http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy Free, open-source plans for a low-cost 3-axis CNC mill by Taylor Hokanson and Chris Reilly. Sponsored by the School of the Art Institute of Chicago. en-US Mon, 21 May 2012 16:02:10 +0000 http://bbpress.org/?v=1.0.2 q http://diylilcnc.org/forum/search.php http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy/page/2#post-339 Thu, 25 Feb 2010 15:44:18 +0000 Chris 339@http://diylilcnc.org/forum/ <p>@DIYengineer, that's great news! Keep us posted as you make more progress.</p> <p>BTW, I cleaned up those code dumps from the img/youtube embeds, hope you don't mind. I'll try to set up the forum so we can accept video embeds at some point. </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy/page/2#post-338 Thu, 25 Feb 2010 09:29:20 +0000 DIYengineer 338@http://diylilcnc.org/forum/ <p>I guess the youtube embed code does not work in the forums. opps! check the link instead. </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-337 Thu, 25 Feb 2010 09:27:49 +0000 DIYengineer 337@http://diylilcnc.org/forum/ <p>Link:<br /> <a href="http://www.youtube.com/watch?v=-w5pCUCzs3U" rel="nofollow">http://www.youtube.com/watch?v=-w5pCUCzs3U</a></p> <p>RE-soldered all joints. Now all 4 axis's work like butter. </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-336 Thu, 25 Feb 2010 06:40:26 +0000 DIYengineer 336@http://diylilcnc.org/forum/ <p>Ok sorry for the post before the picture, i wasn't quite sure which format would work.<br /> I re-soldered the Z axis section. Now it works fine only at full speed, but is jittery on the initial startup and slowdown which is still a big problem. Most likely going to have to re-flow the Z axis AGAIN, i cant believe its giving me this much trouble.</p> <p>As for the picture above, those are basically the main settings i need. I guess the steps per inch should all rely on the ACME rod i purchased correct? Currently Using half steps as well (J1 Jumper installed, and disabled voltage reduction J4 on all axis) </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-335 Thu, 25 Feb 2010 06:33:20 +0000 DIYengineer 335@http://diylilcnc.org/forum/ <p><a title='ImageShack - Image And Video Hosting' href='http://img38.imageshack.us/i/axismovement.jpg/'><img src='http://img38.imageshack.us/img38/1565/axismovement.jpg' /></a></p> <p>Test 2 </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-334 Thu, 25 Feb 2010 06:32:49 +0000 DIYengineer 334@http://diylilcnc.org/forum/ <p>[URL=http://img38.imageshack.us/i/axismovement.jpg/][IMG]http://img38.imageshack.us/img38/1565/axismovement.jpg[/IMG][/URL]</p> <p>Test </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-333 Thu, 25 Feb 2010 03:14:53 +0000 DIYengineer 333@http://diylilcnc.org/forum/ <p>going to re-flow the Z channel solder and see if the problem goes away like X channel did. Swapping steppers, and re attaching wires didn't do anything. Its most likely a weak solder point.</p> <p>Hopefully will have this figured out tonight so i can put up a new video of all 4 of them moving simultaneously while doing a gcode test run in mach 3. =P </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-332 Thu, 25 Feb 2010 01:43:10 +0000 DIYengineer 332@http://diylilcnc.org/forum/ <p>I'm thinking the wires entering the clamping post are to blame... I will re-clamp and see what happens. </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-331 Thu, 25 Feb 2010 01:42:00 +0000 DIYengineer 331@http://diylilcnc.org/forum/ <p>The settings are the same for all 4 axis's, but can be adjusted individually. This is a 1.8 degree motor correct? So 200 Steps per 1 full revolution. The motors are not connected to the gantry or drive system yet so i have no clue what that number should be. 200x_____=steps per inch. Velocity and acceleration also no clue, is there a spec sheet for these steppers? </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-330 Thu, 25 Feb 2010 01:08:47 +0000 Taylor 330@http://diylilcnc.org/forum/ <p>I'm sure you know this already, but I'd approach things one by one. First, drop some setting like steps/inch to 25% and see what effect it has. Bump it gradually back towards the default and note any changes. Is the problem identical? Or does the problem get better or worse? You can play with the jog speed in the same way.