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IndustryArena Forum > MetalWorking Machines > Haas Machines > Haas Lathes > Feed per revolution and surface feet per minute.

Thread: Feed per revolution and surface feet per minute.

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  1. 12-18-2014, 04:47 AM #1
    AJ961
    AJ961 is offline Registered
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    Feed per revolution and surface feet per minute.

    I'm confused why both have to be input in the IPS screen when performing functions such as OD turn. For instance; If I decide I want .005" feed per revolution and am using 100 SPM, but then change to 200 SPM, wouldn't that change the feed per revolution? I'm sure I'm missing something here and appreciate any replies.
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  2. 12-18-2014, 07:03 AM #2
    Geof
    Geof is offline Gold Member
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    Re: Feed per revolution and surface feet per minute.

    No.

    If you increase the surface speed you increase the rpm so the feed rate per minute increases but it is still the same feed per revolution.
    An open mind is a virtue...so long as all the common sense has not leaked out.
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  3. 12-23-2014, 04:31 AM #3
    AJ961
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    Re: Feed per revolution and surface feet per minute.

    Thanks Geof
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