Bends in Square Tubing

Currently we have a production project that requires bending 3/4" square tubing. Each assembly requires 24 pieces of tubing. Both ends of each tube are bent on a 2-1/2" radius in a die set on an arbor press, the excess is manually trimmed on a band saw, then each end is welded in place. This process is slow, and the accuracy is not what we wish it to be. If some sort of preformed bend was available that could be welded to a straight tube, our production efficiency would increase and the appearance and accuracy of the finished part would be greatly enhanced. We have noticed several sources offering varying styles of joints for round tubing but have yet to find anything for square tubing. We would greatly appreciate any information anyone would wish to share about whether preformed joints for square tubing are available, or any other comments or suggestions anyone would wish to offer. Thanks, K.

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Dear K:

Did you think of forming a square in the ends of preformed round tubing? I'd think you might be able to slide a round tube over a square mandrel... depending on the material and its condition... and "hammer it out" to your square shape.

David A. Smith

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N:dlzc D:aol T:com (dlzc)

Hi K:

You need to find someone in town with a tube bender. Our products where I work involve lots of bending of square tubing. We have the bending done in a machine shop across town and sent to us for welding. They have a hydraulic table-type tube bender and it does a great job. They can bend any radius we ask for, within reason. You might want to take a look in your Yellow Pages.

Hope this helps.

Don Kansas City

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Don A. Gilmore

Excellent ideas, Thanks. Will pass along to our process engineer. K.

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