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Thread: Matt's Grizzly G0602 CNC Conversion

  1. #13
    Registered Turbo442's Avatar
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    My WEG 3 phase motor is bolting on without too much difficulty. I had to do a little machining to make it work. I already had this WEG so I thought I would save some money and use it instead of buying something new. There is quite a bit of info on the web about upgrading the G0602 using a 1 HP D80 3 Phase motor that should bolt right up without much work at all. I kept the ability to use the 'back gear' necessary for heavy automated drilling if the need ever arises. I doubt I will really need the low gearing for turning facing operations, if I really needed that much power it would probably rip this thing apart! We will see though.

    Attached Thumbnails Attached Thumbnails Matt's Grizzly G0602 CNC Conversion-339-jpg   Matt's Grizzly G0602 CNC Conversion-340-jpg  
    Last edited by Turbo442; 03-02-2013 at 11:04 PM.


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    Quote Originally Posted by brianbonedoc View Post
    Is that a Novakon mill in the back of the photo?

    If so, how do you like it?
    Is a NM145 about 1 1/2 years old, I really like it, I think I paid around $4000 new for it. Variable speed spindle cranks up to 6000 RPM, flood coolant, quite rigid setup. I need to build an enclosure though LOL! The ball screws on it are pretty nice as well, I measured the back lash a while ago I think it was around .0004. Really easy to work on as well if needed. The PC, power supplies, and drivers are all in the rear cabinet. I would do it over again in a heart beat.



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    Quote Originally Posted by HimyKabibble View Post
    I have a Novakon Torus Pro/Servo on its way, that I hope will be arriving next week....

    25"X x 15"Y x 12"Z travels, 500 IPM with AC servos, 6000 RPM Spindle. It will get a full enclosure, PDB and 12-tool ATC very soon after it arrives.

    Regards,
    Ray L.
    Yeah that should be awesome, I think you will be quite happy.



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    Stripped the parts off the lathe today, only took a few minutes.

    Attached Thumbnails Attached Thumbnails Matt's Grizzly G0602 CNC Conversion-002-jpg   Matt's Grizzly G0602 CNC Conversion-003-jpg  


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    Couple of thoughts on this conversion:

    1. My main goal of this project is usability, reliability and aesthetics. Its not much use to me if I can't use it when I need it.

    2. I don't plan on keeping the compound. I plan on using my phase II AXA tool post so I will machine a steel spacer block to raise up the tool post. I may set it up so I can run two AXA tool posts, or at least a drill chuck for automated drilling. Ditching the compound will give me a bit more rigidity as well.

    3. Still trying to plan out the electronics. I know I want proper Estop functionality tied into the VFD and Mach. I obviously want automated control over the spindle but I want to be able to switch to manual control as well for checking part run out and vibration. This control will be most likely located in the original switch control location.

    4. Trying to figure out if I need a separate electronics cabinet or if I can work with the space provided.

    5. Will go with Mach parallel control for now, might switch to a Ethernet smooth stepper later.

    6. Will use the charge pump feature on the BOB.

    If anyone has any cool ideas please chime in. Now is the time!

    Last edited by Turbo442; 04-01-2013 at 01:08 AM.


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    In my opinion the G0602 saddle as it comes from the factory needs to be checked out carefully if you want good results. In my case, as delivered I could grab the saddle and lift it up and down about .003" in the back" After some careful fitting of the gibs using sandpaper and a stone I was able to eliminate this slop. Also the correct type of oil and proper lubrication are critical to this tolerance. I noticed the lead screw banding went away after I made this change. Here is an example of G0602 lead screw banding (I found this photo on the web) when using the power feed. In the second photo you can see the NON ADJUSTABLE saddle gibbs. On my 12x36 lathe these are adjustable. Not sure if I am using the proper terminology. Please correct me if I am wrong.

    Attached Thumbnails Attached Thumbnails Matt's Grizzly G0602 CNC Conversion-dsc_5043-jpg   Matt's Grizzly G0602 CNC Conversion-341-jpg  
    Last edited by Turbo442; 03-02-2013 at 11:03 PM.


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    Default Matt's Grizzly G0602 CNC Conversion

    Sweet! I was thinking about the new Torus jr w servo spindle at $6500 it's seems good for the $



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    Motor is now mounted solid, belts look good. I wired up the motor and VFD temporarily to check functionality and vibration levels at high RPM. Everything is running smooth. I made sure I oiled the spindle bearings first. I oiled them from the inside with synthetic mobil 1 gear and bearing oil. For those not familiar with VFD operation, you can dial the frequency way up. Its pretty scary actually. Gives new meaning to a full enclosure. I also ran it up to 3000 RPM with the 3 jaw chuck installed although not in this video. It seemed balanced very well and did not show any unusual vibration. Nothing seemed to get get hot. Looks like this thing will be able to rev up!

    G0602 high RPM spindle test - YouTube



    Last edited by Turbo442; 04-10-2013 at 11:11 PM.


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    I am kicking some ideas around. Possibly mounting the VFD like this with a factory looking sheet metal enclosure painted to match. At least the VFD color matches the lathe.

    Edit: 3-31-13, decided to mount the VFD above the motor on the back side of the lathe.

    Attached Thumbnails Attached Thumbnails Matt's Grizzly G0602 CNC Conversion-360-jpg  
    Last edited by Turbo442; 04-10-2013 at 11:11 PM.


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    Registered Crevice Reamer's Avatar
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    Nice thread Matt. I'm enjoying this. Just a comment about the spindle bearings:

    They come from the factory greased, and using the oilers wipes out the grease. (Why did they put that there?) You can see it weeping at the headstock already. You might want to clean it out and get some high-temp grease in there, then refrain from using the oilers, to prevent seizure. Some zerks would be better.

    CR.

    http://crevicereamer.com
    Too many PMs. Email me to my name plus At A O L dot com.


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    Not much done today. Index disk installed. Next I will mount the sensor. Machined it on the CNC mill out of .049 sheet aluminum.

    Attached Thumbnails Attached Thumbnails Matt's Grizzly G0602 CNC Conversion-003-2-jpg   Matt's Grizzly G0602 CNC Conversion-disk-jpg  
    Last edited by Turbo442; 03-04-2013 at 10:39 AM.


  12. #24
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    Quote Originally Posted by Crevice Reamer View Post
    Nice thread Matt. I'm enjoying this. Just a comment about the spindle bearings:

    They come from the factory greased, and using the oilers wipes out the grease. (Why did they put that there?) You can see it weeping at the headstock already. You might want to clean it out and get some high-temp grease in there, then refrain from using the oilers, to prevent seizure. Some zerks would be better.

    CR.
    Yes CR I agree, I did my best to flush out the oil today with some wax and grease remover and some compressed air. Put some Kluber on the bearings. Time will tell how good of a job I did!

    Do you think if I installed a couple of zerks fittings in place of the oilers we can get grease to the rollers?



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