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IndustryArena Forum > MetalWorking > MetalWork Discussion > Problem with pigtail lead on custom thread

Thread: Problem with pigtail lead on custom thread

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  1. 07-08-2008, 05:35 PM #1
    themez
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    Problem with pigtail lead on custom thread

    The thread is a M5 x.8 . custom thread ...The thread lead starts at .080 diameter and then transitions to .150 minor diameter of the thread. The problem is the .08 transition to .150. I can send iges, we use Mastercam Any cnc lathe guys out there.

    thanks,
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  2. 07-08-2008, 06:41 PM #2
    Geof
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    Does your machine have the ability to do G32 threading?

    This threading cycle allows the taper, and lead, to vary anywhere along the thread.
    An open mind is a virtue...so long as all the common sense has not leaked out.
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  3. 07-08-2008, 08:23 PM #3
    themez
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    heres a pdf of the thread. notice the start. disregard the cuts in the thread.
    I am interested in the start of the thread. I do have a file wihout the cuts.
    Attached Files Attached Files
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  4. 07-08-2008, 09:33 PM #4
    themez
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  5. 07-08-2008, 09:51 PM #5
    Geof
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    I think that is simple if you have G32; I have never had any need to use it but I have seen pictures of threads that had a point similar to that and then a straight portion.
    An open mind is a virtue...so long as all the common sense has not leaked out.
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  6. 07-08-2008, 11:27 PM #6
    g-codeguy
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    Yup, use G32, pullout & return in a subprogram, modifiy the start position.
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