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  1. #1
    Join Date
    Dec 2009
    Posts
    88

    trying to ues a G83 drill cycle

    i have a program like this
    T1111
    G97 M3 S1200
    G0 XO. Z.1
    G83 Z-1. Q.05 R.1 F.005
    G80
    G28 U0. W0.
    T1100
    i am using a fanuc oi-TC and it comes up with a alarm that there is an illegal decimal point. all i am trying to do is drill a hole in some stock with the drill with NO live tooling can some one help

  2. #2
    Join Date
    Aug 2009
    Posts
    684
    Can't see any obvoius problem, are you sure the problem does not lie further on in the program, your control may be looking ahead a lot further than you think...

    DP

  3. #3
    Join Date
    Dec 2009
    Posts
    88
    there is nothing else to the program

  4. #4
    Join Date
    Mar 2003
    Posts
    2932
    Can't have a decimal in the Q. Try Q500

  5. #5
    Join Date
    Dec 2009
    Posts
    88
    what is Q500 = to ?

  6. #6
    Join Date
    Mar 2004
    Posts
    1543
    Quote Originally Posted by firekoe View Post
    what is Q500 = to ?
    The number of tenths in the peck, or 50 thou, or 0.05"

    Karl

  7. #7
    Join Date
    Dec 2008
    Posts
    3109
    Quote Originally Posted by firekoe View Post
    i have a program like this
    T1111
    G97 M3 S1200
    G0 XO. Z.1 <---- try a zero instead
    G83 Z-1. Q.05 R.1 F.005
    G80
    G28 U0. W0.
    T1100
    illegal decimal point.
    O address dosen't have a decimal

    come on guys.... this is basic,,, don't try to guess his problem, read all the code first, if he doesn't actually say on which line his program alarmed

  8. #8
    Join Date
    Feb 2006
    Posts
    1792
    Yes, replace O with 0. Q has to be in mm or inch (your program is ok).

    You are not using live tooling, or it is not available on your machine?
    The drilling canned cycles are meant to be used with live tooling. So, if live tooling is not available, there is a possibility that these canned cycles are not enabled on your machine. This is what somebody commented in one of the threads.

    For drilling at the center, G74 also can be used, if G83 etc. is not available. In G74, Q has to be in steps of 0.0001 inch (or in microns in millimeter mode).

  9. #9
    Join Date
    Dec 2009
    Posts
    88
    the program on the machine has the X.0 not X.O just a typo sorry for the confusion. The machine does have live tooling but i am just trying to drill with the drill mounted in a callit in a boring bar pot and i just need to drill a one inch deep hole in a work piece. I don't want to program a peck cycle line by line and i don't have the z axis live tooling pot in the territ so how would i do this. (would it just be ezer to just mount the z axis live tooling pot)

  10. #10
    Join Date
    Apr 2010
    Posts
    0
    I COPIED THIS OUT OF A WORKING PROGRAM THAT I RUN ON MY LATHE W/ FANUC 0i-TC
    HOPE THIS HELPS

    (TAP DRILL)
    (11/32" TWIST DRILL)
    G18G54G99
    T0808
    G50S3000
    G97S556M3
    G0X0.0Z0.1M8
    G83Z-.6R0.Q7000F0.006
    G80
    G97S400
    G0G28U0.W0.M9
    M1

    Q7000 IS = TO .7 / INCH PECK INCREMENT. BASICALLY THERE IS NO PECK IN THIS CYCLE BECAUSE THE PECK IS EQUAL TO THE START PLANE PLUS THE DEPTH.

  11. #11
    Join Date
    Dec 2009
    Posts
    88
    what is the G18 and G54 do?

    You don't need the G0 before the G28 U0. W0. as a G28 references return in the oi-TC series control atomically does it under raped traverse

  12. #12
    Join Date
    Jun 2009
    Posts
    13
    G18 is the xz plane selection. G54 is the work offset.

  13. #13
    Join Date
    Dec 2009
    Posts
    88
    that clears things up. Isnt the machine defaulted to the xz plane from start up?

    I have never had to use this code. I don't use the G54 as i set my work offset in a different manner where i don't have to call a G54. The only places i use this is in the milling machines and just wanted to make sure that it was the same thing for the lathes.

    Thanks for the clarification

  14. #14
    Join Date
    Feb 2006
    Posts
    1792
    Is Q-value in mm or microns (in G21)? The manuals have confused me.

    0i MB Operators' Manual on page 149 has given example:
    G90 G99 G83 X300. Y-250. Z-150. R-100. Q15. F120;
    which indicates that it is in mm.

    On the other hand, 0i TC Operators' Manual on page 164 gives example:
    G83 Z-40.0 R-5.0 Q5000 F5.0 M31;
    where M31 is for C-axis clamp. Here, Q is in microns.

    This means that on lathe, Q is in microns, but it is in mm on a milling machine. Is my interpretation correct?

  15. #15
    Join Date
    Aug 2008
    Posts
    406
    Duper.....The dog is correct ....I have a Oi-TC it dose not like a decimal point on the Q .......NOW Way..........

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