506,584 active members
4,039 visitors online
Register for free
Login
IndustryArena Forum > MetalWorking Machines > Okuma > OKUMA TAPPING WITH G84 AND G284
Results 1 to 10 of 10
  1. #1
    Registered
    Join Date
    Nov 2017
    Posts
    20

    Question OKUMA TAPPING WITH G84 AND G284

    While tapping on my okuma with g84 and push the feed hold button the tap does not stop and continuous until the filal depth.
    On the other hand with g284 if you push the feed hold button the tap stops and go to the top height waiting to push again the feed button..
    The problem is that g284 is only for synchro tapping and I use a floating tapper . What problem may arise if I use floating tapper
    with cycle for synchronized tapping ? I want to use G284 for having the option to stop the tap if something goes wrong.

  2. #2
    Member
    Join Date
    Jun 2015
    Posts
    2810

    Re: OKUMA TAPPING WITH G84 AND G284

    hy antonismel, at 1st entrance, the spring mechanism inside the holder is compressing a bit; when you re-enter, the spring should be more chill, because there is less resistance, so, if you see that the tap is re-entering the hole just fine, then you have nothing to worry about

    but, if you see that the tap is not re-entering fine, it means that the tap can no longer find it's previous entrance, and this is caused because, at initial entrance ( 1st entrance ), the compression / pitch was too big ( i don't believe that this happens to you )

    also, if you go directly to z bottom, you will achieve a more consistent tapping depth, in comparison to when exiting & reentering; however, it may happen at a scale that may not matter / kindly
    Ladyhawke - My Delirium, https://www.youtube.com/watch?v=X_bFO1SNRZg

  3. #3
    Registered
    Join Date
    Nov 2017
    Posts
    20

    Re: OKUMA TAPPING WITH G84 AND G284

    Until now I am using G84 (for floating tapper) .Now I want to use G284 (for synchro tapping ) but with floating tapper . I want to use G284 for having the option to stop the tap if something goes wrong.I am not going to make a pegging tapping or stop it without reason. So you are saying that there is no problem to use a synchro cycle without synchro tools (tapper and tap)?

  4. #4
    Member
    Join Date
    Jun 2015
    Posts
    2810

    Re: OKUMA TAPPING WITH G84 AND G284

    yup, i understood what you do; is ok / just be carefull, because you may encounter problems when re-entering

    however, if tap life is ok, then nothing to worry about

    if the tap is small, machine won't feel it; if it is big, look at spindle load, so to have a clue

    if you wish to check if the tap is biting wrong, simply inspect the entrance, the chamfer of the hole : if something is not ok, then the chamfer surface will show some damage / kindly
    Ladyhawke - My Delirium, https://www.youtube.com/watch?v=X_bFO1SNRZg

  5. #5
    Registered
    Join Date
    Jul 2010
    Posts
    281

    Re: OKUMA TAPPING WITH G84 AND G284

    In short, you can float tap with a floating holder only. You can rigid tap with a floating holder OR a rigid holder.

    You may have a small issue possible if you exit and re-enter a hole over and over again if you rigid tap with a floating holder, but if you're re-entering a tapped hole that much after the first time you've run something, you're doing it wrong and need to reconsider your process to tapping a hole.

  6. #6
    Registered
    Join Date
    Apr 2009
    Posts
    1123

    Re: OKUMA TAPPING WITH G84 AND G284

    As a side note, you can change your G84 cycle to be synchronous by a parameter setting. I see no reason to stick with the floating holder unless it's just that you already have the holders. Sync is always better and more flexible for doing things such as peck tapping etc. - Both Tea Hole and Kitty are correct.

    Best regards,
    Experience is what you get just after you needed it.

  7. #7
    Registered
    Join Date
    Nov 2017
    Posts
    20

    Re: OKUMA TAPPING WITH G84 AND G284

    Thanks a lot for the help . I never re-enter a tapped hole. I am just not so familiar with Okuma's codes.I am a Heidenhain child ! I know that with parameter you can change G84 to synchronous or floating. But in G284 its only synchronous.

