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Thread: Mill Crash!! Please help!!??

  1. #1

    Post Mill Crash!! Please help!!??

    Here's what happend!

    Was cutting a slot with a circular saw in a piece of stainless. Things were going nice and easy until just before the end of the cut. A carbide tooth on the blade broke and the blade jammed in the slot, stopping the mill instantly. The saw arbor turned in the spindle a half inch or so. The collet key cut a groove and locked the arbor in the spindle. Removed the circular saw and tried to turn the arbor back in line with the collet groove. Finally had to drift out the arbor.

    Here's the problem. (Bridgeport Clone)

    I think the spindle bearings are oK. But when I tried to turn the arbor back into alignment, something got screwed up. The coarse feed doesn't work anymore, and the fine feed stays engaged. If I put a little pressure on the coarse feed it will move the quill up and down with a clicking sound. Not a good sound. The power feed works OK both up and down except when it hits the set depth it doesn't disengage the fine feed and allow the quill to return.

    The head is a little noisy now but that could be in part due to a new belt I installed (Hopefully). Also have a couple small burs in the spindle that I will carefully remove with a shaped stone.

    Here's the question(s)...

    Since the "j" head has 6.5 million obscure parts, where would I begin to find, then repair this problem? And can I do it without removing the head from the machine as I don't have anyone to help with the job?

    Thanks in advance

    Desperately waiting

    Mike

  2. #2
    Join Date
    Aug 2005
    Location
    Maryland
    Posts
    643

    Post

    Hi Mike,

    A friend of mine runs a machine tool rebuilding business. He'll rebuild a J head for $800. email me if you're interested and I'll send you the contact info.

    ------------------
    Leigh
    Leigh
    The entire content of this post is copyright by, and is the sole property of, the author. No assignment
    of title nor right of publication shall ensue from presentation of this material on any computer site.

  3. #3

    Post

    Leigh...

    Appreciate the input. Still working thru issues for now. Hopefully I won't need a rebuild. I will save your post and if my luck is bad I'll send you a e-mail for the contact info.

    Thanks again

    Mike

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