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IndustryArena Forum > MetalWorking Machines > Daewoo/Doosan > Doosan Lynx 220 LMS-C does not syncronize on the first M204 or M203 of the day.
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  1. #1
    Join Date
    Sep 2008
    Posts
    87

    Doosan Lynx 220 LMS-C does not syncronize on the first M204 or M203 of the day.

    2014 machine, OiM-D control.

    Hi, I have a problem that I cannot figure out, the sub spindle does not sync the very first time I try a M203 or M204 command since power up. After the first time, it is fine. I run a warm up program that uses both spindles, but if you forget then one of the collets gets galled up or the machine errors out because of the sync not happening.

    Any thoughts? It is driving me nuts, I forgot to run the start up program last night and beat up a new 3J collet.

    Pics and videos here in case they help: https://photos.app.goo.gl/jvRWn6ayaSdcHfmz2



    here is a snippet of the warm up program. My transfer sub program also fails the first time..
    O1000(LYNX-WARMUP)

    M34
    M134
    G97

    M203P11S100
    G4P90000(DWELL 90 SEC)

    M203P11S200
    G4P90000(DWELL 90 SEC)




    Any help appreciated. Thanks!

  2. #2
    Join Date
    Sep 2008
    Posts
    87

    Re: Doosan Lynx 220 LMS-C does not syncronize on the first M204 or M203 of the day.

    I still don't know why this is happening, but here is my band aid solution. Hope this helps someone...

    In the warmup program:
    O1000(LYNX-WARMUP)

    G97

    M203P11S100
    #115=1(SYNC RAN ONCE FLAG) <------------------------------------***
    (THIS MACHINE DOES NOT SYNC THE FIRST TIME)
    G4P90000(DWELL 90 SEC)

    In the transfer program:
    O8101(PART TRANSFER OPTIONAL PULL)
    IF[#115GT0]GOTO2
    #3000=81(WARM UP NOT RUN)
    N2


    ----

    Parameter 6001 bit 6 must be set to 1. This does not clear all 100 series macro parameters on every reset, only power on.

  3. #3

    Re: Doosan Lynx 220 LMS-C does not syncronize on the first M204 or M203 of the day.

    What isn't synchronizing? The speed or the Cs? Do you start the spindles after clamping or before?

    For speed, try dwells after clamping... or clamping while spinning, but dwelling after m203. For Cs, you're supposed to orient the spindles first with g28 H0. and use m213/214. Can't hurt to do it before m203s

  4. #4

    Re: Doosan Lynx 220 LMS-C does not syncronize on the first M204 or M203 of the day.

    Not sure if it makes a difference, but I always set the sub spindle speed independently for pickoff. i.e g97 s1000 p11: g97 s1000 p13

    I'm new to the lynx, but every dual spindle lathe I've run had multiple turrets, so you always set speed for each side. I've noticed it's quite slow to execute clamps and get up to speed, so having the speed assigned prior can't hurt.

  5. #5
    Join Date
    Nov 2012
    Posts
    9

    Re: Doosan Lynx 220 LMS-C does not syncronize on the first M204 or M203 of the day.

    Does your Lynx have Integral spindles? if so the issue is with the spindle motors not knowing if they are both in high or low phase.

    This should fix the issue,
    G97
    M203S0
    M203S2300

    This also may apply if your using your main spindle or the sub spindle but not in synchronous and in separate operations here are those examples
    G97
    M3 S0 P11 (MAIN SPINDLE)
    M3 S2300 P11

    G97
    M3 S0 P13 (SUB SPINDLE)
    M3 S2300 P13

    The gulling in the collet is because one spindle is lagging behind the other so when you place the "M203S0 before the actual synchronous spindle speed you require pay close attention you should here a relay switch in the back main cabinet of the machine you should also notice the spindles will not have the quick snap when both spindles turn on and should be a gradual run up to the speed you want.
    believe me I had the same issue of the gulled collets on a Doosan 2100SY machine and it took a year and a half for the Doosan distributor service tech. that we bought the machine from brand new from to figure it out.

    If you want to know the nation wide distributor who we purchased the machine from P,M, me the distributor we purchased our Doosan from is giving Doosan machines a really bad name not because of the machine but because of their really really poor service and will most likely never buy from them again!!

  6. #6
    Join Date
    Sep 2008
    Posts
    87

    Re: Doosan Lynx 220 LMS-C does not syncronize on the first M204 or M203 of the day.

    Interesting, my machine spins around once out of sync with the M203S0 command. Then it is synced when the second M203 is placed. I guess you have to issue the M203S0 before you close the collet on the material.

    Thanks, will implement.

  7. #7
    Join Date
    Nov 2012
    Posts
    9
    Quote Originally Posted by avongil View Post
    Interesting, my machine spins around once out of sync with the M203S0 command. Then it is synced when the second M203 is placed. I guess you have to issue the M203S0 before you close the collet on the material.

    Thanks, will implement.
    let me know how it works out for you there are other tricks but it does involve going into some parameters not so fun though

  8. #8
    Join Date
    Sep 2008
    Posts
    87

    Re: Doosan Lynx 220 LMS-C does not syncronize on the first M204 or M203 of the day.

    Quote Originally Posted by KJH1983 View Post
    let me know how it works out for you there are other tricks but it does involve going into some parameters not so fun though
    Thanks for the tips I got it figured out now. Interestingly phase sync, M213 and M214 must be started off the part, then clamped onto it. if anyone else has this problem, here is the code that works. If you don't use this order, the machine just hangs with no error message. Very frustrating.


    (***SUB-SPINDLE APPROACH***)
    M110(INTERFERENCE CHECK OFF)
    M31 (INTERLOCK BY-PASS FOR MAIN SPINDLE)
    M131(INTERLOCK BY-PASS FOR SUB SPINDLE)
    M169 (SUB OPEN)
    G56(PART TRANFER WCS)
    G0B0.0(**CHECK NUMBER**)

    G54(LEFT SPINDLE WCS)
    G0X[#500+#510]

    (SYNC SPINDLES WITH SUB OPEN)
    (M213 M214 SPEED AND PHASE SYNC)
    (M203 M204 SPEED SYNC)

    M110(INTERFERENCE CHECK OFF)
    M31 (INTERLOCK BY-PASS FOR MAIN SPINDLE)
    M131(INTERLOCK BY-PASS FOR SUB SPINDLE)
    M169 (SUB OPEN)
    G97S750M214P11(USE G97 FOR PHASE SYNC)
    G4P500

    G56(PART TRANFER WCS)
    G98(FEED MIN)
    M86(TORQUE SKIP ON)
    G31B-#512F60.(FEED TO SUB CLAMP POS)
    M87(TORQUE SKIP OFF)
    G4P500

    G99M168(SUB SPINDLE CLAMP)
    G4P500

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