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Thread: rigid tapping

  1. #1
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    rigid tapping

    hi everybody can someone help me with tapping its the dirst time i am doing it in a fadal and i dont know the codes can you guys give me an example of the G code for rigid tapping and non rigid tapping please ,I really appreciate any kind of help thank you very much.

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    Registered fizzissist's Avatar
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    Making sure your machine HAS rigid tapping first...This is Format 1, a 2-56 tap in S.S.

    M6 T6 (2-56 TAP............
    G0 G90 X.65 Y0 E4 S600 M5 M90 G80 G8 (sets rpm without turning on spindle
    G84.2 (RIGID tapping initialization
    G0 H6 D6 Z.325 M8
    G84.1 G98 X.65 Y0 Z-.5 R+.5 F600. Q.01786 E4 (F600. is the rpm, matches the spindle setting above
    X-.65 Y0
    X.65 Y0 E3 (using E1, E2, E3, E4 taps 2 holes in each part in 4 different fixture locations
    X-.65 Y0
    X.65 Y0 E2
    X-.65 Y0
    X.65 Y0 E1
    X-.65 Y0
    G80
    G0 Z2. M9
    G0 H0 Z0 M5



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    Registered carbidecraters's Avatar
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    Quote Originally Posted by fizzissist View Post
    Making sure your machine HAS rigid tapping first...This is Format 1, a 2-56 tap in S.S.

    M6 T6 (2-56 TAP............
    G0 G90 X.65 Y0 E4 S600 M5 M90 G80 G8 (sets rpm without turning on spindle
    G84.2 (RIGID tapping initialization
    G0 H6 D6 Z.325 M8
    G84.1 G98 X.65 Y0 Z-.5 R+.5 F600. Q.01786 E4 (F600. is the rpm, matches the spindle setting aboveX-.65 Y0
    X.65 Y0 E3 (using E1, E2, E3, E4 taps 2 holes in each part in 4 different fixture locations
    X-.65 Y0
    X.65 Y0 E2
    X-.65 Y0
    X.65 Y0 E1
    X-.65 Y0
    G80
    G0 Z2. M9
    G0 H0 Z0 M5
    I see some broken taps in your future

    feed rate of F600. Your RPM would need to be 33600RPM..LOL

    560RPM=F10.

    Format 2

    M6T1 (2-56TAP
    G0X0Y0
    Z.3H1M8
    G84.1G98Z-.375S560F10.
    G80

    Feed*Pitch=RPM

    We have had good luck with our Fadals milling mostly soft steel and aluminum up to 5 axis. We are always looking for spare parts :) If you have a broken down Fadal give a shout.


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    Registered sti2011's Avatar
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    Not here to play referee but, fizzizist and carbide craters progs look correct and should work on a Fadal. Actually looks like fizzizist got it from the Fadal prog manual. The Fadal will tap holes programmed more than a few ways. Not to mention self reversing tapping heads like Procunier and Tapmatic. Which are programmed differently.....One needs to decide to use the "Q"(pitch) value or not.



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    It's a format 1 / format 2 thing. They are programmed entirely different depending on the parameter. I also believe both programs are correct at a glance but I only use format 2. And it was a short glance

    Maybe the prep G84.2 is necassary in format 2 also?

    This is from my manual. Format 1 is first, Format 2 is second:

    EXAMPLE:

    N52 G0 G90 S.2 M5 G80 M90 (Do not turn the spindle on!)
    N53 G84.2
    N54 H1 M7 Z.4
    N55 G84.1 G99 R0+.4 Z-.3 F2000.2 Q.05 X0 Y0
    N56 X1.
    N57 G80

    EXAMPLE:

    N52 G0 G90 S2000.2 M5 G80 M90 (Do not turn the spindle on!)
    N53 G84.2
    N54 H1 M7 Z.4
    N55 G84.1 G99 R0+.4 Z-.3 S2000.2 F100. X0 Y0
    100% feed calculation here
    N56 X1.
    N57 G80


    Last edited by SBC Cycle; 08-27-2009 at 07:35 PM. Reason: Added manual reference


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    my Fadal is a 1993 VMC15 and it will NOT do the S600.2 type of command.. but here is my code for a 5/16 tap Format 1

    N240 ( 5/16-18 TAPRH TOOL - 12 DIA. OFF. - 201 LEN. - 12 DIA - 0.3125 )
    N250T12M6
    N260G0G90S855M3E1X0.Y.8645
    N270H12Z1.M8
    N280G84G99X0.Y.8645Z-.75R01.F855.Q.0556
    N290Y-.8645
    N300G80
    N310M5M9
    N320G90H0Z0.
    N330M2



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    Hi Guys,
    Fizzissist's prog is correct as to F600Q.01786. This is correct for Format 1.
    However you could not even get the prog to run because note the initial
    Z position at H6 Z.325 and the R+.5 for the clearance position. The machine won't allow that. A typo maybe?



