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Thread: What Lathes have HELICAL Cut Gears?

  1. #11
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    Glug just make one, 2 or 3 hrs later, you be done..

  2. #12
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    Looking at the picture in the first post, I always thought those to be straight cut gears only cut at an angle. I know they are still referred to as helical gears but there is really no helix.

    I always thought helical gears had a twist or helix to them like ring and pinion gears.



    There are helical bevel gears and straight cut bevel gears.



    JL..............

  3. #13
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    JL..........

  4. #14
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    Quote Originally Posted by JoeLee View Post
    Looking at the picture in the first post, I always thought those to be straight cut gears only cut at an angle. I know they are still referred to as helical gears but there is really no helix.

    .
    It is a helix. The bevel gears are a more complicated bit of geometry, I think of of the twisted look as its like a helix over a changing diameter. Think of a thread form which is helix. gears obviously have a much different helix angle than a thread, but same idea. Think of how they are cut - work rotates as it moves longitudinally relative to the cutter. That describes both a thread being cut and a helical gear being cut, same defining function that makes it a helix
    .

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