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Thread: Additional screw cutting quick change gearbox

  1. #1
    Supporting Member LMMasterMariner's Avatar
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    Additional screw cutting quick change gearbox

    Finally made this very important lathe modification.

    This lathe (G0602 type) already has a built-in gearbox for all metric pitches from 0.25 to 3.5 millimeters. Also all imperial pitches in the range 8 to 72 TPI, but I don't need them. But to do that and also to change to power feed pitches it is required to use change gears. Not too complicated, but it is time consuming.

    27-tooth and 60-tooth change gears is the option which gives the finest pitches. Nine of them. Combined with 5 different pitches from new gearbox it makes 45 pitches. As it can be seen from threads @ feeds chart there are all metric pitches in the range 0.25 to 3.5 mm available without use of any tool. Pitches can be changed in a few seconds

    Materials used:

    steel plate 10mm, 12 mm
    steel round pipe 3" dia
    various gears 45# steel
    stainless steel shafts dia 14mm
    6201 ball bearings
    4 washers (made from 1 HRK coins) spacers between gears
    Aluminum 6061







    Cheers
    LMMasterMariner

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  2. The Following 15 Users Say Thank You to LMMasterMariner For This Useful Post:

    asterix (Nov 9, 2021), BuffaloJohn (Yesterday), Canyonman44 (Nov 8, 2021), darkoford (Nov 9, 2021), Dimsa (Nov 19, 2021), DIYSwede (Nov 7, 2021), frasej (Nov 14, 2021), johncg (Nov 9, 2021), Jon (Nov 8, 2021), markchadwick (Nov 10, 2021), semaur (Nov 14, 2021), threesixesinarow (Nov 13, 2021), Tonyg (Nov 13, 2021), Tule (Nov 9, 2021), Tuomas (Nov 17, 2021)

  3. #2
    Supporting Member DIYSwede's Avatar
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    Welcome back again, with yet another amazing build, LMM!
    Personally, I had to run the video at 50% speed, and stop occasionally to try grasping your design considerations and set-ups!
    Well worth the time, though and some really good food for thought for me!
    Next tool of the week, perhaps?

    All the best!
    Johan

  4. #3
    Supporting Member LMMasterMariner's Avatar
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    LMMasterMariner's Tools
    Thanks for nice words, DIYSwede,

    Yes. It is better to watch some parts with reduced speed. I wanted to make video clip shorter than 10 minutes and some parts, like making of the shaft, are even running at 12 x speed.

    Cheers
    LMMM

  5. #4
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    Thanks LMMasterMariner! We've added your Quick Change Lathe Gearbox to our Lathe Accessories category,
    as well as to your builder page: LMMasterMariner's Homemade Tools. Your receipt:




  6. The Following User Says Thank You to DIYer For This Useful Post:

    LMMasterMariner (Nov 8, 2021)

  7. #5
    Supporting Member LMMasterMariner's Avatar
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    Last moment update
    Attached Thumbnails Attached Thumbnails Additional screw cutting quick change gearbox-01.jpg   Additional screw cutting quick change gearbox-02.jpg   Additional screw cutting quick change gearbox-03.jpg   Additional screw cutting quick change gearbox-04.jpg   Additional screw cutting quick change gearbox-05.jpg  


  8. The Following 2 Users Say Thank You to LMMasterMariner For This Useful Post:

    darkoford (Nov 15, 2021), Tuomas (Nov 17, 2021)

  9. #6
    Jon
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    Congratulations LMMasterMariner - your Quick Change Lathe Gearbox is the Homemade Tool of the Week!

    A very nice lathe upgrade, like several others of yours that have won this award in the past.

    Some more nice builds from this week:

    Odd Part Chuck Holding Method by Frank S
    Lathe Oiler by Frank S
    Adjustable Swage Handle by Philip Davies
    Log Splitter by darus627
    Single Point Gear Cutting Tool by Mr. Factotum's Workshop
    Bench Grinder Modification by Tuomas
    PPR Pipe Welder by Mr.DK DIY
    Grow Beds by Frank S
    Puukko Knife by SteelCraft
    Scale Model Shaper by Rustinox
    Portable Password Vault by rgsparber
    Disc Sander Mount by Tuomas
    Rebar Cutter by liberal
    Survival Saw by Mazay
    Adjustable Marking Gauge by orioncons36


    LMMasterMariner - you'll be receiving a $25 online gift card, in your choice of Amazon, PayPal, or bitcoin. Please PM me your current email address and gift card choice and I'll get it sent over right away.

    This is your 7th Homemade Tool of the Week win. Here are all of your Homemade Tool of the Week winning tools. Congrats again




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  10. The Following 2 Users Say Thank You to Jon For This Useful Post:

    LMMasterMariner (Nov 13, 2021), Tuomas (Nov 17, 2021)

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