Dividing head for Taig lathe/mill

Discussion in 'Tools' started by joe d, Aug 15, 2009.

Help Support HMEM by donating using the link above.
  1. Aug 15, 2009 #1

    joe d

    joe d

    joe d

    Well-Known Member

    Joined:
    Nov 26, 2007
    Messages:
    718
    Likes Received:
    9
    Hi all

    Having choked after looking at the prices of factory-made gears, I've decided that I really need to learn to cut my own. So, I need a dividing head suitable for my Taig mill and lathe. Enter Tony Jeffrees... who has designed just the beastie required (see here: http://www.jeffree.co.uk/pages/divheadmk1.html )

    I've started with the spindle:
    [​IMG]

    Engineering Change No 1: decided that the spindle nose should be threaded 3/4-16 so all my Taig tooling will fit, this necessitated a filing guide to make the hex...(you all know how this goes... need a tool to make a tool to make a tool.....)
    [​IMG]

    And here we are: spindle finished.
    [​IMG]

    Don't touch that dial, more to come!

    Cheers, Joe
     
  2. Aug 15, 2009 #2

    CrewCab

    CrewCab

    CrewCab

    Well-Known Member

    Joined:
    Apr 22, 2008
    Messages:
    1,177
    Likes Received:
    6
    Looking forward to this Joe, thanks for sharing 8) ............ good start on the spindle

    CC
     
  3. Aug 15, 2009 #3
    VERY NICE Joe Thm:
    how long did it take to file the hex ?
    Regards Rob
     
  4. Aug 15, 2009 #4

    joe d

    joe d

    joe d

    Well-Known Member

    Joined:
    Nov 26, 2007
    Messages:
    718
    Likes Received:
    9
    Thanks CC, Rob: the hex is 1" across the flats, started at 1.20" dia, so it wasn't bad.. half an hour including a smoke and a cuppa. The material is leaded steel, so it cuts (and files) a treat. I will have to keep after it to keep the rust down, well, who said this was low maintenance :big:

    Joe
     
  5. Aug 15, 2009 #5

    Kermit

    Kermit

    Kermit

    Guest

    Is that 12L14 really that much easier to work with than the 1018 I'm using? I've got tons(It seems :D) of the stuff that are cast offs from work. It appears we don't use any leaded steel in anything we are making. We do use lots of 304, 316, 321, 347, and 4140. The 1018 is always rusted completely over its surfaces, but the 4140 appears to take longer than one to two weeks before it is completely covered with rust. This is Houston weather with 95 degree days at 80% humidity and almost daily rainstorms, 98-100% humidity nights are common after rain in the late afternoon.

    and I'm blabbing without much point.......(maybe I'm getting rusty at small talk :p )

    my question being how much easier is it to work leaded steel than low carbon steel?

    Kermit
     
  6. Aug 15, 2009 #6

    mklotz

    mklotz

    mklotz

    Well-Known Member

    Joined:
    Aug 29, 2007
    Messages:
    3,039
    Likes Received:
    17
  7. Aug 15, 2009 #7

    zeeprogrammer

    zeeprogrammer

    zeeprogrammer

    Well-Known Member

    Joined:
    Mar 14, 2009
    Messages:
    3,362
    Likes Received:
    10
    I made a crankshaft for the Open Launch engine out of 1018.
    Then I tried the same thing for the Horizontal Mill out of 1018.
    I failed at that (not because of the metal) and tried again using 12L14.
    For me, the difference was astounding.

    I don't have much experience but I'm wondering why I would ever use 1018 again.
    I have the same question in the Horizontal Mill thread but no answers yet.
     
  8. Aug 15, 2009 #8

    vlmarshall

    vlmarshall

    vlmarshall

    Well-Known Member

    Joined:
    Dec 28, 2008
    Messages:
    1,138
    Likes Received:
    1
    Well, I tried to find something online that'd tell you 12L14 wasn't as strong as 1018. I found the opposite. We hardly ever use it at work, and I don't know why.

    http://www.onlinemetals.com/alloycat.cfm?alloy=12L14
    http://www.onlinemetals.com/alloycat.cfm?alloy=1018

    ...sorry for dragging the thread off topic.
     
  9. Aug 15, 2009 #9

    Maryak

    Maryak

    Maryak

    Well-Known Member

    Joined:
    Sep 13, 2008
    Messages:
    5,001
    Likes Received:
    73
    Maybe lead and weldability has something to do with it ???

    Best Regards
    Bob
     
  10. Aug 16, 2009 #10

    Deanofid

    Deanofid

    Deanofid

    Well-Known Member

    Joined:
    Jul 19, 2009
    Messages:
    2,673
    Likes Received:
    10
    Joe, I made one similar to Tony's, and it works great for gear cutting with the Taig. You'll get you're moneys worth out of it!

