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Thread: bevel-spur gear

  1. #1
    Join Date
    Feb 2006
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    Phoenix
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    2,744

    Default bevel-spur gear

    Jerome is a good place for old tools, like this drill press. Rust is slowed.

    The larger of the two mating bevel gears is also a spur gear. Isn't this an uncommon blending?

    Last edited by aostling; 07-16-2007 at 09:32 PM.
    Allan

  2. #2
    Join Date
    Feb 2007
    Location
    Arkadelphia Ar.
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    442

    Default

    how would you have like to cut that gear with out a cnc back in the day

  3. #3
    Join Date
    Nov 1999
    Location
    SE OZ
    Posts
    1,966

    Default Post drill

    Deleted/erased-out
    Last edited by oldtiffie; 08-20-2007 at 04:28 AM.

  4. #4
    Join Date
    Jan 2004
    Location
    Missouri
    Posts
    16,719

    Default

    Possibly not that bad.....

    Cut one of the gear surfaces. Then index off it on another machine, and cut the other. A bit of adjustment of the setup, and you are there.

    Could be done on a milling machine, or a purpose made gear cutter. The bevel portion might have been done as the form cutter approximation, or cut on a proper bevel gear shaper, and the spur gear indexed off it.

    Still, it is interesting, and one wonders just why they felt the need to add those steps to production. Possibly it fit better in the design.

    It appears that the pinion on the crank arm will engage the spur gear portion, giving the option of hand or lineshaft drive.

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