</p> <p>Numbers will differ depending on your setup, so we don't have a magic setting to give you. Your motor motion looks just like problems we had along the way - I'd be surprised if a faulty motor is to blame.</p> <p>Are the settings applied identically to all three axes? Or can you change each axis individually? </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-329 Thu, 25 Feb 2010 01:03:28 +0000 DIYengineer 329@http://diylilcnc.org/forum/ <p>I reassembled the board and driver box, including the forth axis. The X axis problem vanished. A,X,Y axis are as SUPER SMOOTH. Z axis now has the case of the jitters, just not as bad as the original! I'm starting too think its just the little clamping mechanism doesn't like 2 wires going into one port. Its a 8 wire stepper====&gt;6 wire port. The communication wires are just twisted together in pairs and shoved in. When the machine is fully assembled as per the directions you solder the wire that was given to you with the kit and only 1 wire enters the clamping post.</p> <p>also Inserted jumper J4 to override the voltage reduction in each axis, as well as running 1/2 step (Jumper J1 in each axis). Heat sinks get HOT HOT HOT without the current reduction on, but i wanted to take that out of the equation. </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-328 Wed, 24 Feb 2010 23:38:25 +0000 DIYengineer 328@http://diylilcnc.org/forum/ <p>Well the main settings are:</p> <p>Steps per INCH: 2000 (default)</p> <p>Velocity inches: 120</p> <p>Acceleration: 4inches</p> <p>G's: .010360</p> <p>Step pulse:0</p> <p>Dir Pulse:0</p> <p>Those are basically the current settings by default, see anything that i should change? </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-327 Wed, 24 Feb 2010 23:34:33 +0000 DIYengineer 327@http://diylilcnc.org/forum/ <p>REflowed all the solder joints on the board, 99% of them were already perfect although i did find a few here and there that took a bit more solder. Going to set the VREF on the 4th axis and setup 4th stepper just to make sure all is well with that axis since i'm checking the entire board, and mach 3 easily allows you to jog a 4th axis why not? haha.. </p> <p>On a better not I Picked up a Gateway 500SE tower from a friend (FREE) :), Made in 2002 1.8ghz Pentium 4, 512mb ddr ram, 64mb on board Intel video, 40gig ide HD, on board lan, and on board parallel. Runs windows XP pro 32 bit like a charm and passed the Mach 3 parallel port checker with very low latency! SO I have that tethered to my hobby CNC controller box. I think i'm going to gut my controller box and mount everything in the Gateway tower to save space and so all my wires are basically going to the same place.</p> <p>Time to hook the board back up and see if the stepper issue went away (*Crosses fingers*). </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-326 Wed, 24 Feb 2010 23:29:39 +0000 Taylor 326@http://diylilcnc.org/forum/ <p>My money is on the software settings. Been a while since I worked with Mach3, so these are all guesses. Look at scaling, look at jog speed and acceleration. Pull everything back to see if you can't find a ballpark where things smooth out. Also, does the spindle on the wonky axis turn back and forth, like it can't decide which direction it wants to go? Can you easily cause it to stop moving all together by gripping it with your fingers? These tests should help narrow things down.</p> <p>Also, try changing jumper settings on the axis in question. Does the motor behave differently? If so, how? </p> http://diylilcnc.org/forum/topic/x-axis-stepper-loud-rough-and-noisy#post-325 Wed, 24 Feb 2010 22:29:46 +0000 DIYengineer 325@http://diylilcnc.org/forum/ <p>I swapped 2 other steppers in and they all did the same thing which takes the steppers out of the equation. I was using 1/4 stepping (Jumpers J2 and J3 installed on X,Y,Z axis). J4 Un-installed on all (X,Y,Z). Triple checked wiring, triple checked the pin out software inputs for mach 3 to make sure that they were correct. All the settings were correct. Ripping the board out and going through the X axis section and re-flow all the joints just in case one is barely connected. I posted on the hobbycnc help forum as well with no reply yet.</p> <p>I will reflow and get back to everyone. </p>