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  1. #1
    doug925's Avatar
    doug925 is offline Titanium
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    Do I have to enact a M29 prior to a G84?
    This is on a VMX24 (new and uncrashed) and I 'd like to keep it that way

    Hence the reason for the dumb question/s.

    Also, the manual reads as though I should program feed with a IPM, instead of a IPR?
    So, for a 1/4x20 running at 1000rpm, I would write my programs to say F50. ipm, instead of F0.05" per rev???
    Is this the case?

    Thanks,

    Doug.

  2. #2
    nakedanvil is offline Aluminum
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    I don't have M29 on my Haas, but do rigid tapping all the time. Your mill dosn't know from IPR. RPM and IPM yeild a certain IPR. 1000 RPM? Pretty fast for tapping. OK, 1000 devided by 20 (tpi) = 50. So you use 1000RPM and 50 IPM.

    S1000 M03

    G84 Z -(DEPTH) R.2 F50.

  3. #3
    GBeaman is offline Cast Iron
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    I think you can use G88 to activate rigid tapping. Write your code and set the tool well above the part and try it out. In the auto screen while running a program directly below "Block Number" the machine displays what it is doing...ie milling, drilling, or rigid tapping. Make sure it displays "rigid Tapping" to ensure the spindle is syncronized. Other then that I believe you can add a second z dimension to add peck depths. Hope this is somewhat helpful. And yes you do program with IPM on your mill. Good luck.
    -Greg

  4. #4
    doug925's Avatar
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    Thanks

  5. #5
    doug925's Avatar
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    bump
    Anybody know if m29 is needed?

  6. #6
    doug925's Avatar
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    Gbeaman, my manual does list G88 as a bnc code, but is it the same? It also says that G84.2, and G84.3 are the same too....:frustrated:

    Thanks,

    Doug.

  7. #7
    GBeaman is offline Cast Iron
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    my manual specifies two different ways of calling for a rigid tap. If i read it correctly the G84.* would require the m29, but for rigid tapping with G88 no m29 is needed. I believe as long as the screen displays "rigid tapping" on the console while in motion you are good to go. good luck.
    -Greg

  8. #8
    GBeaman is offline Cast Iron
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    our mastercam post is set up so that it does not post out rigid tapping, as our older machines require. The format it posts is the basic spindle on feed in reverse spindle feed out cycle. When I post a program I have been just using the find and replace function in the editor. I simply replace all G84s with G88s no other modifications are needed. If you want to peck to the full depth then you will need to edit the code and add aditional z-depths. I don't know what the difference is between ISNC and BNC but I do know my VMX 64 will run a rigid tap with G88. Try it outside of the part. I can hear the difference the spindle makes when it is rigid tapping and when it is in simple tap cycle designed for a floating holder. I hope this is helpful. What about conversational programming, it is much simpler. Take care.
    -Greg

  9. #9
    doug925's Avatar
    doug925 is offline Titanium
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    Thanks Greg!
    Okay, so the Hurco can do it either way.
    Cool.

    I will listen for the difference in spindle noises ,and look for the "rigid tap" on the screen.

    I don't know the first thing aoubt Hurco conversational, as I program offline. I *will* take the training class when the update comes out though.
    (couph, couph Hurco)

    Thanks again.

    Doug.

  10. #10
    leadmanmoss is offline Cast Iron
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    geez all this code talk made me hungry....i ant the five bucks!!!.

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