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Thread: How to cut gears

  1. 2nd November 2016, 08:47 AM #1
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    How to cut gears

    I know a few on here have Lathes and Milling machines, I picked up more tips watching this video than I'd have found out by myself in a year , and I don't even speak Russian, Not a DRO in sight , all freehand, the guys got skills

    [ame]https://youtu.be/doOgogt0-oA[/ame]
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  2. 2nd November 2016, 02:13 PM #2
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    I wish we had an overarm mill at work!
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  3. 2nd November 2016, 02:29 PM #3
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  4. 2nd November 2016, 02:44 PM #4
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    At 5:45 did he cut the keyways using the longitudinal travel only with the lathe not spinning? Wow, I wouldn't have thought of doing it that way.
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  5. 2nd November 2016, 02:58 PM #5
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    Making change gears (spur gears) be no problems with vertical mill using appropriate tool and arbor, I was testing out my new (cheap chinese) rotary table to see how well it divides, - obviously with the wrong tool for spline making - a 3mm slot cutter , in a drill chuck instead of the correct collet chuck / arbor . It was accurate considering I just used the degree wheel , not the dividing plates. An end mill from overhead would be better again , but obviously only a poor substitute compared to a Horizontal mill .









    Hmm, maybe I can make some spare axles for my Lightweight ,
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  6. 2nd November 2016, 03:01 PM #6
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    Quote Originally Posted by cjc_td5 View Post
    At 5:45 did he cut the keyways using the longitudinal travel only with the lathe not spinning? Wow, I wouldn't have thought of doing it that way.
    thats one of the tips I picked up - dont even need a keyway broach , just a piece of sharp HSS
    .
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  7. 2nd November 2016, 03:09 PM #7
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    Have often pondered how to use my lathe as a mill, ie mount the work piece on the table somehow and the cutting bit in the lathe head?
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  8. 2nd November 2016, 03:21 PM #8
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    Quote Originally Posted by cjc_td5 View Post
    Have often pondered how to use my lathe as a mill, ie mount the work piece on the table somehow and the cutting bit in the lathe head?
    Ive got a small sliding mill table with T slots, only about 4x5" table if your interested, take tool post off lathe and put mill table in its place , put cutting tool in lathe chuck . I don't think I'll need it now Ive got the mill.

    this is the exact one, Lathe Vertical Milling Slide Attachment Fixed Base Suitable For Myford 7 Series | eBay

    Alternatively if you've got a Quickchange tool post you can hold the work direct in the tool post - have done that to make keyways etc.
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  9. 2nd November 2016, 03:26 PM #9
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    Thanks for the offer! I'm not ready at the moment. I might have a look in Hare & Forbes when I am in Perth next....

    Dammit, you've got me Youtubing machining when I should be working!!!!
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  10. 2nd November 2016, 05:05 PM #10
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    Quote Originally Posted by cjc_td5 View Post
    Dammit, you've got me Youtubing machining when I should be working!!!!
    Sounds like my life these days

    I thought about getting a milling attachment for the lathe- bought a milling machine instead. Also I cut a few internal keyways by 'racking' in the lathe- very hard on both the machine and the operator. I bought a metal shaper a couple of months ago- keyways are now a breeze and internal splines will be coming soon.
    Currently working on making the missing components of a universal dividing head for the mill, this will enable cutting of gears with any number up to 400 teeth, also helicals. Fun stuff.
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