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  1. #1

    Fanuc G84 rigid tapping code

    Hi, I'm doing some rigid tapping using the fanuc G84 code and was hoping someone could help me out. After tapping a hole it pauses for 3 to 4 seconds before moving to the next hole. Does not seem like a long time but it feels like an hour when your doing production. I just started using the funuc post processor in fusion 360 and hopefully I can fix this. Any help would be appreciated.

    Thank you,

    Jack

  2. #2

    Re: Fanuc G84 rigid tapping code

    Can you post a G code snippet, a few lines before and after a G84 cycle.
    Jim Dawson
    Sandy, Oregon, USA

  3. #3

    Re: Fanuc G84 rigid tapping code

    Quote Originally Posted by Jim Dawson View Post
    Can you post a G code snippet, a few lines before and after a G84 cycle.
    Here you go. It's 8 holes tapping.

    (DRILL9)
    N800 M09
    N805 M01
    N810 T5 M06
    N815 S400 M03
    N820 G04 X3
    N825 G54
    N830 M08
    N840 G00 X3.1819 Y-3.1819
    N845 G43 Z0.2 H05
    N450 M29 S400
    N855 G84 X3.1819 Y-3.1819 Z-0.75 R0.2 P0 F20.
    N860 X2.7134 Y-2.7134
    N865 X1.1092 Y-2.9565
    N870 X0.2318 Y-3.0686
    N875 X0.3535 Y-0.3535
    N880 X0.7866 Y-0.7866
    N885 X3.036 Y-1.0296
    N890 X3.07 Y-0.25
    N895 G80
    N900 G00 Z0.2

    N910 M09
    N915 G28 G91 Z0.
    N920 G49
    N930 M05
    N935 M30
    %


    Thank you,

    Jack

  4. #4

    Re: Fanuc G84 rigid tapping code

    There is nothing in the G code that would cause the delay. Best guess there is a machine setting that is causing the delay. Something like ''Wait for Spindle Speed Delay'' or something like that. Could be that the spindle is reorienting before continuing on.
    Jim Dawson
    Sandy, Oregon, USA

  5. #5

    Re: Fanuc G84 rigid tapping code

    Thank you Jim for taking a look. I did not see anything either but another set of eyes is always a valuable asset. I agree it may be in the machine controller as a delay for all the stars to get aligned before making it's next move.

    Jack

  6. #6
    Registered
    Join Date
    Apr 2012
    Posts
    67

    Re: Fanuc G84 rigid tapping code

    You could try putting a M19 spindle orient before the M29 Line. It might not help but I use it every time.

    N840 G00 X3.1819 Y-3.1819
    N845 G43 Z0.2 H05
    N846 M19
    N450 M29 S400
    N855 G84 X3.1819 Y-3.1819 Z-0.75 R0.2 P0 F20.
    N860 X2.7134 Y-2.7134
    N865 X1.1092 Y-2.9565
    N870 X0.2318 Y-3.0686
    N875 X0.3535 Y-0.3535
    N880 X0.7866 Y-0.7866
    N885 X3.036 Y-1.0296

  7. #7
    Registered
    Join Date
    Feb 2006
    Posts
    1767

    Re: Fanuc G84 rigid tapping code

    Try G99 G84 instead.

  8. #8
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    Sep 2012
    Posts
    4

    Re: Fanuc G84 rigid tapping code

    Hi,

    Dunno about your control but here is a few things to check.

    1. the N450, make it to N850.. ( it shouldnt make a difference, if it does.. some of your parameters sux in your control)
    2. try to write the whole G84 block for the next hole, as you got in line N855.
    3. if you use Fusion360 check out what code comes out of it. Sometimes a M-code (that you run) might mess up things bad.
    4. If you use some codes above this snippet of code, be sure they are all set back to 'machine start state'. Like turn on / turn off things.
    .... if you turn on something (change it from 'machine power on state') put it back to what it was. (Talking group codes here)

    1 question tho. Did the machine do this in the past or not?

    I wish you find something useful of all the answers you got from ppl here. =)

    Cheers,
    Mikie

  9. #9
    Registered
    Join Date
    Mar 2017
    Posts
    284

    Re: Fanuc G84 rigid tapping code

    maybe it all those block numbers. LOL!

    have you tried ipr feed? G95
    Do not forget to change it back, you'll crap yourself.

  10. #10
    Registered
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    Feb 2018
    Posts
    4

    Re: Fanuc G84 rigid tapping code

    Try removing line N815 you don't need it as spindle speed is defined by the M29 in line N450. This will cause a delay as the spindle is rotating then has to stop and orientate before tapping the hole.

  11. #11
    Registered
    Join Date
    Feb 2006
    Posts
    1767

    Re: Fanuc G84 rigid tapping code

    M03 is unnecessary in rigid tapping.

  12. #12
    Registered
    Join Date
    Oct 2015
    Posts
    214

    Re: Fanuc G84 rigid tapping code

    Quote Originally Posted by sinha_nsit View Post
    M03 is unnecessary in rigid tapping.
    My machine with a Fanuc Mate actually throws a error if I include a speed command (S) with the M03. The Fanuc post processor includes it tho so I have to manually remove it after each post..No idea if that solves anything for you tho ^*

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