Free 186 More Best Homemade Tools eBook:  
Get tool plans

User Tag List

Results 1 to 4 of 4

Thread: Da Vinci power hammer build - video

  1. #1
    Supporting Member Altair's Avatar
    Join Date
    Aug 2013
    Posts
    12,020
    Thanks
    1,365
    Thanked 30,299 Times in 9,998 Posts

    186 More Best Homemade Tools eBook

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

    ductape (Feb 23, 2023), nova_robotics (Feb 22, 2023)

  3. #2
    Supporting Member Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    11,622
    Thanks
    2,178
    Thanked 9,120 Times in 4,364 Posts

    Frank S's Tools
    Sorry but more energy is wasted turning that crank than it would take to swing a hammer. Very little work being done for the amount of energy expended

    2,000+ Tool Plans
    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:

    Scotty1 (Feb 21, 2023)

  5. #3
    piper184's Avatar
    Join Date
    Jul 2016
    Posts
    213
    Thanks
    955
    Thanked 76 Times in 49 Posts

    piper184's Tools
    Quote Originally Posted by Frank S View Post
    Sorry but more energy is wasted turning that crank than it would take to swing a hammer. Very little work being done for the amount of energy expended
    True for pure energy input/output but it is a good proof of concept. Once connected to some other form of power like a water wheel it won't matter as much.

    The other thing is if made to more exacting dimensions you would be able to move the cam to the other side of the hammer pivot point to gain a mechanical advantage to lift the hammer higher. Of course the cam would need to on top but adding some follower rollers it would greatly reduce the friction and increase the efficiency.

    I gathered that they are trying to follow the progress of mechanization from stone age to industrial revolution. A great learning experience that many people have not been introduced to before.

  6. #4
    Supporting Member Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    11,622
    Thanks
    2,178
    Thanked 9,120 Times in 4,364 Posts

    Frank S's Tools
    Quote Originally Posted by piper184 View Post
    True for pure energy input/output but it is a good proof of concept. Once connected to some other form of power like a water wheel it won't matter as much.

    The other thing is if made to more exacting dimensions you would be able to move the cam to the other side of the hammer pivot point to gain a mechanical advantage to lift the hammer higher. Of course the cam would need to on top but adding some follower rollers it would greatly reduce the friction and increase the efficiency.

    I gathered that they are trying to follow the progress of mechanization from stone age to industrial revolution. A great learning experience that many people have not been introduced to before.
    Some of the early hammer mills were derived from still earlier tucking or waulking mills used to beat the lanolin out of wool fibers, and to tighten the fibers for making yarns for weaving. the pivot of some of the earliest mills was located somewhere along the length of the handle a cam rotated against the end of the handle then released it as the pawl rolled off the end. as many as 30 hammers might be strung along the length of the rotating shaft with protrusions sticking out not so much as resembling a cam but a flat paddle that would catch and release the end of the handle as it rotated. a similar hammer mill was used to hammer the impurities out of molten iron slounge from the bloomery, to create pig iron. Later Fulling mills used a double swinging hammed with one hammer being crescent shaped while the other. shaped more like a square headed maul, which swung inside of the crescent sharing the same pivot, both were raised by a gear cam at the outer radius of the crescent hammer.



    2,000+ Tool Plans
    Never try to tell me it can't be done
    When I have to paint I use KBS products

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
  •