First Time Gear Cutting - Thank you Jerry Kieffer

Discussion in 'Clock Construction' started by Kim Miller, Jun 18, 2017.

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  1. Kim Miller

    Kim Miller Registered User
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    Nov 21, 2012
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    307969.jpg
    First time wheel cutting. It went great! This is the great wheel for W.R. Smith's Lyre Skeleton Clock. It has 120 teeth, .8 module PP Thornton cutter. Thank you Jerry Kieffer for your help!!!

    Now on to the other wheels!

    Kim Miller
     

    Attached Files:

  2. shimmystep

    shimmystep Registered User

    Mar 5, 2012
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    Great work, looks excellent!
    He's a real gentleman isn't he, I'll never forget a long and helpful telephone chat with him from across the Atlantic.
     
  3. Tinker Dwight

    Tinker Dwight Registered User

    Oct 11, 2010
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    My only complaint with Kim is that once he set it up,
    He should have cut 3 or 4 wheels at once.
    I'm sure some where there is another want a main wheel.
    Tinker Dwight
     
  4. Kim Miller

    Kim Miller Registered User
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    Nov 21, 2012
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    Tinker,
    For the rest of the wheels I can remove the aluminum spacer from the rotary table, turn an arbor and wheel on my lathe, then take the lathe chuck off the lathe with the arbor and wheel still chucked up and mount it to the rotary table. That's what I like about the Sherline equipment. There's a threaded insert that screws into the center of the rotary table so I can screw the chuck from the lathe right on. I'll have to change cutters to cut all the ratchet teeth so then I'll have to re-set the offset. This is my first time gear cutting or building a clock from scratch so I'm still learning.
    Thanks!
    Kim
     
  5. Tinker Dwight

    Tinker Dwight Registered User

    Oct 11, 2010
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    I have an old lathe with brass ways. I've not got to cutting gears with it but
    I've used the mill attachment many time as well as turned a lot of stuff.
    Sherline continues to keep things up to date as well.
    I've thought about getting a newer motor and control but find a variac
    does what I need ( already had it for other purposes ).
    Store your brass and aluminum chunks in different boxes or you'll
    need to sharpen your tools more often.
    Tinker Dwight
     
  6. sharukh

    sharukh Registered User
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    I know this shows my ignorance but would you care to elaborate on that ?

    Sharukh
     
  7. Tinker Dwight

    Tinker Dwight Registered User

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    If the different metals are touching it will cause electrolysis. The aluminum will acquire a thicker layer of
    oxide. Aluminum oxide is the same material as sapphire. It will dull even carbide bits.
    Tinker Dwight
     
  8. sharukh

    sharukh Registered User
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    Thank you.

    Sharukh
     
  9. Paul Madden

    Paul Madden Registered User
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    Apr 24, 2017
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    Hi Tinker,

    That is a great tip. I would never have considered this.
    Thanks for making a mention of this!

    Paul.
     
  10. Paul Madden

    Paul Madden Registered User
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    Apr 24, 2017
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    Hi Kim,

    I saw the very same clock on a YouTube video some time ago, and its really impressive. The escapement is absolutely mesmerizing!
    I'm sure you will have a lot of fun with this project.

    That is a really interesting gear cutting set up you have. Are you using the Sherline digital indexing system?
    Were you able to go full depth of cut, or did you have to cut the teeth in stages?

    I hope you post plenty of pictures and descriptions, and keep us up-to-date of your build along the way!

    Good luck with your project Kim,

    Paul.
     
  11. Kim Miller

    Kim Miller Registered User
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    Nov 21, 2012
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    Hi Paul,

    Yes I'm using Sherline's CNC rotary table. Works great!
    After I set the depth by cutting the first two teeth, I was able to cut the rest of the teeth to full depth in one pass.

    I'll post more pictures as I go.

    Thanks for your interest Paul.

    Kim
     
  12. Paul Madden

    Paul Madden Registered User
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    Apr 24, 2017
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    Hi Kim, thanks for confirming those points. I'm very much looking forward to seeing your progress.

    Best wishes Kim,

    Paul.
     
  13. rgmt79

    rgmt79 Registered User
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    Jul 23, 2016
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    Hi Kim, I'm thinking of buying a Sherline lathe, apart from the rotary table, do I need any other accessories to do this task? I have a similar wheel to cut...

