Okuma Lathe Problem
Close
Login to Your Account
Results 1 to 10 of 10
  1. #1
    Join Date
    Feb 2005
    Location
    Marshall, Missouri
    Posts
    15
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default Okuma Lathe Problem

    We just purchased two Okuma LB 3000 EX II lathes one has the new OSP-P300 L control.

    With no warning and just cause the machine crashed and crashed hard.

    We made 6 good parts then the crash.

    In our shop we do not have a set-up person the operators are well trained they do all their own set-ups the guy
    running this machine was setting up another lathe at the time of the crash so he did not see what happened.

    We have analyzed the program and went thru everything on our end.

    Our local dealer has been thru this thing and is working on rebuilding it, this new control even has a log file of everything the machine does Okuma did not
    find anything we did to cause this problem.


    However we still cannot get an explanation as to what caused the crash.

    Okuma is standing by the machine warranty so we assume they have a problem but have yet to tell us what.

    Anybody else seeing any problems with the OSP-P300L?

  2. #2
    Join Date
    May 2014
    Location
    Utah, USA
    Posts
    53
    Post Thanks / Like
    Likes (Given)
    30
    Likes (Received)
    1

    Default

    The log file shows all offsets made? Including zero set shifts?

  3. #3
    Join Date
    Jul 2005
    Location
    Cottage Grove, MN 55016
    Posts
    8,031
    Post Thanks / Like
    Likes (Given)
    4271
    Likes (Received)
    4747

    Default

    If they can't find a machine issue, maybe it was operator error and he / she does not want to get into trouble. Many times someone someone forgot to tighten the tool and may have come out. How is the ari pressure in the shop? Could there have been a overload of the compressor and you had pressure drop? Have them check and see if the chuck safety lock is inoperable and if you accidentally stepped on the release the chuck opened. Did they check for ball screw back-lash on all the axis's? I would suggest you do several dry runs to test it before machining a art again.. If it's a mechanical issue and the dealer needs some help or have any rebuilding issues on other machines?, I am down on Lake of The Ozarks at the cabin for a few days and will be heading back north next week and could detour up 65. Rich

    PS: I will be retiring here someday :-)

  4. #4
    Join Date
    Dec 2007
    Location
    Southeastern US
    Posts
    6,384
    Post Thanks / Like
    Likes (Given)
    845
    Likes (Received)
    2809

    Default

    Likely a software bug in the control. Talked to another company a couple months ago with them and there were some software bugs when they first arrived (I forget the exact extent of those). Some bugs never show up in testing because the right combination of events never presents itself. Okuma is not the only one to have these issues. Any new generation control will have some bugs to be worked out that only occur in the field under field conditions where the randomness of events and operations comes into play.

  5. #5
    Join Date
    Feb 2005
    Location
    Marshall, Missouri
    Posts
    15
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default

    Big Laing the log shows from what we are being told that the operator made no changes to the program from part to part, in fact all he did was change parts
    it ran the rough turning tools both id and od then crashed on the second finish tool a face grooving tool other than that they are not telling us anything except they are fixing it.

    Richard Okuma would not be fixing this at no cost if they thought there was any way it was an operator issue, the log would show if the chuck opened, when it goes back together it will get dry run to death.

    Tony we are thinking software bug ourselves.

    PS: Richard the Ozarks are a great place we love it down that way, but I hope your keeping a place up north for the summer it's so nice up there in the summer my daughter used to live in a small town Cosmos west of Hutchinson we loved it up there in the summer except for the biggest mosquito's I have ever seen.

  6. #6
    Join Date
    May 2012
    Location
    A Barn In Oklahoma USA
    Posts
    25
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default

    I'd try to duplicate the crash if you can. Before you change too many things. Sounds bugy to me.

  7. #7
    Join Date
    Jun 2012
    Location
    wisconsin, usa
    Posts
    33
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    5

    Default

    we had a rebuilt LU25 delivered awhile back. along with a couple other small issues, it would sometimes loose Z zero (luckily always in positive direction). we were able to connect the machine online so they could get into the control. they couldn't find anything wrong either, but still insisted it was our fault. anyway, they finally sent out a tech. after a couple days, he found a connection in the elec. cabinet had come loose during shipping. easy fix, but between a few hundred wires & a intermittent problem, a real witch hunt to find. although it's possible, probably not the control itself causing problems. good luck!

  8. #8
    Join Date
    Sep 2014
    Country
    UNITED STATES
    State/Province
    Oklahoma
    Posts
    9
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default

    It actually records every keys stroke made on the machine.

  9. #9
    Join Date
    Sep 2020
    Country
    UNITED STATES
    State/Province
    California
    Posts
    1
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default

    When you say hard crash do you mean like full rapid turret into spinning chuck? Or is this tool failure and part ejection? I would check feeds and speeds. What material are you cutting? Depth of cut could be too aggressive. Is your work holding stable or are you barely gripping the part? Some materials like stainless and superalloys can wear an insert down quick? Was the coolant turned on? Got a picture of the part? This intrigues me. I just started running some okumas myself.

  10. #10
    Join Date
    Dec 2018
    Country
    UNITED STATES
    State/Province
    Pennsylvania
    Posts
    163
    Post Thanks / Like
    Likes (Given)
    413
    Likes (Received)
    50

    Default

    It's a 6 year old thread. Let it go.

  11. Likes topdawg, charlie gary, SMT liked this post

Bookmarks

Posting Permissions

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