Ragnar

Self contained hammer treadle linkage

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Hi,

 

Has anyone devised or seen a reference to a linkage that allows a self contained power hammer treadle to be operated from a pedal that is mounted on the floor or machine base. Just trying to avoid the one-leged stork stance,.............been doing it for 10 years on a Sahinler hammer.

 

Thanks,

 

Ragnar

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Connect two small hydraulic cylinders together with one hose. Move one cylinder, the other cylinder will move. Connect a gas pedal to one cylinder, have the other cylinder connected to the hammer treadle. You can play with pivot angles, different size cylinders, etc.

 

Draw it out on paper first, check all your calculations before you start cutting steel. Make a mock up with plywood to check it.

 

It is BASIC Hydraulics. :) :)

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or just set up a brake cable, bowden cable or push pull cable to do the same. I have seen german hammers set up with this should be very simple.

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Simple extension?  Not on a self contained but...

post-6738-0-60289600-1396564181_thumb.jp

If you need more than an ankle's range of motion this won't work so well.  

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Been wondering when you guys will get sick of the one legged stance, gotta get a little tiring standing on one leg all day.  I recall posting something about this some years ago, but no-one seemed interested then.  May have been a conversation I had with the naked anvil, I'll see if I can find it.

 

Phil

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On my sahinla you can adjust the pedal to ground level by moving the pin on the bar from pedal to valve actuator.

 my pedal is off the ground but is a heel on the ground movement throughout the range that engages and hits metal.

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Basher, thanks for the idea, I'll try to make the bail adjustment.

 

Forgemaster, that would be great if you can find the converstion link with Grant.

 

I have a foggy idea about using a bass drum pedal mounted to a plate  with a chain drive/cam arraingement. 

 

The most awkward movement for me is to push down on the treadle while working from the end of the die.

 

Many thanks for the swift replies.

 

Ragnar

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had a springhammer now for 20 years and used it a fair bit too, also got a bar stool,it may be not as tough looking  sitting down on a hammer but its simple , try it out. 

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I  just have a big  block of steel  that I rest my heel on.    I was in someone's shop where they had a rail mounted to the floor to rest their foot on.

 

But I would still like to see Phil's setup.

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Good day this is my first post. I was in Albuquerque and stopped in at Rob Gunthers shop. He has put a double action air cylinder on his treadle hammer. And it is hooked up to a floor peddle. When not using air the cylinder valves are open so there is no difference when used as a foot operated hammer. The cylinder is between the foot bail and the cross member.

 

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i have a link that comes down to the floor when the hammer is running flat out , an when  the tup is up  the peddle link is only about 1-1/2 ''

of the ground so i can stand on both feet and use my toes to move the hammer peddle    i hate the stork stand    

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Moony,  I like the idea, that's what I'm looking for.  I do use a stool for little short stuff, and a 4x4 x12" wood block that I rest my heel on while standing .  Any photos or sketches of the linkage ,  Moony would be appreciated.

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i will get a picture in a few days an post it 

  it a link that allow me to stand  flat footed     and use just my front of you foot   u might have a nice section of steel  under your heel  but i donot i stand both feet on ground an the toes do the work    but my hammer is a massey   7cwt 

   you need the foot control sensitive   not heavy   just slight pressure      to make it move,  but i am a heavy weight  130 kg   thats 288lbs about  

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i will get a picture in a few days an post it 

  it a link that allow me to stand  flat footed     and use just my front of you foot   u might have a nice section of steel  under your heel  but i donot i stand both feet on ground an the toes do the work    but my hammer is a massey   7cwt 

   you need the foot control sensitive   not heavy   just slight pressure      to make it move,  but i am a heavy weight  130 kg   thats 288lbs about  

Believe me it takes a bit of pushing to get moonys pedal to move, but he's used to it.  I like it with a bit less pressure required, but thats me.

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One of the best setups I have seen was the little 3cwt hammer we had at the tech college in Newcastle. It was arranged so as the pedal was actually in a trench in front of the hammer, when the hammer was running in holdup idle,(ie with the ram sitting at the top of its stoke waiting to start striking) the pedal was about 1" proud of the floor. That was a 3cwt massey clear space, I think that the masseys are arranged so as the pedal is flat to the floor when the hammer is hitting flat out. They dont have a real lot of travel from idle to flat out.


Just measured the pedal travel on my 5cwt massey clear space, the travel from not work (low pressure holdup) to flat out is about 2 1/4 inches of pedal movement (that is measured at the very end of the foot pedal, I don't have a pedal that goes all the way round the hammer).
I've attached a photo showing one of our apprentices using the 5, you can see where the pedal comes to, its comfortable to forge all day with your heel resting on the base plate of the hammer and using your toe/ball of your foot to control the hammer.

Phil

post-5537-0-47527300-1397637276_thumb.jp

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