired and thought, I must really be beat because the lights in my house seemed extremely bright. Awoke in the morning to a dead coffee maker, microwave and toaster. Had the electric company out and the lineman said the transformer on the pole outside was bad, he measured 163 volts coming into the house lines. The appliances had burned out when they were not even on, just being plugged in, same thing for any of my neighbors getting power from that transformer.
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1013
Jun 13, 2016 6:51:56 GMT -8
Post by Mark B on Jun 13, 2016 6:51:56 GMT -8
Hi Bob,
Thanks for your reply, I did check the outlet (first thing I thought of, as I had gone through & updated all the outlets a while back) &all seemed fine. I also have used my airbrush to blow any dust accumulation out of the electrics in the back panel, but with the mains wire connectors being so blackened & charred I'm looking to change out the power cord for safety & would like to change out the power switch but need to find a replacement.
This couldn't be at a more inconvenient time as I have orders to fill for people, at the same time packing up the house to move back to England & trying to get the last orders filled before packing our machine up to take to England with us. Plans are to continue using this unit, purchase a larger unit & pass this one onto our son to work with. But need to get it working safe & sound again....
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