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  1. #61
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    Woo Hoo! Finally headed back home tomorrow from San Antonio, should be home on Friday.

    For those of you just tuning in, my project was on hold since Jan while I went out of town for work. Can't wait to get back on this project. Also, I just ordered my power supply today from cncrouterparts.com so I should have that in a few days.



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    Cool! I have mounted a new 1/2" x 10 X axis leadscrew into ball bearings on mine and have a new leadscrew with a no-backlash plastic nut for the Y axis to replace the old "V" threaded one. Today I machined a chunk of 3" round 4140 to be the new "tool-post holder" since I've removed the compound. This will bolt directly to the cross-slide and the stock tool-post/holder will sit atop it. Someday I will figure out how to hook something (solenoid, motor, etc.) up to it to rotate different cutters into position. Everything I plan on doing will have a primary goal of vibration dampening and rigidity...



  3. #63
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    4140?!? Wow Justin, you didn't mess around buddy! Sounds great, you should start a thread and post pics!



  4. #64
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    I can get scrap like this at work but it really makes my 9x20 lathe grunt to turn big stuff.



  5. #65
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    Quote Originally Posted by RotarySMP View Post
    I took this photo while it was clean the other day. Well, cleanish...
    Mine hasn't been that clean since, let's see, when did I buy it, uh, '96 I think. Yup, it was that clean in 1996, for a brief moment.

    Nice looking sheet metal work, Mark. Looks clean and professional. Tough to do a good job like that without access to a sheet metal shop. I miss that from my last job. I do sneak into the Aviation Schools shop once in a while, but they give me funny looks. Fellow off-roader was a grad student and TA there, but he's long gone.



  6. #66
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    Default It's alive!!!

    Got the G540 & power supply hooked up today. After an initial hiccup in learning how to utilize the G540 config file found on Gecko's website, the mighty 7x10 came to life!

    I still have to hook up my Z axis limit switches and configure the steps per inch settings, but all seems well. The motors purr smoothly in jog mode, although I have not yet adjusted the trim pots on the G540.

    Happiness in Bill-ville today! :rainfro:



  7. #67
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    The bottom and back of the enclosure were bent up on brake at the airline I used to work for. The ends were bend with a hammer over strips of steel clamp to the bend line.

    Regards,
    Mark


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    After some more playing around with the stepper settings in Mach, I can happily report that the setup runs as good as it looks! Seems very quick, smooth, and solid. Video will come soon, once I make sure all the settings are right AND I learn how to write a simple program for demo.
    Been way too many years since I wrote a CNC program.



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    Congratulations!



  10. #70
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    Thanks Justin..... I hope to post a video of it running a program tonight.

    Stay tuned!!



  11. #71
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    First dry-run video! :rainfro:

    [nomedia="http://www.youtube.com/watch?v=8tX5gzBz7Nk"]YouTube- Video0009.mp4[/nomedia]


    Photobucket Video:



    Last edited by blades; 06-22-2010 at 09:37 PM.


  12. #72
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    Looking Great!



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    Well done!!

    Dave

    Dave->..


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    Wen I was young, I spent most of my money on fast women, slow horses, and cheap booze. The rest of it I just wasted.


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    It's alive!!!!



  16. #76
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    Thanks guys! :rainfro:
    Next up is some enclosure work for the electronics.



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    good work blades..

    Hey, is the stepper taking all the in/out force of the long screw?

    I was wondering because, you said the other end was just being held to keep the screw from whipping around, and I had noticed that most stepper shafts always have a little in/out play....

    Justin in AZ



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    Hey Justin,

    Yes, the motor is taking the full force of the screw in Z travel. That's one of the first things I looked at before setting it up this way, knowing that end-play in the screw wouldn't be acceptable. Even pushing & pulling quite hard, I could detect no end-play in these motors at all. I don't forsee any issues with it, since I'm only going to be doing very light work on it.



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    I just checked one of my steppers as well....no end play.



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    Quote Originally Posted by blades View Post
    Hey Justin,

    Yes, the motor is taking the full force of the screw in Z travel. That's one of the first things I looked at before setting it up this way, knowing that end-play in the screw wouldn't be acceptable. Even pushing & pulling quite hard, I could detect no end-play in these motors at all. I don't forsee any issues with it, since I'm only going to be doing very light work on it.
    Are you concerned this will cause issues with the stepper? I don't imagine the stepper is designed to take this type of punishment? Are there thrust bearings on the other end?



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7 x 10 project started

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