January 31, 20188 yr Hey guys... I am not sure if this is a Gem or not. My local used machinery sale place has 3 of these air powered drop hammers for sale. I've been watching them for a while and the longer they sit there, the lower the price goes. I've been kicking around the idea of buying one and converting it for shop use as a project. I would offer $900 for one probably. Seems like they would work as a nice small air hammer with some modifications and the addition of a lift/pressure cylinder and some tooling. Good idea or not? Whatcha' think?? Stitch' Edited January 31, 20188 yr by Mod34 Commercial link removed per TOS
January 31, 20188 yr Greetings Stich, Looks to me like a very limited use hammer for your shop. Look up the KA-75 hammer sold by Old World Anvils .. The working height of the one pictured is very low and would be a killer in your back. I have a KA and love it . Forge on and make beautiful things Jim
January 31, 20188 yr If it's a drop hammer, wouldn't that mean that the force of the blow comes from the falling weight, and the air is only to lift it up to the top again? If that's the case, I suppose that would mean that you're looking at a low rate of beats-per-minute and no variation in the force and speed of the blows.
January 31, 20188 yr Okay, so the question is, Can Stitch turn a drop hammer into the equivalent of a KA-75?
January 31, 20188 yr Author 5 hours ago, Jim Coke said: Greetings Stich, Looks to me like a very limited use hammer for your shop. Look up the KA-75 hammer sold by Old World Anvils .. The working height of the one pictured is very low and would be a killer in your back. I have a KA and love it . Hey Jim, Those KA's are great. I already have a tire hammer. This is going to be a project, maybe as a give away. As an Engineer and a Machinist I really like a challenge. I've designed and built countless machine tools over the years. I would like to see what I can make this do maybe. I appreciate the input absolutely for sure! 4 hours ago, JHCC said: Okay, so the question is, Can Stitch turn a drop hammer into the equivalent of a KA-75? If anyone can, It's me Lol!
January 31, 20188 yr No the frame is not built for "powered use" I have seen a board drop hammer used in a smithy in Germany. It had around a 500# ram and the smith used it to start the sides of making a hoe from 2" sq stock, then he drew them out with a Lufthammer leaving a raised spine in the middle for strength. If you did a lot of coining or wanted to impress patterns in pattern welded billets I can see a use for it; but it would get rare use in my smithy.
February 1, 20188 yr Author I should have explained what I was planning better. The air hammer will look nothing like the picture when it's finished. I know that in it's current configuration it's not suitable. But, after I tear it down, and take the parts I need from it I will build an awesome Frankenairhammer!
February 1, 20188 yr 20 hours ago, ThomasPowers said: If you did a lot of coining or wanted to impress patterns in pattern welded billets And we all know how hard it is to impress patterns in pattern welded billets. A more jaded "been there, done that, seen it all, got the T-shirt" crowd you will never find.
February 1, 20188 yr Correct use of terminology: "make a mark or design on (an object) using a stamp or seal; imprint." I've been trying to find a matching set of bush hammer ends to make a patterning swage to use with my screw press. I got to see the ones (I believe they were the ones mentioned by Manfred Sachse) at the Deutches Klingen Museum in Solingen.
February 1, 20188 yr I looked at those too. They are missing the air cylinders on top to raise the rams and I believe the controls to make them work.
February 2, 20188 yr Author 8 hours ago, welder_jim said: I looked at those too. They are missing the air cylinders on top to raise the rams and I believe the controls to make them work. Good eye Jim! I saw it right off. All three they are selling didn't have the lift cylinders. Probably were shot.
February 2, 20188 yr Is the mechanism under the anvil some sort of counterblow device or is it a shock absorber to limit the blow to a known force?
February 2, 20188 yr Author 2 hours ago, Judson Yaggy said: Is the mechanism under the anvil some sort of counterblow device or is it a shock absorber to limit the blow to a known force? I believe it is a pneumatic cushion or return. I could be wrong...
July 21, 20242 yr On 2/2/2018 at 7:00 AM, Judson Yaggy said: Is the mechanism under the anvil some sort of counterblow device or is it a shock absorber to limit the blow to a known force? We have this style of drop hammer at work. The mechanism under the anvil on ours is a type of counter blow device that pushes the base anvil up to meet the dropping head. If it is set up properly, you will not feel anything when you drop the head and strike a part, no matter what rate you have the drop set at. However, if it is setup incorrectly, or the timing chain jumps so much as one tooth on the gear, you will most definitely feel it lol
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