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Thread: involute gear cutter for 9x20 lathe?

  1. #1
    Captainleeward's Avatar
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    Unhappy involute gear cutter for 9x20 lathe?

    I am looking for the parameters for the involute gear cutter set to make all the gears for the 9x20 lathe?

    I think the DP is 1 and the PA is 20 but I cannot verify those numbers? and I cannot find any cutters with those numbers?



    Help....Thanks

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    olderdan's Avatar
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    Found this, may be of use.
    involute gear cutter for 9x20 lathe?-screen-shot-11-30-17-12.59-pm.png

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    Captainleeward's Avatar
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    Olderdan , Hi I found that one too but can't verify the DP any where else and can't find any cutters to match these numbers? Thanks Cap.

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    olderdan's Avatar
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    Hi Cap, I think one of us is missing something with this (could be me).
    The data you have already states the DP (Diametrical pitch) or module is 1.
    The data I have used for gear cutting is based on these pages
    involute gear cutter for 9x20 lathe?-screen-shot-12-01-17-03.03-pm.pnginvolute gear cutter for 9x20 lathe?-screen-shot-12-01-17-03.05-pm.png
    A full set of 8 cutters can be found
    involute gear cutter for 9x20 lathe?-screen-shot-12-01-17-01.09-pm.png
    A bit expensive for a one of job, I have a spreadsheet for making your own cutters or a fly cutter or maybe you are hobbing them.
    involute gear cutter for 9x20 lathe?-screen-shot-12-01-17-03.38-pm.png

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    Captainleeward's Avatar
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    Wow Thanks for the info So do you think if I order the gears from amazon they will be the right ones for making all the change gears?
    Last edited by Captainleeward; 12-01-2017 at 05:25 PM.

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    Captainleeward's Avatar
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    Thanks olderdan.. can anyone else verify making gears with these parameters for the 9x20 lathe??

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    Frank S's Avatar
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    I would have thought that any import lathe would have had modular pitch not diametrical
    Last edited by Frank S; 12-01-2017 at 07:50 PM.
    Never try to tell me it can't be done
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    Captainleeward (12-01-2017)

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    Frank S's Avatar
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    To find what dimetrical pitch you have try this chart
    involute gear cutter for 9x20 lathe?-find-gear-pitch.jpg
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  10. #9
    Frank S's Avatar
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    some other useful charts
    involute gear cutter for 9x20 lathe?-gear-pitch-2.jpg
    involute gear cutter for 9x20 lathe?-gear-pitch-3.jpg
    involute gear cutter for 9x20 lathe?-gear-pitch-4.jpg
    Never try to tell me it can't be done
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    Captainleeward (12-01-2017)

  12. #10
    Frank S's Avatar
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    the charts I posted were screen shots from the Martian Sprocket & gear catalog called the big catalog it can be found here free download but be warned it is 61,387 kb
    so it will take some time to download if you have a slow connection mine took about a minute but there are smaller target sections which can be downloaded on the same page these can be found here
    Power Transmission, Material Handling & Hand Tool Manufacturer
    I have a hard copy of the 2000 catalog and both the 3000 and the big catalogs saved on my computer very helpful for many tasks
    Never try to tell me it can't be done
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