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IndustryArena Forum > CAM Software > Mastercam > G84 CANNED TAPPING CYCLE
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  1. #1
    Join Date
    May 2008
    Posts
    4

    Question G84 CANNED TAPPING CYCLE

    Greetings all-

    Ok.... so I'm trying to get MasterCAM X2 to post the right commands to do a simple RH tap.

    To make a long story short, my boss gave the contact info for Thermwood (who writes our post procesors for MCX2) and they sent me a post that outputs a G84 command, which our machine does not recognize.

    Does anyone know how to load such a canned cycle onto a router or to get MasterCAM to post an M04 command at the bottom of a Z plunge?

  2. #2
    Join Date
    Apr 2003
    Posts
    3578
    I will have check my thermwood post later when I get home. I do not remeber what they ask for.
    Do you have sample code?
    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
    Cadcam
    Software and hardware sales, contract Programming and Consultant , Cad-Cam Instructor .

  3. #3
    Join Date
    May 2008
    Posts
    4
    This is a portion of the code that is supposed to do the tapping. When my machine gets to the G84 line, it locks up and says "Unknown Command".

    % 1/4-20 UNC TAP
    ( Tool Diameter = D = .2500 )
    ( Tool Change Call )
    S1000
    T7 M3
    G0 X-.25 Y-.25
    G0 Z.375
    M31
    G0 Z.375
    Z.25
    G00 X-.25 Y-.25
    G84 X-.25 Y-.25 Z-.38 R.25 F50.0
    G80
    Z.375
    ( Sequence To Send The Machine Home )
    G990 ( Resets To Machine Coordinates )
    G90 G0 Z0
    M5 (Turn Spindle Off)
    X0 Y0
    M02

  4. #4
    Join Date
    Apr 2003
    Posts
    3578
    So you do not know the proper output for your machine? you are showing me that this does not work but what is the proper code for the machine.
    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
    Cadcam
    Software and hardware sales, contract Programming and Consultant , Cad-Cam Instructor .

  5. #5
    Join Date
    Jul 2007
    Posts
    195
    take the X and Y comands out of the G84 line and try it again.
    Be carefull what you wish for, you might get it.

  6. #6
    Join Date
    Jul 2007
    Posts
    195
    Also you have no safety line and no fixture offset call..........back to school with you
    Be carefull what you wish for, you might get it.

  7. #7
    Join Date
    Jul 2007
    Posts
    195
    Maybe if I go back to school they will teach me to spell!
    Be carefull what you wish for, you might get it.

  8. #8
    Join Date
    Apr 2003
    Posts
    3578
    Quote Originally Posted by JROM View Post
    Maybe if I go back to school they will teach me to spell!
    Ok if you go I will go with you, I need more then any one. We can meet in the middle Burbank or Glendale?
    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
    Cadcam
    Software and hardware sales, contract Programming and Consultant , Cad-Cam Instructor .

  9. #9
    Join Date
    Jul 2007
    Posts
    195
    I'm in Costa Mesa and I work in Anaheim Hills.
    Come on down I'll buy you lunch!
    Be carefull what you wish for, you might get it.

  10. #10
    Join Date
    May 2006
    Posts
    132
    check your machine manual and see if you are exceeding the maximum rpm for tapping.
    on one of my macines the tapping is not to go over 400 rpm.

    just a thought
    billy

  11. #11
    Join Date
    Mar 2006
    Posts
    1013
    Get your software serial number from the control and call Thermwood. They can tell you if your version actually has a tapping function. The format looks good, but if the control says it not a valid command, it probably does not do tapping.

    I'll take a look at my Thermwood tapping notes and see what I have also.

    Mike Mattera
    Tips For Manufacturing Training CD's, DVD's for Mastercam, SolidWorks, Inventor, G-Code Training & More
    http://www.tipsforcadcam.com

  12. #12
    Join Date
    May 2008
    Posts
    4
    Well, since Thermwood wrote the post for this, I would have assumed they would know if it did tapping or not. My boss (who suggested I call Thermwood for this post) now says he doesn't think it was set up for drilling cycles.

  13. #13
    Join Date
    Mar 2006
    Posts
    1013
    So... "Do some tapping on a machine that doesn't have tapping cycles". :stickpoke

    Next he'll be asking you to turn lead into gold and then water into wine.

    You can probably have the control upgraded for drilling/Tapping cycles.

    Mike Mattera
    Tips For Manufacturing Training CD's, DVD's for Mastercam, SolidWorks, Inventor, G-Code Training & More
    http://www.tipsforcadcam.com

  14. #14
    Join Date
    Jan 2005
    Posts
    11
    Hi All
    I don't have any experience with router machine, but I hope some of Cnc can use of "iso format" of G Code. My Milling Machine is Moriseiki Nv4000 with Fanuc controller, here is the code for tapping cycle. Remember to "enable single block" function to simulated in your machine.

    %
    O001
    G91 G28 X0 Y0 Z0
    G90 G54 G17
    T7 ( TAP M6X0.75)
    M6
    G54 G0 X25. Y25. (GO TO 1ST HOLE)
    G43 Z50. H7 M5
    M8
    M29 S400 (M29 = TAPING MODE Spindle speed = 400rpm)
    G98 G84 Z-10. R10. F300
    X50. (GO TO 2ND HOLE)
    G80 (END OF CYCLE)
    G0 Z50.
    G91 G28 X0 Y0 Z0
    M30
    .
    .
    .


    Tugiyana

  15. #15
    Hey I have worked for a few people like that. (water into wine, sure I will try my best Its strange how they if they owned their company they are no longer in business!! or if they were a boss they have ben demoted to janitor supervisor.
    www.cad2cam.net
    Programmer/ Certified Cam Instructor

  16. #16
    Join Date
    Oct 2008
    Posts
    7
    I use a Thermwood machine as well and had similar issues with peck drilling.
    I solved my problem by going into control definition and selecting Machine Cycles from the list on the right and then mill drill cycle. There will be several option for canned drill cycles. You need to uncheck the tapping option and maybe all other options. Make sure that you save! Hope this helps!

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