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Very very small carbide endmill

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  • Very very small carbide endmill

    Gotta question. How in the world do they grind carbide ball nose endmill that's 0.006" and آ± 0.0002" ? Do they do this under a microscope? What kind of grinding wheel?

    Albert

  • #2
    I haven't worked with anything smaller than .015"...but if you look at one under a loupe or scope, there's almost no geometry to speak of. The edge clearance just kinda raps right into the flute....its wierd.

    I suspect they are done with sharp diamond cup wheels on a CNC. The CNC grinders are awsome...the regrind guys we use do the face, the edge, AND recut the flutes so you don't lose your axial rake.
    b

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    • #3
      albert

      Diamond CNC machines. In the dark ages ('80's) they were done manually under a microscope - four facet grind for simplicity. Some of the modern ones have split and "s" points - for much more money, of course.

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