  8. #8
    Member
    Join Date
    Jun 2015
    Posts
    2810

    Re: OKUMA TAPPING WITH G84 AND G284

    hey antonismel, i remembered that you also posted this, a while ago : https://www.cnczone.com/forums/okuma...l-tapping.html

    so, there was a thing, you needed to exit and re-enter, you went on holiday on greek islands, and still, after a lot of party, you still need to exit and re-enter funny, ha ?

    about this, tea hole was spot on : " You may have a small issue possible if you exit and re-enter a hole over and over again ... need to reconsider your process to tapping a hole "

    so, what is actually going wrong ? why do you need to exit and re-enter ? i mean, even if you use g284, let's do it with g84, so to save time , etc ... are you using lower quality taps ? do you have a problem with chip evacuation, is the hole realy biiiiiig/deeeeeeep, what is it ?

    Quote Originally Posted by antonismel View Post
    I never re-enter a tapped hole. I am just not so familiar with Okuma's codes.I am a Heidenhain child
    you are so innocent so, is like only an okuma machine needs to re-enter, not also a heidenhain; okuma is faulty, while on a heidenhain, so far, you never needed to re-enter / you got me


    Quote Originally Posted by OkumaWiz View Post
    both Tea Hole and Kitty are correct
    ohh, you are so kind : what about a group hug ? you hug tea-hole, i hug you, combinations
    Ladyhawke - My Delirium, https://www.youtube.com/watch?v=X_bFO1SNRZg

  9. #9
    Registered
    Join Date
    Nov 2017
    Posts
    20

    Re: OKUMA TAPPING WITH G84 AND G284

    Oh deadlykitten you are a dirty mind and I like it !!! (flame2) the question was hypothetical . I want to know what I can do before a problem occurs . My vacations was great in the Greek islands but without a lot of re-entering!!! My taps are from OSG and Guhring . In heidenhain I can figure the solutions. At okuma not yet. I hope to answer all of your questions... :cheers:

    Quote Originally Posted by deadlykitten View Post
    hey antonismel, i remembered that you also posted this, a while ago : https://www.cnczone.com/forums/okuma...l-tapping.html

    so, there was a thing, you needed to exit and re-enter, you went on holiday on greek islands, and still, after a lot of party, you still need to exit and re-enter funny, ha ?

    about this, tea hole was spot on : " You may have a small issue possible if you exit and re-enter a hole over and over again ... need to reconsider your process to tapping a hole "

    so, what is actually going wrong ? why do you need to exit and re-enter ? i mean, even if you use g284, let's do it with g84, so to save time , etc ... are you using lower quality taps ? do you have a problem with chip evacuation, is the hole realy biiiiiig/deeeeeeep, what is it ?



    you are so innocent so, is like only an okuma machine needs to re-enter, not also a heidenhain; okuma is faulty, while on a heidenhain, so far, you never needed to re-enter / you got me




    ohh, you are so kind : what about a group hug ? you hug tea-hole, i hug you, combinations

  10. #10
    Member
    Join Date
    Jun 2015
    Posts
    2810

    Re: OKUMA TAPPING WITH G84 AND G284

    ok ... if you tap a lot, check attached : internal coolant, rapid shank, vhm head

    forming, not cutting; here : https://www.lmt-tools.com/en/

    kindly
    Ladyhawke - My Delirium, https://www.youtube.com/watch?v=X_bFO1SNRZg

Similar Threads

  1. okuma syncronized tapping
    By dec11ad in forum Okuma
    Replies: 1
    Last Post: 12-10-2014, 06:51 AM
  2. Okuma MC-4VA - Rigid Tapping?
    By BB72CAMARO in forum Okuma
    Replies: 2
    Last Post: 12-17-2012, 10:39 PM
  3. Okuma OSP5000-LG Tapping
    By BB72CAMARO in forum G-Code Programing
    Replies: 6
    Last Post: 01-03-2012, 11:54 PM
  4. Replies: 8
    Last Post: 08-21-2011, 08:05 AM
  5. Okuma OSP Tapping Cycle
    By pyropainter in forum G-Code Programing
    Replies: 11
    Last Post: 04-24-2010, 07:09 AM

Tags for this Thread

Posting Permissions

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