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    You Fadal fellas are sharp! I didn't catch that. Yes, I believe the control would sound the alarm with that.

    Unless it's I before R except after G84.2 ...





    <crickets>





    Ok, lame joke. I'll keep my day job.

    FF, the G84 is intended for regular tapping with a compression or flex type collet holder, not for rigid tapping. Rigid tapping allows the use of a solid holder for precision depth control, peck tapping, etc. Using a solid holder with G84 could result in a crash or damage to the machine. Or so I've been told.



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    Quote Originally Posted by SBC Cycle View Post
    FF, the G84 is intended for regular tapping with a compression or flex type collet holder, not for rigid tapping. Rigid tapping allows the use of a solid holder for precision depth control, peck tapping, etc. Using a solid holder with G84 could result in a crash or damage to the machine. Or so I've been told.
    Well, I used a rigid tap holder and it tapped fine for me. My machine stops with the .2 on anything. It has the rigid tap option for sure, but I was told the .2 was the speed selection, and my machine does not have automatic speed selection.. it is remove the Z cover and move the belts with your hands on mine.



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    Registered fizzissist's Avatar
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    Quote Originally Posted by Dyad1 View Post
    Hi Guys,
    Fizzissist's prog is correct as to F600Q.01786. This is correct for Format 1.
    However you could not even get the prog to run because note the initial
    Z position at H6 Z.325 and the R+.5 for the clearance position. The machine won't allow that. A typo maybe?
    You guys are brutal.


    That program segment is from a program I've been running (running this job right now, coincidentally), getting 200-300 holes/tap without breakage. The Z value is unique to this part since there's a shelf below my Z-zero where the tap starts..giving me both the minimum tap initiation level above the part and some extra head room to make sure chips are cleared. I know it doesn't look right, and now ya got me scratching my head....I'll check it in the morning and post here what's going on.

    I'm using the expensive Tapmatic rigid tap holders, btw, and LOVE 'em.



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    Quote Originally Posted by FastFieros View Post
    Well, I used a rigid tap holder and it tapped fine for me. My machine stops with the .2 on anything. It has the rigid tap option for sure, but I was told the .2 was the speed selection, and my machine does not have automatic speed selection.. it is remove the Z cover and move the belts with your hands on mine.
    I see, the older model must have a different control I use a Tapmatic self reversing head most of the time myself (G85), but the rigid tapping is awesome for getting max thread out of a blind hole. When I started using the option I asked advise from another shop in town with Fadal's and that was the recommendation they gave. He prefered regular tapping with a compression head (G84) because you can retract faster than the feed in. His was a 96, mine was a 97. Maybe you can do this with Rigid tapping too, I don't know.

    If I have one complaint with Fadal's it's too many variations of programming depending on F1/F2, and apparantly the year model of the machine matters too. This is from my manual and it's the same for my 97 and 08 machine:

    G84 Feed - Reverses Feed RH Tap Compression Holder
    G84.1 Feed - Reverses Feed Right Hand Rigid Tapping



  12. #12
    Monkeywrench Technician DareBee's Avatar
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    I use format 2 and do it differently as well.

    N1840(Clockwise tap operation - M14)
    N1841G90
    N1842M09
    N1843T21 M6
    N1844G1 X-0.87 Y0. S140. M3 F1.
    N1845Z8.8 H21 F88.
    N1846G0 X-0.87 Y0.
    N1847G84.2
    N1848z8.6
    N1849G84.1 R8.55 Z7.2 F11.024 S140.
    N1850G80
    N1851G0 Z9.8
    N1852(Rotate Table)
    I have always started the spindle even though Fadal says don't do it. Originally it was because I didn't know any better and now it is mostly because I keep forgetting to modify my post processor.
    I always use the G84.2 and output the F to match the pitch instead of using Q

    So far in this thread we all do it and no two of us have the same code yet

    www.integratedmechanical.ca


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