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IndustryArena Forum > Machine Controllers Software and Solutions > G-Code Programing > tapping a m12 x 1.75 hole need help on the q word

Thread: tapping a m12 x 1.75 hole need help on the q word

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  1. 06-05-2014, 01:54 PM #1
    Michael82
    Michael82 is offline Registered
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    tapping a m12 x 1.75 hole need help on the q word

    Hello guys I am tapping on a doosan dmn 500 ( fanuc i-series control ) I tap all the time with standard taps like 1/2 -13 but I have a job that is using a metric tap this is what I have . I am using feed per fev, i am using a m12 x 1.75 tap I think my lead or Q in the program should b Q0.06889 I got this by taking the lead 1.75 and multiplying it by .03937 is this right ??
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  2. 06-06-2014, 01:49 PM #2
    mcode
    mcode is offline Registered
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    Re: tapping a m12 x 1.75 hole need help on the q word

    Yes, or (1.75 / 25.4) = .068898

    easier to remember
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