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  1. #1
    Join Date
    Oct 2004
    Posts
    48

    Exclamation chip load question

    were do people get this number? I am very new to cnc setup was an operator for along time now learning the setup and programming end of it.and are there any beginner formula's that are very valuable that some one could post for me any help is greatly appreciated.

  2. #2
    Join Date
    Apr 2003
    Posts
    1876
    Chip load is the linear amount each flute moves as it passes thru the material. (How much material is removed by each flute). It is used in a formula to determine optimum speeds/feeds for a given tool in given material.

    PHP Code:
    ChipLoad x RPM x NumberOfFlutes InchesPerMinute of travel 
    or
    PHP Code:
    InchesPerMinute x RPM x NumberOfFlutes ChipLoad 
    It will vary from operation to operation, from tool to tool, from material to material, etc etc. Many tool manufacturers have a suggested recommendation. HAAS' newer machines have a calculated display on the controller.

    Here's some other formulae:

    PHP Code:
    Tapping FeedRPM TPI Feed (IPM)
    Thread PitchTPI Pitch
    RPM x DIA 
    3.82 SFPM
    SFM x DIA x 3.82 
    RPM 
    Matt
    San Diego, Ca

    ___ o o o_
    [l_,[_____],
    l---L - □lllllll□-
    ( )_) ( )_)--)_)

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

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