Cutting Large Circular Holes into Tubing through Both Walls

[redeng]

I am quoting a rather large order in which I have to some 4" x 4" x 1/4" carbon steel tubing that I need to get a 3.06" +/- .010 hole through. If that isn't bad enough, take the same description and move the center line of the hole to the outside edge of the tubing and machine though. Any thoughts on tooling out there to do this operation with? I have 4000 pcs. of each part to make.

 

[dvd]

If you want to farm out the cutting there are several tube cutting lasers out there. I have used them to make some very complicated cuts.

here is an example:

http://www.thefabricator.com/TubePipeProduction/TubePipeProduction_Article.cfm?ID=775

 

[redeng]

That's not a bad idea. Do you know of any companies that I could trust to do the work and do it right? I have been bitten before. I am located near Chattanooga, TN.

 

[eromlignod]

The first hole you could probably trepan. If I understand your second hole it sounds like you would want to mill it from the side.

Alternately, the holes could be rough plasma cut and then finish milled or bored.

Don
Kansas City

 

[MikeHalloran]

Hougen Rotabroach or similar cutter. It will probably be a special in that diameter and length.



Mike Halloran
Pembroke Pines, FL, USA

 

[unclesyd]

5 Axis abrasive water jet. I would contact someone like Flow Corporation for available jobs shops near your location.

http://www.flowcorp.com/waterjet-products.cfm?id=155

 

[dvd]

http://www.emjmetals.com/processing/tube.htm

located in Kansas City, MO

http://www.spsci.com/procservices.html

located in New Century, KS