Results 1 to 12 of 12

Thread: J325 Spindle motor removal

  1. #1
    Registered
    Join Date
    Aug 2008
    Location
    USA
    Posts
    179
    Downloads
    0
    Uploads
    0

    J325 Spindle motor removal

    The simple answer is it takes two people ...but I want to see if I can take the spindle motor out now...Are there any clever ways to hoist it out? I don't have a gantry but I do have a come-along...just thought I'd ask...


  2. #2
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    18,961
    Downloads
    0
    Uploads
    0
    If there is a horizontal beam or something above to attach a simple block and tackle to, may be the cheapest/simplest way.
    Might even be possible single handed this way in a pinch?
    An old sailors way is a barrel hitch around the motor!
    Al.
    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


  3. #3
    Registered
    Join Date
    Feb 2009
    Location
    usa
    Posts
    4,019
    Downloads
    0
    Uploads
    0
    I've done the rope and grab by myself. Not that big of motor.


  4. #4
    Registered
    Join Date
    Aug 2008
    Location
    USA
    Posts
    179
    Downloads
    0
    Uploads
    0
    Hmmm barrel hitch I can see the why yur called the man...
    I'll give it a go!!!

    I used two ladders and a board then a large ratchet from a tie down to get it up part way. I just need to close the over head door to get an extra foot and viola...
    Last edited by lavrgs; 08-15-2011 at 08:47 PM.


  • #5
    Registered
    Join Date
    Aug 2008
    Location
    USA
    Posts
    179
    Downloads
    0
    Uploads
    0
    I got the motor out and got the back off to see the encoder and what I found doesn't look like what I expected...my rough count shows that it probably has 128 teeth so it will not work with my spindle drive -
    Is my best option to try and get an encoder or possibly buy a different motor?

    Can anyone tell me what this is? encoder, resolver or ?
    Attached Thumbnails Attached Thumbnails J325 Spindle motor removal-fanuc.jpg  


  • #6
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    18,961
    Downloads
    0
    Uploads
    0
    It is the same method used on Mitsubishi/Mazak spindles, it is a toothed wheel with two hall effect sensors with 90° (quadrature) detection.
    You could remove it and put a through-hole encoder from Renco or Toyo.
    You should not have to buy another motor.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


  • #7
    Registered MadPickinSkills's Avatar
    Join Date
    Feb 2008
    Location
    USA
    Posts
    88
    Downloads
    0
    Uploads
    0
    Quote Originally Posted by lavrgs View Post
    I got the motor out and got the back off to see the encoder and what I found doesn't look like what I expected...my rough count shows that it probably has 128 teeth so it will not work with my spindle drive -
    Is my best option to try and get an encoder or possibly buy a different motor?

    Can anyone tell me what this is? encoder, resolver or ?
    lavrgs, about how much space did you need above the machine to get it out? I'm going to have my spindle rebuilt in about a month and mine is in the garage so I'm worried about not having enough room above the machine to pull it out.

    thanks


  • #8
    Registered
    Join Date
    Aug 2008
    Location
    USA
    Posts
    179
    Downloads
    0
    Uploads
    0
    The motor is just short of two feet long . I used two ladders and a 2x4 to support the motor. I used a very heavy duty tie down ratchet and another tie down with 2 hooks put into the slots on the side of the mounting plate. I put the strap from the hooked tie down into the ratchet slot and was able to get the motor out far enough to lay it on its side so I could remove the back cover. I have a 10 foot ceiling so it wasn't too bad. Getting it to the ground would be a chore... If you had a cherry picker with a long enough boom you may be able to get it down but its a heavy beast 80-100++lbs I'd guess. Another option may be using the ladders and two people, it may be possible to swing the motor supported on one ladder so that two people could use the support and lower it down.


  • #9
    Registered
    Join Date
    Aug 2008
    Location
    USA
    Posts
    179
    Downloads
    0
    Uploads
    0
    Closing the loop/ on the spindle motor/Encoder update...I bought an encoder from Rotary Encoders By Encoder Products Company a model 260-N-T-02-H-1024-Q-HV-1-S/6-2-N...WHEW!!! OK so when wired "correctly" the motor spins backward (CCW), as a point of reference when in open loop the motor spins CW. Since I am not very knowledgeable about encoders my question is can it be wired to run the other way? I believe the motor could run in either direction and its possible that there is a parameter than could be switched BUT when changing back to open loop it runs in the CW direction...
    I'm a bit confused and frustrated because I thought this should be plug and play not plug and pray... Closing the loop on this motor has been a friggin' chore and its still not done.

    What I need is someone to call that can explain the errors in my ways - can someone recommend someone in the Pacific NW? I'll try the folks I bought it from but they weren't exactly on top of it when I bought the device...

    Thanks


  • #10
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    18,961
    Downloads
    0
    Uploads
    0
    To reverse the encoder phasing you need to reverse the A & /A connections if differential type.
    If it is a single ended type, i.e. A & B only, then change A & B.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


  • #11
    Registered
    Join Date
    Aug 2008
    Location
    USA
    Posts
    179
    Downloads
    0
    Uploads
    0
    Al you must excuse my lack of knowledge So here is what I have;not including the 5VDC and COM and it is running CCW
    1-A
    2-A'
    3-B
    4-B'
    Please rearrange the items for CW rotation
    Here's what I have tried without much luck...
    1A'
    2A
    3B'
    4B
    Didn't seem the change direction
    1B
    2B"
    3A
    4A'
    became unstable


  • #12
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    18,961
    Downloads
    0
    Uploads
    0
    If you change both the A pulses and both the B at the same time you end up with the same thing.
    You have to change only one or the other.
    In the first list you show, it would be swap 1 & 2.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


  • Similar Threads

    1. Starting the spindle - J325
      By MadPickinSkills in forum Tree
      Replies: 3
      Last Post: 01-25-2011, 08:22 PM
    2. Need Help!- J325 Spindle repeatability
      By ramsey321 in forum Tree
      Replies: 5
      Last Post: 01-22-2011, 05:17 PM
    3. Need Help!- Tree J325 Spindle Problem
      By Frisbee in forum Tree
      Replies: 1
      Last Post: 09-29-2010, 03:18 PM
    4. Spindle Motor Removal
      By HBFixedGear in forum Fadal
      Replies: 1
      Last Post: 03-29-2007, 05:20 PM
    5. R8 spindle pin removal
      By krymis in forum Industrial Hobbies (Support forum)
      Replies: 37
      Last Post: 01-08-2007, 08:42 AM

    Posting Permissions


     


    About CNCzone.com

      We are the largest and most active discussion forum from DIY CNC Machines to the Cad/Cam software to run them. The site is 100% free to join and use, so join today!

    Follow us on

    Facebook Dribbble RSS Feed


    Search Engine Friendly URLs by vBSEO ©2011, Crawlability, Inc.