01-08-2007, 09:50 AM
The support here is awesome thanks for all the great suggestions. Going to pick them of one by one. Suspect it will take a while to go through each one.
Did some tests this morning. Upgraded to the latest version of Mach 3 from the web site. First test caused the crashing to occur again. This time thought the low moaning/growling was not there (or atleast not as noticable).
When I loosen of the z axis mounting bolts the problem did not show itself after two passes. No moaning no stalling for that axis (y still stalled once).
I removed the z axis motor and verified again that the alignment of the axis. Appeared perfect to me. So installed the motor again left it loose from the mounting bolts, ran the pattern twice with no stalling/growling or moaning.
So maybe I have two issues, 1 - Software version, 2 - just what does it take to tighten down the motors to the axis. Thought I had worked hard at doing it slowly and aligning the nicely.
One thing I did notice, before I took of the Z axis motor I watched it wobble around when loosely mounted. When I remounted it and ran the pattern (loosely mounted) the motor wobbled ALOT more than before checking things out. Strange you would figure the alignment of the shafts would be the same. Something must be causing a bad alignment with the motor and shaft with the gas line connection.
Wanted to continue with testing but Work calls....
01-08-2007, 11:03 AM
thesaent14 , is that 3/4" EMT for your Z rails instead of the 1/2" in the plans?
This might seem kinda silly....but, does anyone know if wrapping your motor cables in tin-foil would provide shielding instead of buying sheilded cables?
01-08-2007, 11:14 AM
Just keep your cables a little separated from each other on the way back to the controller..all you need is about 1/2 inch to keep any troubles away..it is when they are bundled together along the way, that trouble will happen..also keep the power cord of the router as far away from everything as possible..even to the point of a different house circuit to power it,as static pulses could mess things up to..if you are using the same wall plug to power the controller and the router..avoid this..Michael
01-08-2007, 11:55 AM
Buzz9075...when you are hooking up the motor to the drive screw...are the motor and the screw actually touching each other like in the pictures?? Try to make a little separation..as close as you can without actually touching..that way there is no load on the bearings of the motor
01-08-2007, 12:01 PM
I believe that the screw and motor are touching. My plans tonight was to do do the following.
Visually align the motor and rod (using the camera to make sure I got it right) with a small gap between motor and rod. Using the bottom three mounting nuts&washers to create a solid mounting pad that when I replace the motor with the hose ensure that that it will be straight then remove the motor and put the hose in place and try again.
This in my mind will remove the problem as being an alignment problem as well allow for some give between motor and axis.
01-08-2007, 12:05 PM
C.Michael Im going to be using flexible couplings on mine instead of tubing, I ordered them today. Im wondering, if the problem does turn out to be the transfer of loads to the motors bearings, do the flexible couplings allow for this internally somehow, or might I end up having the same problem?
(Buzz Im ashamed to say Im secretly [Not anymore! ] hoping its your Xylotex kit since Im using HobbyCNC and then I wont have to worry about it! )
01-08-2007, 12:22 PM
thkoutsidethebox... please don't say that. I ordered the entire unit as one so that I would not have to deal with all the additional work of boxing it up when I got it (just wanted to add my limit switches.). I would figure that David would have the same problem with his machine if the hose did not work properly.
01-08-2007, 12:26 PM
01-08-2007, 12:47 PM
My Build Log...
I don't think I mentioned it, but my Solsylva build log is here:
http://www.cnczone.com/forums/showthread.php?t=29935 (My Solsylva router build...)
Not much to look at yet, but I can't wait to get it up and running!
01-08-2007, 02:37 PM
Buzz9075 Whenyou get the couplers,there will be a set screw to attach each end to the respective shaft..they are easy to install..but what you are trying to avoid is the cram factor..dont be installing the motor in a way that shoves the motor shaft into the motor..you could easily do that with the three 5/16 carriage bolts that mount the motor and not relize you are doing it..
when you get the couplers,you will need to take the motor off to install them..first install the coupler on the screw drive,tighten the set screw..now before you set the motor on,screw down the screw drive side mounting nuts toward the direction of the screw drive..now set your motor back on its bolts with the shaft installing into the coupler..dont tighten the motor set screw yet..now lift the motor out of the coupler with the 3 screwdrive side mounting nuts,ever so slightly..maybe an 1/8th inch...just enough to unload the weight of the motor off the shaft and on to the nuts...now you can tighten the motor side 3 nuts to lock the motor in place...after this then tighten the set screw to the motor shaft..be sure that the set screw is going up against the flat part of the shaft when you tighten it...Michael
01-08-2007, 02:44 PM
Wow! Lots of posts since I was here last.
thesaent14, Your machine is coming along nicely! I can't wait to see what you build with it. Whats your first project going to be? I'm gathering parts to build a new recirc skimmer next.
James_Marshall, Yeah its Cat-5 cable. I have a big spool of it here at the shop so It was free for me. Its a 8 conductor cable in twisted pairs. I am using two conductors per wire on each motor. I haven't had any problems yet. If I do, I'll buy some more flexible wire with a foil sheilding. Mouser Electronics has some 4 conductor cable with sheild for around a dollar a foot.
Fifty_ohm, Thanks for the compliments! Glad you like the BRB! I found it http://surpluscenter.com/item.asp?UI...tname=electric
Can't beat the price!
tecero, I bought the E-Chain on Ebay. I paid $22 including shipping for that piece with the ends!
lgroulx200, I am very pleased with the machine. Especially since my only cash outlay was under $200 for the aluminum, E-Chain, rollerblade bearings and the all thread. I had every thing else laying around the shop.
01-08-2007, 10:36 PM
When I opened the discussion I was not sure if this forum or the one on Xylotex was the best place to submit my problem so I entered it into both. Wow did I get a lot of good feed back from both forums (keep em coming). But to keep things easy to document and review and with tonights information and my gut feeling that it has something to do with the Xylotex system I am going to try and move the information over to this thread. Would really appreciate you help over here:
Thanks again for all your help.