And the hits just keep on coming

New Home Forum Mostly Printed CNC – MPCNC Troubleshooting – MPCNC And the hits just keep on coming

This topic contains 8 replies, has 3 voices, and was last updated by  David Walling 2 hours, 54 minutes ago.

Viewing 9 posts - 1 through 9 (of 9 total)
  • Author
    Posts
  • #109666

    David Walling
    Participant

    I got the MPCNC put back together from upgrading to the Burly XYZ parts.

    I was running some test cuts. Nothing too extravagant, just cutting a rectangle perimeter using a 1/8″ single flute at .2″ DOC and 2ipm. Everything seemed to be going OK. There was minor chatter, but only in one direction on the rectangle, so I chalked it up to something still a tad loose… Then suddenly the bit stopped spinning and that unmistakable smell of ‘poof’ started floating up from the machine.

    Looks like my 500W spindle bit the dust 🙁 There was smoke coming out of the top of the cooling fan.

    I’ll probably go back to the dewalt spindle. I’ll need to find the locking key for changing bits as I don’t know what I did with mine during the move.

    This is starting to suck.

    #109672

    Ryan
    Keymaster

    If you get a chance take it apart and see what happened, I am interested to know if the bearings are that bad or if it was something else.

    This is starting to suck.

    No no no, chin up. You have the burly version, it should be a ripper now. The numbers you gave seem extremely conservative for wood/burly.

    #109679

    David Walling
    Participant

    I have never been able to hit the speeds everyone else has with my machine.

    #109782

    Tim
    Participant

    I have never been able to hit the speeds everyone else has with my machine.

    2 inches per minute? was that supposed to say 20?

    #109784

    David Walling
    Participant

    Currently? No. That’s not a typo.

    The best I saw with the 500w spindle was 5ipm with a 1/4″ end mill.

    We’ll see what I get when I switch back to the Dewalt.

    #109786

    Tim
    Participant

    Currently? No. That’s not a typo.

    The best I saw with the 500w spindle was 5ipm with a 1/4″ end mill.

    We’ll see what I get when I switch back to the Dewalt.

    cutting at 2ipm and .2″ DOC was probably generating a ton of heat, i’m surprised it wasn’t burnishing the material at that slow of a speed. could have contributed to the early death of your spindle…

    #109791

    David Walling
    Participant

    I had the spindle RPMs down to produce chips. I could speed up the RPMs, but then I was getting flex in the machine at the higher ipm.

    #110612

    David Walling
    Participant

    We’re up and running again.

    I have the Dewalt back on it. I ran a test cut.

     

    . 2 in DOC at 15ipm. I’m going to try increasing the DOC and lowering the feed later today.

    I’m still getting a little flex in the gantry when going in the direction that is away from the spindle.

    The Dewalt is loud, but with the shop, it’s less of an issue.

    • This reply was modified 5 hours, 58 minutes ago by  David Walling.
    Attachments:
    #110633

    David Walling
    Participant

    Are my rounded corners because my z is too long? I can raise my bed.

Viewing 9 posts - 1 through 9 (of 9 total)

You must be logged in to reply to this topic.