went to hardware store and bought a couple big 1 1/4 inch diameter bolts and a big frikin nut to go with it. screw one bolt into nut, put your tip you wish to compress into the nut, screw down the other bolt. crank them together with a couple cresent wrenches, let it set overnight and u got a milk duddie
Tip Press that works for me
- Thread starter bob_bushka
- Start date
Very innovative! Thanks:thumbup:
Now thats thinking I have made 2-3 jigs that work great but hard to mass produce, How took it back a step though outside the box and went back to the nuts and bolts of how to make one thats easy to mass produce and gues what ? It's made from nuts and bolts.... way to go thanks for sharing..
Craig
Craig
I use 1/2" X 3" or 3 1/2" fine thread bolts with heavy fender washers. I set the bolt up on it's end and place 4 washers on then 4 or 6 tips evenly spaced around the washer , then add 1 washer and more tips and so on until I get 4 layers. I cap those with 4 washers, the nut and torque it to around 22 to 25 pounds. I torque several more times until shrinkage stops then let sit until dry. 24 tips pressed the same and I can repeat the consistency with this method. With a shorter bolt you can press 3 to 6 at a time.
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I'm having problems envisioning this. Do you have any pics of this setup?
RBC
Deceased
Rybord,
Sounds like a good idea!
Why not put a spring under the nut. That way it will keep the tension while the tips compress and you won't have to keep tightening.
Just an idea!
Royce Bunnell
www.obcues.com
Sounds like a good idea!
Why not put a spring under the nut. That way it will keep the tension while the tips compress and you won't have to keep tightening.
Just an idea!
Royce Bunnell
www.obcues.com
While this is not my idea, I would think a spring wouldn't help unless the spring was very high tension to overcome the hardness of the tip while allowing the tip to compress. ie the springs would have to be able to compress the tip versus just hold the washers against the tip.
Of course I am probably overthinking this whole thing............:wink::wink::wink:.
I just use a benchtop vise. I can line up almost 10 tips in there and tighten them all down at once.
RBC
Deceased
While I don't know the math, you (someone) should be able to calculate the clamping force of a 1/2" fine pitch screw at 25ft lbs of torque. That would be the tension of spring that you would need. And yes, it would be a strong spring. I am thinking a die spring would be right.
My business partner Don Owen is a math guru. He is out of town, but I will run this past him to see if he knows off the top of his head how to calculate the clamping pressure.
Royce Bunnell
My business partner Don Owen is a math guru. He is out of town, but I will run this past him to see if he knows off the top of his head how to calculate the clamping pressure.
Royce Bunnell
Royce is correct. Die springs will give you the pressures you require. I don't have a chart, but there are alot of different diameter springs and tension rates.
Depending on the travel and the amount of press you want, Urathane rubber could also be used. I am thinking the red grade in about 1/4 inch thick.
Neil
Depending on the travel and the amount of press you want, Urathane rubber could also be used. I am thinking the red grade in about 1/4 inch thick.
Neil
Don't they make longer nuts like say a couple of inches or more long? I know I've seen them used for turnbuckles or something else similar. and they are many times longer then a standard nut. Could stack quite a few tips in one of those if you could find them in a large enough diameter.
For Me like someone else said I usually just use the vice on My milling machine to press them. I guess It would be nice to do several at a time though.
Greg
For Me like someone else said I usually just use the vice on My milling machine to press them. I guess It would be nice to do several at a time though.
Greg
Good idea!! I kinda thought about the rubber and it could be stacked in just like a layer of tips.
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Greg, there are rod couplers for joining 2 pieces of threaded rod.
With the washers you can see and measure the tips thickness
Yes That is what I was thinking of- threaded couplers. Yeah I just use the vice and can see the tip thickness very easily that way, but the downfall may be that I only press them one at a time.
It's not too hard to make a tip press, a buddy of mine recently made one on his lathe that looked pretty good, although I haven't asked Him how well It works yet. He offered to make me one, but I didn't want to take advantage of His kindness. Especially for something I can make Myself, instead of putting Him through the trouble of making It. looked like it would work well though.
I'm sure the ones that John is making will turn out well too. Price also sounds reasonable.
I like the ideas posted here though.:thumbup:
Greg, I came up with the bolt and fender washers because I didn't have a vise capable of pressing more than a few tips at a time and I wanted to do more. Since a vise is bolt with a set of jaws i.e. "fender washers" I thought that by stacking I could get the volume and whether it be one layer of six tips or four layers making 24 tips the amount of pressure applied was the same and by using the torque method I would have a uniform result.
http://forums.azbilliards.com/showthread.php?t=132439
I also think that John's method is good since it gives more tip height than the bolt washer method and I think his prices are fair for a good quality product that will last you until you just quit pressing tips.
If you think about how many tips you can press then John's tool will literally cost you nothing and give you consistent product that your customer can depend on at a resonable cost.
The nut and bolt idea especially withe the fender washers is seriously ingenious. I ordered a jig from Rocket, when someone is willing to make a jig for us, its like a one time shot. They may not be available again. But deffinitely going to try the bolt and washer trick too.