    So, how did you cut the thread on the spindle?

    Dean
     
  11. Aug 16, 2009 #11

    joe d

    joe d

    joe d

    Well-Known Member

    Joined:
    Nov 26, 2007
    Messages:
    718
    Likes Received:
    9
    Dean

    I've been looking at this for quite a while, been wishing to learn gear cutting both for the sake of learning it and I've got a couple of projects down the road that will require some gears...

    As I've not yet made the lead-screw mod to my Taig (need some gears...so we're back to the dividing head :D) I cheated, jobbed out the screw cutting to a couple of young fellows 10 minutes down the road from me who are trying to make a go of their machine shop. They not only tolerated me watching them like a hawk, they didn't complain of all the drooling I was doing looking at their equipment.... they set it up in a 4-jaw that weighs more than me, on a lathe bigger than my car, touched up the cutter and cut the thread all in about 10 minutes, probably would have been even quicker if they weren't busy answering all may questions :big: All in all a pleasant experience, they'll get more of my business.

    Joe
     
  12. Aug 16, 2009 #12

    cfellows

    cfellows

    cfellows

    Well-Known Member Project of the Month Winner

    Joined:
    Aug 26, 2007
    Messages:
    3,878
    Likes Received:
    667
    Interesting project, Joe. I already have a dividing head that I built a number of years ago, but I love following the progress on a well built tool!

    Chuck
     
  13. Aug 17, 2009 #13

    joe d

    joe d

    joe d

    Well-Known Member

    Joined:
    Nov 26, 2007
    Messages:
    718
    Likes Received:
    9
    Vernon: It's all metal... it's on topic!

    Chuck: We'll see about well-built, but I certainly appreciate your confidence!

    A little more done today:

    cut and assembled some 2" ali angle to form the body, installed a little indexing strip to keep things aligned on the carriage, turned some bronze bushings
    [​IMG]

    Boring the holes for the bushings
    [​IMG]

    and bushings in place, waiting for the loc-tite to do it's thing
    [​IMG]

    once the bushings are bored to size for the spindle, the whole thing will get cleaned up and polished....

    Joe

     
  14. Aug 17, 2009 #14

    Deanofid

    Deanofid

    Deanofid

    Well-Known Member

    Joined:
    Jul 19, 2009
    Messages:
    2,673
    Likes Received:
    10
    Hey Joe, if ya ain't cheatin', ya ain't tryin' hard enough!

    Besides it's not cheating if you don't yet have the set up to do it. After all, you can't make bricks without some mud.
    It looks like this is coming along nicely. Good going.

    Dean
     
  15. Aug 19, 2009 #15

    joe d

    joe d

    joe d

    Well-Known Member

    Joined:
    Nov 26, 2007
    Messages:
    718
    Likes Received:
    9
    hi guys

    A little more done, finished boring the bushings, cleaned it all up, drilled and tapped the gear for set-screws, and put it all together....
    [​IMG]
    [​IMG]

    Next up: spindle brake, and then on to something to hold the worm...

    Cheers, Joe
     
  16. Aug 19, 2009 #16

    Maryak

    Maryak

    Maryak

    Well-Known Member

    Joined:
    Sep 13, 2008
    Messages:
    5,001
    Likes Received:
    73
    Joe,

    That's a nice piece of kit. :bow:

    Best Regards
    Bob
     
  17. Aug 19, 2009 #17
    VERY NICE,,,,,,,,, Joe :bow:,,, Did you build the boring head too

    Regards Rob
     
  18. Aug 19, 2009 #18

    joe d

    joe d

    joe d

    Well-Known Member

    Joined:
    Nov 26, 2007
    Messages:
    718
    Likes Received:
    9
    Thanks, Bob & Rob!

    Yes, that's a shop-built boring head as well. see here

    So far, I like making tooling...I find it pretty much as rewarding as the projects that I can then build using them.

    Cheers, Joe

    (PS Bob: can you make that link work? I've forgotten yet again how to do that... :wall: )
     
  19. Aug 19, 2009 #19

    CrewCab

    CrewCab

    CrewCab

    Well-Known Member

    Joined:
    Apr 22, 2008
    Messages:
    1,177
    Likes Received:
    6
    Sorted ;D

    Nice work Joe, coming along very nicely :bow:

    CC
     
  20. Aug 19, 2009 #20

    joe d

    joe d

    joe d

    Well-Known Member

    Joined:
    Nov 26, 2007
    Messages:
    718
    Likes Received:
    9
    CC

    Thanks twice :big:

    Joe
     

Share This Page