Results 1 to 5 of 5
  1. #1
    Join Date
    Feb 2012
    Location
    Willunga
    Posts
    112

    Default Unexpected danger from an AXA toolpost!

    Hi all,

    I thought the I might share this in the hope that it is something that we might all learn from...

    Recently I was machining a bronze casting for a 7 1/4 model locomotive chimney cap. This is a large hunk of bronze bored to fit over a 63mm stainless chimney and then with most of the outer surfaces compound curves. I spent a long time machining the curves with HSS tools that I ground to form. Doing the job involved a lot of tool changes but as I have an AXA quick change tool holder this presented no particular problem. I made these changes without stopping the spindle, something I have done on many hundreds of occasions.

    On one occasion I released the tool carrier by giving the lever a flick with the palm of my right hand, the locking lever then spun around until it came into contact with the face of the chuck where it was hit by a jaw. This broke the lever off and sent it flying past my left ear. Something that I by no means enjoyed.

    Fortunately there was no major damage and I was able to machine and re-thread the handle to fit.

    I will however keep this well in mind from now on and either stop the lathe or move the carriage away before changing a tool carrier.

    We live and we learn, if we are careful and fortunate.

    Regards

    Ian

  2. #2
    Join Date
    Jun 2007
    Location
    sydney ( st marys )
    Age
    60
    Posts
    4,357

    Default

    Should it be titled unexpected danger from not stopping spindle?

  3. #3
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    55
    Posts
    5,480

    Default

    Maybe have a look at your set up. I just tried this with my QCTP and the lever goes from around 2:30 through to 7 o'clock when I'm standing in the normal operating position.
    The way you have described it does sound hazardous - maybe install a stop to limit travel?

    Michael

  4. #4
    Join Date
    Mar 2014
    Location
    South of Adelaide
    Posts
    640

    Default

    Never change tools with the spindle running, one slip and you are risking serious injury.

  5. #5
    Join Date
    Feb 2012
    Location
    Willunga
    Posts
    112

    Default

    Thanks Michael that is a good suggestion.

    Regards

    Ian

Similar Threads

  1. Power sanding aluminium angle - any hidden danger
    By Arron in forum SAFETY FORUM
    Replies: 5
    Last Post: 5th Nov 2017, 07:50 AM
  2. Unexpected businesses with engineering shops
    By .RC. in forum METALWORK GENERAL
    Replies: 30
    Last Post: 6th Mar 2016, 11:27 AM
  3. A Different QC Toolpost
    By MacPuddock in forum METALWORK GENERAL
    Replies: 3
    Last Post: 27th Mar 2014, 12:42 PM
  4. Earth Path for Welder - Danger?
    By Bloss in forum WELDING
    Replies: 0
    Last Post: 21st Feb 2011, 07:04 PM
  5. Q C Toolpost Id
    By Grahame Collins in forum THE HERCUS AREA
    Replies: 3
    Last Post: 5th Feb 2011, 07:31 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •