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Metal Forming Tools Air Shaping and Planishing Hammers, English Wheels, Shrinking/Stretching Machine, Metal Formers, Bead Forming Machines, Sheet Metal Brakes


Metal Forming Tools Air Shaping and Planishing Hammers, English Wheels, Shrinking/Stretching Machine, Metal Formers, Bead Forming Machines, Sheet Metal Brakes

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  #1  
Old 07-06-2009, 03:55 AM
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tank roll for HF bead roller

i am looking for a tank roll die that fits the HF bead roller. anyone know where to find um
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  #2  
Old 07-06-2009, 07:52 PM
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like a slip roll to make tubes?
never heard of a tank roll.
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  #3  
Old 07-07-2009, 11:08 AM
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A tank roll makes a radiused edge on your panel, bending it to about 45 degrees. If you tank roll the edges of two panels, and weld along the seams, it makes a 90 degree radiused corner. You can easily do the same thing with a slapper and a T-dolly, but the tank rolls are more consistent and faster.

Usually they're used for building tanks, like the one in the attached picture. All the seams were tank rolled prior to welding.

I have never seen a set for the HF bead roller. Do you know what the nominal OD of the rolls and the shaft diameter are? I don't know if the HF roll is a knockoff of something else more commonly available.
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  #4  
Old 07-07-2009, 10:22 PM
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You will probably have to turn your own
damn good idea thou
1 more thing to the list to build
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  #5  
Old 05-29-2013, 01:11 PM
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Dredging up an old thread. You can buy tank roll dies for the HF beadroller now from Hoosier Profiles http://hoosierprofiles.com/Bead_Roller_Dies.html

Excellent quality.
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  #6  
Old 05-29-2013, 03:27 PM
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What do you do when you get to the corners?
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Old 05-29-2013, 11:40 PM
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If you tank roll the edges of two panels, and weld along the seams, it makes a 90 degree radiused corner.
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Old 05-30-2013, 12:10 AM
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Wink

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Originally Posted by TheBandit View Post
What do you do when you get to the corners?
P
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  #9  
Old 05-30-2013, 07:21 AM
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Originally Posted by TheBandit View Post
What do you do when you get to the corners?
You have to shrink the excess material at a corner.
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Old 05-30-2013, 03:37 PM
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I can't picture it for some reason. Do you start with a square cut sheet and run the bead roller around the perimeter, turning as you go around the 90 degree corner?
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Old 05-30-2013, 03:40 PM
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I'd probably run the dies to within a couple of inches of each of the 4 corners. Then I'd make a hammerform for the corner out of wood, and beat the corner down with a hammer, gathering and shrinking the excess material to make the corner match the formed edge on the straights.
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Old 05-30-2013, 04:01 PM
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Okay but when you're done you need all three sheets that form a corner to meet up in the corner. What does that look like?
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Old 05-30-2013, 04:02 PM
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I do basically what Ian said, get close to the corner with the roll, then use a T-dolly and mallet to form the corner. Generally, I trim the corner a bit to make it closer to round. Leaving the extra material there makes it harder to form.
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Old 05-30-2013, 04:06 PM
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Okay but when you're done you need all three sheets that form a corner to meet up in the corner. What does that look like?
Profanity ensues.

There is definitely hand work involved. I usually try to do at least part of the corner with a panel that has a radius brake to make up two sides. Tank roll up to the brake, then use the rounded end of a T-dolly and mallet to make that corner. Then, fit the panel that is the 3rd side. I wish I had pictures of the process because it would be much easier to show you than explain.

I had some trial & error when I started with tank rolls to figure how big to make the panels to make the final product come out the right size.
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Old 05-30-2013, 04:15 PM
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Profanity ensues.
That pretty much sums up all my fabrication experiences. I am just bad at it and eventually give up at "good enough".

Would love to see pictures next time someone tackles this, especially of the tank tacked up prior to welding.
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Old 05-30-2013, 10:42 PM
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Look in the '"metal fabricators handbook" by Ron Fournier. I learned how to do this from reading this book when I was in 8th grade ...i'm 40 now. This is not a wise crack...but it sure sounds like it.

Its online somewhere too ,but i cant find it.

Bandit ,also think about it only makes about 45 deg of bend(half of the radius)theres not really much material there.

Last edited by bullnerd; 05-30-2013 at 10:50 PM.
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  #17  
Old 05-31-2013, 08:22 AM
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Quote:
Originally Posted by bullnerd View Post
Look in the '"metal fabricators handbook" by Ron Fournier.
That is one of my favorite books. There's a little bit of information about building nearly every part of a car in there.
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  #18  
Old 05-31-2013, 09:05 AM
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Quote:
Originally Posted by graham08 View Post
that is one of my favorite books. There's a little bit of information about building nearly every part of a car in there.
+1!
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  #19  
Old 05-31-2013, 04:17 PM
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"That is one of my favorite books. There's a little bit of information about building nearly every part of a car in there. "-Yup, read that book front to back many many times,know it by heart.

Long story short...I carried that book with me everywhere! Even during school. One teacher teased me, calling me a nerd(he saw me out of school with it).One day a bigger kid was harrasing me in front of said teacher. I smashed the guy in the face with a large school book,breaking his nose. Teacher said he didnt know whether to call me a nerd or a bully.(actually the other kid was the bully) Years later my kids were watching a cartoon with a character called Bullnerd.That became my screen name.
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