Free 173 Best Homemade Tools eBook:  
Remove advertisements
Page 1 of 2 1 2 LastLast
Results 1 to 10 of 13

Thread: R-8 Modular Gear Cutter Arbor

  1. #1
    rossbotics rossbotics's Avatar
    Join Date
    Dec 2013
    Location
    Florida
    Posts
    584
    Thanks
    777
    Thanked 1,097 Times in 309 Posts

    rossbotics's Tools

    R-8 Modular Gear Cutter Arbor

    In my last post I had built a dividing fixture for cutting some 3 Modular gears, I mentioned that I would post the arbor for holding the cutter when it was done.

    There was a lot of work making the indexing fixture and arbor but they came out very nice, Would had been a lot easier to buy a dividing head and be done with it, But that takes all the fun out of it, Besides isn't that what this site is all about ? Making tools and sharing ideas?

    The gears I'm making are a 3 Mod with 30 teeth which takes a number 5 cutter, Got 2 of those off E-Bay pretty reasonably priced.

    I'm making a total of 9 gears of all the same dimensions, I ganged up 3 at a time on the indexers mandrel and started making chips.

    Below are some photos of the arbor, indexer , and the gear teeth being cut on the mill.

    As always, thanks for looking and happy Machining

    Doug


    R-8 Modular Gear Cutter Arbor-100_0831.jpg

    Above shows the arbor and it's components

    R-8 Modular Gear Cutter Arbor-100_0832.jpg

    Above shows another view of the arbor , Note the spring loaded dowel pin which serves as keyway, being spring loaded allows me to mount any thickness cutter and have a full length for key driving the cutter, the arbor washer will push the pin into the reamed hole to what ever depth it needs to be.

    R-8 Modular Gear Cutter Arbor-100_0833.jpg

    Another view

    R-8 Modular Gear Cutter Arbor-100_0834.jpg

    Assembled

    R-8 Modular Gear Cutter Arbor-100_0835.jpg

    Above shows all the tooling and 3 gear blanks

    R-8 Modular Gear Cutter Arbor-100_0838.jpg

    Above shows the gear teeth being cut, The gears are made from 4140 annealed steel, After the machining is done the teeth will be heat treated

    R-8 Modular Gear Cutter Arbor-100_0839.jpg

    Another view of the teeth being cut

    R-8 Modular Gear Cutter Arbor-100_0840.jpg

    A view of the indexing arrangement on the indexer
    Last edited by rossbotics; 09-10-2016 at 01:18 PM.
    Comments are always welcome
    Doug



    Tool Plans for Sale by rossbotics




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

    backyard_cnc (02-09-2016), basil3w (10-04-2018), ChrisB257 (10-05-2018), kbalch (10-14-2015), NortonDommi (11-22-2017), Okapi (07-29-2017), Paul Jones (10-14-2015), PJs (10-14-2015)

  3. #2
    Content Editor DIYer's Avatar
    Join Date
    Aug 2013
    Posts
    3,090
    Thanks
    353
    Thanked 693 Times in 630 Posts
    Thanks rossbotics! We've added your Gear Cutter Arbor to our Machining category, as well as to your builder page: rossbotics' Homemade Tools. Your receipt:


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

    Okapi (07-29-2017)

  5. #3
    Ed ke6bnl's Avatar
    Join Date
    Mar 2012
    Location
    So. California high desert
    Posts
    77
    Thanks
    0
    Thanked 14 Times in 11 Posts

    Ed ke6bnl's Tools
    Nice work, well done

  6. #4
    PJs
    PJs is offline
    PJs's Avatar
    Join Date
    Sep 2014
    Location
    Northern CA
    Posts
    1,432
    Thanks
    6,747
    Thanked 897 Times in 588 Posts

    PJs's Tools
    Beautiful work on the Arbor, Doug! Thanks for sharing this and your gear cut with us also. Your projects are always a real inspiration!! Interesting that you gang cut the 3 gears, definitely would save time. They look to be about .75 thick each and the shaft on the indexer is 1"...any deflection or did you take multiple passes per tooth? Just a novice and was thinking about the 1.5D rule of thumb. Have an idea for something that uses a small rack and pinion and some concerns about holding the small rack vertically during cutting. Thanks again. ~PJ
    ‘‘Always do right. This will gratify some people and astonish the rest.’’
    Mark Twain

  7. #5
    rossbotics rossbotics's Avatar
    Join Date
    Dec 2013
    Location
    Florida
    Posts
    584
    Thanks
    777
    Thanked 1,097 Times in 309 Posts

    rossbotics's Tools
    Thanks PJs
    There were no deflection in the mandrel at all. The gears were .787" thick. The outer diameter is 3.776". I took the whole depth of the tooth in one pass. The whole depth of the tooth is .266". I didn't have a problem at all.

    Thank you very much for your compliment.
    Happy Machining
    Doug
    Comments are always welcome
    Doug



    Tool Plans for Sale by rossbotics




  8. The Following User Says Thank You to rossbotics For This Useful Post:

    PJs (10-14-2015)

  9. #6
    Administrator
    Join Date
    Jun 2012
    Location
    Clermont, FL
    Posts
    5,034
    Thanks
    2,275
    Thanked 503 Times in 372 Posts
    Hi Doug,

    More great work and photography! Your Gear Cutter Arbor is the 'Tool of the Week'!

    Since you've already received one of our official HomemadeTools.net T-shirts, we'd be glad to award you a $25 online gift card!

    Just let me have (via PM) your email address and we'll get things processed directly.

    Congrats!

    Ken

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

    PJs (10-16-2015), rossbotics (12-01-2017)

  11. #7
    backyard_cnc's Avatar
    Join Date
    Feb 2014
    Posts
    21
    Thanks
    9
    Thanked 21 Times in 11 Posts

    backyard_cnc's Tools
    Great job, the need to index accurately just seems to come up so often in the shop that having multiple ways to achieve it is most useful.

    Gerald

  12. #8
    Captainleeward's Avatar
    Join Date
    Jul 2014
    Location
    San DIEGO, California
    Posts
    968
    Thanks
    416
    Thanked 1,022 Times in 461 Posts

    Captainleeward's Tools
    Doug, WOW that is some classy metal work there, I was thinking of buying the dividing plates for my rotary table now I am rethinking that idea .. :O)

  13. #9
    Ralphxyz's Avatar
    Join Date
    Dec 2016
    Posts
    377
    Thanks
    0
    Thanked 71 Times in 60 Posts

    Ralphxyz's Tools
    Doug, is that a cold air gun you were using to cut the gears? If so what do you think of the cold gun? Where else do you use it?

    Thanks for posting.

    Ralph

  14. #10
    rossbotics rossbotics's Avatar
    Join Date
    Dec 2013
    Location
    Florida
    Posts
    584
    Thanks
    777
    Thanked 1,097 Times in 309 Posts

    rossbotics's Tools
    No Ralph
    That's just a air coolant nozzle with soluble oil diluted, I just cleaned up everything before I took the pictures

    Thanks for asking
    Doug
    Comments are always welcome
    Doug



    Tool Plans for Sale by rossbotics




Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •