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Thread: Roll tapping.

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  1. 06-17-2008, 02:29 AM #1
    Mitsui Seiki
    Mitsui Seiki is offline Registered
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    464

    Roll tapping.

    I have never used a roll tap so I need some help.
    What cycle do you use and what speed and feed for 4-40UNC in aluminum?
    Help me ,Please!
    Stefan Vendin
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  2. 06-17-2008, 04:41 AM #2
    Caprirs
    Caprirs is offline Gold Member
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    Center drill.
    Drill .099" dia at 6000rpm .035" pecks 10ipm.
    Tap at 1000rpm using normal G84.

    G84 Z-z Rr S1000 E40.

    My Mitsubishi controls allow a P for dwell at the bottom of the hole if desired.

    Assuming this is mill and the machine will rigid tap of course.
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  3. 06-17-2008, 05:37 AM #3
    Mitsui Seiki
    Mitsui Seiki is offline Registered
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    Yeah, it's a Fadal mill and it can rigid tap.
    Thank you very much for the info!!
    Stefan Vendin
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