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IndustryArena Forum > MetalWorking Machines > Benchtop Machines > Finding exact centre of 3mm hole

Thread: Finding exact centre of 3mm hole

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  1. 11-19-2010, 12:25 PM #1
    boxmaker
    boxmaker is offline Registered
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    Finding exact centre of 3mm hole

    Hi Can anyone tell me how to find the exact centre of a 3mm countersunk hole?

    Is there a centre finder that can be purchased?

    Thanks

    Ian
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  2. 11-19-2010, 02:01 PM #2
    mactec54
    mactec54 is offline Member
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    boxmaker

    There are more than one way to do this, the most common would be to use a test indicator, in the spindle & turn the spindle by hand, untill you have the X- X+ Y- Y+ at 0.0 on the indicator, another way is to use a gauge pin that is tight in the hole & indicate around the pin
    Attached Thumbnails Attached Thumbnails dial_indicators_di11.jpg  
    Mactec54
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  3. 11-19-2010, 02:46 PM #3
    didzbartholome
    didzbartholome is offline Registered
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    HI there

    are you using a cnc machining centre? fanuc controls or fanuc based controls?
    i have two programmes that will find the centre of a hole using a probe and four points and another programme using 3 points. let me know if you would like it.
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