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Interesting Power Hammer Idea

Discussion in 'Other Tools' started by Yamroll, Mar 12, 2016.

  1. Yamroll

    Yamroll New Member

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    So, amongst about 100 ideas and 3 tool/equipment projects currently on the go during my limited free time outside of school and work, I've been thinking about building a wee power hammer.

    I came across this animation, thought it had some practical advantages and drawbacks (exactly the type of thing I like obsessing over) so I thought I'd share it.

    [​IMG]

    So, if everything is working correctly, the fulcrum of the lever moves so that the load could be propelled more quickly on the down stroke, and slower on the up stroke.

    You'd definitely need a DuPont linkage or similar, and thinking about it, the necessary size and weight of the fulcrum-pin and lever would probably more the counteract the benefit of the design, but interesting to think about, no?
     
  2. dancom

    dancom Dust Maker

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    I'd love to build a power hammer.

    Based on the animated illustration, you'd need some serious torque and would have to minimize slot friction...grease ?, but I get the idea of changing acceleration.

    Another approach that I have seen uses a cam where the lobe drops the anvil very quickly and raises it somewhat slower.

    I am working on a teardrop lobe design that uses a 1 horsepower electric motor to raise and drop an 50 pound hammer 2 times per second max. Can't say it works yet, but the numbers look good.

    Dan
     
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  3. Yamroll

    Yamroll New Member

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    Yeah, I think it's more of a food for thought thing than it is something that could actually be implemented.

    I do like the idea of using cams. Practically, I figure V belts or a tire hammer are the way to go.
     
  4. Newfiebackflip

    Newfiebackflip New Member

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    I love the tire hammer build looks pretty wicked.
     
  5. dancom

    dancom Dust Maker

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    I am also taking a close look at a pneumatic cylinder version. This guy made a modified Kinyon style. Maybe use roller bearings like he suggests.
    It sure looks and works pretty well.


    Time to start visiting the scrap yard again.

    Dan
     

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