Tapered Tube

[Runsible1]

We are designing a product on which we would like to taper aluminium or magnesium extruded tube. Sizes 60mm OD tapered to 40mm OD, 1,000 long x 3,0 wall. Are there any suggestions as to the best way to do this? Is there a machine available? Thanks.

 

[ornerynorsk]

I'd look up some spinning or swaging companies.

 

[BillPSU]

Hydroforming may also be a choice but the length may present a problem.

 

[dvd]

Tapered rollers are used on belt and roller turns in the conveyor industry. You should search for tapered conveyor rolls. I know that Omni Metalcraft supplies tapered rolls, they may make what you are looking for.

http://omnimetalcraft.com/downloads/pdf/sect-03-roller-06.pdf

 

[Runsible1]

Thanks for the suggestions guys. I am not familiar with hydroforming. Can you suggest a site that explains it. Omni Metalcraft's tapered rollers are along the lines of what I want. Do you know how they make them?

 

[BillPSU]

Do a google search on hydorforming.

Here is one of the links I found.

http://www.interlaken.com/servo/history_D_filler-neck.html