    Thanks,
    Richard
     
  14. Kim Miller

    Kim Miller Registered User
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    Richard,

    I'm actually using a Sherline 2000 milling machine, with the head tipped horizontal.

    Kim
     
  15. scootermcrad

    scootermcrad Registered User
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    I'm in the process of setting myself up to cut wheels and pinions and just learning, as well. If you don't mind me asking, is there a source in the US for PP Thornton cutters or maybe even another maker of these style cutters?

    Looking forward to seeing the rest of the build. That style of skeleton clock is wonderful!
     
  16. rgmt79

    rgmt79 Registered User
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    #16 rgmt79, Aug 9, 2017
    Last edited: Aug 9, 2017
    Thanks Kim, I was thinking of the 4000 series lathe with a Mill attachment. Actually, the company that sells Sherline products in Europe is TheCoolTool.com in Austria and rebranded as UniTurn/UniMill. They also make their own equipment under the Unimat name. I plan to visit them to discuss my options (they are in Vienna, not so far from me). If Unimat is man enough and precise enough for this kind of work then that would be a lower cost option for me...the rebranded Sherline products attract import duty and are quite expensive here.

    Richard
     
  17. karlmansson

    karlmansson Registered User

    Apr 20, 2013
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    Hello Richard!

    There is a European retailer located in the South of Sweden. http://www.aerosupply.se/undersida.html
     
  18. rgmt79

    rgmt79 Registered User
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    Thank you karlmansson, that looks interesting, I have asked them to confirm prices for delivery to Brno, Czech Republic.

    Thanks again,

    Richard
     
  19. karlmansson

    karlmansson Registered User

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    #19 karlmansson, Aug 10, 2017
    Last edited by a moderator: Dec 15, 2017
    Hello Kim!

    I've been considering getting a Sherline mill for some time now. I notice you have a Series 2000. How is it performing? I've Always thought the Construction didn't look too rigid.
    I'm also curious if you know if the 5000 series (standard) mills have a swiveling headstock or adjustable tram such as yours?

    Best regards
    Karl
     
  20. Kim Miller

    Kim Miller Registered User
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    Karl,

    The 2000 series machine has performed great for what I've been doing. But it's mainly been just bushing work. I'm just now getting into clock construction by building the skeleton clock, so I'm using it more for milling now. But I do think the 5000 series may be more rigid. You can still turn the headstock horizontal with the 5000 series. Let me know if you need any more info. I'd be glad to help.

    Thanks.
    Kim
     
  21. Kim Miller

    Kim Miller Registered User
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    Hello scootermcrad,

    The only place that I know of in the US for PP Thornton cutters is from Bob Derochers at clkmaker@gmail.com. Maybe someone else knows of another source.

    I'll post some more pictures of my progress this weekend.

    Thanks.
    Kim
     
  22. Allan Wolff

    Allan Wolff Moderator
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  23. rgmt79

    rgmt79 Registered User
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    Jul 23, 2016
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    Karl, are you aware of the german company Proxxon, they make some nice lathes and mills. The lathe PO 250/E with a dividing attachment TA250 looks like it could cover anything a clockmaker would need, with the exception of bushing...they have a small MICRO miller MF70 that would cover that. There are some dealers offering good discounts....any comments welcome.

    http://www.proxxon.com/en/micromot/precision-lathe-and-milling-systems.php

    Richard,

    P.S. Still waiting for a response from aerosupply
     
  24. karlmansson

    karlmansson Registered User

    Apr 20, 2013
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    Hello! Yes, I am aware of Proxxon. I've taken them into consideration as well. I believe that is "PD 250/E" as in "Präzisions Drehbank". The number is the length of the bed.

    I'm looking for a mill first and foremost, although a nice, precise machine lathe would be nice to have. I'm currently using my Unimat SL but it leaves things to be desired... The Proxxon mill series becomes interesting with the FF range but then we are talking prices well in line with Sherline. Since I have numerous user reviews, not least from Jerry Keiffer, about the Sherline equipment I'm inclined to go with them. Although I did just check the price for the rotary table with CNC and controller. It's approaching the price of the 5500 mill... One thing at a time I suppose.
     
  25. scootermcrad

    scootermcrad Registered User
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    Great! Thank you fellas! I will check those places out. I appreciate it!

    Any other brands to look at?
     

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