Free 173 Best Homemade Tools eBook:  
Become a founding member: 500+ tool plans, full site access, and more.

User Tag List

Results 1 to 6 of 6

Thread: Gear hobbing in a lathe using a tap - video

  1. #1

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

    Seedtick (Nov 7, 2017), Wmrra13 (Nov 9, 2017)

  3. #2
    Supporting Member Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    7,759
    Thanks
    1,010
    Thanked 6,234 Times in 2,977 Posts

    Frank S's Tools
    I've done this many ties but I found out early on that it was best to start the tooth cut near the bottom of the tapered end when making these gears that way as the depth of cut progresses and the teeth are beginning to take shape you do not experience the tooth movement around the perimeter. Cutting a radius grove prior to cutting the teeth is also advisable especially when the thickness of the disk is near to the same as the diameter of the tap.
    Never try to tell me it can't be done
    When I have to paint I use KBS products

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

    NortonDommi (Nov 9, 2017)

  5. #3
    Supporting Member
    Join Date
    Dec 2016
    Posts
    314
    Thanks
    3
    Thanked 114 Times in 93 Posts
    A clever idea, but I think you would have to pay attention to the correct diameter of the blank and the thread pitch, to make sure that the thread pitch is evenly divisible into the wheels designed pitch diameter. It would be interesting to see this done with an acme tap. I would think it would give you more tooth strength. I love all these little brain stimulator videos!

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

    NortonDommi (Nov 9, 2017)

  7. #4
    Supporting Member NortonDommi's Avatar
    Join Date
    Jul 2014
    Location
    North Island, New Zealand.
    Posts
    808
    Thanks
    1,498
    Thanked 433 Times in 261 Posts

    NortonDommi's Tools
    A spiral flute tap helps too.

  8. #5
    Supporting Member
    Join Date
    May 2020
    Posts
    4
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Interesting. How do you get the tap and the chuck/live centre to counter rotate at 4.07 approx?

  9. #6
    meyer77's Avatar
    Join Date
    Feb 2019
    Posts
    135
    Thanks
    1
    Thanked 30 Times in 17 Posts
    How was he changing the lathe speed as cut progresses, VFD?



    173 Best Homemade Tools eBook

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
  •