Progress 1 Spindle(?) : I bent it :(

  1. rockweasel Member

    Messages:
    996
    Location:
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    Elliot Progress 1 Drill.
    "I'll just widen this hole a little." It was awkward to clamp the piece down, so I held on to it (gingerly) with my bad hand. The drill bit caught the hole and spun it out my grip. By the time I'd turned it off a few things had bent out of shape. Stupid mistake.

    The item I'm pointing at in the photo is bent. Is this the spindle?

    If so: Can I straighten it (or have it straightened), or do I need to source a replacement?

    TIA

    spindle.jpg
     
  2. eLuSiVeMiTe

    eLuSiVeMiTe Member

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    12,124
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    Machine it down. Thread it and screw another chunk of bar on. Recut the taper.?
     
  3. mtt.tr

    mtt.tr Member

    Messages:
    3,132
    Essex England
    Heat is probably the only option really you need to get the spindle out to have it done properly.
     
  4. rockweasel Member

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    996
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    All processes out of my reach.
     
  5. mtt.tr

    mtt.tr Member

    Messages:
    3,132
    Essex England
    Having looked again is that not just the chuck spindle.

    Drop the quill all the way down and you should be able to drift the morse taper out.

    I assumed this was a strange set up
     
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  6. brightspark

    brightspark Member

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    30,405
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    yarm stockton on tees
    if its on a morse taper- just drift it out and buy a new one with a chuck. Jacobs ones are readily available
     
    rockweasel likes this.
  7. WorkshopChris

    WorkshopChris Forum Supporter

    Messages:
    4,927
    Location:
    South East Essex
    I am guessing this is all part of the spindle, as it is threaded with an ejector nut. Haven't seen a Morse to Jacobs arbour with such a setup.
    EDIT
    But the slot does look like it would be for a morse drift.
     
  8. brightspark

    brightspark Member

    Messages:
    30,405
    Location:
    yarm stockton on tees
    look in the vertical slot above the nut it may have a taper in that can be ejected. and it may not as said above :)
     
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  9. cheb Member

    Messages:
    968
    Location:
    Outer Hebrides
    Mine looks the same, but it was just a slot. I drilled it and interference fit a spigotted chuck I had lying around.

    My assumption is the slot is for stopping the shaft turning when removing the chuck.
     
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  10. minimutly Member

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    1,223
    Location:
    Pembrokeshire Wales
    Press an v blocks, and some patience should sort that. Ideally need to put something on that taper to protect it first.
     
  11. brightspark

    brightspark Member

    Messages:
    30,405
    Location:
    yarm stockton on tees
    yes the chuck that came off then put a new one on
     
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  12. brightspark

    brightspark Member

    Messages:
    30,405
    Location:
    yarm stockton on tees
    I bent mine and got it true with the old chuck :)
     
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  13. Screwdriver

    Screwdriver Member

    Messages:
    6,394
    UK London
    Whatever you do, it will have to come out or you risk even more damage to the bearings (bushes?).

    Once you've got it out, you might get away with flame straightening but it does look a bit too far gone for that. Would need to be oxy fuel to pinpoint enough heat.
     
    slim_boy_fat likes this.
  14. Tinbasherdan

    Tinbasherdan Bodger in chief

    Messages:
    5,252
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    Bolton, England
    Where are you? If you’re close I can have a look and see what can be done on the lathe
     
  15. minimutly Member

    Messages:
    1,223
    Location:
    Pembrokeshire Wales
    If it bent, it can be unbent - there isn't the meat on that to machine a new taper in my opinion, but of course its only my opinion...
     
  16. rockweasel Member

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    Cheers. Too far away from you I'm afraid :(

    Lots of good advice. Another job to add to my list. Thank you everyone!

    ****

    This really has to be one of the best forums :)
     
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  17. Brad93

    Brad93 M J B Engineering

    Messages:
    8,941
    Location:
    Essex
    That appears to be a Jacobs taper machined directly onto the quill with the threads above used to push the chuck off the taper.

    The quill needs to be removed from the machine, placed in a set of V blocks on a flat surface and you need to get a DTI and find the highest point of deflection.

    Mark it with a Sharpie and take note of the reading.

    Then find the lowest point, which hopefully is directly opposite the highest point. If it isn’t then you’ve bent the taper in two directions.

    If it is opposite, Take a reading.

    Half it, now you know how much you need to press down to bring it back into alignment.

    You may want to use some heat to help things along.

    Heat the low side.
     
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  18. minimutly Member

    Messages:
    1,223
    Location:
    Pembrokeshire Wales
    How can something be bent in two directions then?
     
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  19. mtt.tr

    mtt.tr Member

    Messages:
    3,132
    Essex England
    That would compound bend very possible
     
  20. minimutly Member

    Messages:
    1,223
    Location:
    Pembrokeshire Wales
    Sorry, don't see it - bent in two places yes, one place two directions no.
     
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