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The impact that is used with this setup has 8 adjustable torque settings built right in, with a max of 75ft/lbs.Originally Posted by aarggh
Correct.
The drawbar is not coupled. When you select the direction, either tool in or tool out, simultaneously the wrench spins either CW or CCW and moves downward towards the drawbar. When you release the DCV, the spring moves the wrench back up.
I'm going to get a video up soon, to clear up the confusion.
i guess thats part of the design you cant see, the automatically going down without having to push it
hmm, look to be ripoff of the kurt power drawbar, bet they wouldn't be happy with someone selling plans for their idea.
http://www.youtube.com/watch?v=ONM-EJGQbLw]Kurt Power Drawbar NIK 042610.flv - YouTube
uh oh, that does look exactly the same.
I dunno, given they (along with many others) are based on the same core component, the Harbor Freight Central Pneumatic 37730, I don't really see how many different ways you could design the air valves/connectors and spring mechanism, as these are basic interfacing requirements for the third party unit to function?
To my thinking, I have seen many, many, cases like this (especially here) where similar needs simply end up with similar results, to suit those needs when like minded people are designing them. If Kurt patented it, that would be a different matter, but I strongly suspect their own design would likely be based or at least be similar to, a multitude of other designs.
cheers,
Ian
It's rumoured that everytime someone buys a TB6560 based board, an engineer cries!
It's not exactly the same. In fact it's quite different. It uses the same principles of operation because I designed mine around that concept, but it is NOT a direct copy. When I designed mine, I was planning on using it on my machine, but decided to go a different route. When people seen this I began to get many requests/questions if I was going to produce them to be sold. I have no intention to produce them as a pneumatic drawbar package but instead put together a nice package of CAD files for people who are interested and capable of making one on their own.
Most of all the industrial style pneumatic drawbars that you can buy use the same principle of operation as the one posted above. They may not all look the same but they operate in the exact same way. I admired the clean look of the Kurt and that is why I designed mine of a similar style.
Once you understand it's operation, it could be adapted to any pneumatic drawbar design, because it's really quite simple.
That's all.
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